CN110699069B - Light response type luminescent material and application thereof - Google Patents
Light response type luminescent material and application thereof Download PDFInfo
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Abstract
The invention discloses a light-responsive luminescent material, which is obtained by mixing an organic metal complex luminescent material and a photobase generator, wherein under the illumination of specific wavelength, an alkaline substance generated by the photobase generator and the organic metal complex generate photochemical reaction, so that the luminescence of the organic metal complex is effectively regulated, and the regulation and control of the luminescence of the organic metal complex are realized while the aggregation induced quenching phenomenon of the organic luminescent material in an aggregation state is effectively avoided; the light response type luminescent material is used for preparing the dual image storage material, and the two images are displayed at the same spatial position under different conditions, so that the organic unification of the dominant anti-counterfeiting and the recessive anti-counterfeiting is realized, and the dual image storage effect is achieved.
Description
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to a light-responsive luminescent material and application thereof.
Background
The traditional organic luminescent material has the phenomenon of aggregation-induced quenching in an aggregation state, so that the luminescent efficiency is reduced, even the luminescence disappears, and the luminescence of the luminescent material cannot be effectively regulated, thereby limiting the application. Compared with the traditional organic luminescent material, the organic metal complex has rich photochemical/physical properties and higher luminescent quantum yield, and the patent CN101613315B uses the organic metal complex as the organic electroluminescent material, can emit phosphorescence, and can realize continuous adjustment of wide-range emitted light; however, how to use the material in a light-responsive luminescent material and adjust and control the luminescent properties of the light-responsive luminescent material is not reported.
The holographic technology is an important image storage means and can be used in the technical field of high-end anti-counterfeiting. The image recorded by the holographic technology has the characteristics of high brightness under natural light, capability of being identified by naked eyes at multiple angles, difficulty in counterfeiting and the like. The patent CN108148331B coats the surface of the up-conversion nanocrystalline with an organic ligand to prepare a composite material, the composite material can observe a holographic pattern recognized by naked eyes under natural light, and can observe fluorescence visible by the naked eyes under near-infrared laser to prepare an anti-counterfeiting material with dual naked eye recognition. However, the single anti-counterfeiting means lacking in concealment is difficult to meet the development requirement of anti-counterfeiting technology, and the development of the anti-counterfeiting technology integrating naked eye identification and invisibility is the development direction of the anti-counterfeiting technology.
Disclosure of Invention
One of the objectives of the present invention is to provide a light-responsive luminescent material, which can effectively avoid aggregation-induced quenching of an organic luminescent material in an aggregation state, effectively adjust the luminescence of an organometallic complex, and achieve the regulation of the luminescence of the organometallic complex.
In order to achieve the purpose, the invention adopts the technical scheme that:
a light-responsive light-emitting material comprising an organometallic complex light-emitting material and a photobase generator, wherein the organometallic complex light-emitting material is one of the structural formulas Pt-1 or Pt-2:
in the structural formulas Pt-1 and Pt-2, a group X is one of methyl, ethyl, trifluoromethyl, nitro and amino; in the structural formulas Pt-1 and Pt-2, a group R is one of n-dodecyl, n-hexadecyl, tetraethylene glycol, citronellyl, 4-cyano-4 '-heptyl biphenyl, 4-n-octyloxy-4' -cyano biphenyl, 4-cyano-4 '-amyl biphenyl and 4-n-butoxy-4' -cyano biphenyl.
The light-responsive luminescent material regulates and controls the luminescence of the organic metal complex under the irradiation of a light source with specific wavelength, and effectively avoids the aggregation induced quenching phenomenon of the organic luminescent material in an aggregation state.
Furthermore, the mass ratio of the organic metal complex luminescent material to the photobase generating agent is 1: 0.5-10.
Furthermore, the mass ratio of the organic metal complex luminescent material to the photobase generating agent is 1: 3-6.
Further, the photobase generator is one of the following structural formulas:
the group X in the structural formula PBG2 is H or NO2(ii) a The photobase generating agent is salts which can generate alkaline substances by illumination.
The other purpose of the invention is that the wavelength of the light acted on the light response type luminescent material is 200-370nm when the light response type luminescent material is applied to the preparation of dual image storage materials, anti-counterfeiting ink and chemical sensors; the photoresponse type luminescent material is used as a raw material to prepare the dual-image storage material, the anti-counterfeiting ink and the chemical sensor.
Further, when the light-responsive luminescent material is used for preparing a dual-image storage material, the storage material comprises 1-10 parts by weight of the light-responsive luminescent material, 7-50 parts by weight of liquid crystal, 0.2-10 parts by weight of visible light initiator, 0.1-10 parts by weight of polymerization inhibitor N-phenylglycine and 30-70 parts by weight of photopolymerization monomer; the light-responsive luminescent material is the organic metal complex luminescent material and a photobase generator.
Further, in preparing the dual image storage material, the liquid crystal is one or more of P0616A, 4-cyano-4 '-heptylbiphenyl, 4-cyano-4' -pentylbiphenyl, 4-n-octyloxy-4 '-cyanobiphenyl, and 4-n-butyloxy-4' -cyanobiphenyl;
the visible light initiator is one of camphorquinone, 3' -carbonylbis (7-diethylaminocoumarin) and tetraiodotetrachlorofluorescein sodium salt;
the photopolymerization monomer comprises a monofunctional monomer and a multifunctional monomer, the mass ratio of the monofunctional monomer to the multifunctional monomer is 1: 0.3-2, and the monofunctional monomer is one or more of N-vinyl pyrrolidone, acrylamide, N-dimethylacrylamide, methyl methacrylate, methyl acrylate, ethyl acrylate and methacrylic acid; the multifunctional monomer is one or more of ethylene glycol dimethacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate and hyperbranched acrylate.
Further, the preparation method of the dual image storage material specifically comprises the following steps:
s1: uniformly mixing 1-10 parts by weight of a photoresponsive luminescent material, 7-50 parts by weight of liquid crystal, 0.2-10 parts by weight of a visible light initiator and 30-70 parts by weight of a photopolymerization monomer to obtain a mixed solution A;
s2: pouring the mixed liquid A obtained in the step S1 into a liquid crystal box, and performing photopolymerization reaction on the photopolymerizable monomer through coherent laser irradiation of a holographic light path to obtain a holographic material storing a high-brightness holographic pattern under visible light;
s3: and (4) irradiating the holographic material in the step (S2) through a mask plate by ultraviolet light with the wavelength of 200-370nm, and carrying out photochemical reaction on the organic metal complex luminescent material and the photobase generating agent to obtain a fluorescent pattern capable of efficiently emitting light under the ultraviolet light.
Further, in step S2, the wavelength of the coherent laser light is 432-633 nm, and the irradiation time of the coherent laser light is 10-60S.
Further, the light intensity of the ultraviolet light in the step S3 is 50-200 mW/cm2The irradiation time is 0.5-10 min.
The double images prepared by the method comprise high-brightness holographic patterns under visible light and high-efficiency luminous fluorescent patterns under ultraviolet light, and the holographic patterns and the fluorescent patterns can be the same or different; the holographic pattern may be a two-dimensional image or a three-dimensional image, and the fluorescent pattern is a two-dimensional image.
Compared with the prior art, the invention has the beneficial effects that:
(1) the light-responsive luminescent material is obtained by mixing the organic metal complex luminescent material and the photobase generator, so that the aggregation-induced quenching phenomenon of the organic luminescent material in an aggregation state can be effectively avoided, and under the illumination of specific wavelength, an alkaline substance generated by the photobase generator and the organic metal complex generate a photochemical reaction, so that the luminescence of the organic metal complex is effectively regulated, and the regulation and control of the luminescence of the organic metal complex are realized.
(2) The photoresponse type luminescent material is used for preparing the dual-image storage material, under the visible light, a visible light initiator and a photopolymerization monomer are subjected to photopolymerization reaction, and a polymer obtained by the reaction is separated from liquid crystal to obtain a high-brightness holographic pattern; under the ultraviolet illumination, the organic metal complex luminescent material and the photobase generating agent generate photochemical reaction, the holographic pattern is not influenced, meanwhile, the fluorescent image storage of high-efficiency luminescence is realized, and the two images are displayed at the same spatial position under different conditions, so that the organic unification of dominant anti-counterfeiting and recessive anti-counterfeiting is realized, and the effect of dual image storage is achieved.
(3) The photoresponse type luminescent material provided by the invention has good solubility, and after the organic metal complex obtained by modifying the flexible side chain and the photobase generating agent are mixed in a certain proportion, the organic metal complex can be mixed with liquid crystal, a visible light initiator and a photopolymerization monomer to obtain a uniform solution, so that the problem that the organic metal complex is difficult to dissolve in a holographic material system is solved.
(4) The light response type luminescent material provided by the invention can be applied to high-end optical anti-counterfeiting, and can also be applied to the technical fields of optical information storage, luminescent display and the like.
Drawings
FIG. 1 is a graph showing the results of fluorescence spectrum measurement in example 1;
FIG. 2 is a graph showing the results of fluorescence spectrum measurement in example 2;
FIG. 3 is a graph showing the results of fluorescence spectrum measurement in example 3;
FIG. 4 is a graph showing the results of fluorescence spectrum measurement in example 4;
FIG. 5 is a holographic image of example 5;
FIG. 6 is a fluorescent image of example 5;
FIG. 7 is a graph showing the results of fluorescence spectrum measurement of comparative example 1;
FIG. 8 is a graph showing the results of fluorescence spectrum measurement of comparative example 2;
FIG. 9 is a graph showing the results of fluorescence spectrum measurement of comparative example 4;
fig. 10 is a fluorescence image of comparative example 6.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Taking 1mg of organic metal complex luminescent material (a structural formula is Pt-1, a group X is trifluoromethyl, and a group R is n-dodecyl), 0.5mg of photobase generating agent (a structural formula is PBG1), and 100mg of polypropylene carbonate (PPC) to be mixed in 5ml of tetrahydrofuran solution to obtain a uniform solution, and volatilizing at room temperature to prepare the PPC film. The mass ratio of the organic metal complex luminescent material to the photobase generating agent is 1: 0.5. The tetrahydrofuran adopts a common volatile organic solvent, and a common chemical field mode of dissolving a solid in a liquid which is easy to volatilize to obtain a uniform mixed solution is adopted.
The PPC film is irradiated by ultraviolet light with the wavelength of 200nm, fluorescence spectra before and after irradiation are tested, and the test result is shown in figure 1. The result shows that the film emits light before illumination, and the light emission of the film is obviously weakened after illumination for a certain time.
Example 2
Taking 1mg of organic metal complex luminescent material (a structural formula is Pt-1, a group X is methyl, a group R is 4-n-octyloxy-4' -cyanobiphenyl), 3mg of photobase generating agent (a structural formula is PBG 3) and 100mg of polypropylene carbonate (PPC) to be mixed in 5ml of tetrahydrofuran solution to obtain a uniform solution, and volatilizing at room temperature to prepare the PPC film. The mass ratio of the organic metal complex luminescent material to the photobase generating agent is 1: 3.
The PPC film is irradiated by ultraviolet light with the wavelength of 370nm, fluorescence spectra before and after irradiation are tested, and the test result is shown in figure 2. The result shows that the film emits light before illumination, and the light emission of the film is obviously weakened after illumination for a certain time.
Example 3
Example 3 is different from example 1 in that 1mg of an organometallic complex light-emitting material (formula Pt-2, group X is nitro group, and group R is n-hexadecyloxy group), 6mg of a photobase generator (formula PBG2, X is H), and 100mg of polypropylene carbonate (PPC) were mixed in a tetrahydrofuran solution to obtain a uniform solution, and the solution was volatilized at room temperature to prepare a PPC film. The mass ratio of the organic metal complex luminescent material to the photobase generating agent is 1: 6.
The PPC film is irradiated by ultraviolet light with the wavelength of 280nm, fluorescence spectra before and after irradiation are tested, and the test result is shown in figure 3. The result shows that the film emits light before illumination, and the light emission of the film is obviously weakened after illumination for a certain time.
Example 4
Example 4 is different from example 1 in that 1mg of an organometallic complex light-emitting material (formula Pt-1, group X is an amino group, and group R is a tetraethylene glycol group), 10mg of a photobase generator (formula PBG 4), and 100mg of polypropylene carbonate (PPC) were mixed in a tetrahydrofuran solution to obtain a uniform solution, and the solution was volatilized at room temperature to prepare a PPC film. The mass ratio of the organic metal complex luminescent material to the photobase generating agent is 1: 10.
The PPC film is irradiated by ultraviolet light with the wavelength of 280nm, fluorescence spectra before and after irradiation are tested, and the test result is shown in figure 4. The result shows that the film emits light before illumination, and the light emission of the film is obviously weakened after illumination for a certain time.
Example 5
S1: adding 1.33mg of organic metal complex luminescent material Pt1(X group is trifluoromethyl, R group is N-hexadecyl), 0.67mg of photobase generating agent PBG1, 100mg of liquid crystal 4-cyano-4 '-pentylbiphenyl, 0.4mg of visible light initiator 3,3' -carbonylbis (7-diethylamine coumarin) and 20mg of polymerization inhibitor N-phenylglycine into 140mg of photopolymerization monomer, and ultrasonically dispersing for 50min at 25 ℃ to enable the mixed solution to be in a uniform phase, thereby preparing mixed solution A capable of preparing the dual-image storage material. The photopolymerizable monomer was a mixture of 46.7mg of monofunctional monomer N, N-dimethylacrylamide and 93.3mg of polyfunctional monomer pentaerythritol triacrylate (mass ratio 1: 2).
S2: and (4) pouring the mixed solution A obtained in the step (S1) into a liquid crystal box, and irradiating for 35 seconds under 432nm coherent laser to enable the photo-polymerization monomer to generate free radical polymerization reaction, so as to obtain the holographic material storing the holographic pattern.
S3: irradiating the holographic material in the step S2 through a mask plate by adopting ultraviolet light, wherein the wavelength is 365nm, light intensity of 50mW/cm2The ultraviolet light is irradiated for 1min, and the dual image storage material which simultaneously stores the holographic pattern and the fluorescent pattern is obtained.
The prepared dual image storage material has a hologram pattern as shown in fig. 5 and a fluorescent pattern as shown in fig. 6.
Example 6
S1: 1.4mg of an organic metal complex luminescent material Pt1(X is methyl, R is citronellyl), 8.6mg of a photobase generator (PBG 2, X is H), 7mg of a liquid crystal P0616A, 10mg of a visible light initiator tetraiodotetrachlorofluorescein sodium salt and 0.1mg of a polymerization inhibitor N-phenylglycine are added into 30mg of a photopolymerization monomer, and the mixture is subjected to ultrasonic dispersion at 28 ℃ for 60min to enable the mixed solution to be in a uniform phase, so that a mixed solution A capable of preparing the dual-image storage material is prepared. The photopolymerizable monomer was a mixture of 23mg of monofunctional monomer N, N-dimethylacrylamide and 7mg of polyfunctional monomer pentaerythritol triacrylate (mass ratio 1: 0.3).
S2: and (4) pouring the mixed solution A obtained in the step (S1) into a liquid crystal box, and irradiating for 20 seconds under coherent laser light of 633nm to enable the photo-polymerization monomer to generate free radical polymerization reaction, so as to obtain the holographic material storing the holographic pattern.
S3: irradiating the holographic material in the step S2 by adopting ultraviolet light through a mask plate, wherein the wavelength is 254nm, and the light intensity is 200mW/cm2The ultraviolet light is irradiated for 1min, and the dual image storage material which simultaneously stores the holographic pattern and the fluorescent pattern is obtained.
The holographic pattern and the fluorescent pattern of the prepared dual image storage material were identical to those of example 5.
Example 7
S1: adding 2.5mg of organic metal complex luminescent material (Pt-1, X is methyl, and R is citronellyl alcohol), 2.5mg of photobase generating agent PBG2, 30mg of liquid crystal 4-N-octyloxy-4' -cyanobiphenyl, 5mg of visible light initiator camphorquinone and 5mg of polymerization inhibitor N-phenylglycine into 50mg of photopolymerization monomer, and performing ultrasonic dispersion at 28 ℃ for 60min to make the mixed solution be a uniform phase, thereby preparing a mixed solution A capable of preparing the dual-image storage material. The photopolymerizable monomer was a mixture of 25mg of monofunctional monomer N, N-dimethylacrylamide and 25mg of polyfunctional monomer pentaerythritol triacrylate in a mass ratio of 1: 1.
S2: and (4) pouring the mixed solution A obtained in the step (S1) into a liquid crystal box, and irradiating for 30 seconds under coherent laser of 460nm to enable the photo-polymerization monomer to generate free radical polymerization reaction, so as to obtain the holographic material storing the holographic pattern.
S3: irradiating the holographic material in the step S2 by adopting ultraviolet light through a mask plate, wherein the wavelength is 254nm, and the light intensity is 50mW/cm2The ultraviolet light is irradiated for 0.5min, and the dual-image storage material which simultaneously stores the holographic pattern and the fluorescent pattern is obtained.
The holographic pattern and the fluorescent pattern of the prepared dual image storage material were identical to those of example 5.
Comparative example 1
Taking 1mg of organic metal complex (a structural formula Pt-1, a group X is trifluoromethyl and a group R is n-dodecyl) and 100mg of polypropylene carbonate (PPC) to be mixed in tetrahydrofuran solution to obtain uniform solution, and volatilizing at room temperature to prepare the PPC film.
The PPC film is irradiated by ultraviolet light with the wavelength of 200nm, fluorescence spectra before and after irradiation are tested, and the test result is shown in FIG. 7. The results show that the film emits light before and after illumination without adding the photobase generator, and the illumination hardly changes the light emission of the film.
Comparative example 2
Comparative example 2 is different from example 1 in that 1mg of an organometallic complex (formula Pt-1, group X is methyl, group R is n-dodecyloxy), 0.1mg of a photobase generator (formula PBG1) and 100mg of polypropylene carbonate (PPC) were mixed in 5ml of tetrahydrofuran solution to obtain a uniform solution, and the solution was volatilized at room temperature to prepare a PPC film. The mass ratio of the organic metal complex luminescent material to the photobase generating agent is 1: 0.1.
The PPC film was irradiated with ultraviolet light having a wavelength of 300nm, and fluorescence spectra before and after irradiation thereof were measured, and the measurement results are shown in fig. 8. The result shows that the film emits light before illumination, and the light emission of the film is slightly weakened after illumination for a certain time.
Comparative example 3
Comparative example 3 is different from example 1 in that 1mg of an organometallic complex (formula Pt-1, group X is methyl, group R is n-dodecyloxy), 15mg of a photobase generator (formula PBG1) and 100mg of polypropylene carbonate (PPC) were mixed in a tetrahydrofuran solution to obtain a uniform solution, and the solution was volatilized at room temperature to prepare a PPC film. The mass ratio of the organic metal complex luminescent material to the photobase generating agent is 1: 15.
The fluorescence spectra of the PPC film before and after irradiation with ultraviolet light having a wavelength of 280nm were measured, and the results were consistent with those of example 4, and therefore, no graph of the results was displayed here. The result shows that the film emits light before illumination, and when the content of the photobase generating agent is continuously increased, the film emits light obviously after illumination for a certain time.
Comparative example 4
Comparative example 4 is different from example 1 in that,
the PPC film is irradiated by visible light with the wavelength of 460nm, and fluorescence spectra before and after irradiation are tested. The test results are shown in fig. 9. The results show that visible light does not attenuate the fluorescence of the luminescent PPC film.
Comparative example 5
Comparative example 5 differs from example 7 in that:
s1: adding 5mg of organic metal complex luminescent material (a structural formula is Pt-2, X is nitro, and R is N-hexadecyloxy), 30mg of liquid crystal 4-cyano-4 '-pentylbiphenyl, 5mg of visible light initiator 3,3' -carbonylbis (7-diethylamine coumarin) and 5mg of polymerization inhibitor N-phenylglycine into 50mg of photopolymerization monomer, and ultrasonically dispersing for 60min at 28 ℃ to enable the mixed solution to be in a uniform phase, thereby preparing mixed solution A capable of preparing the dual-image storage material. The photopolymerizable monomer was a mixture of 25mg of monofunctional monomer N, N-dimethylacrylamide and 25mg of multifunctional monomer pentaerythritol triacrylate.
The remaining procedure was the same as in example 7.
In comparative example 5, the material was irradiated with ultraviolet light of 280nm through a mask plate, and a fluorescent image could not be obtained.
Comparative example 6
S1: 0.4mg of organic metal complex luminescent material (Pt-1, X group is methyl, R group is citronellyl group), 0.2mg of photobase generating agent PBG 6, 54mg of liquid crystal 4-cyano-4 '-heptyl biphenyl, 15mg of visible light initiator 3,3' -carbonyl bis (7-diethylamine coumarin) and 0.08mg of polymerization inhibitor N-phenylglycine are added into 80mg of photopolymerization monomer, and the mixture is subjected to ultrasonic dispersion at 28 ℃ for 60min to enable the mixed solution to be in a uniform phase, so that mixed solution A capable of preparing the dual-image storage material is prepared. The photopolymerizable monomer was a mixture of 40mg of monofunctional monomer N, N-dimethylacrylamide and 40mg of polyfunctional monomer pentaerythritol triacrylate in a mass ratio of 1: 1.
The remaining procedure was the same as in example 7.
In comparative example 6, the material was irradiated by ultraviolet light of 280nm through a mask plate, and the obtained fluorescence image had a lower resolution and a poorer definition. As shown in fig. 10.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A light-responsive luminescent material is characterized by comprising an organometallic complex luminescent material and a photobase generator; the organic metal complex luminescent material is one of structural formulas Pt-1 or Pt-2:
in the structural formulas Pt-1 and Pt-2, a group X is one of methyl, ethyl, trifluoromethyl, nitro and amino; in the structural formulas Pt-1 and Pt-2, a group R is one of n-dodecyl, n-dodecyloxy, n-hexadecyl, n-hexadecyloxy, tetraethylene glycol group, citronellyl, 4-cyano-4 '-heptylbiphenyl, 4-n-octyloxy-4' -cyanobiphenyl, 4-cyano-4 '-pentylbiphenyl and 4-n-butyloxy-4' -cyanobiphenyl.
2. The light-responsive luminescent material according to claim 1, wherein the mass ratio of the organometallic complex luminescent material to the photobase generator is 1: 0.5-10.
3. The light-responsive luminescent material according to claim 2, wherein the mass ratio of the organometallic complex luminescent material to the photobase generator is 1:3 to 6.
4. The light-responsive luminescent material of claim 1, wherein the photobase generator is one of the following structural formulas:
the group X in the structural formula PBG2 is H or NO2。
5. The use of the light-responsive luminescent material as claimed in any one of claims 1 to 4, wherein the wavelength of the light applied to the light-responsive luminescent material is 200-370nm in the preparation of dual image storage materials, security inks, and chemical sensors.
6. The use of the light-responsive light-emitting material according to claim 5, wherein when the light-responsive light-emitting material is used for preparing a dual image storage material, the storage material comprises 1 to 10 parts by weight of the light-responsive light-emitting material, 7 to 50 parts by weight of liquid crystal, 0.2 to 10 parts by weight of visible light initiator, 0.1 to 10 parts by weight of polymerization inhibitor N-phenylglycine, and 30 to 70 parts by weight of photopolymerizable monomer.
7. The use of an optical response type luminescent material according to claim 6, wherein said liquid crystal is one or more of P0616A, 4-cyano-4 '-heptylbiphenyl, 4-cyano-4' -pentylbiphenyl, 4-n-octyloxy-4 '-cyanobiphenyl and 4-n-butyloxy-4' -cyanobiphenyl;
the visible light initiator is one of camphorquinone, 3' -carbonylbis (7-diethylaminocoumarin) and tetraiodotetrachlorofluorescein sodium salt;
the photopolymerization monomer comprises a monofunctional monomer and a multifunctional monomer, the mass ratio of the monofunctional monomer to the multifunctional monomer is 1: 0.3-2, and the monofunctional monomer is one or more of N-vinyl pyrrolidone, acrylamide, N-dimethylacrylamide, methyl methacrylate, methyl acrylate, ethyl acrylate and methacrylic acid; the multifunctional monomer is one or more of ethylene glycol dimethacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate and hyperbranched acrylate.
8. The use of the light-responsive luminescent material according to claim 6 or 7, wherein the method for preparing the dual image storage material comprises the following steps:
s1: uniformly mixing a photoresponse type luminescent material, liquid crystal, a visible light initiator and a photopolymerization monomer to obtain a mixed solution A;
s2: pouring the mixed liquid A obtained in the step S1 into a liquid crystal box, and performing photopolymerization reaction on the photopolymerizable monomer through coherent laser irradiation of a holographic light path to obtain a holographic material storing a high-brightness holographic pattern under visible light;
s3: and (4) irradiating the holographic material in the step S2 through an ultraviolet light with the wavelength of 200-370nm through a mask plate, and carrying out photochemical reaction on the organic metal complex luminescent material and the photobase generating agent to obtain a fluorescent pattern capable of efficiently emitting light under the ultraviolet light.
9. The use of the light-responsive luminescent material according to claim 8, wherein the wavelength of the coherent laser light in step S2 is 432-633 nm, and the irradiation time of the coherent laser light is 10-60S.
10. The use of the light-responsive luminescent material according to claim 8, wherein the intensity of the ultraviolet light in step S3 is 50-200 mW/cm2The irradiation time is 0.5-10 min.
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| CN201910987672.9A CN110699069B (en) | 2019-10-17 | 2019-10-17 | Light response type luminescent material and application thereof |
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| CN201910987672.9A CN110699069B (en) | 2019-10-17 | 2019-10-17 | Light response type luminescent material and application thereof |
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