CN111635314A - Degradable photoresist resin monomer synthesized from isopropyl dimethyl hexahydronaphthalene diketone and synthesis method thereof - Google Patents
Degradable photoresist resin monomer synthesized from isopropyl dimethyl hexahydronaphthalene diketone and synthesis method thereof Download PDFInfo
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- CN111635314A CN111635314A CN202010558827.XA CN202010558827A CN111635314A CN 111635314 A CN111635314 A CN 111635314A CN 202010558827 A CN202010558827 A CN 202010558827A CN 111635314 A CN111635314 A CN 111635314A
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- resin monomer
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- photoresist resin
- diketone
- hexahydronaphthalene
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- 229920005989 resin Polymers 0.000 title claims abstract description 48
- 239000011347 resin Substances 0.000 title claims abstract description 48
- 239000000178 monomer Substances 0.000 title claims abstract description 40
- 229920002120 photoresistant polymer Polymers 0.000 title claims abstract description 27
- 238000001308 synthesis method Methods 0.000 title claims abstract description 7
- HFBMWMNUJJDEQZ-UHFFFAOYSA-N acryloyl chloride Chemical compound ClC(=O)C=C HFBMWMNUJJDEQZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- -1 alkyl Grignard reagent Chemical class 0.000 claims abstract description 11
- 239000007818 Grignard reagent Substances 0.000 claims abstract description 8
- VHRYZQNGTZXDNX-UHFFFAOYSA-N methacryloyl chloride Chemical compound CC(=C)C(Cl)=O VHRYZQNGTZXDNX-UHFFFAOYSA-N 0.000 claims abstract description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 5
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 4
- 150000001335 aliphatic alkanes Chemical class 0.000 claims abstract description 3
- 150000001924 cycloalkanes Chemical class 0.000 claims abstract description 3
- 239000001257 hydrogen Substances 0.000 claims abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 3
- 239000011261 inert gas Substances 0.000 claims abstract description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract 2
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 39
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 16
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 8
- 238000005886 esterification reaction Methods 0.000 claims description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 238000003747 Grignard reaction Methods 0.000 claims description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- JRHZUTRCOROHFL-UHFFFAOYSA-N 3,3-dimethyl-4-propan-2-yl-4a,5,6,7-tetrahydro-4H-naphthalene-1,2-dione Chemical compound CC(C)C1C2CCCC=C2C(=O)C(=O)C1(C)C JRHZUTRCOROHFL-UHFFFAOYSA-N 0.000 claims 6
- 230000002194 synthesizing effect Effects 0.000 claims 5
- 238000005530 etching Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000001259 photo etching Methods 0.000 abstract description 3
- 230000000379 polymerizing effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 22
- 239000000543 intermediate Substances 0.000 description 17
- 239000002253 acid Substances 0.000 description 12
- 150000001875 compounds Chemical class 0.000 description 11
- GZUXJHMPEANEGY-UHFFFAOYSA-N bromomethane Chemical compound BrC GZUXJHMPEANEGY-UHFFFAOYSA-N 0.000 description 10
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- 239000002952 polymeric resin Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 6
- 229940102396 methyl bromide Drugs 0.000 description 5
- 239000012074 organic phase Substances 0.000 description 5
- 239000000376 reactant Substances 0.000 description 5
- 238000004090 dissolution Methods 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000012043 crude product Substances 0.000 description 3
- 239000005457 ice water Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 229920006037 cross link polymer Polymers 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006552 photochemical reaction Methods 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010189 synthetic method Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- AQNQQHJNRPDOQV-UHFFFAOYSA-N bromocyclohexane Chemical group BrC1CCCCC1 AQNQQHJNRPDOQV-UHFFFAOYSA-N 0.000 description 1
- RDHPKYGYEGBMSE-UHFFFAOYSA-N bromoethane Chemical compound CCBr RDHPKYGYEGBMSE-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/52—Esters of acyclic unsaturated carboxylic acids having the esterified carboxyl group bound to an acyclic carbon atom
- C07C69/533—Monocarboxylic acid esters having only one carbon-to-carbon double bond
- C07C69/54—Acrylic acid esters; Methacrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/36—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions with formation of hydroxy groups, which may occur via intermediates being derivatives of hydroxy, e.g. O-metal
- C07C29/38—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions with formation of hydroxy groups, which may occur via intermediates being derivatives of hydroxy, e.g. O-metal by reaction with aldehydes or ketones
- C07C29/40—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions with formation of hydroxy groups, which may occur via intermediates being derivatives of hydroxy, e.g. O-metal by reaction with aldehydes or ketones with compounds containing carbon-to-metal bonds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/14—Preparation of carboxylic acid esters from carboxylic acid halides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/14—The ring being saturated
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2602/00—Systems containing two condensed rings
- C07C2602/02—Systems containing two condensed rings the rings having only two atoms in common
- C07C2602/14—All rings being cycloaliphatic
- C07C2602/26—All rings being cycloaliphatic the ring system containing ten carbon atoms
- C07C2602/28—Hydrogenated naphthalenes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Materials For Photolithography (AREA)
Abstract
The invention discloses a degradable photoresist resin monomer synthesized by isopropyl dimethyl hexahydronaphthalene diketone and a synthesis method thereof, relating to the field of photoresist resin, wherein the structural formula of the resin monomer is as follows:
wherein R is1Is a saturated alkane or cycloalkane, R2Is hydrogen or methyl, and the synthesis method comprises the following steps: under the protection of inert gas, 8-isopropyl-2, 5-dimethyl hexahydronaphthalene-1, 6(2H, 5H) -diketone (I) reacts with alkyl Grignard reagent or cycloalkyl Grignard reagent to obtain an intermediate (II);and (3) reacting the intermediate (II) with acryloyl chloride or methacryloyl chloride under an alkaline condition to obtain a resin monomer (III). The polymerized resin formed by polymerizing the resin monomer and other resin monomers has better etching resistance, is beneficial to improving the edge roughness of a developed pattern, and greatly improves the resolution of a photoetching pattern.
Description
Technical Field
The invention relates to the field of photoresist resin, in particular to a resin monomer and a synthetic method thereof.
Background
The photolithography technique is a fine processing technique for transferring a pattern designed on a mask plate to a pattern on a substrate by using the chemical sensitivity of a photolithography material (particularly a photoresist) under the action of visible light, ultraviolet rays, electron beams and the like through the processes of exposure, development, etching and the like.
The main components of the photoresist are resin, photoacid generator, and corresponding additives and solvents, and these materials have chemical sensitivity with light (including visible light, ultraviolet light, electron beam, etc.) and undergo a photochemical reaction to change their solubility in a developing solution. According to the difference of photochemical reaction mechanism, the photoresist is divided into a positive photoresist and a negative photoresist: after exposure, the solubility of the photoresist in a developing solution is increased, and the photoresist with the same pattern as that of the mask is obtained and is called as a positive photoresist; after exposure, the photoresist has reduced solubility or even no solubility in a developing solution, and a negative photoresist with a pattern opposite to that of the mask is obtained.
The resin is a polymer polymerized by a plurality of resin monomers, wherein the acid-sensitive resin monomer is an important component for realizing the dissolution difference of the resin in the developing solution before and after exposure, the common acid-sensitive resin monomer only has one acid-sensitive group, the resin monomer is a linear polymer and has weaker etching resistance, and the dissolution difference in the developing solution after exposure is only determined by the acid-sensitive resin monomer, so that the phenomenon of insufficient resolution is caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a degradable photoresist resin monomer synthesized from isopropyl dimethyl hexahydronaphthalene diketone and a synthesis method thereof.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a degradable photoresist resin monomer, which has the following structural formula:
As a preferred technical solution of the present invention, the specific structure of the resin monomer includes:
in addition, the invention also provides a synthetic method of the resin monomer, and the synthetic route of the resin monomer is as follows:
the synthesis steps are as follows:
the first step of Grignard reaction, under the protection of inert gas, 8-isopropyl-2, 5-dimethyl hexahydronaphthalene-1, 6(2H, 5H) -diketone (I) reacts with alkyl Grignard reagent or cycloalkyl Grignard reagent, water is added for quenching after the reaction is finished, and the intermediate (II) is obtained after post-treatment and purification;
and (2) performing esterification reaction, namely reacting the intermediate (II) with acryloyl chloride or methacryloyl chloride under an alkaline condition, and performing post-treatment and purification to obtain a resin monomer (III).
As a preferred technical scheme of the invention, the temperature of the Grignard reaction is 0-30 ℃, and the solvent is anhydrous ether.
As a preferred technical scheme of the invention, the reaction temperature of the esterification reaction is 0-70 ℃, and the solvent is selected from tetrahydrofuran, toluene or chloroform.
It is worth mentioning that in order to ensure basic conditions for the esterification reaction, a base is added to the system, preferably triethylamine and pyridine.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a new photoresist resin monomer, the resin monomer contains two unsaturated carbon-carbon double bonds, can generate cross linking in the polymerization process with other resin monomers (including acid-sensitive resin monomer containing only one polymerization group), form three-dimensional network structure polymer resin, the generated cross-linked polymer resin has better anti-etching performance, when exposed, the photo-acid generator generates acid, in the exposed area, the (methyl) acrylic ester on the main chain is broken under the acid condition, the main chain of the polymer resin is broken to generate products with smaller molecular weight, the solubility of the exposed resin in the developing solution is increased, because the difference of the dissolution speed of the polymer resin before and after exposure in the developing solution is increased, the edge roughness of the developed pattern is improved, the resolution of the photoetching pattern is greatly improved, and the resin monomer contains bridge ring structure, the anti-etching performance of the unexposed area is increased, there is also a significant contribution to the resolution improvement.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the following examples, which are set forth to illustrate and explain the present invention and are not to be construed as limiting the present invention.
Example 1
The first step is as follows: a. preparing a methyl Grignard reagent: adding magnesium chips (2.1g, 86mmol) into anhydrous ether (15mL), adding one iodine tablet, dissolving methyl bromide (8.1g, 85mmol) in ether (25mL) to prepare a solution, adding the ether solution (6mL) of the methyl bromide into the reaction solution under the protection of nitrogen, after a few minutes, slightly boiling the reaction solution, allowing the color of iodine to disappear, stirring, continuously dropwise adding the rest of the ether solution of the methyl bromide, adding ether (20mL), heating to keep slightly boiling, and refluxing for half an hour; b. synthesis of intermediates 1-2: under the protection of nitrogen, cooling the prepared methyl Grignard reagent by ice water, dropwise adding an ether (20mL) solution of 8-isopropyl-2, 5-dimethylhexahydronaphthalene-1, 6(2H, 5H) -diketone (10.0g, 42mmol) under stirring, controlling the dropwise adding speed, keeping the reaction solution slightly boiling, continuing to stir at 25 ℃ for half an hour after dropwise adding, separating out white solid in the reaction solution, cooling the reaction solution by ice water, slowly dropwise adding 20% dilute sulfuric acid (20mL), separating an ether layer after dropwise adding, extracting an aqueous phase by ethyl acetate (100mL multiplied by 3) for three times, combining organic phases, and purifying a crude product after concentrating the organic phase by column chromatography to obtain an intermediate 1-2(8.9g, 33mmol, 78.4%);
the second step is that: dissolving the intermediate 1-2(8.9g, 33mmol) in tetrahydrofuran (120mL), adding triethylamine (13.5g, 133mmol), cooling to 0 ℃ with ice water, slowly adding a tetrahydrofuran (50mL) solution of acryloyl chloride (6g, 66mmol) under nitrogen protection, heating the reaction solution to 25 ℃, continuing to react for 5 hours, concentrating the reaction solution under vacuum to remove the solvent, adding ethyl acetate (50mL), adding a saturated aqueous solution of sodium bicarbonate (20mL), separating an organic phase, extracting an aqueous phase with ethyl acetate (80 mL. times.3) for three times, combining the organic phases, washing the organic phase with saturated saline, drying with anhydrous sodium sulfate, spin-drying to obtain a crude product, and pulping the crude product with methyl tert-butyl ether to obtain the compound 1-3(10.5g, 28mmol, 84.1%).
Example 2
The first step is as follows: the operation steps and the raw material charge amount are the same as the first step of the reaction in the example 1, and the reaction obtains a compound 2-2(9.1g, 34mmol, 80.1%);
the second step is that: the procedure was the same as for the second reaction of example 1, with the reactants and charge: intermediate 1-2(8.9g, 33mmol) was replaced with intermediate 2-2(9.1g, 34mmol), acryloyl chloride (6g, 66mmol) was replaced with methacryloyl chloride (7.1g, 68mmol), triethylamine (13.5g, 133mmol) was replaced with triethylamine (13.8g, 136mmol) to afford compound 2-3(10.8g, 29mmol, 84.6%).
Example 3
The first step is as follows: the procedure was the same as the first step of example 1, except that methyl bromide (8.1g, 85mmol) was changed to ethyl bromide (9.3g, 85mmol), to give compound 3-2(9.5g, 32mmol, 75.7%);
the second step is that: the procedure was the same as for the second reaction of example 1, with the reactants and charge: intermediate 1-2(8.9g, 33mmol) was replaced with intermediate 3-2(9.5g, 32mmol), acryloyl chloride (6g, 66mmol) was replaced with acryloyl chloride (5.8g, 64mmol), triethylamine (13.5g, 133mmol) was replaced with triethylamine (13g, 128mmol) to afford compound 3-3(11g, 27mmol, 84.9%).
Example 4
The first step is as follows: the procedure was the same as in the first step of example 3 to give compound 4-2(9.7g, 33mmol, 77.3%);
the second step is that: the procedure was the same as for the second reaction of example 1, with the reactants and charge: intermediate 1-2(8.9g, 33mmol) was replaced with intermediate 4-2(9.7g, 33mmol), acryloyl chloride (6g, 66mmol) was replaced with methacryloyl chloride (6.9g, 66mmol), triethylamine (13.5g, 133mmol) was replaced with triethylamine (13.3g, 131mmol) to afford compound 4-3(11.8g, 27mmol, 83.4%).
Example 5
The first step is as follows: the procedure was the same as in the first step of example 1, wherein methyl bromide (8.1g, 85mmol) was replaced with cyclohexyl bromide (13.8g, 85mmol), to give compound 5-2(11.7g, 29mmol, 68.3%);
the second step is that: the procedure was the same as for the second reaction of example 1, with the reactants and charge: intermediate 1-2(8.9g, 33mmol) was replaced with intermediate 5-2(11.7g, 29mmol), acryloyl chloride (6g, 66mmol) was replaced with acryloyl chloride (5.3g, 59mmol), triethylamine (13.5g, 133mmol) was replaced with triethylamine (11.7g, 116mmol) to afford compound 5-3(10.8g, 21mmol, 72.8%).
Example 6
The first step is as follows: the procedure was the same as in the first step of example 5 to give compound 6-2(11.5g, 28mmol, 67.2%);
the second step is that: the procedure was the same as for the second reaction of example 1, with the reactants and charge: intermediate 1-2(8.9g, 33mmol) was replaced with intermediate 6-2(11.5g, 28mmol), acryloyl chloride (6g, 66mmol) was replaced with methacryloyl chloride (6g, 57mmol), triethylamine (13.5g, 133mmol) was replaced with triethylamine (11.5g, 114mmol) to afford compound 6-3(11.5g, 21mmol, 74.8%).
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a new photoresist resin monomer, the resin monomer contains two unsaturated carbon-carbon double bonds, can generate cross linking in the polymerization process with other resin monomers (including acid-sensitive resin monomer containing only one polymerization group), form three-dimensional network structure polymer resin, the generated cross-linked polymer resin has better anti-etching performance, when exposed, the photo-acid generator generates acid, in the exposed area, the (methyl) acrylic ester on the main chain is broken under the acid condition, the main chain of the polymer resin is broken to generate products with smaller molecular weight, the solubility of the exposed resin in the developing solution is increased, because the difference of the dissolution speed of the polymer resin before and after exposure in the developing solution is increased, the edge roughness of the developed pattern is improved, the resolution of the photoetching pattern is greatly improved, and the resin monomer contains bridge ring structure, the anti-etching performance of the unexposed area is increased, there is also a significant contribution to the resolution improvement.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The degradable photoresist resin monomer synthesized by isopropyl dimethyl hexahydronaphthalene diketone is characterized in that the structure of the resin monomer is as follows:
2. The degradable photoresist resin monomer synthesized from isopropyldimethylhexahydronaphthalene dione as claimed in claim 1, wherein the specific structure of the resin monomer comprises:
3. the synthesis method of the degradable photoresist resin monomer synthesized by isopropyl dimethyl hexahydronaphthalene diketone is characterized in that the reaction route of the synthesis method is as follows:
the synthesis steps are as follows:
the first step of Grignard reaction, under the protection of inert gas, 8-isopropyl-2, 5-dimethyl hexahydronaphthalene-1, 6(2H, 5H) -diketone (I) reacts with alkyl Grignard reagent or cycloalkyl Grignard reagent, water is added for quenching after the reaction is finished, and the intermediate (II) is obtained after post-treatment and purification;
and (2) performing esterification reaction, namely reacting the intermediate (II) with acryloyl chloride or methacryloyl chloride under an alkaline condition, and performing post-treatment and purification to obtain a resin monomer (III).
4. The method for synthesizing the degradable photoresist resin monomer synthesized from isopropyldimethylhexahydronaphthalene dione as claimed in claim 3, wherein the temperature of the Grignard reaction is 0-30 ℃.
5. The method for synthesizing a degradable photoresist resin monomer synthesized from isopropyldimethylhexahydronaphthalene dione as claimed in claim 3, wherein the solvent of the Grignard reaction is anhydrous ethyl ether.
6. The method for synthesizing the degradable photoresist resin monomer synthesized from isopropyldimethylhexahydronaphthalene dione as claimed in claim 3, wherein the reaction temperature of the esterification reaction is 0-70 ℃.
7. The method for synthesizing a degradable photoresist resin monomer synthesized from isopropyldimethylhexahydronaphthalene dione as claimed in claim 3, wherein the solvent for the esterification reaction is selected from tetrahydrofuran, toluene or chloroform.
8. The method for synthesizing a degradable photoresist resin monomer synthesized from isopropyldimethylhexahydronaphthalene dione as claimed in claim 3, wherein triethylamine or pyridine is added to the system in order to ensure the alkaline condition of the esterification reaction.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004042477A1 (en) * | 2002-11-04 | 2004-05-21 | Dongjin Semichem Co., Ltd. | Chemically amplified polymer having pendant group with dicyclohexyl and resist composition comprising the same |
| TW201804249A (en) * | 2016-05-13 | 2018-02-01 | 住友化學股份有限公司 | Photoresist composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004042477A1 (en) * | 2002-11-04 | 2004-05-21 | Dongjin Semichem Co., Ltd. | Chemically amplified polymer having pendant group with dicyclohexyl and resist composition comprising the same |
| TW201804249A (en) * | 2016-05-13 | 2018-02-01 | 住友化學股份有限公司 | Photoresist composition |
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