CN104198401A - Preparation of alcohol response cellulose photonic crystal film - Google Patents
Preparation of alcohol response cellulose photonic crystal film Download PDFInfo
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- CN104198401A CN104198401A CN201410470038.5A CN201410470038A CN104198401A CN 104198401 A CN104198401 A CN 104198401A CN 201410470038 A CN201410470038 A CN 201410470038A CN 104198401 A CN104198401 A CN 104198401A
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Abstract
The invention relates to application that an 'environment-friendly material' cellulose is combined with a photonic crystal technique to prepare a novel response optical material, that is, cellulose photonic crystal (CPCF), and the material is applied to detection on alcohols and belongs to the fields of applied chemistry and analysis testing. Compared with a conventional gel material, cellulose is excellent in biodegradability and good optical property and is an environment-friendly material. Due to response to ethanol in a color change manner, the material provided by the invention can be used as a simple non-invasion type in-vivo alcohol amount tester.
Description
Technical field
The present invention relates to biodegradable " green material " cellulose and photonic crystal technology to combine, prepare a kind of novel response optical material, be cellulose crystal film with photon (CPCF), and use it for the detection to alcohols, belong to applied chemistry and analytical test field.
Background technology
Photonic crystal is that the material with different refractive index is sequentially arranged formed ordered structural material in space according to certain cycle, uses the method for vertical sedimentation self assembly can prepare the three-D photon crystal with opal structural.The ordered structure of photonic crystal meets Bragg diffraction law to diffraction of light, and when its lattice parameter is during in particular range, the schemochrome that diffraction goes out, in visible-range, can be identified by the human eye.At present, there is a large amount of research that the structure of photonic crystal is embedded in gel and prepares and stimulate to external world the optical sensor that has response as heavy metal ion, glucose, incretion interferent etc., and some responsive materials wherein can present obvious change color, for open hole detection in the future lays the foundation.
As the accessory substance of economy and industrial development, volatile organic compounds becomes a kind of new environmental contaminants that have a strong impact on human health, and alcohols is as most important industrial solvent wherein, is widely used in all trades and professions.Result of study shows, the contacting of long-time and alcohols can make the symptoms such as the mankind produce dizziness, feel sick, expiratory dyspnea, in the time of seriously, also can cause cancer.And current existing detection technique as gas phase-mass spectrometry (GC-MS) complicated operation, consuming time, and needs professional person to operate.Therefore, prepare a kind of to alcohols have response, easy operating and economical and practical material very urgent.
The present invention combines cellulose and photonic crystal, prepares a kind of sensing material that alcohols is had to response.Than traditional gel rubber material, cellulose has excellent biodegradability and good optical property, is environmentally friendly material.And the material in the present invention, owing to ethanol being had to the response of change color, can be used as the interior capacity for liquor analyzer of non-intrusion type body of plain type in the future.
Summary of the invention
The object of the invention is to prepare a kind of cellulose crystal film with photon (CPCF) that alcohols is had to response, the problem such as cost is high to solve in classic method, complicated operation.
Object of the present invention is achieved through the following technical solutions:
By the method for vertical self assembly, monodispersed colloid bead is self-assembled on cover glass to the photonic crystal array of three-dimensional order.Then cellulose solution is dripped on photonic crystal array, by osmosis, the gap between bead in array is filled up, then be placed in bio-incubator and heat 3h, make cellulose crystal film with photon (CPCF).
CPCF is placed in respectively to the low concentration atmosphere of liquid, saturated vapour and the variable concentrations of ethanol, n-propanol, isopropyl alcohol and normal butyl alcohol, optical detection is carried out in the reflection displacement to CPCF after balance.The schemochrome of finding CPCF becomes green from blueness after introducing alcohols, and for different alcohols solvents and atmosphere, the red shift amount of reflection peak is different, and for low concentration alcohols atmosphere, along with the increase of gas concentration, red shift amount increases.Depict red shift amount and alcohols gas concentration curve, can be for quantitatively detecting the alcohols atmosphere of variable concentrations.
Wherein cellulose is combined with photonic crystal technology, prepare the friendly shaped material of biology with excellent optical property;
Wherein the particle diameter of polymethylmethacrylate, silicon dioxide, polystyrene colloid bead is 180-230nm;
Wherein the solution concentration of methylcellulose, cellulose acetate, ethyl cellulose is 3-5%;
Wherein heat polymerization temperature is 45-70 ℃.
Embodiment
Below in conjunction with specific embodiment in detail the present invention is described in detail, but is not limited to this.
Embodiment 1
The cellulose crystal film with photon (CPCF) of preparing is cut into size for after 7mm * 7mm, with its reflection wavelength of fiber spectrometer measurement.Afterwards it is dipped in respectively in ethanol, n-propanol, isopropyl alcohol, these four kinds of solvents of normal butyl alcohol, after ready to balance, measures the red shift amount of its reflection wavelength.Analysis result shows, the optic response amount difference of this cellulose crystal film with photon to these four kinds of solvents, and its schemochrome generation significant change.
Embodiment 2
The cellulose crystal film with photon (CPCF) of preparing is cut into after the big or small 7mm * 7mm of being, with fiber spectrometer, records its reflection wavelength.Be attached on the inwall of measuring cup bottle cap, and in measuring cup, splash into respectively ethanol, after n-propanol, isopropyl alcohol, normal butyl alcohol, sealing.Until bottle inner equilibrium, after the saturated vapour of these four kinds of solvents, measure the reflection peak position of material.Analysis result shows, this cellulose crystal film with photon, after the steam of adsorption solvent, shows different optic responses.
Embodiment 3
The cellulose crystal film with photon (CPCF) of preparing is cut into after the big or small 7mm * 7mm of being, with fiber spectrometer, records its reflection wavelength.Be put in the airbag of 0.5L, and passed into the nitrogen of 0.4L, then ethanol, n-propanol, isopropyl alcohol, normal butyl alcohol are injected in airbag and are gasified by sample introduction needle respectively.The concentration of solvent atmosphere is controlled by changing the sample size of solvent.Analysis result shows, this cellulose crystal film with photon has response to the alcohols atmosphere of low concentration, and coloured variation.
Claims (2)
1. preparation and the use of alcohols response cellulose crystal film with photon (CPCF), step is as follows:
By the method for vertical self assembly, monodispersed colloid bead is self-assembled on cover glass to the photonic crystal array of three-dimensional order.Then cellulose solution is dripped on photonic crystal array, by osmosis, the gap between bead in array is filled up, then be placed in bio-incubator and heat 3h, make cellulose crystal film with photon (CPCF).
CPCF is placed in respectively to the low concentration atmosphere of liquid, saturated vapour and the variable concentrations of ethanol, n-propanol, isopropyl alcohol and normal butyl alcohol, optical detection is carried out in the reflection displacement to CPCF after balance.The schemochrome of finding CPCF becomes green from blueness after introducing alcohols, and for different alcohols solvents and atmosphere, the red shift amount of reflection peak is different, and for low concentration alcohols atmosphere, along with the increase of gas concentration, red shift amount increases.Depict red shift amount and alcohols gas concentration curve, can be for quantitatively detecting the alcohols atmosphere of variable concentrations.
2. according to method described in claim 1 step, it is characterized in that:
(1) cellulose is combined with photonic crystal technology, prepare the friendly shaped material of biology with excellent optical property;
(2) particle diameter of polymethylmethacrylate, silicon dioxide, polystyrene colloid bead is 180-230nm;
(3) solution concentration of methylcellulose, cellulose acetate, ethyl cellulose is 3-5%;
(4) heat polymerization temperature is 45-70 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410470038.5A CN104198401A (en) | 2014-09-15 | 2014-09-15 | Preparation of alcohol response cellulose photonic crystal film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410470038.5A CN104198401A (en) | 2014-09-15 | 2014-09-15 | Preparation of alcohol response cellulose photonic crystal film |
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| CN104198401A true CN104198401A (en) | 2014-12-10 |
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| CN201410470038.5A Pending CN104198401A (en) | 2014-09-15 | 2014-09-15 | Preparation of alcohol response cellulose photonic crystal film |
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Citations (6)
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|---|---|---|---|---|
| CN101263378A (en) * | 2005-07-08 | 2008-09-10 | 伊利诺伊大学评议会 | Photonic crystal biosensor structure and fabrication method |
| CN101358242A (en) * | 2008-09-23 | 2009-02-04 | 东南大学 | Compound biochip based on photon crystal |
| US20090159567A1 (en) * | 2002-12-04 | 2009-06-25 | Gun Young Jung | Polymer solution for nanoimprint lithography to reduce imprint temperature and pressure |
| CN101717989A (en) * | 2009-11-13 | 2010-06-02 | 西安交通大学 | Three-dimensional photonic crystal manufacturing method |
| CN101793996A (en) * | 2009-12-25 | 2010-08-04 | 北京理工大学 | Molecular imprinting photonic crystal for detecting glucose |
| CN101934267A (en) * | 2010-08-20 | 2011-01-05 | 中国科学院化学研究所 | Preparation method of self-supporting colloid photon crystal film |
-
2014
- 2014-09-15 CN CN201410470038.5A patent/CN104198401A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090159567A1 (en) * | 2002-12-04 | 2009-06-25 | Gun Young Jung | Polymer solution for nanoimprint lithography to reduce imprint temperature and pressure |
| CN101263378A (en) * | 2005-07-08 | 2008-09-10 | 伊利诺伊大学评议会 | Photonic crystal biosensor structure and fabrication method |
| CN101358242A (en) * | 2008-09-23 | 2009-02-04 | 东南大学 | Compound biochip based on photon crystal |
| CN101717989A (en) * | 2009-11-13 | 2010-06-02 | 西安交通大学 | Three-dimensional photonic crystal manufacturing method |
| CN101793996A (en) * | 2009-12-25 | 2010-08-04 | 北京理工大学 | Molecular imprinting photonic crystal for detecting glucose |
| CN101934267A (en) * | 2010-08-20 | 2011-01-05 | 中国科学院化学研究所 | Preparation method of self-supporting colloid photon crystal film |
Non-Patent Citations (2)
| Title |
|---|
| EMILY D 等: "Morphological and Optical Characterization of Polyelectrolyte Multilayers Incorporating Nanocrystalline Cellulose", 《BIOMACROMOLECULES》 * |
| 周谧: "凝胶光子晶体的组装及响应性研究", 《中国优秀硕士学位论文全文数据库 基础科学辑》 * |
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Application publication date: 20141210 |