Preparation method of size-controllable nano structural conductive polyaniline

A conductive polyaniline, nanostructure technology, applied in the field of nanomaterials, can solve the problem of difficult to obtain monodisperse or oriented micro/nanostructured products, poor controllability of polymer morphology and size, damage to polymer morphology and In order to overcome the problems of composition and other problems, it can overcome the poor controllability of product morphology and size, the method is simple, and the post-processing is exempted.

Inactive Publication Date: 2007-09-19
INST OF CHEM CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the preparation technology of the template itself when using the "template method" in the prior art to prepare nano-conductive polyaniline, the preparation technology of the template itself is very complicated, and the post-treatment of removing the template after the reaction is complicated and often destroys the morphology of the polymer. and components; while using the "soft template method" to prepare nano-conductive polyaniline, the controllability of the morphology and size of the polymer is poor, and it is difficult to obtain the defects of monodisperse or oriented micro / nanostructure products, thereby providing A Simpler, Cheaper, and Size-Controllable Preparation Method of Nanostructured Conductive Polyaniline

Method used

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  • Preparation method of size-controllable nano structural conductive polyaniline
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  • Preparation method of size-controllable nano structural conductive polyaniline

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Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1, using ammonium persulfate (APS) as oxidant, under the condition of interfacial polymerization, prepare nanostructure conductive polyaniline

[0040] 1. Add 0.2ml of aniline (2.0mmol) to 10ml of chloroform solution, place in an ice bath (0-5°C) and stir magnetically until a uniform solution is formed;

[0041] 2. Dissolve 2.0 mmol of ammonium persulfate (E ox =2.0V) in 5ml of distilled water, and put it in the refrigerator for 30 minutes;

[0042]3. Carefully add 5ml of ammonium persulfate aqueous solution to the above-mentioned chloroform solution dissolved in aniline, and immediately form a clear water / organic phase interface;

[0043] 4. Put the above mixed solution under the condition of ice bath for 8 hours to stand and react, the product is formed at the interface and continuously enters the water phase;

[0044] 5. The product in the above water phase was extracted and washed three times with distilled water, absolute ethanol and ether in sequence,...

Embodiment 2

[0046] Embodiment 2, take ammonium persulfate (APS) as oxidant, prepare nano-conductive polyaniline under homogeneous polymerization condition

[0047] 1. Add 0.2ml of aniline (2.0mmol) to 15ml of distilled water, place in an ice bath (0-5°C) and stir magnetically until a uniform solution is formed;

[0048] 2. Add 2.0 mmol of ammonium persulfate (E ox =2.0V) was dissolved in 15ml of distilled water, and placed in the refrigerator for 30 minutes;

[0049] 3. Add the ammonium persulfate aqueous solution to the above-mentioned aniline-dissolved aqueous solution;

[0050] 4. The above mixed solution was allowed to stand and react for 12 hours in an ice bath (0-5°C);

[0051] 5. The product in the above water phase was extracted and washed three times with distilled water, absolute ethanol and ether in sequence, and finally vacuum-dried at room temperature for 24 hours to obtain dark green polyaniline powder.

[0052] The dark green product is determined by infrared and ultravi...

Embodiment 3

[0053] Embodiment 3, with Ce (SO 4 ) 2 Preparation of nano-conductive polyaniline under the condition of interfacial polymerization as oxidant

[0054] 1. Add 0.2ml of aniline (2.0mmol) to 10ml of chloroform solution, place in an ice bath (0-5°C) and stir magnetically until a uniform solution is formed;

[0055] 2. Add 4.0 mmol of Ce(SO 4 ) 2 (E ox =1.44V) was dissolved in 5ml of distilled water, and placed in the refrigerator for 30 minutes;

[0056] 3. Add 5ml Ce(SO 4 ) 2 The aqueous solution was carefully added to the above-mentioned chloroform solution in which aniline was dissolved, and a clear water / organic phase interface was formed immediately;

[0057] 4. Put the above mixed solution under the condition of ice bath for 8 hours to stand and react, the product is formed at the interface and continuously enters the water phase;

[0058] 5. The product in the above water phase was extracted and washed three times with distilled water, absolute ethanol and ether in...

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Abstract

The invention relates to a method of preparing size-controllable nano structure conductive polyaniline, which includes steps: adding solution of monomer aniline to solution of oxidant under temperature of 0-5 DEG C, carrying polymerization reaction according conventional interfacial polymerization method or homopolymerization method, after conventional post-treatment, obtaining the size-controllable nano structure conductive polyaniline. The oxidant is selected according to diameter of the needed polyaniline nano structure by following formula: log d=0.69+0.71Eox, wherein d is diameter of nano structure polyaniline, Eox is oxidation-reduction potential of used oxidant. Compared with traditional ''template method'' and ''soft template method'', advantages of the invention are: template and post-treatment thereof is avoided, reaction medium is simplified, method is more simple and low-cost, defect of bad controllability to production configuration and size of traditional template-free method is overcomed, and size completely controllable conductive polyaniline nano fiber can be prepared by selecting oxidant with fitting oxidation-reduction potential.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and in particular relates to a preparation method of nanostructure conductive polyaniline with controllable size. Background technique [0002] The study of conductive polymers has important scientific significance. In just two decades, conducting polymer research has developed from some simple polymers to a new interdisciplinary research field. The Nobel Prize in Chemistry in 2000 was awarded to A.J.Heeger, A.G.MacDiarmid and Shirakawa Hideki, three scientists who pioneered conductive polymers, which also fully demonstrates the scientific community's recognition of the importance of research on conductive polymers. [0003] Recently, due to the high electrical conductivity and controllable electrical and electrochemical properties of micro / nano-structured conductive polymers, scientists have attracted great attention in the field of new nano-functional materials. hot topic of scientific rese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02
Inventor 万梅香丁杭军
Owner INST OF CHEM CHINESE ACAD OF SCI
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