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Triblock copolymer of poly-n-vinylcarbazole and polyisobutylene and preparation method thereof

A vinylcarbazole and block copolymer technology, which is applied in the field of triblock copolymers and their preparation, can solve the problems of difficult film formation and weakened fluorescence, and achieves extremely easy film formation, high fluorescence intensity, and increased fluorescence. The effect of efficiency

Active Publication Date: 2019-05-28
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims at the technical problem that the fluorescence of polyvinyl carbazole decreases with the increase of concentration and is not easy to form a film in the prior art, and proposes a triblock copolymer of poly N-vinyl carbazole and polyisobutylene and its preparation method

Method used

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  • Triblock copolymer of poly-n-vinylcarbazole and polyisobutylene and preparation method thereof
  • Triblock copolymer of poly-n-vinylcarbazole and polyisobutylene and preparation method thereof
  • Triblock copolymer of poly-n-vinylcarbazole and polyisobutylene and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0039] Pour cold liquid into the vacuum glove box and cool to the polymerization temperature -100°C, add refluxed n-hexane as a solvent 30ml into the treated polymerization bottle, and mix well; then add the initiator 5-tert-butyl-1, The initiator system composed of 3-bis(1-methoxy-1methylethyl)benzene (0.001M) and co-initiator titanium tetrachloride (0.036M) was aged for 30 minutes, and the intermediate monomer isobutylene was added (IB) (5.33M), after 180 minutes of reaction, add end-capping agent 1,1-diphenylethylene (0.001M), and after 30 minutes of reaction, polyisobutylene with methoxy groups at both ends is obtained; BCl 3 (0.036M), add the hard segment monomer N-vinylcarbazole (NVK) (0.08M), react for 10min, and finally add methanol (CH 3 OH), after terminating the reaction, the solvent was removed from the product, and vacuum-dried at 35° C. to constant weight.

Embodiment 2

[0041] Pour cold liquid into the vacuum glove box and cool to the polymerization temperature -90°C, add 30ml of n-hexane / monochloromethane with a volume ratio of 80 / 20 into the treated polymerization bottle, mix well; then add the initiator 5-tert-butyl-1,3-bis(1-acyloxy-1 methylethyl)benzene (0.0056M) and co-initiator trichlorotriethyldialuminum (0.336M), 6HPy (0.0224M) Initiator system composed of chemical composition, after aging for 15min, add the intermediate monomer isobutylene (20M), after reacting for 150min, add 0.6ml (0.0224M) of end-capping agent 1,1-bis(4-methylphenyl)ethylene, and react Obtain after 40min and have two ends be the methoxy polyisobutene; Add BF in the polyisobutylene of end methoxy 3 (0.336M), add the hard segment monomer N-vinyl carbazole (0.64M) to react for 30min, and finally add methanol (CH 3 OH), after terminating the reaction, the solvent was removed from the product, and vacuum-dried at 35° C. to constant weight.

Embodiment 3

[0043] Pour cold liquid into the vacuum glove box and cool it down to the polymerization temperature -80°C, add 30ml of n-hexane / monochloromethane with a volume ratio of 50 / 50 into the treated polymerization bottle as a solvent, mix well; then add the initiator Initiator composed of 5-tert-butyl-1,3-bis(1-chloro-1methylethyl)benzene (0.00005M) and co-initiator boron trifluoride (0.0006M), EtOAc (0.0004M) System, after aging for 5 minutes, add the intermediate monomer isobutylene (0.64M), add the end-capping agent 1,1-diphenylethylene (0.0004M) after 100 minutes of reaction, and obtain polyisobutylene with methoxy at both ends after 45 minutes of reaction ; Add BF to methoxy-terminated polyisobutene 3 (0.0006M), add the hard segment monomer N-vinyl carbazole (0.047M) to react for 1.5h, and finally add methanol (CH 3 OH), after terminating the reaction, the solvent was removed from the product, and vacuum-dried at 35° C. to constant weight.

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Abstract

The invention discloses a triblock copolymer of poly(N-vinylcarbazole) and polyisobutylene, and a preparation method thereof, belonging to the technical field of organic luminescent materials. The preparation method comprises the following steps: preparing methoxy-terminated polyisobutylene through cationic polymerization, then replacing a coinitiator and carrying out secondary initiation to synthesize the triblock copolymer of poly(N-vinylcarbazole) and polyisobutylene. The soft segment of the triblock copolymer prepared in the invention is isobutene, and two ends of the triblock copolymer are hard-segment N-vinylcarbazole; and the triblock copolymer has high fluorescence intensity, can be dissolved in a variety of organic solvents, easily forms a film, overcomes the problem of difficulty in film formation of poly(N-vinylcarbazole), and is applicable to photoconductor materials including conducting resin, batteries and electrostatic printing.

Description

technical field [0001] The invention belongs to the technical field of organic luminescent materials, and in particular relates to a triblock copolymer of poly-N-vinylcarbazole and polyisobutylene and a preparation method thereof. Background technique [0002] Organic optoelectronic materials are emerging frontiers following the non-polar luminescent materials. Poly(N-vinyl carbazole), PVK, with its unique nitrogen-containing condensed ring structure, has high-efficiency hole transport performance and wide The blue light performance of the forbidden band is often used as a hole transport material and a luminescent host material. Although PVK has good fluorescence intensity in dilute solution, its fluorescence intensity will be very weak as the concentration increases due to fluorescence concentration quenching, and PVK is not easy to form a film, which greatly limits its application. [0003] Polyisobutylene-based thermoplastic elastomers have many unique properties, such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00C09K11/06
CPCC08F293/00C09K11/06C09K2211/1466
Inventor 伍一波胡月丽郭文莉李树新杨丹张民王浩张敏
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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