• Bulletin of the Korean Chemical Society
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• 제25권6호
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• pp.777-778
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• 2004

• Macromolecular Research
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• 제12권4호
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• pp.407-412
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• 2004

A new hydroxyl group-containing conjugated ionic polymer, poly[2-ethynyl-N-(p-hydroxyphenylethyl)pyridinium bromide], was synthesized by the activated polymerization of 2-ethynylpyridine with p-(2-bromoethyl) phenol without any additional initiator or catalyst. The polymerization proceeded well to give a moderate yield (65%) of polymer at a reaction temparature of 90$^{\circ}C$. Another polymer, poly[2-ethynyl-N-(p-hydroxyphenylethyl)pyridinium tetraphenylborate], was readily prepared by the ion-exchange reaction of poly[2-ethynyl-N-(p-hydroxyphenylethyl)pyridinium bromide] with sodium tetraphenylborate. These polymers were completely soluble in organic solvents such as DMF, DMSO, and acetone, but insoluble in water and ether. Instrumental analyses, such as NMR, IR, and UV-Vis spectroscopies, indicated that the new materials have conjugated polymer backbone systems with the designed substituents and counter anions. X-Ray diffraction analyses of the polymers indicated that they were mostly amorphous.

• Macromolecular Research
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• 제8권3호
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• pp.131-136
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• 2000

The synthesis of poly(2-ethynylpyridine) having glycidyl functionality was performed by the direct polymerization of 2-ethynylpyridine and epibromohydrin under mild reaction conditions without any initiator and catalysts. The polymerization proceeded well to give the resulting poly(2-ethynylpyridinium bromide) with a glycidyl functionality having relativity high molecular weight in high yields. The polymer structure was characterized by various instrumental methods to have the conjugated polymer backbone structure having glycidyl functionality. This ionic polymer was completely soluble in water, methanol, DMF, DMSO, and N,N-dimethylacetamide, but insoluble in THF, toluene, acetone, nitrobenzene, and n-hexane. This polymer system exhibited the UV-visible absorption around 300 and 520 nm and red photoluminescence spectrum around 725 nm.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2010년도 제3회 국제학회
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• pp.88-89
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• 2010

• 공업화학
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• 제35권4호
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• pp.296-302
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• 2024

염화 철(III)을 이용한 2-에티닐피리딘의 in-situ 4차염화 중합을 통하여 이온성 폴리아세틸렌-염화 철(III) 복합체를 용이하게 합성하였다. 합성한 폴리아세틸렌-염화 철(III) 복합체의 구조를 여러 가지 분석장비를 통해 확인한 결과 설계한 염화 철(III)-피리디늄 치환기를 갖는 공액구조 고분자가 생성되었음을 확인할 수 있었다. 본 중합의 메커니즘은 첫 번째 단계에서 형성된 에티닐피리디늄 염의 중합반응이 개시되고 전파되는 것으로 분석되었다. P2EP-FeCl₃ 복합체의 전기 광학 및 전기화학적 특성을 연구하였다. P2EP-FeCl₃ 복합체의 UV-visible 스펙트럼에서 흡수 최대값은 480 nm 및 533 nm이었고 PL 최대값은 598 nm로 나타났다. P2EP-FeCl₃ 복합체의 순환 전압전류 특성 측정결과 산화 피크와 환원 피크가 비가역적인 전기화학적 거동을 보였으며, 복합체의 산화 환원 과정의 동역학은 스캔 속도 대비 산화 전류 값의 도표부터 확산 제어 프로세스에 가까운 것으로 확인되었다.

• Bulletin of the Korean Chemical Society
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• 제20권4호
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• pp.451-455
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• 1999

The polymerization of 2-ethynylpyridine by alkyl bromide carrying carbazole moiety, 6-(N-carbazolyl)hexyl bromide, relatively proceed well to give the corresponding poly[6'-(N-carbazolyl)hexyl-2-ethynylpyridinium bromide) in high yields under DMF reflux conditions without any initiator or catalyst. This polymerization was influenced upon the initial monomer concentration. The polymer yields and inherent viscosities of the resulting polymers were in the range of 34-85% and 0.11-0.21 dL/g, respectively. Instrumental analyses using NMR, IR, and UV-visible spectroscopies and elemental analysis indicated that the resulting polymer has a conjugated polymer backbone system carrying pyridine and n-hexyl carbazole moiety. The polymers were mostly brown powders and completely soluble in DMF, DMSO, nitrobenzene, and formic acid. The photoluminescence spectrum of the dilute polymer solution with the excitation at 383 nm exhibited two sharp peaks at 495 and 540 nm.