Synthesis and Physical Property of Polymers Containing an Indolocarbazole Moiety

Self Cite

In this study, we have attempted to prepare novel aromatic polyamides containing indolo[3,2-b]carbazole (INC) moiety in the main chain. For this purpose, the synthesis of an aromatic dicarboxyl compound containing INC moiety was carried out. Novel aromatic polyamides containing INC moiety in the main chain were prepared by the polycondensation of the dicarboxyl INC monomer with the four kinds of diamine monomers. The obtained polymers were soluble in aprotic polar solvents such as N,N-dimethyl acetamide and N-methyl-2-pyrrolidone. According to the thermal gravimetric analysis, the obtained polyamides exhibited the relatively high thermal stability and the high char yield nearly 50 % at 1000 °C in the thermal degradation. Furthermore, it was found from the evaluation of the photonic property that the UV-Vis absorption and fluorescence spectra of these polyamides showed the similar tendency of the photonic property of INC.

Section: Photonic Properties Of the Polymersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Syntheses and Properties of Polyamides Containing Indolocarbazole Moiety in the Main Chain

Nakama

Yamashita

Akimoto

et al. 2014

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“…In our previous study, the preparations of several polymers containing INC moiety in the main chain or side chain were investigated and the thermal and photonic properties of these polymers were estimated [8][9][10][11][12]. 1-(4-vinylbenzyl)-7-octylindolo [3,2-b]carbazole (VINC-C8), and the copolymers of VINC-C8 with styrene or MMA were prepared by radical polymerizations, and the thermal and photonic properties were investigated.…”

Section: Introductionmentioning

confidence: 99%

“…Akimoto et al described that the photoluminescence intensity of INC containing polymer solutions increased as the INC content decreased, because of the concentration quenching caused by the condensation of intermolecular interactions between INC components [8,10,11]. Therefore, to investigate the effect of INC concentration on the photoluminescence intensity, UV-Vis absorption and photoluminescence spectra of PAAINC were measured with changing the concentrations of polymer solutions, as shown in Figure 1(c) and (d).…”

mentioning

confidence: 99%

Synthesis of poly(acryl amide) containing indolo[3,2-<i>b</i>]carbazole moiety in the side chain

Tomoki

Kawamoto

2016

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Poly(acryl amide)s containing INC moiety in the side chain were prepared by radical polymerization using 6-(4-acryloylaminobenzoylamino)-1,7-dioctylindolo[3,2-b]carbazole (AAINC) as a novel monomer. The obtained polymers exhibited the good solubility and the high thermal stability, where Tg and Td 5 of the homopolymer of AAINC were over 200°C and 400°C, respectively. In addition, Tg of copolymers of AAINC with N-(p-tolyl)acrylamide increased as the INC content increased. It was found that the HOMO, LUMO levels and the energy gap of AAINC and polymers showed the similar values as those of INC, and the UV-Vis absorption and fluorescence spectra of these polymers were also similar to the tendency of photonic property of INC. Furthermore, the fluorescence intensity of these polymers was higher than that of the monomer, AAINC. Especially, the copolymer having 5% INC content showed the higher fluorescence intensity than the copolymers having the higher INC content.

“…However, only few studies have been reported on the synthesis of INC-containing polymers. In our previous study [7][8][9], we have investigated the synthesis of a novel monomer containing indolocarbazole moiety, 1-(4-vinylbenzyl)-7-octylindolo[3,2-b]carbazole (VINC-C 8 ), and the copolymers of VINC-C 8 with styrene were prepared by a radical polymerization. Then, it was found that the obtained copolymers showed the amorphous state and the thermal stability of the copolymers increased as the INC content increased.…”

Section: Introductionmentioning

confidence: 99%

Syntheses and Photonic Properties of Copolymers Containing Indolocarbazole Moiety in the Side Chain

Yamashita

Akimoto

Kawamoto³

et al. 2013

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In this study, the synthesis of an indolo [3,2-b]carbazole (INC) derivative containing an octyl group and a pvinylbenzyl group at N-positions was carried out as a monomer compound to obtain copolymers with methyl methacrylate (MMA) by a radical polymerization. These copolymers showed the amorphous state and exhibited the higher thermal stability as INC content increased, which maintained the high emission property of INC moiety. Furthermore, the spin-coating and casting films could be prepared form the copolymer solutions. Then, it was found that the strong photoluminescence was observed for these polymer films, the INC content of which was ca. 5 mol%.