Photo-optical properties of poly(oxadiazole-imide)s containing naphthalene rings

Abstract

Two series of poly(oxadiazole-imide)s based on naphthalene-containing anhydrides and aromatic diamines containing preformed oxadiazole rings have been synthesized and their properties studied and compared. One series contains four polymers: two of them are based on naphthalene-1,4,5,8-tetracarboxylic dianhydride and the other two are based on bis(ketonaphthalicanhydride). The other series contains four copolymers based on mixtures of these dianhydrides with hexafluoroisopropylidenediphthalic anhydride. The thermal stability of these polymers and copolymers and their photo-optical properties in solution and solid state have been investigated.

Thermal, optical, electrochemical, and electrochromic characteristics of novel polyimides bearing the Acridine Yellow moiety

“…All polyimides were obtained according the procedure described in literature [18,19]. The polymers were synthesized in a one-step polycondensation reaction at high temperature of equimolar amounts of Acridine Yellow with dianhydrides NDTA, 4,4 0 -tetraphthaloyl-bis(1.8-naphthalene dicarboxylic)dianhydride or 4,4 0 -(4,4 0 -isopropylidene-diphenoxy)bis(phthalic anhydride) to produce polyimides (PI-1, PI-2 and PI-3), or a mixture 1:1 of Acridine Yellow and 4,4 0 -(4,4 0 -isopropylidene-diphenoxy)bis(phthalic anhydride)/NDTA or 4,4 0 -tetraphthaloyl-bis(1.8-naphthalene dicarboxylic)dianhydride to obtain copolyimides (PI-4 and PI-5).…”

“…In the past century such polynaphthalimides have been investigated as soluble, high thermal stable polymers [16,17]. Recently attention concerns of PNIs obtained from bis(ketonaphthalic-anhydride) is focused on their potential application as materials for optoelectronics [18,19]. To the best of our knowledge, there are only two papers in which luminescence properties of copolyimides prepared from 4,4 0 -tetraphthaloyl-bis (1,8-naphthalene dicarboxylic)dianhydride are described [18,19].…”

“…Recently attention concerns of PNIs obtained from bis(ketonaphthalic-anhydride) is focused on their potential application as materials for optoelectronics [18,19]. To the best of our knowledge, there are only two papers in which luminescence properties of copolyimides prepared from 4,4 0 -tetraphthaloyl-bis (1,8-naphthalene dicarboxylic)dianhydride are described [18,19]. Bruma et al investigated copolynaphthalimides prepared from two dianhydrides: bis(ketonaphthalic-anhydride) and 4,4 0 -(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and diamines containing oxadiazole ring [18,19].…”

Physical, optical and gas transport properties of new processable polyimides and poly(amideimide)s obtained from 4,4′-[oxybis(4,1-phenylenethio)]dianiline and aromatic dianhydrides

“…The growth of modern technology has posed a constantly increasing need for materials that can perform well under harsh conditions, such as elevated temperatures, 4 and processable PIs with special properties have become a subject of great interest all over the world. 5,6 It was found that compounds containing imine rings have prospective applications in organic (opto)electronics and related fields, and that they are exemplary as materials for fabricating field-effect transistors, [6][7][8] organic light-emitting diodes, 9-12 solar cells [12][13][14] and photonic devices. [15][16][17] With regard to the PI microstructure, much effort is being devoted to the design and synthesis of PIs with thioether linkages.…”

Optical Studies of Poly(hydroxy imide) to Polybenzoxazole Thermal Rearrangement

“…Polyimides (PI) belong to a group of polymers with a large number of applications because of their unique properties such as high thermal stability, good chemical resistance, and mechanical durability . Moreover, low dielectric constant, optical transparency, easy processability, and adjustment with semiconductor device technology requirements cause polyimides and their derivatives good candidates for optoelectronic and photovoltaic applications …”