Synthesis of substituted poly(1‐vinylpyrene)s and investigation of their fluorescent properties

Abstract

A series of functionalized linear poly(1‐vinylpyrene) (PVP) polymers bearing substituents such as NO2, CHO, NH2, Br, and CHC(CN)2, were prepared by chemical modification of PVP in solution. The degree of substitution in PVPCHC(CN)2 was varied from 40% to nearly 100% by control of the reaction conditions. The other polymers were partially functionalized. The UV‐visible and fluorescence spectroscopy of the polymers were studied in solution. The influence of solvent polarity, excitation energy, and degree of substitution on the fluorescence of the polymers were examined. © 1993 John Wiley & Sons, In

Amino-Functionalized Poly(arylene ether ketone)s

“…In the case of poly(arylene ether ketone)s, a reduction in inherent viscosity upon sulfonation using chlorosulfonic acid has also been observed. , It should be noted in this context that Kim et al encountered difficulties with completing the decomposition of the amine chlorostannate complex, obtained by the reduction of poly (3,3‘-dinitro-4,4‘-benzidineisophthalamide) with stannous chloride, owing to the inability of NaOH to diffuse through the rigid polymer matrix . In another instance, involving the reduction of nitro-substituted poly(1-vinylpyrene) using stannous chloride, elemental analysis indicated a significant decrease in the nitrogen content, probably due to the partial cleavage of some of the nitro-substituted pyrene units back to pyrene …”

“…9 In another instance, involving the reduction of nitro-substituted poly(1-vinylpyrene) using stannous chloride, elemental analysis indicated a significant decrease in the nitrogen content, probably due to the partial cleavage of some of the nitro-substituted pyrene units back to pyrene. 10 Another way of introducing functional groups into a polymer backbone involves the end-capping of the growing polymer chain upon treatment with appropri-ately monofunctionalized monomers. Amino-terminated poly(aryl ether ketone)s were synthesized in this way.…”

Photoimageable polyimides derived from α,α‐(4‐amino‐3,5‐dimethylphenyl)phenylmethane and aromatic dianhydride

“…Recently, many reports describing fully imidized polyimides with improved solubility have appeared in the literature, in which solubility enhancement is achieved either by the incorporation of flexible asymmetric substitutes or by the introduction of bulky pendant groups into the rigid polymer backbone 17–30. However, there are few articles regarding the solubility improvement of inherent photoimagable polyimides.…”

“…Recently, many reports describing fully imidized polyimides with improved solubility have appeared in the literature, in which solubility enhancement is achieved either by the incorporation of flexible asymmetric substitutes or by the introduction of bulky pendant groups into the rigid polymer backbone. [17][18][19][20][21][22][23][24][25][26][27][28][29][30] However, there are few articles regarding the solubility improvement of inherent photoimagable polyimides. A new phenyl-substituted aromatic diamine, ␣,␣-(4-amino-3,5-dimethylphenyl)phenylmethane (BADP), was synthesized in our laboratory and was employed in a polycondensation reaction with BTDA to afford a series of fully imidized polyimides.…”