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Photoluminescent poly(4-vinylpyridine)-based ionic liquids coded with L- and D-histidine: a supramolecular self-assembly leading to the formation of red-shifted photoluminescent helical aggregates

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Abstract

Herein, photoluminescent poly(4-vinylpyridine)-based ionic liquids (PILs) bound with D- and L-histidine were synthesized for the first time and fully characterized by NMR, IR and UV-vis spectroscopy and TG analysis. The chiral PILs self-assembled into helical aggregates, which were isolated by two different methods, namely, by the addition of a poor solvent and by the slow evaporation of solvent. The isolated nanofibers, comprising helical aggregates, were observed to be thin in the case of the former and thick in the case of the latter method. Moreover, the helical nanofibers formed herein were several hundreds of micrometers long. The aggregation of the PIL chains in the helical nanofibers was further revealed by the significantly red-shifted photoluminescence spectra.

Graphical abstract: Photoluminescent poly(4-vinylpyridine)-based ionic liquids coded with l- and d-histidine: a supramolecular self-assembly leading to the formation of red-shifted photoluminescent helical aggregates

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Publication details

The article was received on 04 Feb 2019, accepted on 16 Apr 2019 and first published on 17 Apr 2019


Article type: Paper
DOI: 10.1039/C9PY00181F
Polym. Chem., 2019, Advance Article

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    Photoluminescent poly(4-vinylpyridine)-based ionic liquids coded with L- and D-histidine: a supramolecular self-assembly leading to the formation of red-shifted photoluminescent helical aggregates

    P. Puneet, A. Horechyy, R. K. Srivastava, B. Nandan and M. Fujiki, Polym. Chem., 2019, Advance Article , DOI: 10.1039/C9PY00181F

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