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Royal Society of Chemistry, Chemical Science, 1(6), p. 789-797

DOI: 10.1039/c4sc01911c

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A New pH Sensitive Fluorescent and White Light Emissive Material through Controlled Intermolecular Charge Transfer

Journal article published in 2014 by Y. I. Park, Olena Postupna, Youngil-S. Park, Andriy Zhugayevych ORCID, Hwangyu Shin, Young-Shin Park, Beomjin Kim, Hung-Ju Yen, Pradeep Cheruku, Jennifer S. Martinez, Jongwook W. Park, Sergei Tretiak ORCID, Hsing-Ling Wang
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

A new, pH dependent and water-soluble, conjugated oligomer (amino, trimethylammonium oligophenylene vinylene, ATAOPV) was synthesized with a quaternary ammonium salt and an aromatic amine at the two ends of a π-conjugated oligomer, thus creating a strong dipole across the molecule. A unique white light LED is successfully fabricated from a stimuli responsive organic molecule whose emission properties are dominated by the pH value of the solution through controlled intermolecular charge transfer.