Tuning the Photophysical Properties of Symmetric Squarylium Dyes: Investigation on the Halogen Modulation Effects

Weiben Chen; Simeng Zhang; Gaole Dai; Ying Chen; Miao Li; Xiaoyu Zhao; Yulan Chen; Long Chen

doi:10.1002/chem.201804393

Tuning the Photophysical Properties of Symmetric Squarylium Dyes: Investigation on the Halogen Modulation Effects

Chemistry. 2019 Jan 7;25(2):469-473. doi: 10.1002/chem.201804393. Epub 2018 Dec 11.

Authors

Weiben Chen¹, Simeng Zhang¹, Gaole Dai², Ying Chen¹, Miao Li¹, Xiaoyu Zhao¹, Yulan Chen¹, Long Chen¹

Affiliations

¹ Department of Chemistry, Institute of Molecular Plus, and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin, 300072, P. R. China.
² Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Jiangsu, 215123, P. R. China.

PMID: 30277620
DOI: 10.1002/chem.201804393

Abstract

A series of symmetric squarylium dyes (SQDPA-X) with different halogen (X=F, Cl, Br, I) substituents have been developed. The photophysical properties could be facilely tuned by the halogen modulation effects. The strategy of incorporating different halogen substitutions into AIE active luminogens enables a facile approach for exploring new intriguing organic fluorescent dyes.

Keywords: aggregation-induced emission; halogen; mechanochromism; symmetric squarylium dyes; vapochromism.

Abstract

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