Boosting Solid-State Luminescence of Thiazolothiazole Viologen by Incorporating Metal Halide Clusters to Hinder π-Stacking

Xuyi Li, Chen Huang, Yu Fan, Zhiang Bai, Bao Li An, Jiaqiang Xu, Weiwei Zheng, Yue Ling Bai

Research output: Contribution to journalArticlepeer-review

Abstract

A new strategy is developed herein to improve the solid fluorescence of thiazolothiazole viologen by using the ZnCl42- cluster as a scaffold to hinder π-stacking. Importantly, the Cl···H bonds are formed in the solid state to sustain the framework and can be automatically dissociated when dissolved in H2O, thus having no impact on the strong emission in aqueous solution. As such, the first case of organic-inorganic viologen-zinc halide named 4PV·ZnCl4 was designed and synthesized, and a significant increase in photoluminescence quantum yield (ΦF) is realized from 4PV·2Br (ΦF = 0%) to 4PV·ZnCl4F = 27.0%) in solid and from 97% to 98% in H2O. 4PV·ZnCl4 also displays pH stimuli-responsive naked-eye chromic behavior and photoluminescence with different coloring states and intensities. The multifunctional performance of 4PV·ZnCl4 provides a prerequisite for carrying different information, expanding their promising application in multilevel information encryption.

Original languageEnglish (US)
Pages (from-to)46022-46030
Number of pages9
JournalACS Applied Materials and Interfaces
Volume15
Issue number39
DOIs
StatePublished - Oct 4 2023

Keywords

  • color
  • fluorescence
  • information encryption
  • naked-eyes
  • organic−inorganic metal halides
  • thiazolothiazole viologen

ASJC Scopus subject areas

  • Materials Science(all)

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