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Regulating room temperature phosphorescence of carbazole quaternization pyridine in polymer through Hofmeister effect
  • +6
  • Runying He,
  • Yun Yang,
  • Qian Zhou,
  • Shasha Chang,
  • Yi Cheng,
  • Xiurong Ma,
  • Yonggang Shi,
  • Liyan Zheng,
  • Qiue Cao
Runying He
Yunnan University
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Yun Yang
Yunnan University
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Qian Zhou
Yunnan University
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Shasha Chang
Yunnan University
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Yi Cheng
Yunnan University
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Xiurong Ma
Yunnan University
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Yonggang Shi
Yunnan University
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Liyan Zheng
Yunnan University

Corresponding Author:[email protected]

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Qiue Cao
Yunnan University
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Abstract

Hofmeister effect is a famous physical chemistry phenomenon that was reported a hundred years ago, which firstly refers to the action of certain salts to decrease the solubility of proteins while others increase. The Hofmeister effect on the luminescent properties of cationic organic fluorophore is still obscure, especially for their room temperature phosphorescence (RTP). Herein, hydrophilic groups (quaternization pyridine) were introduced into carbazole molecules to obtain a series of carbazole derivatives (named CZ-Py +) with different counter anions in the Hofmeister series. These carbazole derivatives displayed tunable fluorescent color from cyan to yellow in the solid state following the Hofmeister sequence and anti-Hofmeister behavior in aqueous solution. Moreover, RTP material with tunable emission color and lifetime was achieved by doping CZ-Py + with Hofmeister series anion in polymethyl methacrylate (PMMA) and polyvinyl alcohol (PVA), which displayed good performance in time getting information encryption and anti-counterfeiting.
07 Apr 2024Submitted to Aggregate
13 Apr 2024Reviewer(s) Assigned
24 Apr 2024Editorial Decision: Revise Major