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Crystallization-induced emission enhancement of alkyl chain-dependent pyrene-based luminogens: Visual detection of nitro-explosives

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posted on 2022-11-10, 12:29 authored by Ze-Dong Yu, Jing-Yi Cao, Hua-Long Li, Guang Yang, Wen-Xuan Zhao, Chuan-Zeng Wang, Shu-Hai Chen, Mark ElsegoodMark Elsegood, Carl Redshaw, Tahehiko Yamato

In view of the widespread applications and urgent need for efficient blue emitting materials, the synthesis of such materials has seen renewed interest. In the present work, three alkyl chain-dependent blue emitting pyrene-based luminogens were synthesized and characterized. The experimental results show that these luminogens exhibited high photoluminescence efficiency both in solution (> 86%) and in the solid state (> 35%). Interestingly, 1,3,6,8-tetrakis(pentylphenyl)pyrene (TPPy), as a photoelectric functional material, was endowed with higher quantum yield (72%) and competitiveness due to a remarkable crystallization-induced emission enhancement (CIEE) property. More importantly, TPPy exhibits high sensitivity and selectivity for ortho-nitroaniline (o-NA) with low limit of detection (9.99 × 10–8 M), which is mainly due to the distinctive odd-even effects of the terminal alkyl chain. The results demonstrate that this type of luminogen can potentially be utilized for practical applications in the field of contaminant or explosive detection as a sensitive and portable fluorimeter.

Funding

Natural Science Foundation of Shandong Province (Grant No. ZR2019BB067)

University of Hull

History

School

  • Science

Department

  • Chemistry

Published in

Journal of Luminescence

Volume

253

Issue

2023

Publisher

Elsevier

Version

  • AM (Accepted Manuscript)

Rights holder

© Elsevier

Publisher statement

This paper was accepted for publication in the Journal of Luminescence and the definitive published version is available at https://doi.org/10.1016/j.jlumin.2022.119439

Acceptance date

2022-10-17

Publication date

2022-10-20

Copyright date

2022

ISSN

0022-2313

eISSN

1872-7883

Language

  • en

Depositor

Dr Mark Elsegood. Deposit date: 9 November 2022

Article number

119439

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