Photo-controllable Luminescence from Radicals Leading to Ratiometric Emission Switching via Dynamic Intermolecular Coupling

Jia-Ming Jin; Wen-Cheng Chen; Ji-Hua Tan; Yang Li; Yingxiao Mu; Ze-Lin Zhu; Chen Cao; Shaomin Ji; Dehua Hu; Yanping Huo; Hao-Li Zhang; Chun-Sing Lee

doi:10.1002/anie.202214281

Author(s)

Jia-Ming Jin
Wen-Cheng Chen
Yingxiao Mu
Shaomin Ji
Dehua Hu
Yanping Huo
Hao-Li Zhang

Related Research Unit(s)

Detail(s)

Original language	English
Article number	e202214281
Journal / Publication	Angewandte Chemie (International Edition)
Volume	62
Issue number	6
Online published	31 Oct 2022
Publication status	Published - 1 Feb 2023

Link(s)

DOI	DOI https://doi.org/10.1002/anie.202214281 Final Published version
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Attachment(s)	Documents 126949731.pdf Post-print, 1.49 MB, PDF Publisher's Copyright Statement COPYRIGHT TERMS OF DEPOSITED POSTPRINT FILE: This is the peer reviewed version of the following article: Jin, J-M., Chen, W-C., Tan, J-H., Li, Y., Mu, Y., Zhu, Z-L., Cao, C., Ji, S., Hu, D., Huo, Y., Zhang, H-L., & Lee, C-S. (2023). Photo-controllable Luminescence from Radicals Leading to Ratiometric Emission Switching via Dynamic Intermolecular Coupling. Angewandte Chemie (International Edition), 62(6), Article e202214281, which has been published in final form at https://doi.org/10.1002/anie.202214281. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85145898868&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(cb09d77a-7465-4cca-a6d5-15949391a602).html

Abstract

The development of photoinduced luminescent radicals with dynamic emission color is still challenging. Herein we report a novel molecular radical system (TBIQ) that shows photo-controllable luminescence, leading to a wide range of ratiometric color changes via light excitation. The conjugated skeleton of TBIQ is decorated with steric-demanding tertiary butyl groups that enable appropriate intermolecular interaction to make dynamic intermolecular coupling possible for controllable behaviors. We reveal that the helicenic pseudo-planar conformation of TBIQ experiences a planarization process after light excitation, leading to more compactly stacked supermolecules and thus generating radicals via intermolecular charge transfer. The photo-controllable luminescent radical system is employed for a high-level information encryption application. This study may offer unique insight into molecular dynamic motion for optical manufacturing and broaden the scope of smart-responsive materials for advanced applications.