Polarity‐Insensitive Triphenylmethyl‐Type Luminescent Organic Radicals with Simple Benzene Derivative Substitution DOI

Zhuoyang Hu,

Mehrigul Abdulahat,

Zhaoze Ding

et al.

ChemPhotoChem, Journal Year: 2025, Volume and Issue: unknown

Published: May 21, 2025

This study focuses on the impact of alternant phenyl substituents photophysical properties tris‐(2,4,6‐trichlorophenyl)methyl (TTM)‐type radicals. Most donor–acceptor‐type luminescent systems show solvent‐polarity sensitivity, which limits their applications. Herein, three alternate π‐conjugated biphenyl/terphenyl are attached to TTM unit. Results reveal that connection modes and types benzene ring derivatives lead distinct charge transfer (CT) locally excited state hybrid emitters due differences in conjugation degree. All radicals exhibit polarity‐insensitive red emission (626–690 nm), photoluminescence quantum yields (PLQYs) increase with solvent polarity. Specifically, linear‐conjugated TTM‐DPh has higher photostability but lower PLQY, while nonlinear‐conjugated TTM‐3DPh TTM‐TPh have nearly 10‐fold PLQYs. The studies suggest degree hybridization level between CT ground states account for these properties.

Language: Английский

Polarity‐Insensitive Triphenylmethyl‐Type Luminescent Organic Radicals with Simple Benzene Derivative Substitution DOI

Zhuoyang Hu,

Mehrigul Abdulahat,

Zhaoze Ding

et al.

ChemPhotoChem, Journal Year: 2025, Volume and Issue: unknown

Published: May 21, 2025

This study focuses on the impact of alternant phenyl substituents photophysical properties tris‐(2,4,6‐trichlorophenyl)methyl (TTM)‐type radicals. Most donor–acceptor‐type luminescent systems show solvent‐polarity sensitivity, which limits their applications. Herein, three alternate π‐conjugated biphenyl/terphenyl are attached to TTM unit. Results reveal that connection modes and types benzene ring derivatives lead distinct charge transfer (CT) locally excited state hybrid emitters due differences in conjugation degree. All radicals exhibit polarity‐insensitive red emission (626–690 nm), photoluminescence quantum yields (PLQYs) increase with solvent polarity. Specifically, linear‐conjugated TTM‐DPh has higher photostability but lower PLQY, while nonlinear‐conjugated TTM‐3DPh TTM‐TPh have nearly 10‐fold PLQYs. The studies suggest degree hybridization level between CT ground states account for these properties.

Language: Английский

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