Suppression of nonradiative transitions of triplet excitons<i>via</i>a fused/non-fused strategy for realizing efficient room-temperature phosphorescence

Shu, Haiyang; Liu, YuLu; Chen, Liang; Cheng, Zhiqiang; Wang, Xin; Wu, Xiaofu; Tong, Hui; Wang, Lixiang

doi:10.1039/d3tc01124k

J. Mater. Chem. C

2023

DOI: 10.1039/d3tc01124k

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Suppression of nonradiative transitions of triplet excitonsviaa fused/non-fused strategy for realizing efficient room-temperature phosphorescence

Haiyang Shu,

YuLu Liu,

Liang Chen

et al.

Abstract: Two purely organic room temperature phosphorescence (RTP) molecules containing sulfur atoms and carbonyl groups, namely FBPSP with a fused-ring structure and BPSP with a non-fused ring structure, are designed and...

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2024

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Achieving Ultralong Room-Temperature Phosphorescence Via Single-Bond Locking Planarization Strategy

Zhou,

Mu,

et al. 2024

ACS Materials Lett.

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Ultralong room-temperature phosphorescence (URTP) materials have been widely studied due to their broad applications. However, achieving phosphorescent materials with ultralong lifetimes is engaging and challenging. In this work, the indolo[3,2,1-j,k]carbazole (ICZ) with excellent planarity is obtained through twice single-bond locking on triphenylamine (TPA). Doping ICZ into a rigid matrix, URTP materials with a lifetime of 3.24 s and a photoluminescence quantum yield of 37.37% is successfully prepared.. The analysis of single-crystal, temperature-dependent photophysical characterization, Huang−Rhys factor, and theoretical calculations demonstrates that it is possible to make the molecules more planar and rigid by single-bond locking, which can inhibit the structural relaxation of the excited state and thus reduce the nonradiative transition to generate URTP. In addition, we achieve full-color afterglow by energy transfer. The potential applications of anticounterfeiting and optoelectronic information display of these URTP materials have been conducted. This work is an important reference for the construction of URTP materials.

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Achieving Ultralong Room-Temperature Phosphorescence Via Single-Bond Locking Planarization Strategy

Zhou,

Mu,

et al. 2024

ACS Materials Lett.

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Positional effects of electron-donating and withdrawing groups on the photophysical properties of single benzene fluorophores

Kim,

Kim

et al. 2024

Chem. Commun.

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Suppression of nonradiative transitions of triplet excitonsviaa fused/non-fused strategy for realizing efficient room-temperature phosphorescence

Abstract: Two purely organic room temperature phosphorescence (RTP) molecules containing sulfur atoms and carbonyl groups, namely FBPSP with a fused-ring structure and BPSP with a non-fused ring structure, are designed and...

Cited by 2 publications

References 77 publications

Achieving Ultralong Room-Temperature Phosphorescence Via Single-Bond Locking Planarization Strategy

Achieving Ultralong Room-Temperature Phosphorescence Via Single-Bond Locking Planarization Strategy

Positional effects of electron-donating and withdrawing groups on the photophysical properties of single benzene fluorophores

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