Ultralong Organic Phosphorescence: From Material Design to Applications,Accounts of Chemical Research

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Ultralong Organic Phosphorescence: From Material Design to Applications
Accounts of Chemical Research ( IF 16.4 ) Pub Date : 2022-11-11 , DOI: 10.1021/acs.accounts.2c00514
Huifang Shi _{1,

2} , Wei Yao ₁ , Wenpeng Ye ₁ , Huili Ma ₁ , Wei Huang _{1,

2,

3} , Zhongfu An ₁

Affiliation

Organic phosphorescence is defined as a radiative transition between the different spin multiplicities of an organic molecule after excitation; here, we refer to the photoexcitation. Unlike fluorescence, it shows a long emission lifetime (∼μs), large Stokes shift, and rich excited state properties, attracting considerable attention in organic electronics during the past years. Ultralong organic phosphorescence (UOP), a type of persistent luminescence in organic phosphors, shows an emission lifetime of over 100 ms normally according to the resolution limit of the naked eye. According to the Jablonski energy diagram, two prerequisites are necessary for UOP generation and enhancement. One is to promote intersystem crossing (ISC) of the excitons from the excited singlet to triplet states by enhancing the spin–orbit coupling (SOC); the other is to suppress the nonradiative transitions of the excitons from the excited triplet states.

中文翻译：

超长有机磷光：从材料设计到应用

有机磷光被定义为有机分子在激发后不同自旋多重性之间的辐射跃迁；这里，我们指的是光激发。与荧光不同，它表现出长的发射寿命（~μs）、大的斯托克斯位移和丰富的激发态特性，在过去几年中引起了有机电子学领域的广泛关注。超长有机磷光（UOP）是有机磷光体中的一种持久发光，根据肉眼的分辨率极限，通常显示出超过100毫秒的发射寿命。根据 Jablonski 能量图，UOP 生成和增强需要两个先决条件。一是通过增强自旋轨道耦合（SOC）来促进激子从激发单重态到三重态的系间窜越（ISC）；另一个是抑制激子从激发三重态的非辐射跃迁。

更新日期：2022-11-11

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