Citation: Wang Xuan, Gan Nan, Gu Mingxing, Ling Kun, Ma Chaoqun, Ma Huili, Yao Wei, Zhang Yujian, Shi Huifang, An Zhongfu, Huang Wei. Subtle structure tailoring of metal-free triazine luminogens for highly efficient ultralong organic phosphorescence[J]. Chinese Chemical Letters, ;2019, 30(11): 1935-1938. doi: 10.1016/j.cclet.2018.12.023 shu

Subtle structure tailoring of metal-free triazine luminogens for highly efficient ultralong organic phosphorescence

Wang Xuan ^a,1 ,
Gan Nan ^a,1 ,
Gu Mingxing ^a ,
Ling Kun ^a ,
Ma Chaoqun ^a ,
Ma Huili ^a ,
Yao Wei ^a ,
Zhang Yujian ^b ,
Shi Huifang ^a,*, ,
An Zhongfu ^a,*, ,
Huang Wei ^a,c,*,

a.
Key Laboratory of Flexible Electronics(KLOFE) & Institute of Advanced Materials(IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials(SICAM), Nanjing Tech University(Nanjing Tech), Nanjing 211816, China
b.
Department of Materials Chemistry, Huzhou University, Huzhou 313000, China
c.
Shanxi Institute of Flexible Electronics(SIFE), Northwestern Polytechnical University(NPU), Xi'an 710072, China

iamhfshi@njtech.edu.cn

iamzfan@njtech.edu.cn

wei-huang@njtech.edu.cn

Received Date: 10 November 2018
Revised Date: 17 December 2018
Accepted Date: 18 December 2018
Available Online: 19 November 2018

Figures(4)

Ultralong organic phosphorescent materials have invoked considerable attention for their great potential in sensing, data encryption, information anti-counterfeiting and so forth. However, effective ways to achieve highly efficient ultralong organic phosphorescence (UOP) in metal-free organic materials remain a great challenge. Herein, we designed three isomers based on asymmetric triazines with various bromine substituted positions. Impressively, phosphorescence efficiency of p-BrAT in solid state can reach up to 9.7% with a long lifetime of 386 ms, which was one of the highest efficient UOP materials reported so far. Theoretical calculations further demonstrated that para-substitution exhibited the most effective radiative transition for triplet excitons. These results will provide an effective approach to achieving highly efficient UOP materials.
- Ultralong organic phosphorescence (UOP),
- Isomerism,
- Crystal engineering,
- H-aggregation,
- Intermolecular interactions
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