Achieving Dual Persistent Room-Temperature Phosphorescence from Polycyclic Luminophores via Inter-/Intramolecular Charge Transfer

被引：61

作者：

Li, Feiyang ^{[1
,2
]}

Guo, Song ^{[1
,2
]}

Qin, Yanyan ^{[1
,2
]}

Shi, Yuxiang ^{[1
,2
]}

Han, Meiping ^{[1
,2
]}

An, Zhongfu ^{[3
,4
]}

Liu, Shujuan ^{[1
,2
]}

Zhao, Qiang ^{[1
,2
]}

Huang, Wei ^{[1
,2
,5
]}

机构：

[1] NUPT, IAM, Key Lab Organ Elect & Informat Displays, Nanjing 210023, Jiangsu, Peoples R China

[2] NUPT, IAM, Jiangsu Key Lab Biosensors, Nanjing 210023, Jiangsu, Peoples R China

[3] Nanjing Tech Univ NanjingTech, Key Lab Flexible Elect KLOFE, Nanjing 211800, Jiangsu, Peoples R China

[4] Nanjing Tech Univ NanjingTech, IAM, Nanjing 211800, Jiangsu, Peoples R China

[5] Northwestern Polytech Univ, SIFE, Xian 710072, Shaanxi, Peoples R China

来源：

ADVANCED OPTICAL MATERIALS | 2019年 / 7卷 / 19期

基金：

中国博士后科学基金;

关键词：

charge transfer; heavy-atom-free; lifetimes; room temperature phosphorescence; pi interactions; DERIVATIVES; TRANSISTORS;

D O I：

10.1002/adom.201900511

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Organic persistent room-temperature phosphorescence (OPRTP) materials show great prospects in optoelectronic and biomedical applications, such as display, anti-counterfeiting, sensing, and bioimaging. However, the reported OPRTP material systems are relatively rare, and it is a challenge to achieve the tunability of OPRTP. In this work, a series of polycyclic luminophores are developed based on an indole derivative (6,12-diphenyl-5,6,11,12-tetrahydroindolo[3,2-b] carbazole, Ben-H) as the structural skeleton. These compounds unexpectedly exhibit dual OPRTP at 442 to 623 nm with lifetimes spanning from 2 to 759 ms. Experimental data and theoretical calculations suggest that C-H...pi interactions in the T-shaped dimers facilitate the intermolecular charge transfer, resulting in OPRTP in the yellow spectral region, and the persistent blue emission results from the intramolecular charge transfer. This work contributes to better understand the key role of charge transfer in achieving OPRTP and broaden the scope of OPRTP materials.

引用

页数：8

共 41 条

[41] Organic field-effect optical waveguides [J].

Zhao, Guangyao ;

Dong, Huanli ;

Liao, Qing ;

Jiang, Jun ;

Luo, Yi ;

Fu, Hongbing ;

Hu, Wenping .

NATURE COMMUNICATIONS, 2018, 9

← 1 2 3 4 5 →