Highly Efficient Ultralong Organic Phosphorescence through Intramolecular-Space Heavy-Atom Effect

被引：160

作者：

Shi, Huifang ^{[1
,2
]}

Song, Lulu ^{[1
,2
]}

Ma, Huili ^{[1
,2
]}

Sun, Chen ^{[1
,2
]}

Huang, Kaiwei ^{[1
,2
]}

Lv, Anqi ^{[1
,2
]}

Ye, Wenpeng ^{[1
,2
]}

Wang, He ^{[1
,2
]}

Cai, Suzhi ^{[1
,2
]}

Yao, Wei ^{[1
,2
]}

Zhang, Yujian ^{[3
]}

Zheng, Ruilin ^{[4
]}

An, Zhongfu ^{[1
,2
]}

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

机构：

[1] Nanjing Tech Univ NanjingTech, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, KLOFE, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

[2] Nanjing Tech Univ NanjingTech, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, IAM, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

[3] Huzhou Univ, Dept Mat Chem, East 2nd Ring Rd,759, Huzhou 313000, Peoples R China

[4] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, 9 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China

[5] NPU, SIFE, 127 West Youyi Rd, Xian 710072, Shaanxi, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2019年 / 10卷 / 03期

基金：

中国国家自然科学基金;

关键词：

ROOM-TEMPERATURE PHOSPHORESCENCE; ACHIEVING PERSISTENT; LIFETIME; OXYGEN; DESIGN; STATE;

D O I：

10.1021/acs.jpclett.8b03712

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Metal-free organic phosphorescent materials have attracted considerable attention in the fields of organic electronics and bioelectronics. However, it remains a great challenge to achieve organic phosphors with high quantum efficiency in a single-component system. We designed and synthesized two organic phosphors (PDCz and PDBCz) with an ultralong organic phosphorescence (UOP) feature. Both molecules showed ultralong emission lifetime of >200 ms. For PDBCz crystal, it was found that the absolute phosphorescence quantum efficiency reaches up to 38.1%. Combining the experimental and theoretical studies, the highly efficient UOP was mainly attributed to the intramolecular space heavy-metal effect, which facilitates the spin orbit coupling between singlet and triplet excited states to effectively promote the intersystem crossing. This study will provide a new platform to rationally design highly efficient UOP materials and show its potential in the field of flexible electronics.

引用

页码：595 / 600

页数：11

共 33 条

[1] Room-Temperature Phosphorescence From Films of Isolated Water-Soluble Conjugated Polymers in Hydrogen-Bonded Matrices [J].

Al-Attar, Hameed A. ;

Monkman, Andrew P. .

ADVANCED FUNCTIONAL MATERIALS, 2012, 22 (18) :3824-3832

[2]

An ZF, 2015, NAT MATER, V14, P685, DOI [10.1038/NMAT4259, 10.1038/nmat4259]

[3] Simultaneously Enhancing Efficiency and Lifetime of Ultralong Organic Phosphorescence Materials by Molecular Self-Assembly [J].

Bian, Lifang ;

Shi, Huifang ;

Wang, Xuan ;

Ling, Kun ;

Ma, Huili ;

Li, Mengpin ;

Cheng, Zhichao ;

Ma, Chaoqun ;

Cai, Suzhi ;

Wu, Qi ;

Gan, Nan ;

Xu, Xiangfei ;

An, Zhongfu ;

Huang, Wei .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2018, 140 (34) :10734-10739

[4]

Bolton O, 2011, NAT CHEM, V3, P205, DOI [10.1038/nchem.984, 10.1038/NCHEM.984]

[5]

Cai S., 2018, ANGEW CHEM, V130, P4069, DOI DOI 10.1002/ange.201800697

[6] Enhancing Ultralong Organic Phosphorescence by Effective π-Type Halogen Bonding [J].

Cai, Suzhi ;

Shi, Huifang ;

Tian, Dan ;

Ma, Huili ;

Cheng, Zhichao ;

Wu, Qi ;

Gu, Mingxing ;

Huang, Ling ;

An, Zhongfu ;

Peng, Qian ;

Huang, Wei .

ADVANCED FUNCTIONAL MATERIALS, 2018, 28 (09)

[7] Visible-Light-Excited Ultralong Organic Phosphorescence by Manipulating Intermolecular Interactions [J].

Cai, Suzhi ;

Shi, Huifang ;

Li, Jiewei ;

Gu, Long ;

Ni, Yun ;

Cheng, Zhichao ;

Wang, Shan ;

Xiong, Wei-wei ;

Li, Lin ;

An, Zhongfu ;

Huang, Wei .

ADVANCED MATERIALS, 2017, 29 (35)

[8] Oxygen Sensing Difluoroboron Dinaphthoylmethane Polylactide [J].

DeRosa, Christopher A. ;

Samonina-Kosicka, Jelena ;

Fan, Ziyi ;

Hendargo, Hansford C. ;

Weitzel, Douglas H. ;

Palmer, Gregory M. ;

Fraser, Cassandra L. .

MACROMOLECULES, 2015, 48 (09) :2967-2977

[9] TRIPLET STATE - ITS RADIATIVE AND NONRADIATIVE PROPERTIES [J].

ELSAYED, MA .

ACCOUNTS OF CHEMICAL RESEARCH, 1968, 1 (01) :8-&

[10] Organic Nanocrystals with Bright Red Persistent Room-Temperature Phosphorescence for Biological Applications [J].

Fateminia, S. M. Ali ;

Mao, Zhu ;

Xu, Shidang ;

Yang, Zhiyong ;

Chi, Zhenguo ;

Liu, Bin .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2017, 56 (40) :12160-12164

← 1 2 3 4 →