Effective Internal and External Modulation of Nontraditional Intrinsic Luminescence

被引：66

作者：

Lai, Yueying ^{[1
]}

Zhu, Tianwen ^{[1
]}

Geng, Ting ^{[2
]}

Zheng, Shuyuan ^{[1
]}

Yang, Tianjia ^{[1
]}

Zhao, Zihao ^{[1
]}

Xiao, Guanjun ^{[2
]}

Zou, Bo ^{[2
]}

Yuan, Wang Zhang ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Frontiers Sci Ctr Transformat Mol, Shanghai Key Lab Elect Insulat & Thermal Aging, Shanghai 200240, Peoples R China

[2] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China

来源：

SMALL | 2020年 / 16卷 / 49期

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

clustering‐ triggered emission; nonconventional luminophores; nontraditional intrinsic luminescence; persistent room temperature phosphorescence; through‐ space conjugation; ROOM-TEMPERATURE PHOSPHORESCENCE; CLUSTERING-TRIGGERED EMISSION; STRONG BLUE PHOTOLUMINESCENCE; AGGREGATION-INDUCED EMISSION; MOLECULAR-WEIGHT; FLUORESCENCE; DENDRIMERS; ANHYDRIDE; POLYMERS;

D O I：

10.1002/smll.202005035

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The rational modulation of the nontraditional intrinsic luminescence (NTIL) of nonconventional luminophores remains difficult, on account of the limited understanding on the structure-property relationships and emission mechanisms. Herein, the effective modulation of NTIL is demonstrated based on a group of nonaromatic anhydrides and imides. Mutual bridging of isolated subgroups effectively promotes intramolecular through-space conjugation (TSC), leading to red-shifted emission, enhanced efficiency, and prolonged persistent room-temperature phosphorescence (p-RTP). The substitution of heteroatoms from oxygen to nitrogen drastically changes the TSC and enhances intermolecular interactions, resulting in enhanced emission efficiency. In addition, upon freezing, compression, or embedding into polymer matrices, the emission intensity and color remain well regulated. These results shed new light on the rational modulation of the NTIL and p-RTP of nonconventional luminophores.

引用

页数：6

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