Self-Assembly of Perovskite CsPbBr3Quantum Dots Driven by a Photo-Induced Alkynyl Homocoupling Reaction

被引：22

作者：

Li, Hongbo ^{[1
]}

Liu, Xiangdong ^{[1
]}

Ying, Qifei ^{[1
]}

Wang, Chao ^{[2
,3
]}

Jia, Wei ^{[4
]}

Xing, Xing ^{[2
,3
]}

Yin, Lisha ^{[1
]}

Lu, Zhenda ^{[2
,3
]}

Zhang, Kun ^{[1
]}

Pan, Yue ^{[1
]}

Shi, Zhan ^{[5
]}

Huang, Ling ^{[1
]}

Jia, Dianzeng ^{[4
]}

机构：

[1] Nanjing Tech Univ, Inst Adv Mat, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

[2] Nanjing Univ, Coll Engn & Appl Sci, State Key Lab Analyt Chem Life Sci, Nanjing 211816, Jiangsu, Peoples R China

[3] Nanjing Univ, Jiangsu Key Lab Artificial Funct Mat, Nanjing 211816, Jiangsu, Peoples R China

[4] Xinjiang Univ, Inst Appl Chem, Key Lab Adv Funct Mat, Lab Energy Mat Chem,Minist Educ, Urumqi 830046, Xinjiang, Peoples R China

[5] Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Jilin, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2020年 / 59卷 / 39期

基金：

美国国家科学基金会;

关键词：

alkynyl; homocoupling reactions; perovskites; self-assembly; UV-induced reactions; COLLOIDAL NANOCRYSTALS; HALIDE PEROVSKITES; LUMINESCENCE; DIMERIZATION; PASSIVATION; IMPACT; GROWTH;

D O I：

10.1002/anie.202004947

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Herein, we report the facile growth of three-dimensional CsPbBr(3)perovskite supercrystals (PSCs) self-assembled from individual CsPbBr(3)perovskite quantum dots (PQDs). By varying the carbon chain length of a surface-bound ligand molecule, 1-alkynyl acid, different morphologies of PSCs were obtained accompanied by an over 1000-fold photoluminescence improvement compared with that of PQDs. Systematic analyses have shown, for the first time, that under UV irradiation, CsBr, the byproduct formed during PQDs synthesis, could effectively catalyze the homocoupling reaction between two alkynyl groups, which further worked as a driving force to push forward the self-assembly of PQDs.

引用

页码：17207 / 17213

页数：7

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