Two-Photon Absorption-Based Upconverted Circularly Polarized Luminescence Generated in Chiral Perovskite Nanocrystals

被引：157

作者：

Chen, Wenjie ^{[1
,2
,4
]}

Zhang, Shuai ^{[3
,4
]}

Zhou, Minghao ^{[2
]}

Zhao, Tonghan ^{[2
,4
]}

Qin, Xujin ^{[2
]}

Liu, Xinfeng ^{[3
,4
]}

Liu, Minghua ^{[1
,2
,4
]}

Duan, Pengfei ^{[2
,4
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Colloid Interface & Chem Thermodynam, Inst Chem, 2 ZhongGuanCun BeiYiJie, Beijing 100190, Peoples R China

[2] Natl Ctr Nanosci & Technol NCNST, CAS Ctr Excellence Nanosci, CAS Key Lab Nanosyst & Hierarch Fabricat, 11 ZhongGuanCun BeiYiTiao, Beijing 100190, Peoples R China

[3] Natl Ctr Nanosci & Technol NCNST, CAS Ctr Excellence Nanosci, CAS Key Lab Standardizat & Measurement Nanotechno, 11 ZhongGuanCun BeiYiTiao, Beijing 100190, Peoples R China

[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2019年 / 10卷 / 12期

基金：

中国国家自然科学基金;

关键词：

QUANTUM DOTS; EMISSION; COLOR;

D O I：

10.1021/acs.jpclett.9b01224

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：

Upconverted circularly polarized luminescence (UCPL) processes have attracted great interest, because the chiroptical properties could be expressed in different photophysical processes. In this Letter, the first example of two-photon absorption-based upconverted circularly polarized luminescence (TP-UCPL) is demonstrated. The chiral alpha-octylamine-modified cesium lead bromides perovskite nanocrystals exhibited TP-UCPL with a two-photon absorption cross section at 800 nm (sigma(2,800 nm)) up to 3.68 x 10(4) GM and luminescence dissymmetric factor (g(lum)) up to 7.0 x 10(-3). Depending on the molecular chirality of the capping ligands, the TP-UCPL sense can be selected and the mirror-imaged CPL is obtained. It is envisaged that this approach will afford a new viewpoint for designing UCPL processes.

引用

页码：3290 / 3295

页数：11

共 43 条

[1] Two-Photon-Induced Blue Shift of Core and Shell Optical Transitions in Colloidal CdSe/CdS Quasi-Type II Quantum Rods [J].