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

被引：146
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
收藏
页码：3290 / 3295
页数：11
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