Strong Magneto-chiroptical Effects through Introducing Chiral Transition-metal Complex Cations to Lead Halide

Guankui Long; Haolin Lu; Fenglian Qi; Hebin Wang; Tengfei He; Bing Sun; Xiaoqing Gao; Andrew H Comstock; Sehrish Gull; Yunxin Zhang; Tianjiao Qiao; Tianyin Shao; You-Xuan Zheng; Dali Sun; Yongsheng Chen; Hao-Li Zhang; Zhiyong Tang

doi:10.1002/anie.202415363

Strong Magneto-chiroptical Effects through Introducing Chiral Transition-metal Complex Cations to Lead Halide

Angew Chem Int Ed Engl. 2024 Dec 4:e202415363. doi: 10.1002/anie.202415363. Online ahead of print.

Authors

Guankui Long¹, Haolin Lu², Fenglian Qi³, Hebin Wang², Tengfei He⁴, Bing Sun⁵, Xiaoqing Gao⁶, Andrew H Comstock⁷, Sehrish Gull², Yunxin Zhang², Tianjiao Qiao², Tianyin Shao², You-Xuan Zheng⁸, Dali Sun⁷, Yongsheng Chen⁴, Hao-Li Zhang⁵, Zhiyong Tang³

Affiliations

¹ Nankai University, School of Materials Science and Engineering, No.38 Tongyan Road, Jinnan District, 300350, Tianjin, CHINA.
² Nankai University, School of Materials Science and Engineering, 300350, Tianjin, CHINA.
³ National Center for Nanoscience and Technology, Chinese Academy of Science (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in Nanoscience, 100190, Beijing, CHINA.
⁴ Nankai University, The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, 300350, Tianjin, CHINA.
⁵ Lanzhou University, State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design (MOE), College of Chemistry and Chemical Engineering, 730000, Lanzhou, CHINA.
⁶ University of the Chinese Academy of Sciences Wenzhou Institute, Wenzhou Institute, 325000, Wenzhou, CHINA.
⁷ North Carolina State University, Department of Physics, NC 27695-8202, Raleigh, UNITED STATES OF AMERICA.
⁸ Nanjing University, State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, 210023, Nanjing, CHINA.

PMID: 39630104
DOI: 10.1002/anie.202415363

Abstract

The interplay between chirality with magnetism can break both the space and time inversion symmetry and have wide applications in information storage, photodetectors, multiferroics and spintronics. Herein, we report the chiral transition-metal complex cation-based lead halide, R-CDPB and S-CDPB. In contrast with the traditional chiral metal halides with organic cations, a novel strategy for chirality transfer from the transition-metal complex cation to the lead halide framework is developed. The chiral complex cations directly participate the band structure and introduce the d-d transitions and tunable magneto-chiroptical effects in both the ultraviolet and full visible range into R-CDPB and S-CDPB. Most importantly, the coupling between magnetic moment of the complex cation and chiroptical properties is confirmed by the magneto-chiral dichroism. For the band-edge transition, the unprecedented modulation of +514% for S-CDPB and -474% for R-CDPB was achieved at -1.3 Tesla. Our findings demonstrate a novel strategy to combine chirality with magnetic moment, and provide a versatile material platform towards magneto-chiroptical and chiro-spintronic applications.

Keywords: A-site engineering; chiral lead halide; chiroptical effect; complex ions; magneto-chiral dichroism.