Circularly Polarized Luminescence based on 0D Lead‐Free Antimony (III) Halide Hybrids. Issue 16 (3rd June 2022)

• Record Type: Journal Article
• Authors: Xuan, Hong‐Li; Li, Jin‐Long; Xu, Liang‐Jin; Zheng, Da‐Sheng; Chen, Zhong‐Ning
• Is Part Of: Advanced optical materials. Volume 10:Issue 16(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-06-03
• Subjects: antimony (III) -- circular dichroism -- circularly polarized luminescence -- lead‐free hybrids -- self‐trapped exciton emission; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.202200591
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: Chiral materials with circularly polarized luminescence (CPL) are currently attracting great attention for their wide applications in bioresponsive imaging, 3D displays, and storage of information. Herein, CPL‐active enantiomorphic hybrids (R)‐ and (S)‐C6 H15 Cl2 NO⋅SbCl5 are obtained by self‐assembling chiral R/S‐(3‐chloro‐2‐hydroxypropyl)trimethylammonium chloride with antimony(III) chloride, giving a 0D structure with SbCl5 pyramids isolated by (3‐chloro‐2‐hydroxypropyl)trimethylammonium chloride cations. The formed enantiomers exhibit brilliant orange emission peaked at 604 nm with photoluminescence quantum yield as high as 71.2%, originating from the self‐trapped exciton emission demonstrated by photophysical characterization. Due to the existence of chiral organic cations, the enantiomers exhibit strong chiral‐optical properties with mirror‐image circular dichroism signals in ground state and obvious CPL activity with the dissymmetry factor g lum of 2.5 × 10 −4 and −1.6 × 10 −4 for R‐type and S‐type, respectively. It should be mentioned that these are the first reported 0D hybrids with CPL‐activity. This work paves an avenue for developing eco‐friendly CPL materials with highly ‐efficient luminescence. Abstract : Circularly polarized luminescence (CPL)‐sensitive enantiomorphic hybrids (R)‐ and (S)‐C6 H15 Cl2 NO⋅SbCl5 are successfully prepared with brilliant orange emission peaked at 604 nm with photoluminescence quantum yield as high as 71.2%, caused by self‐trapped exciton emission of Sb 3+ . CPL activity with the dissymmetry factor g lum of 2.5 × 10 −4 and −1.6 × 10 −4 is achieved for R‐type and S‐type, respectively.