Stepwise Achievement of Circularly Polarized Luminescence on Atomically Precise Silver Clusters

Advanced Science

Xin‐Lei Li¹  Si Li¹  Yu‐Jin Kong¹  Shuang‐Quan Zang¹  Hai‐Yang Li¹  Guang‐Gang Gao²  Zhi‐Ping Yan³  You‐Xuan Zheng³ 

[1] Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou 450001 China;School of Materials Science and Engineering University of Jinan Jinan 250022 China;State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China;

关键词: chirality;    circularly polarized luminescence;    postmodification;    precise silver clusters;    silver (I) clusters;   

DOI  :  10.1002/advs.202000738

来源: DOAJ

【 摘 要 】

Abstract The weakly coordinated anionic nitrate ligands in a centrosymmetric Ag20 cluster are replaced in a stepwise manner by chiral amino acids and two achiral luminescent sulfonic‐group‐containing ligands while nearly maintaining the original silver(I) cage structure. This surface engineering enables the atomically precise Ag20 clusters to exhibit the high‐efficiency synergetic effects of chirality and fluorescence, producing rare circularly polarized luminescence among the metal clusters with a large dissymmetry factor of (|glum|) ≈ 5 × 10−3. This rational approach using joint functional ligands further opens a new avenue to diverse multifunctional metal clusters for promising applications.

【 授权许可】

Unknown