Origin of the Photoluminescence of Metal Nanoclusters: From Metal-Centered Emission to Ligand-Centered Emission

Nanomaterials

Yu-Xin Zong¹  Tai-Qun Yang¹  Bing-Qian Shan¹  Peng Wu¹  Jin-Gang Jiang¹  Kun Zhang¹  Bo Peng¹ 

[1] Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China;

关键词: photoluminescence mechanism;    metal nanoclusters;    quantum confinement effect;    ligand effect;    p band intermediate state (pbis);    interface state;    nanocatalysis;   

DOI  :  10.3390/nano10020261

来源: DOAJ

【 摘 要 】

Recently, metal nanoclusters (MNCs) emerged as a new class of luminescent materials and have attracted tremendous interest in the area of luminescence-related applications due to their excellent luminous properties (good photostability, large Stokes shift) and inherent good biocompatibility. However, the origin of photoluminescence (PL) of MNCs is still not fully understood, which has limited their practical application. In this mini-review, focusing on the origin of the photoemission emission of MNCs, we simply review the evolution of luminescent mechanism models of MNCs, from the pure metal-centered quantum confinement mechanics to ligand-centered p band intermediate state (PBIS) model via a transitional ligand-to-metal charge transfer (LMCT or LMMCT) mechanism as a compromise model.

【 授权许可】

Unknown