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

Overview

Journal Nanomaterials (Basel)

Date 2020 Feb 9

PMID 32033058

Citations 33

Authors

Tai-Qun Yang

Bo Peng

Bing-Qian Shan

Yu-Xin Zong

Jin-Gang Jiang

Peng Wu

Kun Zhang

Affiliations

Soon will be listed here.

Abstract

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.

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