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Open AccessReview

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

Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
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Nanomaterials 2020, 10(2), 261; https://doi.org/10.3390/nano10020261
Received: 23 December 2019 / Revised: 26 January 2020 / Accepted: 29 January 2020 / Published: 4 February 2020
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. View Full-Text
Keywords: photoluminescence mechanism; metal nanoclusters; quantum confinement effect; ligand effect; p band intermediate state (PBIS); interface state; nanocatalysis photoluminescence mechanism; metal nanoclusters; quantum confinement effect; ligand effect; p band intermediate state (PBIS); interface state; nanocatalysis
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MDPI and ACS Style

Yang, T.-Q.; Peng, B.; Shan, B.-Q.; Zong, Y.-X.; Jiang, J.-G.; Wu, P.; Zhang, K. Origin of the Photoluminescence of Metal Nanoclusters: From Metal-Centered Emission to Ligand-Centered Emission. Nanomaterials 2020, 10, 261.

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