Silver in the Center Enhances Room-Temperature Phosphorescence of a Platinum Sub-nanocluster by 18 Times.

Angewandte Chemie
Yuki AkanumaKimihisa Yamamoto

Abstract

There has been controversy surrounding the roles of the metal core (metal-metal interaction) and the shell (metal-ligand interaction) in photoluminescence of ligand-protected metal nanoclusters. We have discovered aggregation-induced room-temperature phosphorescence of a platinum-thiolate complex and its silver ion inclusion complex (a silver-doped platinum sub-nanocluster). The inclusion of silver ion boosted the photoluminescent quantum yield by 18 times. Photophysical measurements indicate that the rate of nonradiative decay was slower for the silver-doped platinum sub-nanocluster. DFT calculations showed that the LUMO, which had the main contribution from Ag s-orbital and Pt d-orbitals, played a critical role in suppressing the structural distortion at the excited state. This work will hopefully stimulate more research on designing strategies based on molecular orbitals of atomicity-precise luminescent multimetallic nanoclusters.

References

Aug 5, 2004·Journal of the American Chemical Society·Quan-Ming WangRichard Eisenberg
Jun 17, 2010·Nano Letters·Zhikun Wu, Rongchao Jin
Jan 7, 2014·Journal of the American Chemical Society·Yong YuJianping Xie
Jul 12, 2014·Chemical Communications : Chem Comm·Xiaofang JiaErkang Wang
Jun 11, 2015·Journal of the American Chemical Society·Kyunglim PyoDongil Lee
Sep 24, 2015·Journal of the American Chemical Society·Zhennan WuBai Yang
Nov 28, 2015·Angewandte Chemie·Megalamane S BootharajuOsman M Bakr
Feb 26, 2016·The Journal of Physical Chemistry Letters·Nirmal GoswamiJianping Xie
Sep 28, 2017·Nature Communications·Takane ImaokaKimihisa Yamamoto
Sep 28, 2018·Nanoscale Research Letters·Navdeep KaurTsung-Rong Kuo
Nov 20, 2018·Accounts of Chemical Research·Atanu GhoshOsman M Bakr
Dec 18, 2018·Journal of the American Chemical Society·Yiyang LinMolly M Stevens
Oct 21, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Sebastián A DíazEunkeu Oh

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