A comparative study of [Ag(PrS)(dppb)] and [AgS(BuS)(dppb)]: templating effect on structure and photoluminescence.

Dalton Trans

State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.

Published: August 2021

AI Article Synopsis

  • The study focuses on how adding a sulfido template to a specific silver cluster enhances its light-emitting properties.
  • This modification resulted in a new silver cluster with a longer wavelength emission (716 nm) compared to the original cluster (660 nm).
  • The changes in emission are attributed to alterations in the cluster's structural and electronic properties, especially the interactions between the sulfido template and the silver metal core.

Article Abstract

Atomically precise silver clusters with tunable photoluminescence (PL) properties have attracted extensive attention due to their great value for basic science and future applications. Here, we report that the addition of a sulfido template into a triangular thiolated silver cluster [Ag11(iPrS)9(dppb)3]·2CF3SO3·CH3OH (Ag11, dppb = 1,4-bis(diphenylphosphino)butane), which is emissive at 660 nm under ambient conditions, produced another silver cluster [S@Ag15(sBuS)12(dppb)3]·CF3SO3·H2O (Ag15) that displays 716 nm emission with a 56 nm redshift aided by the ligand sec-butyl mercaptan. The sulfido template, which affects the geometrical and electronic structures, results in a redshift of Ag11 room-temperature PL as a result of opening up the template-to-metal charge transfer (TMCT) and disturbing the electronic transition between the metal core and ligands at the periphery.

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Source
http://dx.doi.org/10.1039/d1dt01111aDOI Listing

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