Dual emitting Ag35 nanocluster protected by 2-pyrene imine thiol

Arijit Jana; Papri Chakraborty; Wakeel Ahmed Dar; Sourov Chandra; Esma Khatun; M. P. Kannan; Robin H. A. Ras; Thalappil Pradeep

doi:10.1039/D0CC03983G

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Dual emitting Ag₃₅ nanocluster protected by 2-pyrene imine thiol†

Arijit Jana,

^ab Papri Chakraborty,

^a Wakeel Ahmed Dar,^a Sourov Chandra,

^b Esma Khatun,

^a M. P. Kannan,

^a Robin H. A. Ras

^bc and Thalappil Pradeep

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology Madras, Chennai 600036, India
E-mail: pradeep@iitm.ac.in

^b Department of Applied Physics, Aalto University, School of Science, Puumiehenkuja 2, Espoo, Finland

^c Department of Bioproducts and Biosystems, Aalto University School of Chemical Engineering, Espoo, Finland

Abstract

In this communication, we present the synthesis of 2-pyrene imine thiol (2-PIT)-protected Ag₃₅ nanoclusters using a ligand exchange-induced structural transformation reaction. The formation of the nanocluster and its composition were confirmed through several spectroscopic and electron microscopic studies. The UV-vis absorption spectrum showed a set of characteristic features of the nanocluster. This nanocluster showed blue emission under UV light due to pyrene to metal core charge-transfer, and NIR emission due to charge-transfer within the metal core. This is the first report on dual emitting pyrene protected atomically precise silver nanoclusters.

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Article information

DOI: https://doi.org/10.1039/D0CC03983G
Article type: Communication
Submitted: 07 Jun 2020
Accepted: 02 Sep 2020
First published: 02 Sep 2020

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Chem. Commun., 2020,56, 12550-12553

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Dual emitting Ag₃₅ nanocluster protected by 2-pyrene imine thiol

A. Jana, P. Chakraborty, W. A. Dar, S. Chandra, E. Khatun, M. P. Kannan, R. H. A. Ras and T. Pradeep, Chem. Commun., 2020, 56, 12550 DOI: 10.1039/D0CC03983G

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