The effect of deuterium on the photophysical properties of DNA-stabilized silver nanoclusters

Abstract

We investigated the effect of using D2O versus H2O as solvent on the spectroscopic properties of two NIR emissive DNA-stabilized silver nanoclusters (DNA–AgNCs). The two DNA–AgNCs were chosen because they emit in the same energy range as the third overtone of the O–H stretch. Opposite effects on the ns-lived decay were observed for the two DNA–AgNCs. Surprisingly, for one DNA–AgNC, D2O shortened the ns decay time and enhanced the amount of μs-lived emission. We hypothesize that the observed effects originate from the differences in the hydrogen bonding strength and vibrational frequencies in the two diverse solvents. For the other DNA–AgNC, D2O lengthened the ns decay time and made the fluorescence quantum yield approach unity at 5 °C.

Graphical abstract: The effect of deuterium on the photophysical properties of DNA-stabilized silver nanoclusters

Supplementary files

Article information

Article type
Edge Article
Submitted
14 Sep 2021
Accepted
25 Nov 2021
First published
25 Nov 2021
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2021, Advance Article

The effect of deuterium on the photophysical properties of DNA-stabilized silver nanoclusters

C. Cerretani, G. Palm-Henriksen, M. B. Liisberg and T. Vosch, Chem. Sci., 2021, Advance Article , DOI: 10.1039/D1SC05079F

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