Deuteration of heptamethine cyanine dyes enhances their emission efficacy

Literature Information

Publication Date 2023-12-18
DOI 10.1039/D3CC05153F
Impact Factor 6.222
Authors

Hana Janeková, Hannah C. Friedman, Marina Russo, Mergime Zyberaj, Tasnim Ahmed, Ash Sueh Hua, Anthony V. Sica, Justin R. Caram, Peter Štacko


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Abstract

The design of bright short-wave infrared fluorophores remains a grand challenge. Here we investigate the impact of deuteration on the properties in a series of heptamethine dyes, the absorption of which spans near-infrared and SWIR regions. We demonstrate that it is a generally applicable strategy that leads to enhanced quantum yields of fluorescence, longer-lived singlet excited states and suppressed rates of non-radiative deactivation processes.

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