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Intrinsic photophysics of nitrophenolate ions studied by cryogenic ion spectroscopy

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Abstract

The intrinsic photophysics of nitrophenolate isomers (meta, para, and ortho) was studied at low temperature using photodissociation mass spectrometry in a cryogenic ion trap instrument. Each isomer has distinct photophysics that affects the excited state lifetimes, as observed experimentally in their spectroscopic linewidths. Visible-light-induced excitation of m-nitrophenolate gives rise to well-resolved vibronic features in the spectrum of the S1 state. The para and ortho isomers have broad spectra – even at cryogenic temperatures – due to their shorter excited state lifetimes and spectral congestion. We present computational evidence for mixing of the first and second excited states of o-nitrophenolate, leading to significant additional broadening in the experimental spectrum.

Graphical abstract: Intrinsic photophysics of nitrophenolate ions studied by cryogenic ion spectroscopy

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Publication details

The article was received on 27 Sep 2018, accepted on 30 Oct 2018 and first published on 30 Oct 2018


Article type: Paper
DOI: 10.1039/C8CP06078A
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
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    Intrinsic photophysics of nitrophenolate ions studied by cryogenic ion spectroscopy

    L. G. Dodson, W. Zagorec-Marks, S. Xu, J. E. T. Smith and J. M. Weber, Phys. Chem. Chem. Phys., 2018, Advance Article , DOI: 10.1039/C8CP06078A

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