TY - JOUR AU - Leah Dodson AU - Wyatt Zagorec-Marks AU - Shuang Xu AU - James Smith AU - J. Mathias Weber AB - 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.

BT - Physical Chemistry Chemical Physics DA - 2018-10 DO - 10.1039/C8CP06078A N2 - 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.

PY - 2018 SP - 28535 EP - 28543 T2 - Physical Chemistry Chemical Physics TI - Intrinsic photophysics of nitrophenolate ions studied by cryogenic ion spectroscopy UR - https://pubs.rsc.org/en/content/articlehtml/2018/cp/c8cp06078a VL - 20 ER -