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Triggering near-infrared luminescence of vanadyl phthalocyanine by charging.

ABSTRACT: Probing electrofluorochromism (EFC) at the molecular level remains challenging. Here we study the strongly charge state-dependent photoluminescence of vanadyl phthalocyanine. We report vibrationally resolved absorption and laser-induced fluorescence (LIF) spectra of samples comprising both the mass-selected neutral molecule (VOPc⋅, a stable radical) and its cation produced upon electron ionization (EI) isolated in 5 K neon matrices. Ionization of the essentially non-emissive VOPc⋅ forms a high-spin diradical cation (VOPc^+.. ) which shows profound photoluminescence (PL) in the NIR range. This unique phenomenon is potentially of interest for NIR-emitting electro-optic devices.

SUBMITTER: Debnath S

PROVIDER: S-EPMC9322020 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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Triggering near-infrared luminescence of vanadyl phthalocyanine by charging.

Debnath Sreekanta S Haupa Karolina A KA Lebedkin Sergei S Strelnikov Dmitry D Kappes Manfred M MM

Angewandte Chemie (International ed. in English) 20220421 25

Probing electrofluorochromism (EFC) at the molecular level remains challenging. Here we study the strongly charge state-dependent photoluminescence of vanadyl phthalocyanine. We report vibrationally resolved absorption and laser-induced fluorescence (LIF) spectra of samples comprising both the mass-selected neutral molecule (VOPc⋅, a stable radical) and its cation produced upon electron ionization (EI) isolated in 5 K neon matrices. Ionization of the essentially non-emissive VOPc⋅ forms a high-s ...[more]

PMID: 35349208

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