On photo-oxidation of single molecules
Source abstract
Abstract
Abstract Fluorescence and fluorescence excitation spectra of terrylene in 9,10-dibromoanthracene matrix were studied at 5 K. Characteristic singlet oxygen phosphorescence, O 2 ( 1 Δ g ) → O 2 ( 3 Σ g ) with the line maximum at 1272.5 nm, was observed after excitation of terrylene molecules embedded into one of its two sites. It indicates that singlet oxygen, precursor in photo-oxidation of aromatic molecules, can be created only for those oxygen molecules which can form weak van der Waals complex with terrylene. According to quantum-chemical calculations terrylene and oxygen can form complex with the bonding energy 141 cm −1 , in which oxygen molecule is located along the long axis of terrylene, ∼0.3 nm apart, with the molecular axis inclined by 110°.
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Research context
OpenAlex topics: Photochemistry and Electron Transfer Studies · Spectroscopy and Quantum Chemical Studies · Spectroscopy and Laser Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (28)
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