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Instrumentation for Steady-State and Dynamic Fluorescence and Absorbance Studies in Supercritical Media

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We describe and characterize a new instrument for the measurement of: (1) steady-state excitation, emission, and absorbance spectra; (2) fluorescence lifetimes; and (3) phase-resolved fluorescence spectra in supercritical fluid media. Time resolution is on the order 10-20 ps, spectral resolution is 1 nm from 225-700 nm, and pressure and temperature can be controlled accurately and safely from 1 to 300 ± 0.7 atm and 273.2 to 373.2 ± 0.1 K, respectively. The instrument shows great promise for the elucidation of complex solvation processes occurring in supercritical fluid media.

Keywords: Fluorescence; Instrumentation; Supercritical fluids; Transient solvation

Document Type: Research Article


Affiliations: Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14214

Publication date: August 1, 1990

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