Abstract

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.

Time-resolved optical probing of the non-equilibrium supercritical state in molecular media under ns laser-plasma impact

Evgenii Mareev, Nikita Minaev, Evgenii Epifanov, Ivan Tsymbalov, Alexander Sviridov, and Vyacheslav Gordienko
Opt. Express 29(21) 33592-33601 (2021)

Dynamic light-scattering study of self-assembly of diblock copolymers in supercritical carbon dioxide

Tadanori Koga, Shuiqin Zhou, and Benjamin Chu
Appl. Opt. 40(24) 4170-4178 (2001)

Supercritical angle fluorescence (SAF) microscopy

Thomas Ruckstuhl and Dorinel Verdes
Opt. Express 12(18) 4246-4254 (2004)

Laser-induced fluorescence thermometry of supercritical CO₂ flows inside a micro-channel

Suhyeon Park, Anatoly Parahovnik, Yoav Peles, and Subith S. Vasu
Opt. Lett. 46(8) 1924-1927 (2021)

Steady-state directional diffuse reflectance and fluorescence of human skin

Kamal M. Katika and Laurent Pilon
Appl. Opt. 45(17) 4174-4183 (2006)