Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/5141
Title: Photophysics of 3-hydroxyflavone in supercritical CO2: a probe to study the microenvironment of SCF
Authors: Chattopadhyay, Nitin 
Barroso, Mónica 
Serpa, Carlos 
Isilda Silva, M. 
Arnaut, Luís G. 
Formosinho, Sebastião J. 
Issue Date: 2004
Citation: Chemical Physics Letters. 387:4-6 (2004) 263-266
Abstract: The excitation of 3-hydroxyflavone (3HF) to its second excited singlet state (S2) gives rise to dual fluorescence in supercritical carbon dioxide. The ultraviolet fluorescence originated from the S2 state of 3HF is well separated from the green emission emanating from the tautomeric form, produced via the excited state intramolecular proton transfer. The relative intensity of the S2 to the tautomer fluorescence (S2/T) has been studied as a function of pressure and temperature. It is shown that this ratio reflects the microheterogeneity of the supercritical CO2, and confirms the value of fluorometric probes in disclosing the microscopic properties of supercritical fluids.
URI: http://hdl.handle.net/10316/5141
DOI: 10.1016/j.cplett.2004.01.122
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
filee2e674efa11f4f4794d842cafcaa4c40.pdf164.82 kBAdobe PDFView/Open
Show full item record

WEB OF SCIENCETM
Citations

11
checked on Sep 2, 2021

Page view(s)

352
checked on Sep 16, 2021

Download(s) 50

322
checked on Sep 16, 2021

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.