Please use this identifier to cite or link to this item:
https://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: | https://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 | Size | Format | |
---|---|---|---|---|
filee2e674efa11f4f4794d842cafcaa4c40.pdf | 164.82 kB | Adobe PDF | View/Open |
SCOPUSTM
Citations
12
checked on Oct 14, 2024
WEB OF SCIENCETM
Citations
11
checked on Oct 2, 2024
Page view(s) 50
502
checked on Oct 15, 2024
Download(s) 50
457
checked on Oct 15, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.