Marcelo H. Gehlen
University of São Paulo
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Featured researches published by Marcelo H. Gehlen.
Pure and Applied Chemistry | 1995
F. C. De Schryver; N. Boens; L. Viaene; S. Reekmans; Bart Hermans; J. van Stam; Marcelo H. Gehlen; Hugo Berghmans; Marcel Ameloot
The use of fluorescence spectroscopy in the study of associative phenomena is illustrated . The use of standard global of and global compartmental analysis in a number of complex systems is clearly shown. Association between detergent molecules and between detergents and polymers was analysed and the different parameters characterising such an interaction evaluated. Associative phenomena in covalent polymers such as dipole-dipole interactions in halato-telechelic polymers and in syndiotactic polymethylmethacrylate were investigated. The rate constants of inter and intramolecular interactions in halato-telechelic polymer were determined through a systematic analysis of the different interactions using global tricompartmental analysis of fluorescence decays combined with a scanning technique to estimate the rate constants. Fluorescence polarization and changes in fluorescence decay times in the temperature range of gelation reveal a stepwise mechanism in the gelation of s-PMMA.
Chemical Reviews | 1993
Marcelo H. Gehlen; Frans C. De Schryver
The Journal of Physical Chemistry | 1993
Marcelo H. Gehlen; Frans C. De Schryver
Langmuir | 1993
S. Reekmans; D Bernik; Marcelo H. Gehlen; J Vanstam; Mark Van der Auweraer; Fc Deschryver
The Journal of Physical Chemistry | 1991
Marcelo H. Gehlen; S. Reekmans; M. G. Neumann; F. C. De Schyrver
The Journal of Physical Chemistry | 1992
Marcelo H. Gehlen; N. Boens; F. C. De Schryver; S. Reekmans
The Journal of Physical Chemistry | 1995
Marcelo H. Gehlen; F. C. De Schryver; G. Bhaskar Dutt; J. van Stam; N. Boens
Macromolecules | 1993
S. Reekmans; Marcelo H. Gehlen; Fc Deschryver; Noël Boens; Mark Van der Auweraer
The Journal of Physical Chemistry | 1995
Marcelo H. Gehlen
Microchemistry#R##N#Spectroscopy and Chemistry in Small Domains | 1994
F. C. De Schryver; Jan van Stam; Marcelo H. Gehlen; N. Boens; S. Reekmans; Rm Negri; Nadine Wittouck; D Bernik; Marcel Ameloot; Herman Faes; Dimitri Noukakis