SABER UCV >
1) Investigación >
Artículos Publicados >

Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/123456789/9849

Título : Phase transitions in Langmuir monolayer of long chain attached fluorescein studied by second harmonic generation technique
Autor : Gutiérrez, Héctor
Echevarria, Lorenzo
Caetano, Manuel
Fecha de publicación : 12-Jun-2015
Resumen : Optical second harmonic generation (SHG) measurements coupled with -A isotherms have been shown to be helpful, for the following and comprehension of orientational orders and phase transitions in Langmuir monolayers. Using the SHG-( -A) measurements, monolayers of 5-hexadecanoylaminofluorescein on the water surface were examined by monolayer compression. The phase transitions were noticeably revealed. Dependence of the square root of the intensities polarizations quotient in the molecules surface density, allowed establishing tilting orientation alignment phases. In addition, change in the monolayer symmetry C∞v → C2v as it goes through the LE–LC phase transition, was clearly recognized. It was concluded that a possible change in ˇ is taking place due to aggregate formation.
URI : http://saber.ucv.ve/jspui/handle/123456789/9849
ISSN : 09277757
Aparece en las colecciones: Artículos Publicados

Ficheros en este ítem:

Fichero Descripción Tamaño Formato
Gutie_rrez-2009-Colloids and Surfaces A_ Physic.pdf669.09 kBAdobe PDFVisualizar/Abrir

Los ítems de DSpace están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2008 MIT and Hewlett-Packard - Comentarios