Table of Contents
Laser Chemistry
Volume 17, Issue 4, Pages 175-184

Hydrophobicity of Water at the Surface as Studied by laser-Induced Fluorescence Microscopy

1SEDC Laboratory of Analytical Sciences, Department of Chemistry, Xiamen University, Xiamen 361005, China
2Department of Molecular cience and Technology, Kyushu University, Kasuga-shi, Fukuoka 816, Japan

Received 19 July 1997

Copyright © 1998 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A sensitive comparative fluorescence microscopic approach was developed and used to study the water at the air-water interface region. An insoluble chromophore mesoc-α,β,γ,δ-tetraphenylporphine (TPP) was spread on the water. Its fluorescence spectrum indicated that the spectrum of TPP on the water surface was similar to those measured in nonpolar hydrocarbon solvents. Thus, the water at the surface was concluded to be hydrophobic and less polar than the water in the bulk.