Mixed thin films of a cationic amphiphilic porphyrin and n-alkanes.
Langmuir and Langmuir-Blodgett (LB) films of a cationic amphiphilic porphyrin mixed with n-alkanes octadecane and hexatriacontane were prepared and characterized, to examine the influence of the alkanes on film structure and stability. While the structure present in these films was controlled primarily by the porphyrin, the addition of the alkanes resulted in significant changes to both the phase behavior of the Langmuir films and the molecular arrangement of the LB films. These changes, as well as the observed chain length effects, are explained in terms of the intermolecular interactions present in the films.
O'Driscoll
Benjamin M D
BM
Department of Chemistry, The University of Queensland, Brisbane, Queensland 4072, Australia.
Ruggles
Jeremy L
JL
Gentle
Ian R
IR