RAY, A. K., NABOK, A. V., HASSAN, A. K., OMAR, O., TAYLOR, R. E. and COOK, M. J. (1998). An interpretation of the structure of Langmuir-Blodgett films of octa-substituted metal-free phthalocyanine molecules from optical spectra. Philosophical magazine. B, Physics of condensed matter, electronic, optical, and magnetic properties, 78 (1), 53-64.Full text not available from this repository.
Ultraviolet-visible absorption spectra of Langmuir-Blodgett (LB) films of octa-substituted metal-free phthalocyanine molecules are decomposed into Gaussian-Lorentzian components in order to compare the in-plane molecular arrangements of the two groups of the compounds with short and long alkyl chains. LB films of long-chain molecules represent the Davydov splitting of the Q band, which corresponds to the 'herringbone' molecular structure and the angle between the molecules is estimated to be 75 degrees. For short-chain molecules, the largely broadened 'blue' component of the Davydov doublets is suppressed and this can be explained by the domination of an anisotropic stack-like molecular arrangement in LB films.
|Research Institute, Centre or Group:||Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group|
|Depositing User:||Ann Betterton|
|Date Deposited:||30 Mar 2010 17:37|
|Last Modified:||30 Mar 2010 17:37|
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