Issue 1, 1991
From the journal:

Journal of Materials Chemistry

Spectroscopic and X-ray diffraction study of Langmuir–Blodgett films of some 1,4,8,11,15,18-hexaalkyl-22,25-bis(carboxypropyl)phthalocyanines

Michael J. Cook,   Neil B. McKeown,   John M. Simmons,   Andrew J. Thomson,   Mervyn F. Daniel,   Kenneth J. Harrison,   Robert M. Richardson  and  Stephen J. Roser  

Abstract

Molecular assemblies within Langmuir–Blodgett (LB) films of 1,4,8,11,15,18-hexaoctyl-22,25-bis(carboxypropyl)phthalocyanine (1a) copper 1,4,8,11,15,18-hexanonyl-22,25-bis(carboxypropyl)phthalocyaninate (1b) and 1,4,8,11,15,18-hexadecyl-22,25-bis(carboxypropyl)phthalocyanine (1c) have been examined using X-ray diffraction, RAIRS and polarised optical spectroscopy. The LB films are constructed as bilayers by Y-type deposition and the resulting assemblies give rise to visible-region absorption spectra closely similar to those of crystallised films of octaalkylphthalocyanines. When heated, the molecular assemblies within the LB films of 1a and 1b reorganise irreversibly to a form in which the bilayer spacing is reduced. The transition from one type of packing to another is sharp for the film of 1a but occurs over a wide temperature range for the film of 1b. Heating the film of 1c to 140 °C modifies the packing but in this case a further modification occurs on cooling.

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Article information

DOI
https://doi.org/10.1039/JM9910100121
Article type
Paper

J. Mater. Chem., 1991,1, 121-127

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Spectroscopic and X-ray diffraction study of Langmuir–Blodgett films of some 1,4,8,11,15,18-hexaalkyl-22,25-bis(carboxypropyl)phthalocyanines

M. J. Cook, N. B. McKeown, J. M. Simmons, A. J. Thomson, M. F. Daniel, K. J. Harrison, R. M. Richardson and S. J. Roser, J. Mater. Chem., 1991, 1, 121 DOI: 10.1039/JM9910100121

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