Langmiur-Blodgett studies of silicon(IV) phthalocyanine bis(trihexylsilyoxide) and its optical properties

Fernandes, A. N., Richardson, T. H., Lacey, D. and Hayley, J. (2009) Langmiur-Blodgett studies of silicon(IV) phthalocyanine bis(trihexylsilyoxide) and its optical properties. Dyes and Pigments, 80(1), pp. 141-148. (doi: 10.1016/j.dyepig.2008.06.004)

Abstract

Although much solution-based research has been carried out on silicon phthalacyanines, little work has been done on Si Pc LB films. In order to attempt studies on thin films, ultrathin Langmuir-Blodgett films of silicon(IV) phthalocyanine bis(trihexylsilyoxide), C68H94N8O2Si3 have been studied and characterised. Whilst silicon(IV) phthalocyanine bis(trihexylsilyoxide) is not a traditional LB film forming material, it can be made conducive to deposition by mixing with ideal film forming materials such as calixarenes. Surface pressure-area isotherms revealed an area per molecule of around 7.5 A(2) which indicates that the silicon(IV) phthalocyanine bis(trihexylsilyoxide) forms multi-lamella stacks. Thermal optical polarised spectroscopy revealed the formation of brightly coloured mesophases in films. DSC showed the presence of an irreversible A phase and a reversible T phase. Crown Copyright . All rights reserved.

• Item Type: Articles
• Keywords: CROWN DELAYED FLUORESCENCE DERIVATIVES DSC FILMS GAS/SOLID INTERFACES Isotherms LANGMUIR-BLODGETT LB film Mesophase MOLECULE PHASE PHOTODYNAMIC ACTIVITIES PHOTOPHYSICAL PROPERTIES Phthalocyanine dye SINGLET OXYGEN SPECTROSCOPY SUBSTITUENTS SURFACE TETRAPHENYLPORPHYRIN THIN-FILMS
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Fernandes, Ms Anwesha
• Authors: Fernandes, A. N., Richardson, T. H., Lacey, D., and Hayley, J.
• College/School: College of Science and Engineering > School of Chemistry
• Journal Name: Dyes and Pigments
• ISSN: 0143-7208