Liquid crystalline phthalocyanine spun films for organic vapour sensing

Vapour sensing properties of spin-coated films of mesogenic octa-substituted phthalocyanine derivatives MPcR 8, where M = Ni(II), R = –S(CH 2) 11CH 3, –SCH(CH 2OC 12H 25) 2, –S(CH 2CH 2O) 3CH 3 were investigated using spectroscopic ellipsometry, Raman spectroscopy and surface plasmon resonance (SPR)...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2006-01, Vol.113 (1), p.127-134
Main Authors: Basova, T., Kol’tsov, E., Ray, A.K., Hassan, A.K., Gürek, A.G., Ahsen, V.
Format: Article
Language:English
Subjects:
Actuators
Derivatives
Detection
Ellipsometry
Hydrogen bonds
Mesogenic phthalocyanine
Plasmons
Raman spectra
Sensors
Solvents
Surface plasmon resonance
Vapour
Vapour sensitivity
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Summary:Vapour sensing properties of spin-coated films of mesogenic octa-substituted phthalocyanine derivatives MPcR 8, where M = Ni(II), R = –S(CH 2) 11CH 3, –SCH(CH 2OC 12H 25) 2, –S(CH 2CH 2O) 3CH 3 were investigated using spectroscopic ellipsometry, Raman spectroscopy and surface plasmon resonance (SPR) technique. Solvent molecules with saturated C C bonds such as chloroform are found to have formed hydrogen bonds with alkyl chains of the substituents of phthalocyanine molecules. The sensor response to aromatic compounds such as benzene is, on the other hand, believed to be the consequence of their π–π interaction with the conjugated phthalocyanine ring.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2005.02.038