Surface plasmon resonance on the LB monolayer of solvent-soluble silicon phthalocyanine

Qing Zhang, Bin He, Qing Dai, Jian hua Gu, Ning Gu, Deyin Huang

Research output: Contribution to journalConference articlepeer-review

10 Scopus citations


Thin films of bis-(p-chlorophenoxy) (tetra-4-nitrophthalocyaninato)silicon, TNPcSi(OPhCl-p)2, were prepared by using Langmuir-Blodgett techniques and the morphology of the film was investigated by AFM (atomic force microscope) analysis. It has been found that the LB films were successfully transferred onto substrates like mica, gold deposited glass, and pure glass with domains aggregated on the substrates. Surface plasmon resonance has been used to investigate the interaction between sulfur dioxide and a monolayer of TNPcSi(OPhCl-p)2 LB film. It has been found that the monolayer of LB film transferred onto gold deposited glass gave a 0.55° shift of resonant angle and an additional 0.45° shift of resonant angle after exposion in sulfur dioxide atomospheric ambient for twenty minute. The UV-visible absorption spectrum of the LB films of TNPcSi(OPhCl-p)2 showed that there is chemical changes in the film after the exposure to the sulfur dioxide ambient. This work has shown a promising application as an optical gas sensor.

Original languageEnglish (US)
Pages (from-to)631-634
Number of pages4
JournalSupramolecular Science
Issue number5-6
StatePublished - 1998
EventProceedings of the 7th International Conference on Molecular Electronics and Biocomputing - Nanjing, China
Duration: Nov 10 1997Nov 12 1997

ASJC Scopus subject areas

  • Engineering(all)


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