Self-assembled monolayer of copper(II) meso-tetra(4-sulfanatophenyl) porphyrin as an optical gas sensor

Ali Umar Akrajas, Muhamad Mat Salleh, Muhammad Yahaya

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

This paper reports the use of an optical sensing technique to develop a receptor for organic gases by using the assembled monolayer of Cu(II) meso-tetra(4-sulfanatophenyl) porphyrin (CuMTSP). The monolayer was deposited on a quartz substrate by immersing the substrate into its aqueous solution for 30min at 5°C. The thin film was used to detect the saturated vapor of ethanol, 2-propanol and cyclohexane in airflow of 15l/min. The sensing sensitivity was based on the changes in optical absorption at 514nm of the self-assembled monolayer (SAM) upon exposure to gas samples. It was found that the thin film exhibited a good sensitivity and reproducibility towards all vapor samples.

Original languageEnglish
Pages (from-to)231-235
Number of pages5
JournalSensors and Actuators, B: Chemical
Volume101
Issue number1-2
DOIs
Publication statusPublished - 15 Jun 2004

Fingerprint

Porphyrins
Optical sensors
Self assembled monolayers
Chemical sensors
porphyrins
Copper
Monolayers
Gases
Vapors
vapors
Thin films
copper
Quartz
2-Propanol
sensitivity
sensors
Propanol
Substrates
Cyclohexane
thin films

Keywords

  • Gas sensors
  • Metalloporphyrin
  • Optical sensing
  • SAM

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Cite this

Self-assembled monolayer of copper(II) meso-tetra(4-sulfanatophenyl) porphyrin as an optical gas sensor. / Akrajas, Ali Umar; Mat Salleh, Muhamad; Yahaya, Muhammad.

In: Sensors and Actuators, B: Chemical, Vol. 101, No. 1-2, 15.06.2004, p. 231-235.

Research output: Contribution to journalArticle

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