Comparison study of evaporated thiacalix[4]arene thin films on gold substrates as copper ion sensing

• Published in: Thin solid films Vol. 495; no. 1; pp. 368 - 371
• Main Authors: Ben Ali, M., Ben Chabanne, R., Vocanson, F., Dridi, C., Jaffrezic, N., Lamartine, R.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Lausanne Elsevier B.V 20-01-2006; Elsevier Science; Elsevier
• Subjects: Cross-disciplinary physics: materials science; rheology; Electric power; Engineering Sciences; Exact sciences and technology; Gold electrodes; Impedance spectroscopy; Ion sensor; Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Physics; Thiacalixarene; Vacuum deposition; Thiacalixarene; Impedance spectroscopy; Ion sensor; Gold electrodes; Ultrathin films; Nyquist diagrams; Calixarene; Crystal growth from vapors; Electrode material; Experimental study; Thin films; Quantity ratio; Sensors; Vacuum evaporation; Organic compounds; impedance spectroscopy; ion sensor; MEMBRANE; thiacalixarene; ELECTRODE; SENSOR; THIACALIXARENES; gold electrodes; BASE; WATER
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2005.08.238

Thin derivatives of thiacalix[4]arene film were deposited using the technique of thermal evaporation under vacuum to fabricate a copper chemical sensor. Impedance sepectroscopy measurements were made to study the sensitivity and selectivity of thiacalix[4]arene (TCA[4H])- and
p-tert-butyl thiacalix[4]arene (TCA[4+])-based sensors towards copper metal ions. The TCA[4H]/gold electrode device has shown a better limit of detection (10
−
8
M) and larger linear range (over three decades) of copper activity compared to the TCA[4+]/Au-based sensors.