Ethanol sensing property of novel phthalocyanines substituted with 3,4-dihydroxy-3-cyclobuten-1,2-dione

Ayşegül Yazici, Nida Dalbul, Ahmet Altindal, Bekir Salih, Özer Bekaroǧlu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


The novel mono metallo [Zn(II) 2a and Co(II) 2b] phthalocyanines have been synthesized from compound 1, which can be obtained by the reaction of 4-nitrophthalonitrile with 3,4-dihydroxy-3-cyclobuten-1,2-dione. The novel mono phthalocyanines with cyclobuten unit have been characterized by elemental analysis, UV-vis, FT-IR, 1H NMR, and mass spectroscopy. The effect of humidity on the ethanol sensing capability of the spin coated lilms 2a and 2b has been studied. The results showed that the presence of humidity, acting as interference gas, reduces both sensitivity and response time of the sensors. In addition, studies on response time and repeatability of the sensors have also been carried out. Applications of Elovich and Ritchie kinetic models to adsorption systems were reviewed. Results show that while the Ritchie equation may be applied for low temperature adsorption processes, while Elovich equation generates a straight line that best fit to the data of adsorption of ethanol vapors on Pc films at higher temperature.

Original languageEnglish
Pages (from-to)14-22
Number of pages9
JournalSensors and Actuators, B: Chemical
Publication statusPublished - 31 Oct 2014
Externally publishedYes


This work was supported partly by the Turkish Academy of Sciences (TUBA) and the Research Fund of Fırat University FÜBAP (Project No. 1880 ).

FundersFunder number
Fırat University FÜBAP1880
Türkiye Bilimler Akademisi


    • Ethanol sensing
    • Phthalocyanine
    • Sensing mechanism
    • Sensitivity


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