Study of the sensor response of spun metal phthalocyanine films to volatile organic vapors using surface plasmon resonance

Abstract

This document is the author deposited version. You are advised to consult the publisher's version if you wish to cite from it. Published versionEVYAPAN, Murat, KADEM, Burak, BASOVA, Tamara V., YUSHINA, Irina V. and HASSAN, Aseel (2016). Study of the sensor response of spun metal phthalocyanine films to volatile organic vapors using surface plasmon resonance. Sensors and Actuators B: Chemical, 236, 605-613. Copyright and re-use policySee http://shura.shu.ac.uk/information.html Sheffield Hallam University Research Archivehttp://shura.shu.ac.uk Study of the sensor response of spun metal phthalocyanine films to volatile organic vapors using surface plasmon resonance AbstractIn this work, thin films of chloroaluminium phthalocyanine (ClAlPc), fluoroaluminium phthalocyanine (FAlPc) and fluorochromium phthalocyanine (FCrPc), which are insoluble in conventional solvents, were deposited by spin coating of their solutions in trifluoroacetic acid.The sensing response of these films versus acetic acid, three alcohols (methanol, ethanol, butanol) and three amines (methylamine, dimethylamine, trimethylamine) have been investigated using surface plasmon resonance as the sensing method. It has been shown that the sensor response of the investigated films decreases in the following order: acetic acid > alcohols > amines. The optical changes as monitored by SPR method have been used in conjunction with Fick's second law of diffusion to determine the diffusion coefficients of analyte vapor during the films' swelling process. The obtained results showed that the diffusion coefficients and the swelling characteristics of the films are dependent on the functional group of the phthalocyanine molecule and the molecular size of the analyte.

Understanding the gas adsorption kinetics of Langmuir-Schaefer porphyrin films using two comparative sensing systems

“…The thicknesses of the LS films were evaluated by fitting the SPR curves based on the Fresnell equations. The fitting procedure was achieved using the Winspall 3.01 software which was produced by the Max-Planck Institute [18].…”

“…These two distinct chemicals have been chosen to help clarify the adsorption kinetics of EHO films. UV-vis and SPR measurement systems are both very capable of detecting small sensor responses [18,19]. Both are optical techniques but differ in what they measure; while UV-vis detects spectral absorbance changes SPR is sensitive to thickness changes of the organic film.…”

“…Fick's second law of diffusion describes this relation and means that the rate of change in concentration with time is proportional to the rate at which the concentration gradient changes with the distance in a given direction [35]. The simplified form of the diffusion equation can be defined by the following equation [18]: In order to obtain quantitative results about sensor performance, the sensitivity (S) and the limit of detection (LOD) parameters were calculated and summarized in Table 3 can be detected by the sensor and described by the following equation [22]:…”

An Enhanced Safrole Sensing Performance of a Polyacrylonitrile Nanofiber- Based-QCM Sensor by Overlaying with Chitosan

“…Studies show that the development of real-time sensors for volatile organic compounds (VOCs) is progressing rapidly. These sensors are developed based on unique electrode-analyte interactions such as resistive (Wang et al 2017), photoelectric (Aba et al 2014), amperometric (He et al 2014), optical (Evyapan et al 2016), and acoustic wave interactions (Wang et al 2015). To obtain sensitive, real-time, and convenient vapor detection, the quartz crystal microbalance (QCM) sensors are developed as a very promising alternative to classical detection methods (Julian et al 2019;Siow et al 2019).…”

Optical, Electrical and Photoelectrical Properties of Quercetin-Co(ii) Complex/N-Si Organic-Inorganic Hybrid Device

“…By making contact them with inorganic semiconductors, i.e. Si, GaAs, GaN and so on, many electronic and optoelectronic devices, OLEDs [1][2][3][4], Schottky Barrier Diodes (SBD) [5][6][7], OFETs [8][9][10]have been fabricating for long years. OLEDs have been extensively studied because of a large number of touchscreen mobile phone and thin displays fabrications.…”