The polythiophene molecular segment as a sensor model for H2O, HCN, NH3, SO3, and H2S: a density functional theory study

被引：0
作者：
Ali Shokuhi Rad
Mehri Esfahanian
Etesam Ganjian
Habib-allah Tayebi
Samaneh Bagheri Novir
机构：
[1] Islamic Azad University,Department of Chemical Engineering, Qaemshahr Branch
[2] Babol Noshirvani University of Technology,Department of Chemical Engineering
[3] Islamic Azad University,Department of Textile Engineering, Qaemshahr Branch
[4] Islamic Azad University,Department of Chemistry, Pharmaceutical Sciences Branch
来源：
Journal of Molecular Modeling | 2016年 / 22卷
关键词：
Polythiophene; DFT; Adsorption; Polymeric sensor; Molecular interaction;
D O I：
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学科分类号：
摘要：
Studying the interaction of some atmospheric gases (H2O, HCN, NH3, SO3 and H2S) with 3PT oligomers is important in the development of polymeric sensors for gas detection. In the present study, we studied the relaxed geometries, interaction energies, charge analysis, HOMO–LUMO orbital analysis, and UV–vis spectra of all interacted systems using first-principles density functional theory (DFT). All these analyses indicated the potential of polythiophene as an inexpensive polymeric sensor for the analytes mentioned. Interaction energy values of −19.90, −19.66, −14.01, −8.70, and −4.76 kJ mol−1 were achieved for adsorption of SO3, H2O, NH3, HCN, and H2S on 3PT, respectively. Consequently, clarification of their physical parameters became the major focus of this study.
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