وثيقة
Sensing of SO3, SO2, H2S, NO2 and N2O toxic gases through aza-macrocycle via DFT calculations
وكيل مرتبط
Sajid , H, مؤلف مشارك
Gilani , M.A, مؤلف مشارك
Ahmed , E, مؤلف مشارك
Arshad , M, مؤلف مشارك
Mahmood , T, مؤلف مشارك
عنوان الدورية
Computational and Theoretical Chemistry
دولة النشر
Kingdom of Bahrain
مكان النشر
sakhir, bahrain
الناشر
University of Bahrain
تاريخ النشر
2022
اللغة
الأنجليزية
الموضوع
الملخص الإنجليزي
ABSTRACT:
The toxic gas sensing applications find immense attention in environmental monitoring. In this research, the
adsorption of nitrogen and sulfur-containing gaseous molecules i.e., N2O, NO2, H2S, SO2 and SO3 on organic azamacrocyclic hexaazabipyH2 (HA) is analyzed through DFT simulations. The interactions of toxin analytes with HA are expressed through the interaction stabilities of optimized geometries, and electronic parameters including highest occupied and lowest unoccupied molecular orbitals energies and NBO charged transfer analysis. Our results indicate that the gaseous molecules are physisorbed onto the HA with the interaction energies of − 4.80, − 4.86, − 7.09, − 7.42 and − 11.64 kcal/mol for NO2, N2O, H2S, SO2 and SO3, respectively. The trend of interaction stability of complexes is observed as, SO3@HA > SO2@HA > H2S@HA > N2O@HA > NO2@HA. The adsorption of the gaseous molecule on the electronic structure of HA is significant, especially for sulfurcontaining analytes. The effects of the applied electric field from the range of − 0.15 to +0.15 V/Å in the direction of adsorbed molecules (Y-axis) on the interaction energies and dipole moment of complexes have been measured. It can be concluded that the HA macrocycle shows greater sensitivity towards the toxic gas molecules and therefore, can be applied for their sensing.
المجموعة
المعرف
https://digitalrepository.uob.edu.bh/id/5117ffee-48b5-4497-bb24-7a804daf7edf
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