The bisbenzothiazole-p-tert-butylcalix[4]arene-thiourea Langmuir-Blodgett thin films: preparation, optical properties, swelling dynamics and gas sensing properties via host-guest principles
Küçük Resim Yok
Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Calix[4]arene-based materials have been investigated to develop selective, sensitive, and low cost chemical sensors due to their simple, low cost synthesis, and wide range of chemical and physical properties. In this study, bisbenzothiazole-p-tert-butylcalix[4]arene-thiourea (BBTC[4]T) molecules were employed to produce thin films via Langmuir-Blodgett (LB) thin film fabrication technique. The optical properties and gas sensing abilities of these BBTC[4]T LB films were examined by Surface Plasmon Resonance (SPR) method. In order to illuminate the optical properties of calix[4]arene-based LB films the Winspall software was utilized by fitting the experimental data obtained from SPR device. The values of 1.23 +/- 0.07 nm and 1.53 +/- 0.05 were determined for the thickness per monolayer and the refractive index of BBTC[4]T-based LB films, respectively. The fabricated optical sensor was employed for its sensing abilities against to organic vapours (acetone, ethyl alcohol, methyl alcohol and isopropyl alcohol) via the mechanism of host-guest interaction. The current study also describes the diffusion coefficients of these organic vapours to illuminate the swelling dynamics' BBTC[4]T-based LB thin films by performing the early-time Fick's diffusion equation. The responses of calix[4]arene-based optical sensor in terms of the shift in reflective intensity and the values of diffusion coefficients showed that BBTC[4]T molecules can be developed as potential chemical sensor element for acetone vapour compared to alcohol vapours.
Açıklama
Anahtar Kelimeler
Bisbenzothiazolecalix[4]Thiourea, Lb Thin Film, Optical Sensor, Host-Guest Principle, Spr
Kaynak
Journal Of Inclusion Phenomena And Macrocyclic Chemistry
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
102
Sayı
7.Ağu
