Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/3940
Title: Investigation of rGO and chitosan effects on optical and electrical properties of the conductive polymers for advanced applications
Authors: Özkan, Betül Ciçek
Soğancı, Tuğba
Turhan, Huseyin
Ak, Metin
Keywords: Blending
Chitosan
Composite films
Conducting polymers
Cyclic voltammetry
Electrochemical techniques
Graphene
Indium tin oxide
Nanocomposites
Scanning electron microscopy
Spectroelectrochemistry
Stability
Ultrasonic applications
Optical contrast
Optical properties
Spectroelectrochemistry
Electroactive monomers
Electrochromic switching
Modified electrode
Optical and electrical properties
Surface characterization
Reduced graphene oxides
rGO
Indium tin oxide
Publisher: Elsevier B.V.
Abstract: A simple and fast method for preparing chitosan (CH)/conducting polymer (CP) composite film with and without reduced graphene oxide (rGO) was realized to investigate the effect of rGO on an optoelectrochemical system. For this purpose, firstly rGO was successfully dispersed in the acidic aqueous solution of CH by ultrasonic agitation. One by one CH and CH/rGO blend deposited on an indium tin-oxide (ITO) coated glass electrode by drop-casting method. After that, N1,N4-bis(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)terephthalamide (m(BT)) electroactive monomer was deposited onto CH and CH/rGO modified ITO electrode surfaces via electrochemical polymerization. Electrochemical and optical properties of the composite structures were investigated by cyclic voltammetry (CV) technique and UV–vis spectroscopy. The surface characterizations of nanocomposites have been performed by scanning electron microscopy. It was observed that, chemical functionalities of CH, rGO and p(BT) provide excellent compatibility. Therefore, the CH/rGO/p(BT) electroactive nanocomposite has better conductivity, stability, charge density, electrochromic switching kinetics and electrochemical properties than the CH/p(BT) and p(BT)/rGO composites. This is due to more efficient synergistic effect between CH, rGO and p(BT) which provide larger active surface area and ease ion transport. This method for producing composite films with novel optical, electrical and stability properties has been gaining a new perspective in the material world, which enables smart and advanced material design in various practical applications especially for designing molecular detection systems.
URI: https://hdl.handle.net/11499/3940
ISSN: 0013-4686
Appears in Collections:Fen-Edebiyat Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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