| Yazarlar (10) |
Sabina Jusufovic
|
|
Gizem Yıldırım Baştemur
Türkiye |
|
Dilek Evecan
|
|
Sabriye Perçin Özkorucuklu
Türkiye |
|
Esra Zayim
Türkiye |
|
Göksenin Kalyon
Türkiye |
|
Zeki Candan
İstanbul Üniversitesi-Cerrahpaşa, Türkiye |
Dr. Öğr. Üyesi Ekrem DURMAZ
Kastamonu Üniversitesi, Türkiye |
|
Ayhan Tozluoğlu
Düzce Üniversitesi, Türkiye |
|
Ayşe Erol
Türkiye |
| Özet |
| This study investigates electrochromic properties of tetrabutylammonium perchlorate (TBAP)-doped polypyrrole (PPy) and PPy/Nanocellulose (NC) composite films, where TBAP-doped PPy/NC composites were synthesized with various NC content ranging from 0 % to 100 % by volume in 0.1 M pyrrole solution and deposited on fluorine-doped tin oxide (FTO) glass using potentiostatic polymerization. The optimum polymerization time for depositing a uniform, adhesive and stable films on FTO with higher optical contrast between bleached and colored states are found to be 10 s at a constant voltage of 1.2 V. To compare the electrochromic properties of NC-free and NC-containing TBAP-doped PPy films, cyclic voltammetry (CV), chronoamperometry (CA), and optical transmittance spectroscopy were carried out in 0.1 M TBAP electrolyte. A reversible color change from yellow at – 0.6 V (bleached state) to blue gray at + 0.6 V (colored state) is observed for %40 NC-containing TBAP-doped PPy composite film. CV measurements at the potential between – 0.8 V and + 0.8 V show an increase at the oxidation and reduction peak currents up to 60 % NC in TBAP-doped PPy, but the highest optical contrast and uniformity is observed for 40 % NC-containing composite film. And scanning electron microscopy images reveal that surface morphology changes and cluster/agglomerations on the surface of the films are formed when the %NC value exceeds 60 %. Of the NC-containing composite films, the 40 % NC-containing TBAP-doped PPy composite film exhibits the best adhesion to FTO substrate. Furthermore, the highest optical contrast (25.9 % at 700 nm) is observed for %40 NC-containing TBAP-doped PPy when compared to NC-free TBAP-doped PPy film (18.7 % at 700 nm). Therefore, PPy/NC composite with 40 % volume ratio of NC in PPy was selected for further CV and CA experiments. Compared to NC-free films, 40 % NC-containing TBAP-doped PPy exhibits faster switching time (1.16 s), higher optical contrast (25.9 % at 700 nm), higher coloration efficiency (65.6 cm2/C), and better uniformity on FTO. Our results may lead to the design of a high-performance electrochromic devices using NC[sbnd]Conductive Polymers, with electrochromic and mechanical properties that can be adjusted through NC composition, especially to create flexible composites with enhanced mechanical strength. |
| Anahtar Kelimeler |
| Cellulose | Conductive polymers | Electrochromic | Electrochromism | Electropolymerization | Nanocellulose | Polypyrrole | PPy |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | Thin Solid Films |
| Dergi ISSN | 1879-2731 Wos Dergi Scopus Dergi |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Dergi Grubu | Q2 |
| Makale Dili | İngilizce |
| Basım Tarihi | 02-2025 |
| Cilt No | 811 |
| Sayı | 1 |
| Sayfalar | 1 / 10 |
| Doi Numarası | 10.1016/j.tsf.2025.140606 |
| Makale Linki | https://www.sciencedirect.com/science/article/abs/pii/S0040609025000070 |
