A novel multi-electrochromic polymer based on selenophene and benzotriazole via electrochemical and chemical polymerization

Demir, Fatma
Keles, Duygu
Karabag, Aliekber
Çırpan, Ali
Toppare, Levent Kamil
In this study, a novel donor-acceptor type monomer was designed based on selenophene and benzotriazole with a bulky pendant group and synthesized through Stille coupling reaction. The monomer was polymerized electrochemically by using cyclic voltammetry and also chemically by oxidation in the presence of FeCl3. Both polymers were then compared in terms of their optical properties, electrochemical and spectroelectrochemical behaviors, kinetic and colorimetric properties and surface morphologies. Independent of the polymerization method, both electrochemically (E-PSeBTz) and chemically polymerized (C-PSeBTz) coatings showed quite similar properties. Both polymers have p-doping character and multichromic properties in their oxidized states. The polymers can be fully switched between their oxidized and neutral states in fairly short times with acceptable optical contrast at different wavelengths. Both polymers exhibit a lambda(max) of 505 nm and the optical band gaps of the materials were found to be 1.85 eV and 1.80 eV for E-PSeBTz and C-PSeBTz, respectively.


Preparation of a conducting flexible material from silane coupling agent and hydroxyl terminated polybutadiene rubber by hydrolysis and condensation
Karatas, Y; Toppare, Levent Kamil; Tincer, T (Informa UK Limited, 2003-01-01)
Synthesis and characterization of a flexible polymer produced from silane coupling agent (SCA) and hydroxyl terminated polybutadiene (HTPB) were performed. Mechanical properties of chemically and electrochemically prepared conducting composites synthesized from this polymer were investigated. Conductivities of the composites were also measured. Polypyrrole enhanced the mechanical properties of the chemically prepared conducting composite. Doping with iodine greatly changed the conductivity of the composite....
Electrochromic properties of 'Trimeric' thiophene-pyrrole-thiophene derivative grown from electrodeposited 6-(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)hexan-1-amine and its copolymer
Tarkuc, Simge; Ak, Metin; Onurhan, Erdal; Toppare, Levent Kamil (Informa UK Limited, 2008-01-01)
A centrosymmetric polymer precursor, namely 6-(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)hexan-1-amine (TPHA), was synthesized via a Knorr-Paal reaction using 1,4-di(2-thienyl)-1,4-butanedione and hexane-1,6-diamine. The resultant monomer was characterized by Nuclear Magnetic Resonance (H-1-NMR). Electroactivity of TPHA was investigated via cyclic voltammetry. The electronic structure and the nature of electrochromism in P(TPHA) and its copolymer with EDOT, (P(TPHA-co-EDOT)), were examined via spectroelectrochem...
Comparison of Natural Halloysite With Synthetic Carbon Nanotubes in Poly(lactic acid) Based Composites
Erpek, Canan Esma Yeniova; ÖZKOÇ, GÜRALP; Yılmazer, Ülkü (Wiley, 2017-11-01)
The objective of this study is to compare the mechanical properties, structure and degradability of the nanocomposites prepared with tubular nanofillers, halloysite (HNT) and carbon nanotube (CNT) in poly(lactic acid) (PLA), and thermoplastic polyurethane (TPU) toughened PLA (T-PLA) matrices. In the PLA matrix, CNT increased, whereas HNT decreased the tensile strength with increasing filler content. Also, the elongation at break and impact strength decreased with increasing CNT content, but these properties...
A newly designed anthracene and isoindigo based polymer: synthesis, electrochemical characterization and biosensor applications
Soylemez, Saniye; Goker, Seza; Toppare, Levent Kamil (Royal Society of Chemistry (RSC), 2019-09-21)
A glucose biosensor based on a newly designed and synthesized polymer, poly[(E)-6-methyl-6 '-(10-methylanthracen-9-yl)-1,1 '-diundecyl-[3,3 '-biindolinylidene]-2,2 '-dione] (namely PIIDAnth), and single walled carbon nanotubes (SWCNTs) was fabricated via an easy one pot electrode preparation and explored as a glucose electrochemical sensor. The key aim of this paper is to emphasize creation of the new surface design of sensing platforms based on a novel polymer and nanomaterial for glucose detection. With t...
A functional immobilization matrix based on a conducting polymer and functionalized gold nanoparticles: Synthesis and its application as an amperometric glucose biosensor
Kesik, Melis; Kanik, Fulya Ekiz; Hizalan, Gonul; Kozanoglu, Duygu; Nalbant Esentürk, Emren; Timur, Suna; Toppare, Levent Kamil (Elsevier BV, 2013-08-02)
Combination of nanoparticles and biomolecules attracted considerable attention in biosensing applications. In this study, effective surface design was investigated by modifying the electrode surface with pristine and functionalized gold nanoparticles. For this purpose, spherical gold nanoparticles were synthesized and characterized with UV-vis spectroscopy and transmission electron microscopy (TEM) analyses. Then, gold nanoparticles were modified with mercaptopropionic acid (MPA) yielding Au-S bonds (Au NPs...
Citation Formats
F. Demir, D. Keles, A. Karabag, A. Çırpan, and L. K. Toppare, “A novel multi-electrochromic polymer based on selenophene and benzotriazole via electrochemical and chemical polymerization,” JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY, pp. 197–205, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38635.