Electrochromic performance and ion sensitivity of a terthienyl based fluorescent polymer

Date

2010-04-01

Author

Atilgan, Nurdan
CİHANER, ATİLLA
Önal, Ahmet Muhtar

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

203
views

0
downloads

A novel terthienyl based fluorescent polymer bearing strong electron-withdrawing substituents directly attached to the 3,4-positions of the central thiophene ring was synthesized by electrochemical polymerization of diethyl 2,5-di(3,4-ethylenedioxythiophen-2-yl)thiophene-3,4-dicarboxylate. The corresponding polymer was characterized by cyclic voltammetry, FT-IR and UV-vis spectroscopy. The polymer has a well-defined redox process (E-p,E-1/2 = 0.74 V) and demonstrates a reversible electrochromic behavior; lilac in the neutral state and transparent sky blue in the oxidized state. Also, the polymer had low band gap (E-g = 1.82 eV) and high redox stability (retaining 94.0% of its electro-activity after 500th switch). Moreover, the sensitivity of both the monomer and its polymer towards metal cations was investigated by monitoring the change in the fluorescence intensity. Among various common ions both the monomer and its polymer were found to be selective towards Cu2+ and Cu+ ions by quenching the fluorescence efficiency with a Stern-Volmer constant (K-sv) of (1.4-1.6 x 10(3) M-1) and (1.5-1.8 x 10(2) M-1) for monomer and polymer solutions, respectively.

Subject Keywords

Materials Chemistry, Biochemistry, General Chemistry, General Chemical Engineering, Polymers and Plastics, Environmental Chemistry

URI

https://hdl.handle.net/11511/40717

Journal

REACTIVE & FUNCTIONAL POLYMERS

DOI

https://doi.org/10.1016/j.reactfunctpolym.2009.12.006

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Synthesis of a novel fluorescent and ion sensitive monomer bearing quinoxaline moieties and its electropolymerization Carbas, Buket Bezgin; KIVRAK, Arif; Zora, Metin; Önal, Ahmet Muhtar (Elsevier BV, 2011-05-01) A novel terthienyl based fluorescent polymer bearing pendant quinoxaline moieties directly attached to the 3-positions of the central thiophene ring was synthesized by electrochemical polymerization of 4-((2,5-dithiophen-2-yl)thiophen-3-yl)pyrrolo[1,2-a]quinoxaline (TT-Q). The corresponding polymer was characterized by cyclic voltammetry, FT-IR and UV-vis spectroscopy. The polymer exhibits a reversible redox behavior (Ep(1/2) = 1.05 V) accompanied with a reversible electrochromic behavior; yellowish orange ...
Selective mercury uptake by polymer supported hydroxyethyl sulfonamides Oktar, Ceren; Yılmaz, Levent; Ozbelge, H. Onder; Bicak, Niyazi (Elsevier BV, 2008-04-01) Hydroxyethyl sulfonamide function supported on styrene-divinyl benzene (9% mol/mol) bead resin is presented as mercury selective reagent. The resin product with 3.49 mmol g(-1) of 2-hydroxyethyl sulfonamide content removes reasonable quantities of mercuric ions (0.83-1.64 mmol g(-1)) from aqueous solutions of HgCl2, Hg (CH3COO)(2) and Hg (NO3)(2), in non-buffered conditions. Experiments showed that, the resin is able to extract mercury selectively, in the presence of foreign ions such as Zn(II), Cd(II), Fe(...
Proquinoidal-Conjugated Polymer as an Effective Strategy for the Enhancement of Electrical Conductivity and Thermoelectric Properties Tam, Teck Lip Dexter; Ng, Chee Koon; Lim, Siew Lay; Yıldırım, Erol; Ko, Jieun; Leong, Wei Lin; Yang, Shuo-Wang; Xu, Jianwei (American Chemical Society (ACS), 2019-10-22) P-doping of conjugated polymers requires electron transfer from the conjugated polymer to the p-dopant. This implies that the highest occupied molecular orbital (HOMO) of the conjugated polymer has to be higher than the lowest unoccupied molecular orbital (LUMO) of the p-dopant. Although commonly used p-dopants such as 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) have a low LUMO of -5.24 eV, most conjugated polymers used in high-performance field-effect transistors are donor- acceptor-type ...
Immobilization of invertase on a conducting polymer of 1-(4-nitrophenyl)-2,5-di(2-thienyl)-1H-pyrrole Tuncagil, Sevinc; Kiralp, Senem; Varls, Serhat; Toppare, Levent Kamil (Elsevier BV, 2008-03-01) In this study, immobilization of invertase was achieved on a conducting polymer of 1-(4-nitrophenyl)-2,5-di(2-thienyl)-1H-pyrrole) (SNS (NO2)) via electrochemical polymerization. Kinetic parameters, maximum reaction rate (V-max) and substrate affinity (K-m), optimum temperature and pH, operational and storage stabilities of immobilized enzyme were determined.
Electrochemical Synthesis of a Water-Soluble and Self-Doped Polythiophene Derivative Turac, Ersen; Varol, Ramazan; Ak, Metin; Sahmetlioglu, Ertugrul; Toppare, Levent Kamil (Informa UK Limited, 2008-01-01) A new monomer, 4-(thiophen-3-yl methyleneamino)benzene sulfonate) (ThSA), was synthesized and characterized. Electrochemical polymerization of ThSA yields a water-soluble and self-doped polymer (PThSA). This polymer was characterized by FT-IR, NMR, DSC, XRD and conductivity measurements. (C) Koninklijke Brill NV, Leiden, 2008

Citation Formats

N. Atilgan, A. CİHANER, and A. M. Önal, “Electrochromic performance and ion sensitivity of a terthienyl based fluorescent polymer,” REACTIVE & FUNCTIONAL POLYMERS, pp. 244–250, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40717.