Preparation and electrical conductivity of some conjugated polymers

2010 ◽  
Vol 84 (2) ◽  
pp. 184-186 ◽  
Author(s):  
G. De Vries ◽  
L. K. H. van Beek
Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3657
Author(s):  
Andrey V. Orlov ◽  
Svetlana G. Kiseleva ◽  
Galina P. Karpacheva ◽  
Dmitriy G. Muratov

New oxidative polymerization monomers—diarylaminodichlorobenzoquinones were synthesised by alkylating aniline, m-phenylenediamine and methanilic acid with chloranil. Oxidative polymerization of diarylaminodichlorobenzoquinones was studied for the first time in relation to the concentration of the monomer, acid, and oxidant/monomer ratio. It was found that the synthesized monomers are highly active in the polymerization reaction, and the oxidation rate grows with the increase in the acid concentration. Only one arylamine group is involved in the polymerization reaction. The optimal oxidant/monomer ratio is stoichiometric for one arylamine group, despite the bifunctionality of the monomers. It was shown that the type of the substituent in the aniline ring (electron donor or electron acceptor) determines the growth of the polymer chain and the structure of the resulting conjugated polymers. A mechanism for the formation of active polymerization centers for diarylaminodichlorobenzoquinones was proposed. FTIR-, NMR-, X-ray photoelectron spectroscopy, and SEM were used to identify the structure of the synthesized monomers and polymers. The obtained polymers have an amorphous structure and a loose globular morphology. The frequency dependence of the electrical conductivity was studied.


2020 ◽  
Vol 30 (24) ◽  
pp. 1909805 ◽  
Author(s):  
Lifeng Huang ◽  
Naresh Eedugurala ◽  
Anthony Benasco ◽  
Song Zhang ◽  
Kevin S. Mayer ◽  
...  

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1068 ◽  
Author(s):  
Robert Texidó ◽  
Gonzalo Anguera ◽  
Sergi Colominas ◽  
Salvador Borrós ◽  
David Sánchez-García

The synthesis of 2,2′-bipyrroles substituted at positions 5,5′ with pyrrolyl, N-methyl-pyrrolyl and thienyl groups and their application in the preparation of conducting polymers is reported herein. The preparation of these monomers consisted of two synthetic steps from a functionalized 2,2′-bipyrrole: Bromination of the corresponding 2,2′-bipyrrole followed by Suzuki or Stille couplings. These monomers display low oxidation potential compared to pyrrole because of the extended length of their conjugation pathway. The resulting monomers can be polymerized through oxidative/electropolymerization. Electrical conductivity and electrochromic properties of the electrodeposited polymeric films were evaluated using 4-point probe measurements and cyclic voltammetry to evaluate their applicability in electronics.


2021 ◽  
Vol 8 (10) ◽  
Author(s):  
Santosh J. Uke ◽  
Satish P. Mardikar ◽  
Ashwani Kumar ◽  
Yogesh Kumar ◽  
Meenal Gupta ◽  
...  

Owing to their extraordinary properties of π-conjugated polymers (π-CPs), such as light weight, structural versatility, ease of synthesis and environmentally friendly nature, they have attracted considerable attention as electrode material for metal-ion batteries (MIBs) and supercapacitors (SCPs). Recently, researchers have focused on developing nanostructured π-CPs and their composites with metal oxides and carbon-based materials to enhance the energy density and capacitive performance of MIBs and SCPs. Also, the researchers recently demonstrated various novel strategies to combine high electrical conductivity and high redox activity of different π-CPs. To reflect this fact, the present review investigates the current advancements in the synthesis of nanostructured π-CPs and their composites. Further, this review explores the recent development in different methods for the fabrication and design of π-CPs electrodes for MIBs and SCPs. In review, finally, the future prospects and challenges of π-CPs as an electrode materials for strategies for MIBs and SCPs are also presented.


2018 ◽  
Vol 6 (34) ◽  
pp. 16495-16505 ◽  
Author(s):  
Zhiming Liang ◽  
Yadong Zhang ◽  
Maryam Souri ◽  
Xuyi Luo ◽  
Alex M. Boehm ◽  
...  

Larger dopants with high electron affinities are found to yield increased electrical conductivities and power factors at lower doping concentrations.


2020 ◽  
Vol 32 (49) ◽  
pp. 2005129
Author(s):  
Sang Eun Yoon ◽  
Jaehong Park ◽  
Ji Eon Kwon ◽  
Sang Yeon Lee ◽  
Ji Min Han ◽  
...  

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