Biochemical synthesis of water soluble conducting polymers

2016 ◽  
Author(s):  
Ferdinando F. Bruno ◽  
Manuele Bernabei
Keyword(s):  
Conducting Polymers ◽  
Water Soluble

scholarly journals Conducting Cytocompatible Scaffolds: Composite of Sodium Hyaluronate and Colloidal Particles of Conducting Polymers

2021 ◽  
Author(s):  
Thanh Huong Truong ◽  
Lenka Musilová ◽  
Věra Kašpárková ◽  
Daniela Jasenská ◽  
Petr Ponížil ◽  
...  
Keyword(s):  
Conducting Polymers ◽  
Colloidal Particles ◽  
Sodium Hyaluronate ◽  
Water Soluble ◽  
Aqueous Environment ◽  
Ethylcarbodiimide Hydrochloride ◽  
Swelling Capacity ◽  
Thawing Process ◽  
Interconnected Pores

Abstract Novel bio-inspired conductive scaffolds composed of sodium hyaluronate containing water soluble polyaniline or polypyrrole colloidal particles (concentrations 0.108, 0.054 and 0.036 % w/w) were manufactured. For this purpose, either crosslinking with N-(3-dimethylaminopropyl-N-ethylcarbodiimide hydrochloride and N-hydroxysuccinimid or a freeze-thawing process in the presence of poly(vinylalcohol) were used. The scaffolds comprised interconnected pores with prevailing porosity values of ~30 % and pore sizes enabling the accommodation of cells. Good swelling capacity (92 – 97 %) without any sign of disintegration was typical for all samples. The elasticity modulus depended on the composition of the scaffolds, with the highest value of ~50 000 Pa obtained for the sample containing the highest content of polypyrrole particles. The scaffolds did not possess cytotoxicity and allowed cell adhesion and growth on the surface. Using the in vivo-mimicking conditions in a bioreactor, cells were also able to grow into the structure of the scaffolds. The technique of scaffold preparation used here thus overcomes the limitations of conducting polymers (e.g. poor solubility in an aqueous environment, and limited miscibility with other hydrophilic polymer matrices) and moreover leads to the preparation of cytocompatible scaffolds with potentially cell-instructive properties, which may be of advantage in the healing of damaged electro-sensitive tissues.

Optically Transparent Conducting Polymers from Fused Heterocycles

2006 ◽  
Vol 965 ◽  
Author(s):  
Mustafa Selman Yavuz ◽  
Arvind Kumar ◽  
Byoungchul Lee ◽  
Jayesh G. Bokria ◽  
Tanmoy Dey ◽  
...  
Keyword(s):  
Conducting Polymers ◽  
Aqueous Dispersion ◽  
Water Soluble ◽  
Hole Injection ◽  
Layer By Layer ◽  
Light Emitting Devices ◽  
Fused Heterocycles ◽  
Transparent Conducting ◽  
Processing Cost ◽  
Optically Transparent

ABSTRACTResearch in the field of optically transparent conducting polymers has been gaining great attention due to their relatively low processing cost, light weight and flexibility as compared to their inorganic counterpart. Besides having found several applications in the field of electronic and optoelectronic devices, optically transparent conducting polymers are primarily used as a hole- injection layers in photovoltaics and light-emitting devices. Herein, we report the electronic and optoelectronic properties of conducting polymers obtained from different fused heterocycles, viz. thieno[3,4-b]furan, thieno[3,4-b]thiophene, and dimers of thieno[3,4-b]thiophene. Aqueous dispersion polymerization in the presence of poly(styrene sulfonic acid) as a template is also performed to make them processable from water. Water soluble conducting polymer was obtained via ring sulfonation of chemically or electrochemically prepared polythieno[3,4-b]thiophene [PT34bT]. The optical properties were tuned by varying sulfonation level or by depositing different number of bilayers via layer-by-layer technique. Stable conjugated polymers with band gaps ranging from 0.8 to 1.6 eV were obtained.

ChemInform Abstract: Water-Soluble Conducting Polymers.

ChemInform ◽  
1987 ◽  
Vol 18 (30) ◽  
Author(s):  
A. O. PATIL ◽  
Y. IKENOUE ◽  
F. WUDL ◽  
A. J. HEEGER
Keyword(s):  
Conducting Polymers ◽  
Water Soluble

Regioregular poly(thiophene-3-alkanoic acid)s: water soluble conducting polymers suitable for chromatic chemosensing in solution and solid state

Tetrahedron ◽  
2004 ◽  
Vol 60 (49) ◽  
pp. 11269-11275 ◽  
Author(s):  
Paul C. Ewbank ◽  
Robert S. Loewe ◽  
Lei Zhai ◽  
Jerry Reddinger ◽  
Geneviève Sauvé ◽  
...  
Keyword(s):  
Solid State ◽  
Conducting Polymers ◽  
Water Soluble ◽  
Alkanoic Acid ◽  
Regioregular Poly

Novel Langmuir-Blodgett Films of Electrically Conducting Polyion Complexes and Diblock Copolymers

1992 ◽  
Vol 247 ◽  
Author(s):  
A. Timothy Royappa ◽  
Randall S. Saunders ◽  
Robert E. Cohen ◽  
Michael F. Rubner
Keyword(s):  
Conducting Polymers ◽  
Diblock Copolymers ◽  
Water Soluble ◽  
Molecular Organization ◽  
Lb Films ◽  
Langmuir Blodgett ◽  
First Case ◽  
Langmuir Blodgett Films ◽  
Order Of Magnitude ◽  
Polyion Complexes

ABSTRACTThe Langmuir-Blodgett (LB) technique has been used to form two different types of multilayer films with novel molecular organizations. In the first case, a new method of fabricating superlattices of conducting polymers has been devised and studied. This method involves forming polyion complexes of acid derivatized conducting polymers with stearylamine (StNH2) and subsequently manipulating them into AB type superlattices by the LB technique. To date, superlattices consisting of isolated alternating monolayers of poly(thiophene acetic acid) (PTAA) and sulfonated polyaniline (PAn) have been studied. The layered structure of these films was found to be very similar to that of their respective homopolymer LB films, as evidenced by X-ray diffraction patterns. The conductivity of these superlattices was in the range of 10−1 S/cm, which is approximately one order of magnitude higher than that obtained with the homopolymer LB films (about 10−2 S/cm). In the second case, LB films of a novel diblock copolymer have been made, where one of the blocks is a water-insoluble polyacetylene precursor and the other block a non-conjugated, water-soluble poly(norbornene) derivative. The precursor block of the LB films could be converted to trans-polyacetylene by heating, and doped to a conductivity of 10−3 S/cm, which was significantly higher than that of cast (10−7 S/cm) or spin-coated (10−5 S/cm) films of the same material. Thus, in both cases, the unique molecular organization created by the LB technique has resulted in films with higher conductivities than those obtained by traditional casting techniques.

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