THE ELECTROCHEMICAL POLYMERIZATION OF ORTHO-DIAMINOBENZENE ORTHO-AMINOPHENOL AND THE PROPERTIES OF POLYMER FILMS

1988 ◽  
Vol 4 (05) ◽  
pp. 505-510 ◽  
Author(s):  
Guo Jingdong ◽  
◽  
Chen Yanzhen ◽  
Tian Zhaowu
Keyword(s):  
Polymer Films ◽  
Electrochemical Polymerization

scholarly journals Conjugated Polymer Films Having a Uniaxial Molecular Orientation and Network Structure Prepared by Electrochemical Polymerization in Liquid Crystals

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2425
Author(s):  
Jiuchao Dong ◽  
Shigeki Nimori ◽  
Hiromasa Goto
Keyword(s):  
Liquid Crystals ◽  
Network Structure ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Main Chain ◽  
Electrochemical Polymerization ◽  
Electronic Devices ◽  
New Method ◽  
Magnetic Orientation ◽  
Organic Electronic Devices

A new method for fabricating conjugated polymer films was developed using electrochemical polymerization in liquid crystals and magnetic orientation. A uniaxial main chain orientation and a crosslinked network structure were achieved with this method. By employing eight types of monomers, the influence of the crosslinking for the film was investigated. The crosslinking was found to improve the solvent resistance of the conjugated polymer films. This new method is expected to be useful in various applications, such as high-powered organic electronic devices with durability.

scholarly journals Electrosynthesis and Electrochromism of a New Crosslinked Polydithienylpyrrole with Diphenylpyrenylamine Subunits

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2777
Author(s):  
Yu-Ruei Kung ◽  
Sin-Yun Cao ◽  
Sheng-Huei Hsiao
Keyword(s):  
Polymer Films ◽  
Near Infrared ◽  
Electrochemical Polymerization ◽  
Condensation Reaction ◽  
Fast Response ◽  
Oxidation States ◽  
Ito Glass ◽  
Good Cycling Stability ◽  
Electrochromic Polymer ◽  
Yellowish Orange

A new electroactive monomer with two 2,5-di(2-thienyl)pyrrole (SNS) units and one diphenylpyrenylamine (DPPA) subunit, namely N,N-bis(4-(2,5-di(2-thienyl)-1H-pyrrol-1-yl)-phenyl)-1-aminopyrene (DPPA-2SNS), was synthesized from 1,4-di-(2-thienyl)butane-1,4-dione with N,N-di(4-aminophenyl)-1-aminopyrene through the Paal–Knorr condensation reaction. Visible and near-infrared (NIR) electrochromic polymer films could be facilely generated on the ITO-glass surface by the electrochemical polymerization of DPPA-2SNS in an electrolyte solution. The electro-synthesized polymer films exhibit multi-staged redox processes and multi-colored anodic electrochromic behavior. A multi-colored electrochromism, with yellowish orange, greyish blue, and purplish black colors, was observed in the polymer film by applying a positive potential. The polymer films exhibit reasonable coloration efficiency, fast response time, and good cycling stability, especially when switched between neutral and the first oxidation states. For comparison, N-(1-pyrenyl)-2,5-di(2-thienyl)pyrrole (Py-SNS) was also prepared and characterized with electrochemical and electro-optical properties.

Electrochemical and electrochromic properties of bilayer polymer films prepared by electrochemical polymerization based on star-shaped thiophene derivatives

2019 ◽  
Vol 43 (24) ◽  
pp. 9566-9573 ◽  
Author(s):  
Shuanma Yan ◽  
Yujie Dong ◽  
Weijun Li ◽  
Lan Chen ◽  
Yuyu Dai ◽  
...  
Keyword(s):  
Charge Transport ◽  
Polymer Films ◽  
Electrochemical Polymerization ◽  
Switching Speed ◽  
Electrochromic Properties ◽  
Bilayer Films ◽  
Thiophene Derivatives

Electrochemical and EC properties of bilayer films prepared by electropolymerization prove that charge-transport has important effects on switching speed of materials.

Electrochemical polymerization: an emerging approach for fabricating high-quality luminescent films and super-resolution OLEDs

2020 ◽  
Vol 8 (16) ◽  
pp. 5310-5320 ◽  
Author(s):  
Manlin Zhao ◽  
Huanhuan Zhang ◽  
Cheng Gu ◽  
Yuguang Ma
Keyword(s):  
High Resolution ◽  
Conducting Polymer ◽  
Polymer Films ◽  
Electrochemical Polymerization ◽  
Super Resolution ◽  
High Quality ◽  
Luminescent Films ◽  
Conducting Polymer Films

Currently, the fabrication of high-resolution OLEDs has many limitations. Electrochemical polymerization is an efficient way to fabricate conducting polymer films.

Electrochemical Polymerization of 2-Chloroaniline and Characterization of the Obtained Polymer Films

2005 ◽  
Vol 54 (9) ◽  
pp. 815-834 ◽  
Author(s):  
S. M. Sayyah ◽  
S. M. Kamal ◽  
S. S. Abd EL-Rehim ◽  
M. A. Ibrahim
Keyword(s):  
Polymer Films ◽  
Electrochemical Polymerization

Syntheses and properties of carboranylpyrroles

2005 ◽  
Vol 09 (11) ◽  
pp. 803-810 ◽  
Author(s):  
J. Caleb Clark ◽  
Bruno Fabre ◽  
Frank R. Fronczek ◽  
M. Graça H. Vicente
Keyword(s):  
Thermal Stability ◽  
Conducting Polymer ◽  
Polymer Films ◽  
Pyrrole Ring ◽  
Electrochemical Polymerization ◽  
Experimental Conditions ◽  
X Ray ◽  
Synthetic Routes ◽  
Conducting Polymer Films

Synthetic routes to mono- and di-carboranylpyrroles (1-5) bearing the carborane groups linked either directly to the 3- and/or 4-positions of the pyrrole ring or via one or two methylene spacers are described. Several X-ray structures of key intermediates are presented and discussed. Carboranylpyrroles can be cyclotetramerized to afford carboranylporphyrins in low to moderate yields, depending on the number of carborane cages and their linkage to the pyrrole ring. The best yields of porphyrin were obtained with pyrrole 3, bearing a two carbon spacer between the carborane and pyrrole units. The electrochemical polymerization of pyrroles 2 and 3 gave functionalized conducting polymer films with increased overoxidation resistance and thermal stability compared with unsubstituted polypyrrole. Dicarboranylpyrrole 4 did not electropolymerize under a variety of experimental conditions, whereas pyrrole 5 formed only soluble oligomers.

scholarly journals Thin Functional Polymer Films by Electropolymerization

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1125 ◽  
Author(s):  
Alex Palma-Cando ◽  
Ibeth Rendón-Enríquez ◽  
Michael Tausch ◽  
Ullrich Scherf
Keyword(s):  
Glassy Carbon ◽  
Polymer Films ◽  
Electrochemical Polymerization ◽  
Polymer Networks ◽  
Carbon Electrodes ◽  
Thin Polymer Films ◽  
Electrochromic Devices ◽  
Glassy Carbon Electrodes ◽  
Chemistry Research ◽  
Thin Polymer

Intrinsically conducting polymers (ICPs) have been widely utilized in organic electronics, actuators, electrochromic devices, and sensors. Many potential applications demand the formation of thin polymer films, which can be generated by electrochemical polymerization. Electrochemical methods are quite powerful and versatile and can be utilized for investigation of ICPs, both for educational purposes and materials chemistry research. In this study, we show that potentiodynamic and potentiostatic techniques can be utilized for generating and characterizing thin polymer films under the context of educational chemistry research and state-of-the-art polymer research. First, two well-known bifunctional monomers (with only two linking sites)—aniline and bithiophene—and their respective ICPs—polyaniline (PANI) and polybithiophene (PBTh)—were electrochemically generated and characterized. Tests with simple electrochromic devices based on PANI and PBTh were carried out at different doping levels, where changes in the UV-VIS absorption spectra and color were ascribed to changes in the polymer structures. These experiments may attract students’ interest in the electrochemical polymerization of ICPs as doping/dedoping processes can be easily understood from observable color changes to the naked eye, as shown for the two polymers. Second, two new carbazole-based multifunctional monomers (with three or more linking sites)—tris(4-(carbazol-9-yl)phenyl)silanol (TPTCzSiOH) and tris(3,5-di(carbazol-9-yl)phenyl)silanol (TPHxCzSiOH)—were synthesized to produce thin films of cross-linked polymer networks by electropolymerization. These thin polymer films were characterized by electrochemical quartz crystal microbalance (EQCM) experiments and nitrogen sorption, and the results showed a microporous nature with high specific surface areas up to 930 m2g−1. PTPHxCzSiOH-modified glassy carbon electrodes showed an enhanced electrochemical response to nitrobenzene as prototypical nitroaromatic compound compared to unmodified glassy carbon electrodes.

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