Facile synthesis of oxidative copolymers from aminoquinoline and anisidine

Li, Xin‐Gui; Huang, Mei‐Rong; Yang, Hua; Zhu, Meifang; Chen, Qun

doi:10.1016/j.polymer.2004.04.032

Cited by 13 publications

(13 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Althought, the synthesis and characterization of quinolone copolymers, blends and composites are studied widely, the synthesis and the properties of quinolone homopolymers have been less investigated (2,4). Ragimov and co-workers studied the oxidative polymerization of 8-hydroxy quinoline in alkaline medium in the presence of air oxygen.…”

Section: Introductionmentioning

confidence: 99%

Enzymatic synthesis of 5-amino quinoline oligomers and evaluation of their free radical scavenging activity

2017

View full text Add to dashboard Cite

The compound 5-aminoquinoline (AQ) was treated with horseradish peroxidase (HRP) and H2O2 in a reaction medium containing a dioxane:phosphate buffer mixture (70:30). Products (OAQ) with a degree of polymerization ranging from 4 to 12 were obtained. 1H NMR, FTIR, UV–vis, SEM, TG–DTA, DSC, XRD analysis, and conductivity measurements were conducted for characterization of OAQ. Compared with a monomer, OAQ showed higher thermal stability. After heating to 1000 °C, 46% of the initial weight of the OAQ remained. The antioxidant efficiencies of the monomer and oligomer were evaluated by the typical spectrophotometric method such as the bleaching of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals. OAQ showed improved DPPH activity compared with the AQ monomer.

show abstract

Section: Introductionmentioning

confidence: 99%

Enzymatic synthesis of 5-amino quinoline oligomers and evaluation of their free radical scavenging activity

2017

View full text Add to dashboard Cite

show abstract

“…As a typical derivative of aniline, o-anisidine (OA) is often used to copolymerize with other aromatic monomers to increase the solubility and processability. [6][7][8][9] Several methods have been described to improve the processibility of conducting polymers. 10,11 One of the approaches to improve the physical property of the electrically conducting polymers is to convert them into composite systems with common polymers, thus combining the desirable properties of both the polymers.…”

mentioning

confidence: 99%

Microstructure and Thermal Behavior of Poly(o-anisidine)/Poly(ethylene terephthalate) Composite

Santhosh

Gopalan

Sankarasubramanian

et al. 2005

Polym J

View full text Add to dashboard Cite

ABSTRACT:Poly(o-anisidine)-Poly(ethylene terephthalate) composite film was prepared by chemical oxidative polymerization method. The composite film shows a conductivity of about 15.6 K À1 cm À1 with 3.5 wt. % of POA. Fourier Transform infra-red (FT-IR) and UV-vis spectral analyses reveal the existence of hydrogen bonding interactions between the groups in PET and POA. X-Ray diffraction analysis informs that the amorphous characteristic of PET is affected by the presence of POA in the composite. UV-vis spectral results demonstrate that there exists cross-linking in the composite film when the POA in the composite undergoes doping and dedoping. AFM micrographs confirm the formation of genuine composite between POA and PET.

show abstract

“…[19] After doped by 1 m HCl aqueous solution for 48 h, the conductivity of the redoped salts of the copolymer particles remarkably increases up to between 10 À7 and 10 À5 S cm À1 . [20] In particular, the AQ/EA (10:90) copolymer exhibits the sharp- est conductivity rise and also the maximal conductivity in the six AQ/EA polymers upon redoping, [17] because of its highest molecular weight (see also Table 1). This phenomenon indicates that the conductivity of redoped copolymers is mainly determined by the doping state and molecular weight.…”

Section: Full Papermentioning

confidence: 98%

“…Furthermore, the quinoline ring with higher electron density than EA benzene ring is more easily attacked by the radical cation, resulting in an easier electrophilic aromatic substitution. Both of the factors induce a largely increased AQ content in the copolymer compared to AQ feed content [17] and an enlarged degree of polymerization. The degree of polymerization rises first and then reduces with an increase in AQ content.…”

Section: Full Papermentioning

confidence: 99%

“…This means that the copolymers formed by the oxidative copolymerization are genuine copolymers containing both AQ and EA units rather than a mixture of two respective homopolymers. [17] A significant variation of the AQ/EA copolymer solution color with the solvents is testified, that is, a unique solvatochromic behavior. It is seen from Table 3 that the copolymer solution displays different colors in various solvents.…”

Section: Solubility and Solvatochromism Of The Aq/ea Copolymersmentioning

confidence: 99%

See 1 more Smart Citation

Simple Synthesis of Aminoquinoline/Ethylaniline Copolymer Semiconducting Nanoparticles

Yang

Huang

2005

Chemistry A European J

Self Cite

View full text Add to dashboard Cite

Pure copolymer nanoparticles from 8-aminoquinoline (AQ) and 2-ethylaniline (EA) were easily synthesized by a chemically oxidative polymerization in three different aqueous media. The potential and temperature of polymerization solution were used to successfully follow the polymerization progress. The molecular and morphological structures of the resulting AQ/EA copolymer particles were systematically characterized by IR, UV/Vis, NMR, gel permeation chromatography, laser particle-size analysis, atomic force and transmission electron microscopy. The oxidation potential of the monomers as well as the polymerization yield, structure, and properties of the particles were found to significantly depend on AQ/EA ratio, polymerization temperature and medium. It is surprisingly found that AQ homopolymerization and AQ/EA (50:50) copolymerization at 5 degrees C in HCl simply afford nano-ellipsoids with the major/minor axis diameters of 24/14 nm and 80/67 nm, respectively. A simple method of synthesizing semiconducting pure nanoparticles by introducing the AQ units with positively charged quaternary ammonium groups but in the absence of adscititious stabilizer or sulfonic substituent on the monomers is established first. Both the molecular weight and bulk electroconductivity of the copolymers exhibit a maximum at AQ content of 10 mol %. The solubility and film formability of the copolymers are good in highly polar solvents and reach the optimal at the AQ content of 20 and 10 mol %, respectively.

show abstract

Facile synthesis of oxidative copolymers from aminoquinoline and anisidine

Cited by 13 publications

References 26 publications

Enzymatic synthesis of 5-amino quinoline oligomers and evaluation of their free radical scavenging activity

Enzymatic synthesis of 5-amino quinoline oligomers and evaluation of their free radical scavenging activity

Microstructure and Thermal Behavior of Poly(o-anisidine)/Poly(ethylene terephthalate) Composite

Simple Synthesis of Aminoquinoline/Ethylaniline Copolymer Semiconducting Nanoparticles

Contact Info

Product

Resources

About