Synthesis and Characterization of a Water-Soluble Conjugated Polymer from the Uncatalyzed Polymerization of Ethynylpyridine

2013 ◽  
Vol 328 (1) ◽  
pp. 20-24 ◽  
Author(s):  
Yeong-Soon Gal ◽  
Sung-Ho Jin
Keyword(s):  
Conjugated Polymer ◽  
Water Soluble ◽  
Synthesis And Characterization

scholarly journals Semi-Crystalline Hydrophobic Polyamidoamines: A New Family of Technological Materials?

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1018
Author(s):  
Massimo Marcioni ◽  
Jenny Alongi ◽  
Elisabetta Ranucci ◽  
Mario Malinconico ◽  
Paola Laurienzo ◽  
...  
Keyword(s):  
Maximum Stress ◽  
Water Resistance ◽  
Prolonged Exposure ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Molecular Weights ◽  
New Family ◽  
Methylene Groups ◽  
Methane Flame

The hitherto known polyamidoamines (PAAs) are not suitable as structural materials because they are usually water-soluble or swellable in water. This paper deals with the synthesis and characterization of semi-crystalline hydrophobic PAAs (H-PAAs) by combining different bis-sec-amines with bis-acrylamides obtained from C6–C12 bis-prim-amines. H-PAAs were initially obtained in a solution of benzyl alcohol, a solvent suitable for both monomers and polymers. Their number average molecular weights, M¯n, which were determined with 1H-NMR by evaluating the percentage of their terminal units, varied from 6000 to >10,000. The solubility, thermal properties, ignitability and water resistance of H-PAAs were determined. They were soluble in organic solvents, semi-crystalline and thermally stable. The most promising ones were also prepared using a bulk process, which has never been previously reported for PAA synthesis. In the form of films, these H-PAAs were apparently unaffected by water. The films underwent tensile and wettability tests. They showed similar Young moduli (260–263 MPa), whereas the maximum stress and the stress at break depended on the number of methylene groups of the starting bis-acrylamides. Their wettability was somewhat higher than that of common Nylons. Interestingly, none of the H-PAAs considered, either as films or powders, ignited after prolonged exposure to a methane flame.

scholarly journals Synthesis and characterization of an electron-deficient conjugated polymer based on pyridine-flanked diketopyrrolopyrrole

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12995-13003
Author(s):  
Jialin Yang ◽  
Li Yang ◽  
Qianqian Chen ◽  
Keke Guo ◽  
Ji-Min Han
Keyword(s):  
Conjugated Polymers ◽  
Electrochemical Properties ◽  
Conjugated Polymer ◽  
Synthesis And Characterization

We report a pyridine-flanked diketopyrrolopyrrole monomer and all-acceptor conjugated polymers synthesized therefrom. Photophysical, thermal and electrochemical properties of the polymers have been determined.

Synthesis and Characterization of a New Donor–Acceptor Conjugated Polymer and Polymer∕Ag Nanocomposites

2011 ◽  
Author(s):  
M. G. Murali ◽  
D. Udayakumar ◽  
P. Predeep ◽  
Mrinal Thakur ◽  
M. K. Ravi Varma
Keyword(s):  
Conjugated Polymer ◽  
Synthesis And Characterization ◽  
Donor Acceptor

Synthesis and Characterization of Water-Soluble Monolayer-Protected Gold Nanoparticles

2011 ◽  
Vol 415-417 ◽  
pp. 617-620 ◽  
Author(s):  
Yan Su ◽  
Ying Yun Lin ◽  
Yu Li Fu ◽  
Fan Qian ◽  
Xiu Pei Yang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Particle Size ◽  
Gold Nanoparticles ◽  
Average Particle Size ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Average Particle ◽  
Transmission Electron

Water-soluble gold nanoparticles (AuNPs) were prepared using 2-mercapto-4-methyl-5- thiazoleacetic acid (MMTA) as a stabilizing agent and sodium borohydride (NaBH4) as a reducing agent. The AuNPs product was analyzed by transmission electron microscopy (TEM), UV-vis absorption spectroscopy and Fourier transform infrared spectroscopy (FTIR). The TEM image shows that the particles were well-dispersed and their average particle size is about 5 nm. The UV-vis absorption and FTIR spectra confirm that the MMTA-AuNPs was stabilized by the carboxylate ions present on the surface of the AuNPs.

scholarly journals Synthesis and Characterization of Novel Conjugated Polymer with 4H-Cyclopenta[def]phenanthrene and the Sulfanyl Group

2009 ◽  
Vol 41 (2) ◽  
pp. 138-145 ◽  
Author(s):  
Suhee Song ◽  
Youngeup Jin ◽  
Sun Hee Kim ◽  
Joo Hyun Kim ◽  
Kwanghee Lee ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Synthesis And Characterization

Synthesis and characterization of a new water-soluble endohedral metallofullerene for MRI contrast agents

Carbon ◽  
2006 ◽  
Vol 44 (3) ◽  
pp. 496-500 ◽  
Author(s):  
Chun-Ying Shu ◽  
Li-Hua Gan ◽  
Chun-Ru Wang ◽  
Xin-long Pei ◽  
Hong-bin Han
Keyword(s):  
Contrast Agents ◽  
Mri Contrast Agents ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Mri Contrast ◽  
Endohedral Metallofullerene

scholarly journals Synthesis and Characterization of a Multifunctional Conjugated Polymer

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Emerson C. G. Campos ◽  
Cristiano Zanlorenzi ◽  
Bruno F. Nowacki ◽  
Gabriela M. Miranda ◽  
Denis A. Turchetti ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Molar Mass ◽  
Photophysical Properties ◽  
Gel Permeation Chromatography ◽  
Thermal Characterization ◽  
Polymer Structure ◽  
Synthesis And Characterization ◽  
Metallic Ions ◽  
Scanning Calorimetry

This work reports the synthesis and characterization of a conjugated polymer based on fluorene and terpyridine, namely, poly[(9,9-bis(3-((S)-2-methylbutylpropanoate))fluorene-alt-6,6′-(2,2′:6′,2′′-terpyridin-6-yl)] (LaPPS71). The structure was characterized by 1H and 13C nuclear magnetic resonance (NMR) and Fourier-transform infrared (FTIR) spectroscopy. The molar mass was measured by gel permeation chromatography (GPC). As thermal characterization, the glass transition temperature (Tg) was measured by differential scanning calorimetry (DSC). The polymer structure contains two sites capable of complexation with metallic ions, affording the possibility of obtainment of independent or electronically coupled properties, depending on the complexation site. The photophysical properties were fully explored in solution and solid state, presenting ideal results for the preparation of various metallopolymers, in addition to potential application as a metamaterial, due to the presence of the chiral center in the side chains of the polymer.

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