Polythioamides
WebSulfur-containing polymers have renewed widespread attention due to their fascinating properties like high refractive index and semiconducting character. However, examples of … WebT1 - Preparation of polythioamides and their metal adsorption properties. AU - Kanbara, Takaki. AU - Kagaya, Shigehiro. PY - 2006. Y1 - 2006. N2 - Willgerodt-Kindler type polycondensation of dialdehydes and diamines in the presence of sulfur afforded polythioamides.
Polythioamides
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WebNov 20, 2024 · In this work, six hyperbranched polythioamides with various topological structures, well-defined repeating units, satisfying yields (up to 99%), and high molecular … WebFeb 8, 2024 · Through the design of a pyridine-activated diyne monomer, the catalyst-free multicomponent polymerizations of sulfur, aromatic alkyne, and a group of commercially available primary and secondary diamines were realized at room temperature or 40 °C, affording functional polythioamides with well-defined structures, high yields (up to 98%), …
WebOct 1, 1998 · The polythioamides 6a–f structures are confirmed by 13 C n.m.r. shifts at ca. 196 ppm related to the thioamide functions. No dithioester thiocarbonyl signal (from some eventually remaining dithioester) could be observed near 228 ppm.All polythioamides show characteristic i.r. absorption for the thioamide group: ν (KBr) at 3210 and 1530 cm −1. WebPolythioamides by Room-Temperature Polycondensation Kohei SANUI, Yasushi KISHIMOTO, and Naoya OGATA Department of Chemistry, Faculty Science and Technology, Sophia ...
WebDec 22, 2024 · The production of elemental sulfur from petroleum refining has created a technological opportunity to increase the valorization of elemental sulfur by the synthesis of high-performance sulfur-based plastics with improved optical, electrochemical, and mechanical properties aimed at applications in thermal imaging, energy storage, self … WebPreparation of other polythioamides was carried out analogously. Preparation of Model Compound Model compound of PTA-1, 1,19-bis(benzthioyl)-4,49-tri-methylenedipiperidine …
WebDec 16, 2024 · These polythioamides can be applied in gold recovery, which could extract a trace amount of Au 3+ from practical acidic leaching solution of discarded electronic …
WebApr 7, 2024 · Nonribosomal peptides (NRPs) are a vast class of natural products and an important source of therapeutics. Typically, these secondary metabolites are assembled … grainy fontWebThe two polythioamides were synthesized via the Willgerodt–Kinder type reaction according to Kanbara et al. 13 In Fig. 7, solution 13 C NMR spectra of PTA2T and PTA3T are compared with those of the model compounds, and the observed peaks are assigned as indicated. grainy feeling under tongueWebObjectives: The spread of MDR bacteria represents a serious threat to human society and novel antibiotic drugs, preferably from new chemical classes, are urgently needed. Closthioamide was isolated from the strictly anaerobic bacterium Clostridium cellulolyticum and belongs to a new class of natural products, the polythioamides. grainy fingernailsWebThe aim of the present study was to design and synthesis a novel monomer to produce polyurethanes with improved thermal stability as well as good solubility. Herein, N1,N3-bis(5-hydroxynaphthalene-... grainy film filterWebThe two polythioamides were synthesized via the Willgerodt–Kinder type reaction according to Kanbara et al. 13 In Fig. 7, solution 13 C NMR spectra of PTA2T and PTA3T are … grainy edibleWebMar 15, 2010 · The potential and feasibility of polythioamides as Hg(II) sorbents were evaluated. Powdered polythioamides quantitatively sorbed Hg(II) from an aqueous solution at pH 1-8. The sorption of Hg(II) on polythioamides obeyed the Langmuir adsorption isotherm; the sorption capacity was 0.70-0.85 g-Hgg(-1). … china ofac sanctionsWebFeb 18, 2013 · Polythioamides were synthesized by the Willgerodt-Kindler polycondensation reaction using dialdehydes, 4,4′-trimethylenedipiperidine, and sulfur. china offer echo ye