Economical synthesis of functional aromatic polythioamides from KOH-assisted multicomponent polymerizations of sulfur, aromatic diamines and dialdehydes

Abstract

Polythioamides with fascinating properties such as unique metal ion coordination ability, excellent thermal stability, good solubility, high refractive index have attracted much attention recently, but their synthesis remains challenging, especially...

One-pot multicomponent polymerization towards heterocyclic polymers: a mini review

“…The MCP method was utilized to synthesize polythioamides, which are highly effective for gold extractions due to their excellent thermal stability, solubility, and high thin film-light refractivity. 71 As well, in a similar manner, MCP of benzoxazine–isocyanide and thioacetamide as a suitable sulfur source at room temperature (RT) generates phenolic linear polythioamides (PTAs). Further, during post-polymerization, polybenzoxazine was also modified to yield a thioamide segmented polymer.…”

Diverse Side-Chain Transformation of High Refractive Index Methylthio-Substituted Poly(phenylene sulfide)s

“…15 Among the various SCPs, our focus has been on the poly(phenylene sulfide) (PPS) family with side chains because of its high solubility, visible transparency, and high RI (n D ∼ 1.7−1.8) resulting from a high aromatic and sulfur content. 15 Notably, PPS with hydrogen bonds (H-bonds) 16,17 exhibits exceptional RI (above 1.8) along with significantly higher visible transparency and Abbe numbers (ν D ∼ 20) compared with other HRIPs, including poly(thioamide)s, 18,19 sulfur-rich polymers, 20,21 and sCVD-synthesized polymers. 22−24 Furthermore, PPS derivatives can undergo further functionalization via post-polymerization modification (PPM), enabling side chain and terminal transformations to enhance optical properties.…”

Base-Assisted Polymerizations of Elemental Sulfur and Alkynones for Temperature-Controlled Synthesis of Polythiophenes or Poly(1,4-dithiin)s

“…The poor solubility of sulfur in most organic solvents, its catalytic toxicity to metal catalysts, and the labile multiple redox states of sulfur have brought difficulties for the polymerization of sulfur to produce a well-defined polymer structure. A series of elemental sulfur-based polymerizations were developed to directly convert elemental sulfur to sulfur-containing functional polymers such as polythioamides, − polythioureas, , poly­( O -thiocarbamate)­s, and polydisulfides with well-defined structure, good solubility, high yield, and high molecular weight, providing great opportunity for sulfur utilization.…”