Substituted Polyacetylenes: Synthesis, Properties, and Functions

Abstract

This perspective briefly introduces the status quo of various aspects of research on substituted polyacetylenes along with representative references. The research field of substituted polyacetylenes includes polymer design, polymer synthesis, polymer structure and properties, and polymer functions. Developments of well-defined catalysts and unique precision structures of polymers are challenging subjects in polymer design and synthesis. Elucidation of unique properties of substituted polyacetylenes has long drawn much attention and is closely related to their optoelectronic and stimuli-responsive functions under intensive research. This special issue features relatively short review articles of the cutting-edge research of substituted polyacetylenes by experts of the fields.

Hyper‐Cross‐Linked Polyacetylene‐Type Microporous Networks Decorated with Terminal Ethynyl Groups as Heterogeneous Acid Catalysts for Acetalization and Esterification Reactions

“…Chain-growth polymerization of alkynes with one ethynyl group per monomer molecule catalyzed by Rh-, W-, or Mo-based catalysts yielding the linear substituted polyacetylenes has been used for several decades. [28,29] The ethynyl groups of the monomer molecules are transformed into polyene (polyacetylene)-type conjugated main chains in this polymerization (see Scheme 1d epicting the polymerization of phenylacetylene to linear poly(phenylacetylene)). Recently,w e found that Rh I catalysts also polymerizedd iethynylarenes (diethynylbenzenes and 4,4'-diethynylbiphenyl), [24][25][26] and mixtures of diethynylarenes with monoethynylarenes.…”

Synthesis of poly(phenylacetylene)s containing chiral phenylethyl carbamate residues as coated‐type CSPs with high solvent tolerability

“…This technique is based on the chiral recognition ability of chiral stationary phases (CSPs) . In spite of polysaccharide‐based CSPs that showed good chiral separation abilities for varies of enantiomers, synthetic helical polymers, especially poly(phenylacetylene) derivatives, have also been widely investigated by researchers around the world because of their specific architectures …”

Synthesis of Polyacethylenes and Polysaccharides by Mushroom Ganoderma Lucidum (Curtis) P. Karst and Pleurotus Ostreatus (Jacq.) P. Kumm

“…From scientific and applied approaches, this direction is perspective one. Therefore, the development of effective methods of polyacetylen compounds synthesis [5] based on available raw products is an actual task.…”