Baral, Susil; Liu, Chunming; Chakraborty, Udit Kumar; Kubo, Kaori; Mao, Xianwen; Coates, Geoffrey W.; Chen, Peng published their research in Chem in 2021. The article was titled 《Single-chain polymerization dynamics and conformational mechanics of conjugated polymers》.Recommanded Product: 172222-30-9 The article contains the following contents:
Conjugated polymers possess unique optoelec. properties. Characterizing their synthesis and mech. processability is crucial for tailored applications. Their poor solubility presents a universal challenge, however. Here, we report a single-mol. study, which circumvents the solubility challenge, of the polymerization kinetics and conformational mechanics of polyacetylene, a prototypical conjugated polymer. We monitor the growth of individual long-chain polyacetylenes during ring-opening metathesis polymerization of cyclooctatetraene. We discover that polyacetylene forms nonequilibrium conformational entanglements, whose kinetic instability and structural looseness appear to render its polymerization more facile than that of polycyclooctene, a nonconjugated analog. This relative kinetics is contrary to monomer reactivity predictions. Moreover, even under identical solvent conditions, individual polyacetylenes show diverse extension-vs.-force scaling behaviors; many span multiple scaling regimes predicted previously but never observed The extracted persistence and Kuhn length of polyacetylene are also significantly shorter than its wavefunction delocalization length, indicating that polyacetylene can maintain backbone conjugation while staying flexible.Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9Recommanded Product: 172222-30-9) was used in this study.
Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9) is a ruthenium-based olefin metathesis catalyst. It is useful for olefin cross metathesis (CM) and ring closing metathesis (RCM) of terminal olefins under a variety of reactions conditions, and so on.Recommanded Product: 172222-30-9
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics