Abstract:Among the sulfur-containing polymers, polythioethers remains very attractive structures due to their high sulfur atom content, making them interesting candidates for various industrial applications, for example in the fields of energy storage or biomedical applications.Although anionic ring-opening polymerization of episulfides is known since decades, only a limited number of efficient initiating systems enable the synthesis of well-defined polymer chains. In this work, a one-pot, two step method was developed… Show more
“…Polymerization experiments focused on the anionic ROP of thiirane derivatives revealed that simple and diverse nucleophiles can be utilized as initiators. 73 In particular, thiolate species derived from thiols have been demonstrated as promising initiators for the ROP of propylene sulfide (M34) (Scheme 15a), resulting in pure regiochemical regulation (i.e., head-to-tail microstructure) within the polymer backbone. [74][75][76] Interestingly, anionic ROP initiated by thiolates has been demonstrated to follow first order kinetics, hence possessing 'living' character.…”
Inspired by the uniqueness of ring-opening polymerization and the ubiquity of sulfur-containing heterocycles, much attention has been paid to the synthesis of sulfur-containing polymers as they can provide novel materials...
“…Polymerization experiments focused on the anionic ROP of thiirane derivatives revealed that simple and diverse nucleophiles can be utilized as initiators. 73 In particular, thiolate species derived from thiols have been demonstrated as promising initiators for the ROP of propylene sulfide (M34) (Scheme 15a), resulting in pure regiochemical regulation (i.e., head-to-tail microstructure) within the polymer backbone. [74][75][76] Interestingly, anionic ROP initiated by thiolates has been demonstrated to follow first order kinetics, hence possessing 'living' character.…”
Inspired by the uniqueness of ring-opening polymerization and the ubiquity of sulfur-containing heterocycles, much attention has been paid to the synthesis of sulfur-containing polymers as they can provide novel materials...
“…Very recently, BTL was used to introduce an ester linker between an hydroxy initiating compound and a polythioether chain. 66…”
Section: Thiolactone As a Thiolation Agentmentioning
confidence: 99%
“…Very recently, BTL was used to introduce an ester linker between an hydroxy initiating compound and a polythioether chain. 66 The group of Albertson studied the thiolation of hemicellulose using γ-thiobutyrolactone. 70 In the absence of a catalyst, hemicellulose hydroxyl groups are not sufficiently strong to undergo the 1,2-nucleophilic addition leading to the ringopening of the thiolactone ring.…”
Section: Bii Reaction Between Thiolactone and Alcohol-bearing Macromo...mentioning
confidence: 99%
“…3 AROP of propylene sulfide initiated using benzyl amine/BTL as initiating system in the presence of BEMP superbase. 66 Fig. 4 CALB-catalyzed caprolactone polymerization and subsequent thiolation with BTL.…”
Section: Introduction Of Thiolactone Functional Group On Macromoleculesmentioning
confidence: 99%
“…Figure3. AROP of propylene sulfide initiated using benzyl amine / BTL as initiating system in the presence of BEMP superbase 66. …”
Thiolactones are often described as latent thiols. They can be ring-opened by hydroxy or amine groups releasing thiols, which can further react with a large variety of functional groups. Based...
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