[EN] SYNTHESIS OF TRITHIOCARBONATE RAFT GENTS AND INTERMEDIATES THEREOF [FR] SYNTHÈSE DES AGENTS DE MASSE DU TRITHIOCARBONATE ET DE LEURS SUBSTANCES INTERMÉDIAIRES
POLYMERIZABLE MONOMER, POLYMER COMPOUND FOR CONDUCTIVE POLYMER, AND METHOD FOR PRODUCING THE POLYMER COMPOUND
申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US20200247926A1
公开(公告)日:2020-08-06
Polymerization reaction is performed using a polymerizable monomer shown by the following general formula (1) and at least one monomer selected from monomers each having a structure of a salt among a lithium salt, a sodium salt, a potassium salt, and a nitrogen compound salt of a fluorosulfonic acid or the like; then, the structure of the salt of the repeating unit of a polymer obtained by the polymerization reaction is changed to the fluorosulfonic acid or the like by ion exchange. Thus, the present invention provides a polymer compound for a conductive polymer and a method for producing the polymer compound which is suitably used as a dopant for a fuel cell and a conductive material, and which is a copolymer containing a repeating unit of styrene having a 3,3,3-trifluoro-2-hydroxy-2-trifluoromethylisobutyl ether group, and a repeating unit having any of a fluorosulfonic acid, a fluorosulfonimide group, and a n-carbonyl-fluoro-sulfonamide group.
Facile preparation of bis(thiocarbonyl)disulfides via elimination
作者:Wolfgang G. Weber、James B. McLeary、Ron D. Sanderson
DOI:10.1016/j.tetlet.2006.04.031
日期:2006.7
preparation of bis(thiocarbonyl)disulfides is presented. The route follows an elimination mechanism rather than the more common oxidation. Addition of p-tosyl chloride to a thiocarbonyl thiolate results in the elimination of the chloride by the trithiocarbonate anion and subsequent elimination of the tosyl leaving group (by a second thiocarbonyl thiolate). The side products of the reaction are bis(4-methylphenyl)disulfone
Activating ATRP Initiators to Incorporate End-Group Modularity into Photo-RAFT Polymerization
作者:Karen Hakobyan、Christopher S. P. McErlean、Markus Müllner
DOI:10.1021/acs.macromol.0c01697
日期:2020.12.8
photocatalysis is increasingly used in reversibledeactivationradicalpolymerization (RDRP). In this study, we found that alkyl bromide redox chemistry typically found in atom transfer radicalpolymerization (ATRP) can be incorporated in concert with dithiocarbonyl disulfide chemistry into the reversible addition–fragmentation chain transfer (RAFT) process via bismuth oxide photocatalysis. This amalgamation
Synthesis of block and graft copolymers of styrene by raft polymerization, using dodecyl-based trithiocarbonates as initiators and chain transfer agents
reversible addition‐fragmentations chain transfer (RAFT) polymerization of styrene. The CTAs were used as initiators for RAFT polymerization, in the absence of the conventional free radical initiator, at higher temperature. Polystyrene (PS) of narrow polydispersity index (PDI) is synthesized. Subsequently, poly(styrene‐b‐benzyl methacrylate) diblock and poly(styrene‐b‐benzyl methacrylate‐b‐2‐vinyl pyridine)
成功地合成了一系列基于十二烷基的单官能三硫代碳酸酯链转移剂(CTA),以实现苯乙烯的可逆加成-断裂链转移(RAFT)聚合。在没有常规自由基引发剂的情况下,在较高的温度下,将CTA用作RAFT聚合的引发剂。合成了具有窄多分散指数(PDI)的聚苯乙烯(PS)。随后,聚(苯乙烯- b -苄基甲基丙烯酸酯)二嵌段和聚(苯乙烯- b -苄基丙烯酸甲酯- b由PS macro-RAFT试剂分别通过分别与第二种和第三种单体加热合成了2-乙烯基吡啶)三嵌段共聚物。这些实验表明,应该有可能通过调节聚合温度来控制由CTA引发的RAFT聚合,以使引发适应于传播(较低温度)而以更快的速率(在较高温度下)进行。 。对于这项工作中研究的特定CTAs,与其他研究的基团相比,在重新引发氰基(CN)取代的基团(R基团)的情况下,苯乙烯的聚合速率很高。结果进一步表明,4-氰基戊酸基团优于用于苯乙烯的RAFT聚合的其他R基团,
CO
<sub>2</sub>
‐Activated Reversible Transition between Polymersomes and Micelles with AIE Fluorescence
作者:Dapeng Zhang、Yujiao Fan、Hui Chen、Sylvain Trépout、Min‐Hui Li
DOI:10.1002/anie.201905089
日期:2019.7.22
and bright AIEpolymersomes were prepared by nanoprecipitation in THF/water and dioxane/water systems. Polymersomes of PEG45‐b‐P(DEAEMA36‐co‐TPEMA6) were chosen to study the CO2‐responsive property. Upon CO2 bubbling vesicles transformed to small spherical micelles, and upon Ar bubbling micelles returned to vesicles with the presence of a few intermediate morphologies. These polymersomes might have