Polymers containing disulfide, tetrasulfide, diselenide and ditelluride linkages in the main chain

Kishore, K.; Ganesh, Kannan

doi:10.1007/bfb0018579

Cited by 70 publications

(40 citation statements)

References 119 publications

(167 reference statements)

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“…Such chemical resistance is related to the high sulfur content in the polymer backbone imparting insolubility. 33 However, the heat resistance remains moderate, and the TGA trace [ Fig. S2(B) in…”

Section: Photoinduced Synthesis Of Poly(disulfide) Network Filmmentioning

confidence: 99%

Step‐growth thiol–thiol photopolymerization as radiation curing technology

Feillée

Fina

Ponche

et al. 2016

J. Polym. Sci. Part A: Polym. Chem.

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This report introduces a novel UV-curing technology based on thiol-thiol coupling for polydisulfide network formation. Beginning with a model tris(3-mercaptopropionate) trithiol monomer and xanthone propionic acid-protected guanidine as photobase generator, a comprehensive characterization based on spectroscopic techniques supports the reaction of thiols into disulfides without side reactions. The best experimental conditions are described as regards to film thickness, irradiance, emission wavelength, and atmosphere composition. The results shed light on a step-growth photopolymerization mechanism involving two steps: first, the formation of thiyl radicals by thiolate air oxidation or/and thiol photolysis, and second, their recombination into disulfide. By varying thiol V C 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 117-128.

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Section: Photoinduced Synthesis Of Poly(disulfide) Network Filmmentioning

confidence: 99%

Step‐growth thiol–thiol photopolymerization as radiation curing technology

Feillée

Fina

Ponche

et al. 2016

J. Polym. Sci. Part A: Polym. Chem.

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“…[22][23][24] The synthetic routes for diselenide-containing polymers include polycondensation of alkalidiselenides with dihalides, oxidation of diselenols, reduction of diseleninic acids, hydrolysis of alkanediselenocyanates, and ring opening polymerization of cyclic diselenide monomers, postmodifi cation of polymers, etc. [25][26][27] Our group has developed two novel strategies for the controlled synthesis of diselenidecontaining polymers with well-defi ned molecular weights and architectures: (i) diselenocarbonate-mediated controlled radical polymerization, aminolysis of the polymers and then spontaneous oxidation of selenol generated by aminolysis; [ 28,29 ] (ii) atom transfer radical polymerization followed by terminal halogen substitution with Na 2 Se 2 via nucleophilic attack. [ 30 ] By installing the multiresponsive diselenide group into the backbone of cyclic polymer, the topological transformation of diselenide-containing polymer is envisaged upon various stimuli to afford facile switches among several topologies.…”

Section: Introductionmentioning

confidence: 99%

Diselenide-Labeled Cyclic Polystyrene with Multiple Responses: Facile Synthesis, Tunable Size, and Topology

Cai

Gao

et al. 2016

Macromol. Rapid Commun.

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Diselenide-containing polymers have attracted more and more attention due to their redox sensitivity and bioapplication. In this work, a bifunctional diselenocarbonate is prepared and used to mediate the reversible addition-fragmentation chain transfer (RAFT) polymerization, producing α,ω-selenocarbonate-labeled telechelic polystyrene. Based on effective aminolysis of the terminal selenocarbonates and the followed spontaneous oxidation coupling reaction of diselenols, monoblock cyclic polystyrene linked by one diselenide bond and multiblock cyclic copolymer linked by several diselenide bonds are prepared by manipulating the concentration of α,ω-telechelic polystyrene in solution. The progress of aminolysis and the subsequent spontaneous oxidation of selenols to diselenides are monitored by UV-vis, gel permeation chromatography (GPC), and NMR characterizations, confirming the cyclic topologies of the resultant polymers (monocyclic or multiblock cyclic polymer). The monoblock cyclic or multiblock polymers show redox sensitivity, which can be converted to linear polymer by reducing or oxidizing agent. Moreover, the obtained monoblock cyclic polymer or multiblock cyclic copolymer can be transformed to each other under UV irradiation by adjusting the concentration of the cyclic polystyrene. For the first time, this work provides an alternative and promising approach to realize the topological transformation of polymers by installing multiresponsive diselenide moities into the backbone of cyclic polymer.

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“…Preparations of many polymers containing mono-, di-, tri-, or polysulfide bonds and their applications have been investigated by many scientists and engineers [1]. For example, poly(disulfide)s having disulfide bonds in their main or side chains showed many functions, such as self-sorting, building supramolecular systems [2].…”

Section: Introductionmentioning

confidence: 99%

Electrochemically active copolymers prepared from elemental sulfur and bis(alkenyl) compounds having crown ether unit

Yamabuki

Itaoka

Kim

et al. 2016

Polymer

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We prepared random copolymers from elemental sulfur (S) and bis(alkenyl) compound with crown ether (BUMB18C6). The resulted random copolymers, poly(S-r-BUMB18C6) were soluble in the organic solvents, tetrahydrofuran, N-methyl-2-pyrrolidone, and chloroform. The Ketjenblack (KB) and acetylene black (AB) particles were treated with the copolymer solution. TEM and EDS results of the treated carbon particles indicate that the incorporation of the copolymer into the KB cavities. The attachment of the copolymer to the AB particles was not observed, obviously. The copolymers in the KB particles showed the electrochemical responses based on the redox reaction of their polysulfide chains in organic electrolyte solution (1.0 mol dm-3 lithium bis(trifluoromethane)sulfonamide in 1:1 (v/v) mixture of 1,3-dioxolane and 1,2-dimethoxy-ethane). The lithium coin cells having the copolymer electrode were constructed and their charge-discharge behaviors were also tested under constant current conditions. Coulombic efficiency the test cells with poly(S-r-BUMB18C6-0.5)/KB electrode was over 95 % at 100th cycle and the average capacity through the 100 cycles was 286 Ah kg-1 .

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Polymers containing disulfide, tetrasulfide, diselenide and ditelluride linkages in the main chain

Cited by 70 publications

References 119 publications

Step‐growth thiol–thiol photopolymerization as radiation curing technology

Step‐growth thiol–thiol photopolymerization as radiation curing technology

Diselenide-Labeled Cyclic Polystyrene with Multiple Responses: Facile Synthesis, Tunable Size, and Topology

Electrochemically active copolymers prepared from elemental sulfur and bis(alkenyl) compounds having crown ether unit

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