Block copolymers of thiophene-capped poly(methyl methacrylate) with pyrrole

Alkan, Selmi̇ye; Toppare, Levent; Hepuzer, Yeşi̇m; Yaǧcı, Yusuf

doi:10.1002/(sici)1099-0518(19991115)37:22<4218::aid-pola22>3.0.co;2-z

Cited by 82 publications

(50 citation statements)

References 17 publications

(5 reference statements)

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“…The optimum pH was shifted towards the alkaline side when compared with the free enzyme. This might be explained by the partitioning of protons [20].…”

Section: Ph Optimization Of Enzyme Electrodesmentioning

confidence: 99%

Immobilization of tyrosinase in polysiloxane/polypyrrole copolymer matrices

Arslan

Kiralp

Toppare

et al. 2005

International Journal of Biological Macromolecules

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Immobilization of tyrosinase in conducting copolymer matrices of pyrrole functionalized polydimethylsiloxane/polypyrrole (PDMS/PPy) was achieved by electrochemical polymerization. The polysiloxane/polypyrrole/tyrosinase electrode was constructed by the entrapment of enzyme in conducting matrices during electrochemical copolymerization. Maximum reaction rate (V(max)) and Michaelis-Menten constant (K(m)) were investigated for immobilized enzyme. Enzyme electrodes were prepared in two different electrolyte/solvent systems. The effect of supporting electrolytes, p-toluene sulfonic acid and sodium dodecyl sulfate on the enzyme activity and film morphology were determined. Temperature and pH optimization, operational stability and shelf-life of enzyme electrodes were also examined. Phenolic contents of green and black tea were determined by using enzyme electrodes.

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“…The optimum pH was shifted towards the alkaline side when compared with the free enzyme. This might be explained by the partitioning of protons [20].…”

Section: Ph Optimization Of Enzyme Electrodesmentioning

confidence: 99%

Immobilization of tyrosinase in polysiloxane/polypyrrole copolymer matrices

Arslan

Kiralp

Toppare

et al. 2005

International Journal of Biological Macromolecules

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“…It is possible to use a single batch of enzymes repetitively and stop the reaction by physical removal of immobilized enzyme from the solution. Also, high enzymatic activity in a small volume, longer life, predictable decay rate and elimination of reagent preparation are further advantages of enzyme immobilization [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Immobilization of glucose oxidase in conducting graft copolymers and determination of glucose amount in orange juices with enzyme electrodes

Yıldız

Kiralp

Toppare

et al. 2005

International Journal of Biological Macromolecules

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“…Previous efforts in this laboratory have focused on the development of the transformations involving combinations of radical systems with anionic, [7] activated monomer, [8,9] cationic, [10][11][12][13][14][15][16][17] and condensation polymerizations. [18][19][20] In some cases, [21][22][23]] the same polymerization mechanisms but different initiating systems were also employed. [24][25][26][27] The established controlled radical polymerization methods, namely atom transfer radical polymerization (ATRP), [28] reversible addition-fragmentation chain transfer polymerization (RAFT) [29,30], and nitroxidemediated radical polymerization [31] are extensively used in the transformation approach in combination with living ionic polymerization routes to form block copolymers with well-defined structures.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of polystyrene-b-poly(ethylene glycol) block copolymers by radical exchange reactions of terminal RAFT agents

Arslan

Yılmaz

Yaǧcı

2013

Designed Monomers and Polymers

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In this study, a mechanistic transformation was achieved by taking advantage of coupling reaction of reversible addition-fragmentation chain transfer (RAFT) agents. Polymers prepared by different polymerization modes were coupled to form polystyrene-b-poly(ethylene glycol) (PS-b-PEG) block copolymer. For this purpose, two prepolymers, namely azo and RAFT functional polymers were prepared independently. In the first step, a new macroazoinitiator (MI)-containing PEG units was synthesized by direct esterification of 4,4-azobis(4-cyanopentanoic acid) (ACPA) with poly(ethylene glycol) (PEG) at ambient conditions. The other component, polystyrene (PS) was synthesized by atom transfer radical polymerization and modified with a reversible addition-fragmentation chain transfer(RAFT) agent (xanthate moiety) and used as a polymeric RAFT agent for the block copolymer formation. In the block copolymerization process, polymeric radicals stemming from the thermolysis of PEG-MI were coupled with the RAFT moiety of PS. The PEG-MI, PS, PS-XANTH, and PS-PEG block copolymers were characterized by spectral analysis using FT-IR, 1 H NMR, GPC, and DSC.

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Block copolymers of thiophene-capped poly(methyl methacrylate) with pyrrole

Cited by 82 publications

References 17 publications

Immobilization of tyrosinase in polysiloxane/polypyrrole copolymer matrices

Immobilization of tyrosinase in polysiloxane/polypyrrole copolymer matrices

Immobilization of glucose oxidase in conducting graft copolymers and determination of glucose amount in orange juices with enzyme electrodes

Synthesis of polystyrene-b-poly(ethylene glycol) block copolymers by radical exchange reactions of terminal RAFT agents

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