A2B2 type miktoarm star copolymers via alkyne homocoupling reaction

Eda Gungor; Gurkan Hizal; Umit Tunca

doi:10.1002/pola.22977

A₂B₂ type miktoarm star copolymers via alkyne homocoupling reaction

Eda Gungor, Gurkan Hizal, Umit Tunca^*

^*Corresponding author for this work

Department of Chemistry

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

The terminal alkyne homocoupling reaction (oxidative alkyne coupling) is presented here as a new route for the preparation of A₂B₂ type 4-miktoarm star copolymer. The block copolymer with terminal alkyne at the junction point prepared by NMP-ATRP and ROP-NMP sequential routes is coupled via diyne formation to give (PS)₂-(PMMA)₂ and (PCL) ₂-(PS)₂ 4-miktoarm star polymers, respectively, by using a combination of (PPh₃)₂PdCl₂/PPh ₃/CuI in a solvent mixture of Et₃N/CH₃CN at room temperature for 72 h. The molecular weight, intrinsic viscosity ([η]), radius of gyration (R_g), and hydrodynamic radius (R_h) of A₂B₂ 4-miktoarm star copolymers were calculated using triple-detection GPC as results of three detectors response.

Original language	English
Pages (from-to)	6703-6711
Number of pages	9
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	46
Issue number	20
DOIs	https://doi.org/10.1002/pola.22977
Publication status	Published - 15 Oct 2008

Keywords

Alkyne homocoupling reaction
Atom transfer radical polymerization
Living polymerization
Miktoarm star polymers
Nitroxide mediated radical polymerization
Ring opening polymerization

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10.1002/pola.22977

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title = "A2B2 type miktoarm star copolymers via alkyne homocoupling reaction",

abstract = "The terminal alkyne homocoupling reaction (oxidative alkyne coupling) is presented here as a new route for the preparation of A2B2 type 4-miktoarm star copolymer. The block copolymer with terminal alkyne at the junction point prepared by NMP-ATRP and ROP-NMP sequential routes is coupled via diyne formation to give (PS)2-(PMMA)2 and (PCL) 2-(PS)2 4-miktoarm star polymers, respectively, by using a combination of (PPh3)2PdCl2/PPh 3/CuI in a solvent mixture of Et3N/CH3CN at room temperature for 72 h. The molecular weight, intrinsic viscosity ([η]), radius of gyration (Rg), and hydrodynamic radius (Rh) of A2B2 4-miktoarm star copolymers were calculated using triple-detection GPC as results of three detectors response.",

keywords = "Alkyne homocoupling reaction, Atom transfer radical polymerization, Living polymerization, Miktoarm star polymers, Nitroxide mediated radical polymerization, Ring opening polymerization",

author = "Eda Gungor and Gurkan Hizal and Umit Tunca",

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doi = "10.1002/pola.22977",

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AU - Gungor, Eda

AU - Hizal, Gurkan

AU - Tunca, Umit

PY - 2008/10/15

Y1 - 2008/10/15

N2 - The terminal alkyne homocoupling reaction (oxidative alkyne coupling) is presented here as a new route for the preparation of A2B2 type 4-miktoarm star copolymer. The block copolymer with terminal alkyne at the junction point prepared by NMP-ATRP and ROP-NMP sequential routes is coupled via diyne formation to give (PS)2-(PMMA)2 and (PCL) 2-(PS)2 4-miktoarm star polymers, respectively, by using a combination of (PPh3)2PdCl2/PPh 3/CuI in a solvent mixture of Et3N/CH3CN at room temperature for 72 h. The molecular weight, intrinsic viscosity ([η]), radius of gyration (Rg), and hydrodynamic radius (Rh) of A2B2 4-miktoarm star copolymers were calculated using triple-detection GPC as results of three detectors response.

AB - The terminal alkyne homocoupling reaction (oxidative alkyne coupling) is presented here as a new route for the preparation of A2B2 type 4-miktoarm star copolymer. The block copolymer with terminal alkyne at the junction point prepared by NMP-ATRP and ROP-NMP sequential routes is coupled via diyne formation to give (PS)2-(PMMA)2 and (PCL) 2-(PS)2 4-miktoarm star polymers, respectively, by using a combination of (PPh3)2PdCl2/PPh 3/CuI in a solvent mixture of Et3N/CH3CN at room temperature for 72 h. The molecular weight, intrinsic viscosity ([η]), radius of gyration (Rg), and hydrodynamic radius (Rh) of A2B2 4-miktoarm star copolymers were calculated using triple-detection GPC as results of three detectors response.

KW - Alkyne homocoupling reaction

KW - Atom transfer radical polymerization

KW - Living polymerization

KW - Miktoarm star polymers

KW - Nitroxide mediated radical polymerization

KW - Ring opening polymerization

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JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

IS - 20

ER -

A₂B₂ type miktoarm star copolymers via alkyne homocoupling reaction

Abstract

Keywords

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