Synthesis and Characterization of Model Dumbbell Polymers

M. Rajan; P.V. Velthem; M. Zhang; D. Cho; T. Chang; U.S. Agarwal; C.M.E. Bailly; K.E. George; P.J. Lemstra

doi:10.1021/ma061926f

Synthesis and Characterization of Model Dumbbell Polymers

M. Rajan, P.V. Velthem, M. Zhang, D. Cho, T. Chang, U.S. Agarwal, C.M.E. Bailly, K.E. George, P.J. Lemstra

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

13 Citations (Scopus)

Abstract

High mol. wt. dumbbell shaped polymers were prepd. by atom transfer radical polymn. (ATRP) to grow branches from repeat units of end blocks of a sym. triblock copolymer. The triblock copolymer itself was prepd. by polymer-polymer coupling of a com. obtained a,w-end functionalized polystyrene as central block with end-functionalized poly(chloromethylstyrene) that we synthesized by nitroxide-mediated polymn. Temp. gradient interaction chromatog. (TGIC) enabled the estn. of the terminal hydroxyl functionality of the high mol. wt. a,w-difunctional polystyrene as 75%. Size exclusion chromatog. (SEC) and 1H NMR enabled the detn. of mol. wts. and verification of the structures of the intermediate and the cleaved products. Size exclusion chromatog. coupled with light scattering (SEC-LS) and scanning force microscopy (SFM) were used to confirm that the desired dumbbell architecture was obtained.

Original language	English
Pages (from-to)	3080-3089
Journal	Macromolecules
Volume	40
Issue number	9
DOIs	https://doi.org/10.1021/ma061926f
Publication status	Published - 2007

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title = "Synthesis and Characterization of Model Dumbbell Polymers",

abstract = "High mol. wt. dumbbell shaped polymers were prepd. by atom transfer radical polymn. (ATRP) to grow branches from repeat units of end blocks of a sym. triblock copolymer. The triblock copolymer itself was prepd. by polymer-polymer coupling of a com. obtained a,w-end functionalized polystyrene as central block with end-functionalized poly(chloromethylstyrene) that we synthesized by nitroxide-mediated polymn. Temp. gradient interaction chromatog. (TGIC) enabled the estn. of the terminal hydroxyl functionality of the high mol. wt. a,w-difunctional polystyrene as 75%. Size exclusion chromatog. (SEC) and 1H NMR enabled the detn. of mol. wts. and verification of the structures of the intermediate and the cleaved products. Size exclusion chromatog. coupled with light scattering (SEC-LS) and scanning force microscopy (SFM) were used to confirm that the desired dumbbell architecture was obtained.",

author = "M. Rajan and P.V. Velthem and M. Zhang and D. Cho and T. Chang and U.S. Agarwal and C.M.E. Bailly and K.E. George and P.J. Lemstra",

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T1 - Synthesis and Characterization of Model Dumbbell Polymers

AU - Rajan, M.

AU - Velthem, P.V.

AU - Zhang, M.

AU - Cho, D.

AU - Chang, T.

AU - Agarwal, U.S.

AU - Bailly, C.M.E.

AU - George, K.E.

AU - Lemstra, P.J.

PY - 2007

Y1 - 2007

N2 - High mol. wt. dumbbell shaped polymers were prepd. by atom transfer radical polymn. (ATRP) to grow branches from repeat units of end blocks of a sym. triblock copolymer. The triblock copolymer itself was prepd. by polymer-polymer coupling of a com. obtained a,w-end functionalized polystyrene as central block with end-functionalized poly(chloromethylstyrene) that we synthesized by nitroxide-mediated polymn. Temp. gradient interaction chromatog. (TGIC) enabled the estn. of the terminal hydroxyl functionality of the high mol. wt. a,w-difunctional polystyrene as 75%. Size exclusion chromatog. (SEC) and 1H NMR enabled the detn. of mol. wts. and verification of the structures of the intermediate and the cleaved products. Size exclusion chromatog. coupled with light scattering (SEC-LS) and scanning force microscopy (SFM) were used to confirm that the desired dumbbell architecture was obtained.

AB - High mol. wt. dumbbell shaped polymers were prepd. by atom transfer radical polymn. (ATRP) to grow branches from repeat units of end blocks of a sym. triblock copolymer. The triblock copolymer itself was prepd. by polymer-polymer coupling of a com. obtained a,w-end functionalized polystyrene as central block with end-functionalized poly(chloromethylstyrene) that we synthesized by nitroxide-mediated polymn. Temp. gradient interaction chromatog. (TGIC) enabled the estn. of the terminal hydroxyl functionality of the high mol. wt. a,w-difunctional polystyrene as 75%. Size exclusion chromatog. (SEC) and 1H NMR enabled the detn. of mol. wts. and verification of the structures of the intermediate and the cleaved products. Size exclusion chromatog. coupled with light scattering (SEC-LS) and scanning force microscopy (SFM) were used to confirm that the desired dumbbell architecture was obtained.

U2 - 10.1021/ma061926f

DO - 10.1021/ma061926f

M3 - Article

SN - 0024-9297

VL - 40

SP - 3080

EP - 3089

JO - Macromolecules

JF - Macromolecules

IS - 9

ER -

Synthesis and Characterization of Model Dumbbell Polymers

Abstract

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