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Cylindrical polymer brushes with elastin-like polypeptide side chains

Publication ,  Journal Article
Weller, D; McDaniel, JR; Fischer, K; Chilkoti, A; Schmidt, M
Published in: Macromolecules
June 25, 2013

Monodisperse high molar mass elastin-like polypeptide macromonomers comprising 20 pentasequences (M = 8332 g/mol) were radically polymerized to high degrees of polymerization Pw = 590. Polymerization was conducted in water well above the lower phase transition temperature, i.e., in the phase separated regime. The resulting polymers adopt a cylindrical shape as demonstrated by AFM pictures of solutions spin-cast on mica. The directional persistence of the cylindrical brushes was determined by static light scattering to Kuhn statistical segments lengths lk = 120 nm at 5 mM aqueous NaCl solution which decreased to lk = 54 nm at 0.65 M NaCl. Upon polymerization the phase transition temperature drops significantly and the transition interval becomes sharper. The change of the hydrodynamic radius of the cylindrical brushes was monitored by dynamic light scattering as a function of temperature and revealed a continuous decrease from 20 to 36 C, above of which aggregates of several hundred nm in size start to form prior to phase separation. © 2013 American Chemical Society.

Duke Scholars

Published In

Macromolecules

DOI

EISSN

1520-5835

ISSN

0024-9297

Publication Date

June 25, 2013

Volume

46

Issue

12

Start / End Page

4966 / 4971

Related Subject Headings

  • Polymers
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences
 

Citation

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Weller, D., McDaniel, J. R., Fischer, K., Chilkoti, A., & Schmidt, M. (2013). Cylindrical polymer brushes with elastin-like polypeptide side chains. Macromolecules, 46(12), 4966–4971. https://doi.org/10.1021/ma400917t
Weller, D., J. R. McDaniel, K. Fischer, A. Chilkoti, and M. Schmidt. “Cylindrical polymer brushes with elastin-like polypeptide side chains.” Macromolecules 46, no. 12 (June 25, 2013): 4966–71. https://doi.org/10.1021/ma400917t.
Weller D, McDaniel JR, Fischer K, Chilkoti A, Schmidt M. Cylindrical polymer brushes with elastin-like polypeptide side chains. Macromolecules. 2013 Jun 25;46(12):4966–71.
Weller, D., et al. “Cylindrical polymer brushes with elastin-like polypeptide side chains.” Macromolecules, vol. 46, no. 12, June 2013, pp. 4966–71. Scopus, doi:10.1021/ma400917t.
Weller D, McDaniel JR, Fischer K, Chilkoti A, Schmidt M. Cylindrical polymer brushes with elastin-like polypeptide side chains. Macromolecules. 2013 Jun 25;46(12):4966–4971.
Journal cover image

Published In

Macromolecules

DOI

EISSN

1520-5835

ISSN

0024-9297

Publication Date

June 25, 2013

Volume

46

Issue

12

Start / End Page

4966 / 4971

Related Subject Headings

  • Polymers
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences