Transition behavior of hydrogen-bonding-mediated block copolymer mixtures

Sudhakar Naidu, Hyungju Ahn, Hoyeon Lee, Young Mee Jung, Du Yeol Ryu

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We have investigated transition behavior for block copolymer (BCP) mixtures composed of a lamella-forming polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) and phenylacetamide derivatives, where the hydroxyl functionality at phenylacetamide unit is available only for 4-hydroxyphenylacetamide (HPA) and not for phenylacetamide (PA). Unlike a similar transition temperature for BCP mixtures with PA, measured by in situ small-angle X-ray scattering (SAXS) and depolarized light scattering (DPLS), an annealing temperature dependence for BCP mixtures with HPA indicates that only the complex by H-bonding mediation between the nitrogen units of P2VP block and hydroxyl group in the HPA enhances nonfavorable segmental interactions between two block components, leading to a significant increase in d-spacing for BCP mixtures with HPA. This result illustrates the importance of the availability for H-bonding mediation to control over transition behavior for BCP mixtures with the functional molecules.

Original languageEnglish
Pages (from-to)6120-6126
Number of pages7
JournalMacromolecules
Volume43
Issue number14
DOIs
Publication statusPublished - 2010 Jul 27

Fingerprint

Block copolymers
Hydrogen bonds
Hydroxyl Radical
X ray scattering
Light scattering
Superconducting transition temperature
Polystyrenes
Nitrogen
Availability
Annealing
Derivatives
Molecules
Temperature

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Naidu, Sudhakar ; Ahn, Hyungju ; Lee, Hoyeon ; Jung, Young Mee ; Ryu, Du Yeol. / Transition behavior of hydrogen-bonding-mediated block copolymer mixtures. In: Macromolecules. 2010 ; Vol. 43, No. 14. pp. 6120-6126.
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Transition behavior of hydrogen-bonding-mediated block copolymer mixtures. / Naidu, Sudhakar; Ahn, Hyungju; Lee, Hoyeon; Jung, Young Mee; Ryu, Du Yeol.

In: Macromolecules, Vol. 43, No. 14, 27.07.2010, p. 6120-6126.

Research output: Contribution to journalArticle

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AB - We have investigated transition behavior for block copolymer (BCP) mixtures composed of a lamella-forming polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) and phenylacetamide derivatives, where the hydroxyl functionality at phenylacetamide unit is available only for 4-hydroxyphenylacetamide (HPA) and not for phenylacetamide (PA). Unlike a similar transition temperature for BCP mixtures with PA, measured by in situ small-angle X-ray scattering (SAXS) and depolarized light scattering (DPLS), an annealing temperature dependence for BCP mixtures with HPA indicates that only the complex by H-bonding mediation between the nitrogen units of P2VP block and hydroxyl group in the HPA enhances nonfavorable segmental interactions between two block components, leading to a significant increase in d-spacing for BCP mixtures with HPA. This result illustrates the importance of the availability for H-bonding mediation to control over transition behavior for BCP mixtures with the functional molecules.

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