Accessibility of responsive end-caps in films composed of stimuli-responsive, depolymerizable poly(phthalaldehydes)

Anthony M. Dilauro, Hua Zhang, Matthew S. Baker, Flory Wong, Ayusman Sen, Scott T. Phillips

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Polymers that are capable of depolymerizing completely from head-to-tail upon cleavage of an end-cap from the terminus of the polymer have emerged recently as a new strategy for creating stimuli-responsive solid-state materials with amplified responses. In theory, solid-state materials made from these polymers will respond most efficiently to a stimulus in solution when the polymer end-caps are displayed into solution at the solid-liquid interface, rather than being buried in the solid-state material. This article defines two strategies for increasing the likelihood that end-caps are displayed at this interface. A microscale-pump made from films of depolymerizable poly(phthalaldehyde) serves as a test system for evaluating the location of end-caps in the films. By measuring the flow rate initiated by depolymerization of the polymers within the films, we determined that both the polymer length and hydrophilicity of the end-caps affect the density of end-caps at the solid-liquid interface.

Original languageEnglish (US)
Pages (from-to)7257-7265
Number of pages9
JournalMacromolecules
Volume46
Issue number18
DOIs
StatePublished - Sep 24 2013

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Polymers
Depolymerization
Hydrophilicity
Liquids
Flow rate
Pumps

All Science Journal Classification (ASJC) codes

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

Cite this

Dilauro, Anthony M. ; Zhang, Hua ; Baker, Matthew S. ; Wong, Flory ; Sen, Ayusman ; Phillips, Scott T. / Accessibility of responsive end-caps in films composed of stimuli-responsive, depolymerizable poly(phthalaldehydes). In: Macromolecules. 2013 ; Vol. 46, No. 18. pp. 7257-7265.
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Accessibility of responsive end-caps in films composed of stimuli-responsive, depolymerizable poly(phthalaldehydes). / Dilauro, Anthony M.; Zhang, Hua; Baker, Matthew S.; Wong, Flory; Sen, Ayusman; Phillips, Scott T.

In: Macromolecules, Vol. 46, No. 18, 24.09.2013, p. 7257-7265.

Research output: Contribution to journalArticle

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