Synthesis of polymeric temperature sensor based on photophysical property of fullerene and thermal sensitivity of poly(N-isopropylacrylamide)

Sung Woo Hong, Doo Young Kim, Jea Uk Lee, Won Ho Jo

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

Two types of temperature sensor which have pyrene (Pyr) and fullerene (C60) attached to poly(N-isopropylacrylamide) (PNIPAM) are synthesized, and their thermal sensitivities are examined in terms of the fluorescence quenching efficiency of C60: One is pyrene-poly(N-isopropylacrylamide)-fullerene (Pyr-PNIPAM- C60) which has Pyr and C60 attached to each chain end of PNIPAM, and the other is pyrene-poly(N-isopropylacrylamide-co-fullerenylethyl methacrylate) (Pyr-P(NIPAM-co-C60)) which has Pyr attached to one chain end of PNIAPM and two C60s attached onto PNIPAM backbone. Both of them exhibit the same conformational change from coil to globule at a specific temperature, which results in drastic on-and-off quenching efficiency. The quenching efficiency of Pyr-P(NIPAM-co-C60) is larger than Pyr-PNIPAM-C60, since Pyr- P(NIPAN-co-C60) has more C60s located closer to Pyr than Pyr-PNIPAM-C60. These C60-based thermosensitive polymers exhibit well-defined on-and-off behavior at a small change in temperature.

Original languageEnglish
Pages (from-to)2756-2761
Number of pages6
JournalMacromolecules
Volume42
Issue number7
DOIs
StatePublished - Apr 14 2009

ASJC Scopus subject areas

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

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