Microscale analysis of patterning reactions via FTIR imaging: Application to intelligent hydrogel systems

Dipti Biswal, J. Zach Hilt

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


A novel application of FTIR imaging for real-time characterization of patterning polymerization processes with microscale spatial resolution is presented. These methods will enable the microscale analysis of the reactions of polymeric systems with various substrates and devices. Specifically, intelligent hydrogels containing ionic groups (pH responsive) and poly(ethylene glycol) have been micropatterned onto gold surfaces, and the free-radical polymerization reaction has been characterized. It was demonstrated that differences in the reaction rates across a patterned region could be successfully resolved and characterized. This novel characterization method based on FTIR imaging will facilitate the optimization of integration processes of patterned polymeric films leading to enhanced (and reproducible) application of these materials as functional components in a variety of microdevices.

Original languageEnglish
Pages (from-to)7355-7360
Number of pages6
Issue number21
StatePublished - Oct 4 2006

Bibliographical note

Funding Information:
This research work was supported in part by a grant from the Kentucky Science and Engineering Foundation as per Grant Agreement #KSEF 799-RDE-007 with the Kentucky Science and Technology Corporation.


  • FTIR imaging
  • Hydrogel
  • Microcontact printing

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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