Laser induced molecular transfer using ablation of a triazeno-polymer

D. M. Karnakis, T. Lippert, N. Ichinose, S. Kawanishi, H. Fukumura

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

We report on the laser induced transfer of molecular dopants between thin polymer films. Pulsed UV laser radiation (355 nm) of moderate intensity, is directed through a transparent polymer film and absorbed by a photolabile triazeno-polymer (TP) doped with pyrene at low concentration. The explosive photodecomposition of TP results in the transfer of intact pyrene molecules to a tightly contacted neat polymer film of either poly(ethyl methacrylate) (PEMA) or poly(butyl methacrylate) (PBMA). Fluorometry of the receiving polymer surface indicated that the pyrene emission intensity grows as the laser pulse number increases but reduces with rising laser fluence. Surface examination suggests that most of the transferred dopant is implanted beneath the receiving polymer surface and the efficiency of this process is enhanced with lowering of its glass transition temperature T g . A mechanism is discussed to explain the current experimental results.

Original languageEnglish
Pages (from-to)781-786
Number of pages6
JournalApplied Surface Science
Volume127-129
DOIs
Publication statusPublished - 1998 May

Keywords

  • Fluorescence
  • Laser ablation transfer
  • Laser implantation
  • Pyrene
  • Triazene

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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  • Cite this

    Karnakis, D. M., Lippert, T., Ichinose, N., Kawanishi, S., & Fukumura, H. (1998). Laser induced molecular transfer using ablation of a triazeno-polymer. Applied Surface Science, 127-129, 781-786. https://doi.org/10.1016/S0169-4332(97)00742-3