Chemical-sensing structure, direction, and quantification of plasma-organic films with α-amino acids

Iwao Sugimoto, Masayuki Nakamura, Hiroki Kuwano

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Gravimetric organic gas-sensing devices capable of detection at sub-ppm levels can be produced by radio-frequency sputtering of α-amino acids onto quartz crystal plates. By controlling the substituents of the α-amino acids, the molecular structure and sorption characteristics of the amino acid films can be tailored. Phenylalanine and tyrosine films maintain their original structures, and their sorption properties are mainly governed by the degree of hydrogen bonding. Non-benzenoid amino acid films become polarizable due to their deficiency in oxygen caused by plasma processing. Multiple linear regression analysis, based on linear solvation energy relationships, can predict the sorption capacities quantitatively.

Original languageEnglish
Pages (from-to)342-347
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume36
Issue number1-3
DOIs
Publication statusPublished - 1996 Oct
Externally publishedYes

Keywords

  • Gravimetric organic gas-sensor
  • Radio-frequency sputtering
  • α-amino acids

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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