Electronic and photoacoustic spectroscopies of chlorophyll a in monolayer and multilayer arrays

André Désormeaux, Roger M. Leblanc

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A comparative study of the electronic and photoacoustic spectra of monolayers and multilayers of chlorophyll a (chl a) (up to 50 layers) has been made. A non-linear relation has been observed between the absorbance or the relative acoustic signal as a function of the number of monolayers for wavelengths of 440, 625 and 680 nm. This is mainly explained by the formation of aggregates as the number of monolayers increases which may absorb light differently. A much less pronounced relation is, however, observed for the acoustic signal at 625 nm, which is explained by a partial saturation effect. We have also examined the spectral characteristics of chl a in other in vitro systems. These model systems are solid solutions and amorphous solid films. The results obtained for these models are compared with each other and are discussed in terms of the aggregation of chl a.

Original languageEnglish (US)
Pages (from-to)91-99
Number of pages9
JournalThin Solid Films
Volume132
Issue number1-4
DOIs
StatePublished - Oct 1985
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Electronic and photoacoustic spectroscopies of chlorophyll a in monolayer and multilayer arrays'. Together they form a unique fingerprint.

Cite this