Surface-enhanced fluorescence of aggregates in Langmuir-Blodgett monolayers

Ricardo Aroca; Eric Johnson

doi:10.1117/12.22918

1 November 1990 Surface-enhanced fluorescence of aggregates in Langmuir-Blodgett monolayers

Ricardo Aroca, Eric Johnson

Proceedings Volume 1336, Raman and Luminescence Spectroscopies in Technology II; (1990) https://doi.org/10.1117/12.22918
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

The geometry of the molecular organization in monolayers seems to be a key factor in the formation of aggregates. In the present work, monolayers of perylene tetracarboxylic derivatives have been fabricated under conditions leading to different molecular orientations in the film. Monolayers of the neat dye material, and mixed monolayers, were prepared at different pH values of the subphase and transferred to glass slides at constant pressure. Monolayers were also transferred to glass substrates at various points in the surface pressure-area isotherm. Steady state surface-enhanced fluorescence measurements were used to characterize the aggregate formation. Surface-enhanced resonant Raman scattering (SERRS) was observed and used as an internal reference in the fluorescence measurements.

Citation Download Citation

Ricardo Aroca and Eric Johnson "Surface-enhanced fluorescence of aggregates in Langmuir-Blodgett monolayers", Proc. SPIE 1336, Raman and Luminescence Spectroscopies in Technology II, (1 November 1990); https://doi.org/10.1117/12.22918

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