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Surface-enhanced resonance Raman scattering imaging of Langmuir–Blodgett monolayers of bis(benzimidazo)perylene on silver island films

✍ Scribed by C. J. L. Constantino; R. F. Aroca

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 69 KB
Volume: 31
Category: Article
ISSN: 0377-0486
DOI: 10.1002/1097-4555(200010)31:10<887::aid-jrs603>3.0.co;2-v

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✦ Synopsis

The point-by-point mapping and global images of the surface-enhanced resonance Raman scattering (SERRS) spectra obtained from Langmuir-Blodgett (LB) monolayers of bis(benzimidazo)perylene (AzoPTCD) on silver island films are reported. The mapping and global Raman images of the LB-coated silver surfaces were obtained using 514.5 nm laser radiation. Visualization of the variation of the SERRS intensity across a 40×40 µm rough metal surface is achieved. Absorption UV-VIS and emission spectra of AzoPTCD solutions and monolayers on glass and silver islands are discussed. Surface-enhanced fluorescence (SEF) of the excimer emission from aggregates in LB film has been observed. The enhancement factors for SEF and SERS are discussed.

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