Second harmonic generation from Langmuir-Blodgett films of retinal and retinal Schiff bases

Jung Y. Huang, Aaron Lewis*, Th Rasing

*Corresponding author for this work

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

The second harmonic signal from monolayers of retinal and retinal Schiff bases is reported. The results have yielded information on the monolayer structure and demonstrate that retinal and retinal Schiff bases have large second-order molecular hyperpolarizabilities with values of 1.4 × 10-28, 1.2 × 10-28, and 2.3 × 10-28 esu for retinal, the unprotonated Schiff base, and the protonated Schiff base, respectively. These values compare well with the known variation in the alteration in the dipole moment of such chromophores upon excitation.

Original languageEnglish
Pages (from-to)1756-1759
Number of pages4
JournalJournal of physical chemistry
Volume92
Issue number7
DOIs
StatePublished - 1 Jan 1988

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