Dynamics of cis isomers in highly sensitive amino-azobenzene monolayers: The effect of slow relaxation on photo-induced anisotropy

Youngwoo Yi, Guanjiu Fang, Joseph E. MacLennan, Noel A. Clark, Joseph Dahdah, Thomas E. Furtak, Kyoungsik Kim, Matthew J. Farrow, Eva Korblova, David M. Walba

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Abstract

The initial development of photoinduced anisotropy in highly photosensitive monolayers of an aminoazobenzene molecule (dMR, a derivative of o-methyl red) that are initially randomized using circularly polarized light is found to be significantly slower than in monolayers randomized by thermal relaxation. We propose that this is a direct consequence of the slow thermal relaxation of isomers from the cis to the trans state and suggest that such considerations are important in designing even more sensitive photoactive monolayers and in understanding their photodynamics.

Original languageEnglish
Article number103521
JournalJournal of Applied Physics
Volume109
Issue number10
DOIs
Publication statusPublished - 2011 May 15

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Yi, Y., Fang, G., MacLennan, J. E., Clark, N. A., Dahdah, J., Furtak, T. E., Kim, K., Farrow, M. J., Korblova, E., & Walba, D. M. (2011). Dynamics of cis isomers in highly sensitive amino-azobenzene monolayers: The effect of slow relaxation on photo-induced anisotropy. Journal of Applied Physics, 109(10), [103521]. https://doi.org/10.1063/1.3587572