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Multilayer χ(2) films from porphyrin chromophores by LBK processing

Publication ,  Journal Article
Lindsay, GA; Kolega, RR; Roberts, MJ; Uyeda, HT; Therien, M; Herman, WN
Published in: Proceedings of SPIE - The International Society for Optical Engineering
December 1, 1999

Electrooptic films based on a new class of porphyrin chromophores with exceptionally large molecular first hyperpolarizabilities are being developed. These chromophores feature donor and acceptor groups linked to the porphyrin macrocycle at the 5- and 15-meso positions through intervening ethynyl moieties. We report herein preliminary results that describe the ambient temperature assembly of ordered, electrooptic films using the Langmuir-Blodgett-Kuhn (LBK) method. The facile formation of such films was made possible by the preparation of amphiphilic chromophores containing hydrophobic aliphatic substituents to enhance the polar alignment at the air-water interface. Second harmonic generation and UV-Vis absorption were used to characterize the films as a function of the number of layers deposited. Polar films containing up to 10 layers were made by simple Y-type homolayer deposition, and up to six layers by the Y-type heterolayer method in which the porphyrin layers were interleaved with poly(t-butyl methacrylate). The polar order in these films relaxed exponentially (50% at room temperature after 3 weeks). Ionic structures are recommended for improved stability.

Duke Scholars

Published In

Proceedings of SPIE - The International Society for Optical Engineering

ISSN

0277-786X

Publication Date

December 1, 1999

Volume

3796

Start / End Page

299 / 307
 

Citation

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Lindsay, G. A., Kolega, R. R., Roberts, M. J., Uyeda, H. T., Therien, M., & Herman, W. N. (1999). Multilayer χ(2) films from porphyrin chromophores by LBK processing. Proceedings of SPIE - The International Society for Optical Engineering, 3796, 299–307.
Lindsay, G. A., R. R. Kolega, M. J. Roberts, H. T. Uyeda, M. Therien, and W. N. Herman. “Multilayer χ(2) films from porphyrin chromophores by LBK processing.” Proceedings of SPIE - The International Society for Optical Engineering 3796 (December 1, 1999): 299–307.
Lindsay GA, Kolega RR, Roberts MJ, Uyeda HT, Therien M, Herman WN. Multilayer χ(2) films from porphyrin chromophores by LBK processing. Proceedings of SPIE - The International Society for Optical Engineering. 1999 Dec 1;3796:299–307.
Lindsay, G. A., et al. “Multilayer χ(2) films from porphyrin chromophores by LBK processing.” Proceedings of SPIE - The International Society for Optical Engineering, vol. 3796, Dec. 1999, pp. 299–307.
Lindsay GA, Kolega RR, Roberts MJ, Uyeda HT, Therien M, Herman WN. Multilayer χ(2) films from porphyrin chromophores by LBK processing. Proceedings of SPIE - The International Society for Optical Engineering. 1999 Dec 1;3796:299–307.

Published In

Proceedings of SPIE - The International Society for Optical Engineering

ISSN

0277-786X

Publication Date

December 1, 1999

Volume

3796

Start / End Page

299 / 307