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Anisotropic floating monolayers of 2-docosylamino-5-nitropyridine studied by second-harmonic generation

✍ Scribed by Thierry Verbiest; Yves Van Rompaey; Martti Kauranen; André Persoons

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
396 KB
Volume
257
Category
Article
ISSN
0009-2614

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✦ Synopsis

We demonstrate that a significant in-plane anisotropy is present in monolayers of 2-docosylamino-S-nitropyridine at an air-water interface. The floating monolayers were studied by in situ transmission second-harmonic generation under normal incidence and shown to have C ,h symmetry. The formation of such anisotropic monolayers was studied as a function of the surface pressure of the layers. The process was initiated by the formation of domains in which the molecules are preferentially aligned parallel rather than antiparallel to each other.

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