Orientational distribution of SHG chromophore on polyimide LB film

Cheolsoo Jung, Byoungchoo Park, Mitsutoshi Jikei, Hideo Takezoe, Masa aki Kakimoto

Research output: Contribution to journalConference articlepeer-review


The Langmuir-Blodgett (LB) films composed of N,N-diphenylamino-p-nitrostibene as a side chain of polyimide were prepared by the precursor method. Oblique incident surface SHG measurements from the LB monolayers before and after the imidization provided the symmetries and nonlinear-optical tensor components of the LB films. From the obtained orientational distribution functions (ODFs) of the monolayer before and after the imidization process, it was found that the polar angle of the side chain increases by the imidization and this causes the decrement of the nonlinear optical components. But the half-width (Δθ) of the major molecular tilt angle decreases by the imidization suggesting that the chromophore is more closely packed.

Original languageEnglish
Pages (from-to)123-126
Number of pages4
JournalMolecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Issue number1-4
StatePublished - 1999
EventProceedings of the 1998 4th International Conference on Organic Nonlinear Optics (ICONO'4) - The 8th IKETANI Conference - Chitose, Jpn
Duration: 12 Oct 199815 Oct 1998


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