Chemical structure and nonlinear optical properties of polar self-assembling films

Leiming Li, Eugene R. Zubarev, Brad A. Acker, Samuel I Stupp

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15 Citations (Scopus)

Abstract

We report on the influence of molecular chemical structure on second harmonic activity in several homologous series of self-assembling short chain polymers containing both molecularly rigid and flexible segments and known to form supramolecular nanostructures. The second-order nonlinear optical susceptibility and physical structure of films formed by these molecules were investigated by second harmonic generation experiments and small-angle X-ray scattering. It was observed that all series of molecules formed polar films with a layered structure by self-assembly. The nonlinear susceptibilities were found to increase with the ratio of first hyperpolarizability to layer period in the Self-assembled films, further suggesting spontaneous polar order in these layers of supramolecular structures.

Original languageEnglish
Pages (from-to)2560-2565
Number of pages6
JournalMacromolecules
Volume35
Issue number7
DOIs
Publication statusPublished - Mar 26 2002

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ASJC Scopus subject areas

  • Materials Chemistry

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