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Supramolecular Ordered Organic Thin Films for Nonlinear Optical and Optoelectronic Applications
Author(s) -
Khan R. U. A.,
Kwon OP.,
Tapponnier A.,
Rashid A. N.,
Günter P.
Publication year - 2006
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200500225
Subject(s) - supramolecular chemistry , materials science , thin film , nonlinear optical , hydrazone , amorphous solid , deposition (geology) , molecule , organic semiconductor , nonlinear optics , optoelectronics , nanotechnology , crystallography , nonlinear system , organic chemistry , chemistry , paleontology , sediment , biology , physics , quantum mechanics
For second‐order nonlinear optics, a supramolecularly ordered non‐centrosymmetric structure is required. Additionally, well‐ordered organic semiconducting thin films possess superior electronic properties compared to their amorphous counterparts. Herein, we firstly highlight that the design of nonlinear molecules and their functionalization for good molecular orientation (e.g., H‐bonding) is an important method in which to induce supramolecular ordering during subsequent growth. Secondly, we demonstrate a range of growth strategies (e.g., oblique‐incidence molecular beam deposition, hot‐wall deposition) for the growth of molecularly ordered thin films. Thirdly, we discuss various organic supramolecularly ordered material systems (4‐[trans(pyridin‐4‐ylvinyl)] benzoic acid, 5‐bromo‐5′‐formyl‐2,2′‐bithiophene‐4‐nitrophenyl hydrazone, tris(8‐hydroxyquinoline) aluminum) and observe the effects of molecular orientation on their nonlinear optical and optoelectronic properties.