کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
177653 458993 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Linear and nonlinear optical properties of covalently bound C.I. Disperse Red 1 chromophore/silica hybrid film
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Linear and nonlinear optical properties of covalently bound C.I. Disperse Red 1 chromophore/silica hybrid film
چکیده انگلیسی

The third-order nonlinearity of an organic–inorganic hybrid silica film covalently doped and dispersed with C.I. Disperse Red 1 was studied using the Z-scan technique. The micropores in the sol–gel derived silica matrix were smaller than the dye ligand which led to dye aggregation. A nonlinear refractive index of −3.4 × 10−9 esu and a nonlinear susceptibility of 5.9 × 10−10 esu were recorded at 1064 nm. The large blue shift of the absorption band due to dye aggregation resulted in an enhanced two-photon absorption. The observed nonlinearity is attributable to both two-photon absorption resonance and the refraction change induced by the enlarged π-delocalization conjugation between the dye and the silica matrix.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 78, Issue 3, September 2008, Pages 219–224
نویسندگان
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