estudio de cromóforos orgánicos con propiedades ópticas no lineales
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ID: 195567
2004
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Abstract
Second-order nonlinear optical properties of three dyes (methylene blue, thionine and coumarin 7) were evaluated using ab initio quantum mechanical methods and compared with those of a standard push-pull chromophores (disperse red 1, DMNPAA and PNA). The two level model was used to obtain the frequency dependency of the microscopic electrooptic effect, and the results show that the obtained values for the dyes are higher than the standard chromophores at wavelengths of the near infrared. Therefore, these dyes may be applied in photonic devices and photorefractive materials.<br><br>Mediante métodos de cálculo ab initio se han estudiado las propiedades ópticas no lineales de segundo orden de tres colorantes (azul de metileno, tionina y coumarina 7), y se han comparado con los obtenidos para tres cromóforos donador-aceptor (disperse red 1, DMNPAA y PNA). Posteriormente se ha utilizado el modelo de los dos niveles para estimar la dependencia con la frecuencia del efecto electroóptico microscópico. Los resultados muestran que los colorantes estudiados tienen valores de esta propiedad del mismo orden o superiores que los cromóforos clásicos en longitudes de onda del infrarrojo cercano, por lo tanto puede estudiarse su aplicación en dispositivos fotónicos y materiales fotorrefractivos.
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| Authors | ;Acebal, P.;Blaya, S.;Carretero, L. |
| Journal | medicinal chemistry (shariqah (united arab emirates)) |
| Year | 2004 |
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