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http://cio.repositorioinstitucional.mx/jspui/handle/1002/310| DEVELOPMENT AND OPTICAL CHARACTERIZATION OF WHITE LIGHT EMISSION ORGANIC NANOMATERIALS | |
| Mayra Lucila Melgoza Ramírez | |
| MARIO ALEJANDRO RODRIGUEZ RIVERA | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| Nanomaterials Optical characterization Organic compounds | |
| "Organic materials have been the focus of a growing body academic and industry fields for more than 50 years. Up to only a short time ago, organic electronic and optical phenomena have been the domain of pure research, somewhat removed from practical application. Since the first demonstration in mid-1980s, with a low voltage and efficient thin film light emitting diode by Ching Tang and Steven van Slyke at Kodak, organic materials have proven useful in a number of applications. Some of these applications are organic light emitter diodes (OLEDs), photovoltaic devices (OPVs), sensors and biomedical, among others. In this thesis, organic fluorophores BT3, ACN1, BT2, BT20 and DBBT3-Hex with blue, green and red were processed as organic nanoparticles (ONPs) and doped silica nanoparticles (SNPs) by reprecipitation and microemulsion techniques. Electronic molecular transitions for BT3, ACN1, BT2, BT20 and DBBT3-Hex were calculated by theoretical methods and also was established the molecular electronic density distribution on frontier orbitals and bandgap data. Linear optical properties and morphological characteristics for aqueous suspension of each nanomaterials were established by absorption spectroscopy, photoluminescence, quantum efficiency measurements, dynamic light scattering (DLS) and scanning electron microscopy (SEM). SNPs fabricated in this work showed a narrow size distribution, around of 48.8±4.11 which was observed by SEM images and confirmed with DLS measurement, while a wide size distribution (around 43.8±21.88) was denoted for the nanomaterials fabricated by reprecipitation. Molar ratios of these five organic materials in solution and aqueous suspension were combined to obtain mixtures red-green-blue (RGB) with white-light emission that was corroborated by determination of color coordinates of the Commission Internationale de L’eclairage (CIE). Solution with white-light emission by excitation at 375 nm was fabricated by molar ratio of R:G:B = 0.5:1.5:2 with color coordinates of (0.29, 0.30). In the solid state, fabricated aqueous suspension RGB of NPs present (0.35, 0.38), and in the case of SNPs the coordinates were (0.21, 0.35)." | |
| 2015-11 | |
| Tesis de maestría | |
| Inglés | |
| León, Guanajuato | |
| Público en general | |
| Melgoza Ramírez, (2015). "Development and Optical Characterization of white light emission Organic Nanomaterials". Tesis de Maestría en Ciencias (Óptica). Centro de Investigaciones en Óptica, A.C. León, Guanajuato. 78 pp. | |
| ÓPTICA | |
| Aparece en las colecciones: | MAESTRIA EN CIENCIAS (ÓPTICA) |
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| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| 16581.pdf | Texto completo / Full text | 1.76 MB | Adobe PDF | Visualizar/Abrir |