Publication: Propiedades Ópticas y Morfología de Polímeros Conjugados con Control Supramolecular
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2021-03-22
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Universidad Complutense de Madrid
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Abstract
Los polímeros conjugados (PCs), una parte central de la familia de semiconductores orgánicos, han sido objeto de una intensa investigación debido a sus propiedades eficientes de emisión de luz, alta ganancia óptica y movilidad de portadores de carga que los hace adecuados para el desarrollo de diodos orgánicos emisores de luz, (OLEDs), láseres orgánicos (OLs) y sensores. Sin embargo, la compleja disposición de las PCs en estado sólido conduce a una diversidad de morfologías de película y fotofísica rica, difícil de precisar, siendo un tema actual en la investigación de materiales. En general, la naturaleza en gran medida de desorden de las PC conduce a nanoestructuras no homogéneas con una amplia variedad de arreglos de cadenas en la fase condensada y presencia de apilamiento π-π asistido por efectos heteroátomos. Por lo tanto, sus propiedades de emisión de luz pueden experimentar una compensación debido a la presencia de estados entre cadenas débilmente emisivos (agregados, excímeros, estados de transferencia de carga)...
Conjugated polymers (CPs), a central part of the organic semiconductor family, have been subject of intensive research on account of their efficient light emission properties, high optical gain and notable charge carrier mobilities which make them suitable for the development of organic light-emitting diodes (OLEDs), organic lasers (OLs) and sensors. However, the complex arrangement of CPs in solid state leads to a diversity of film morphologies and rich photophysics difficult to pin-point, being the subject of current material research. In general, the largely disorder nature of CPs leads to inhomogeneous nanostructures with a wide variety of chain arrangements in the condensed phase and presence of π-π stacking assisted by hetero-atom effects. Thus, their light emission properties can experience a tradeoff due to the presence of weakly emissive inter-chain states, (aggregates, excimers, charge transfer states)...
Conjugated polymers (CPs), a central part of the organic semiconductor family, have been subject of intensive research on account of their efficient light emission properties, high optical gain and notable charge carrier mobilities which make them suitable for the development of organic light-emitting diodes (OLEDs), organic lasers (OLs) and sensors. However, the complex arrangement of CPs in solid state leads to a diversity of film morphologies and rich photophysics difficult to pin-point, being the subject of current material research. In general, the largely disorder nature of CPs leads to inhomogeneous nanostructures with a wide variety of chain arrangements in the condensed phase and presence of π-π stacking assisted by hetero-atom effects. Thus, their light emission properties can experience a tradeoff due to the presence of weakly emissive inter-chain states, (aggregates, excimers, charge transfer states)...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Ciencias Químicas, leída el 05-11-2020