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La polimerización de apertura de anillo de cobaltocenofano de 19 electrones [2]: una ruta hacia los polielectrolitos
Ulrich F J Mayer1, Joe B Gilroy, Dermot O'Hare
1School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom.
Journal of the American Chemical Society
|July 10, 2009
Resumen
Los investigadores sintetizaron polielectrolitos de policobaltocenio solubles en agua mediante la polimerización de apertura de anillos. Este método produce materiales redox-activos de alto peso molecular para potenciales aplicaciones electroquímicas.
Área de la Ciencia:
- Química organometálica Química orgánica de los metales.
- La ciencia de los polímeros es la ciencia de los polímeros.
- Ciencia de los materiales Ciencia de los materiales.
Sus antecedentes:
- Los compuestos de policobaltocenio son materiales redox-activos con aplicaciones potenciales en varios campos.
- El desarrollo de métodos de síntesis eficientes para los policobaltocenos hidrosolubles de alto peso molecular es crucial para su uso práctico.
Objetivo del estudio:
- Para sintetizar polielectrolitos de policobaltocenio de alto peso molecular y solubles en agua.
- Explorar la utilidad de la polimerización de apertura de anillo (ROP) para crear estos materiales avanzados.
Principales métodos:
- La polimerización de apertura de anillo aniónico (ROP) de un monómero de dicarba[2]cobaltocenofano estirado.
- Oxidación de los oligómeros resultantes en presencia de cloruro de amonio para formar oligómeros de cloruro de policobaltocenio.
- ROP térmico del dicarba[2]cobaltocenofano seguido de oxidación con nitrato de amonio para obtener nitrato de policobaltocenio de alto peso molecular.
Principales resultados:
- Síntesis exitosa de polielectrolitos de policobaltocenio con diferentes pesos moleculares.
- Se formaron oligómeros con hasta nueve unidades de repetición a través de la polimerización aniónica.
- El nitrato de policobaltocenio de alto peso molecular se obtuvo a través de ROP térmico, lo que demuestra su actividad redox.
Conclusiones:
- La polimerización de apertura de anillo es una técnica eficaz para la preparación de polielectrolitos de policobaltocenio solubles en agua.
- Los materiales sintetizados son redox-activos y adecuados para una mayor investigación en aplicaciones electroquímicas.
- El control sobre el peso molecular se puede lograr seleccionando las condiciones de polimerización y oxidación adecuadas.
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