Photochemical characterization of biomimetic molecular switches |
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Authors: | Laura Rivado-CasasMarina Blanco-Lomas Pedro J CamposDiego Sampedro |
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Institution: | Departamento de Química, Universidad de La Rioja, Grupo de Síntesis Química de La Rioja, Unidad Asociada al C.S.I.C., Madre de Dios, 51, 26006 Logroño, Spain |
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Abstract: | The performance of fluorenylidene-pyrroline (FPs) and N-alkylated fluorenylidene-pyrroline (NAFPs) derivatives for their use as light-driven molecular switches has been studied. Both types of compounds share fast and controllable photoisomerization. Other competitive reaction pathways that could lead to low efficiency have been considered. Only weak fluorescence was measured and high photostability was found when irradiating these compounds for long times, together with high photoisomerization quantum yields. NAFPs are capable of using visible light, which could be useful for practical applications. |
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Keywords: | Molecular switches Photochemistry Photoisomerization Sigmatropic rearrangement Retinal |
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