Photo-generated stable complex with efficient power of photo-induced charge separation between porphyrin and quinone |
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| Affiliation: | 1. BASF Process Research and Chemical Engineering, 25 Middlesex-Essex Turnpike, Iselin, NJ 08830, USA;2. BASF Chemicals India Pvt Ltd, Plot 12, TTC Area, Thane-Belapur Road, Turbhe Navi Mumbai 400705, India;3. BASF Process Catalysts and Technologies, 101 Wood Avenue, Iselin, NJ 08830, USA;1. Groupe de Spectroscopie Moléculaire, Institut des Sciences Moléculaires, UMR5255 CNRS, Université de Bordeaux 1, 351 cours de la Libération, F-33405 Talence, France;2. Helmholtz Zentrum Berlin, BENSC, Glienickerstr. 100, D-14109 Berlin, Germany;3. Institut für Festkörperforschung, Forschungzzentrum Jülich, D-52425 Jülich, Germany;1. Chemical Sciences Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064, India;2. Department of Chemistry, Adamas Institute of Technology, Barasat-Barrackpore Road, Barbaria, P.O. Jagannathpur, North 24 Parganas, Pin 700126, India;1. Departamento de Física, Universidade Estadual de Maringá, Avenida Colombo, 5790, 87020-900 Maringá, Paraná, Brazil;2. Dipartimento di Scienza Applicata del Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy;3. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoye shosse 31, 115409 Moscow, Russian Federation;4. Faculty of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, Zografos, Athens 157 84, Greece |
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| Abstract: | A stable charge-transfer complex was formed between 5,10,15,20-tetraphenyl-21H,23H-porphine and a quinone in a neutral or acidic chloroform solution on irradiation with blue light. The existence of this photo-generated complex was confirmed by the change of visible absorption spectra, fluorescence spectra and NMR spectra. It had a high power of photo-induced charge separation even when irradiated with red light, as was proven from the intensity dependence of chemically induced dynamic nuclear polarization on the wavelength of excited light and on the irradiation time. |
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