caa a22 4500 463226291 CHVBK 20180405153228.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s10853-007-1657-z doi (NATIONALLICENCE)springer-10.1007/s10853-007-1657-z Optical switching of a photochromic bis-phenylazo compound in PMMA films [Elektronische Daten] [Maria Larciprete, Danilo Dini, Raffaella Ostuni, Concita Sibilia, Mario Bertolotti, Xavier Alvarez-Mico, Rafael Gomez-Bombarelli, Mirko Cappeddu, Michael Scalora, Mark Bloemer] We present our results on a newly synthesized bis-phenylazo derivative, namely bisperfluoroalkylsulfonylamino- arylazomethylene-triphenyl-phosphorane (BAM-TPP). Thin films of BAM-TPP in polymethylmethacrylate (PMMA) matrix were prepared. The films (thickness, d<60μm) were exposed to UV-vis light with variable intensity in order to stimulate the photochromic reaction of BAM-TPP. The resulting absorption changes of the BAM-TPP/PMMA films were investigated by spectrophotometry. The absorption spectra reveal that BAM-TPP molecules in PMMA undergo photoisomerization with resulting decrease of absorbance in the range 500-700nm. Finally, the time response of film transmittance at 514nm under increasing CW light intensity was recorded, showing that the reverse photochromic process brings the absorbance back to its pristine value. The obtained films thus proved to be suitable for optical switching applications. Springer Science+Business Media, LLC, 2007 Larciprete Maria INFM, Department of Energetics, University of Rome "La Sapienza”, Via A. Scarpa 16, 00161, Roma, Italy aut Dini Danilo Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076, Tubingen, Germany aut Ostuni Raffaella INFM, Department of Energetics, University of Rome "La Sapienza”, Via A. Scarpa 16, 00161, Roma, Italy aut Sibilia Concita INFM, Department of Energetics, University of Rome "La Sapienza”, Via A. Scarpa 16, 00161, Roma, Italy aut Bertolotti Mario INFM, Department of Energetics, University of Rome "La Sapienza”, Via A. Scarpa 16, 00161, Roma, Italy aut Alvarez-Mico Xavier Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076, Tubingen, Germany aut Gomez-Bombarelli Rafael Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076, Tubingen, Germany aut Cappeddu Mirko AMSRD-WS-ST Charles M. Bowden Research Center, Bldg. 7804 Redstone Arsenal, 35898-5000, Hunstsville, AL, USA aut Scalora Michael AMSRD-WS-ST Charles M. Bowden Research Center, Bldg. 7804 Redstone Arsenal, 35898-5000, Hunstsville, AL, USA aut Bloemer Mark AMSRD-WS-ST Charles M. Bowden Research Center, Bldg. 7804 Redstone Arsenal, 35898-5000, Hunstsville, AL, USA aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/18(2007-09-01), 7866-7871 0022-2461 42:18<7866 2007 42 10853 https://doi.org/10.1007/s10853-007-1657-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1657-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Larciprete Maria INFM, Department of Energetics, University of Rome "La Sapienza”, Via A. Scarpa 16, 00161, Roma, Italy aut NATIONALLICENCE 700 1- Dini Danilo Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076, Tubingen, Germany aut NATIONALLICENCE 700 1- Ostuni Raffaella INFM, Department of Energetics, University of Rome "La Sapienza”, Via A. Scarpa 16, 00161, Roma, Italy aut NATIONALLICENCE 700 1- Sibilia Concita INFM, Department of Energetics, University of Rome "La Sapienza”, Via A. Scarpa 16, 00161, Roma, Italy aut NATIONALLICENCE 700 1- Bertolotti Mario INFM, Department of Energetics, University of Rome "La Sapienza”, Via A. Scarpa 16, 00161, Roma, Italy aut NATIONALLICENCE 700 1- Alvarez-Mico Xavier Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076, Tubingen, Germany aut NATIONALLICENCE 700 1- Gomez-Bombarelli Rafael Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076, Tubingen, Germany aut NATIONALLICENCE 700 1- Cappeddu Mirko AMSRD-WS-ST Charles M. Bowden Research Center, Bldg. 7804 Redstone Arsenal, 35898-5000, Hunstsville, AL, USA aut NATIONALLICENCE 700 1- Scalora Michael AMSRD-WS-ST Charles M. Bowden Research Center, Bldg. 7804 Redstone Arsenal, 35898-5000, Hunstsville, AL, USA aut NATIONALLICENCE 700 1- Bloemer Mark AMSRD-WS-ST Charles M. Bowden Research Center, Bldg. 7804 Redstone Arsenal, 35898-5000, Hunstsville, AL, USA aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/18(2007-09-01), 7866-7871 0022-2461 42:18<7866 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer