DE10242435-A1  ERN,J., et.al.: Femtosecond reaction dynamics of a photochromic dithienylethene derivative. In: Journal of Luminescence 87-89, 2000, S.742-744;  FERNANDEZ-ACEBES,Alvaro, LEHN,Jean-Marie: Optical Switching and Fluorescence Modulation Properties of Photochromic Metal Complexes Derived from Dithienylethene Ligands. In: Chem. Eur. J., 1999, 5, No.11, S.3285-3292;  KAWAI,Stephen H., et.al.: Photochemical pK a -Modulation and Gated Photochromic Properties of a Novel Diarylethene Switch. In: Eur. J. Org. Chem., 1999, S.2359-2366WO2004026988-A1  CHAPUT F ET AL: "PHOTOCHROMIC SOL-GEL FILMS CONTAINING DITHIENYLETHENE AND AZOBENZENE DERIVATIVES: FROM THE DESIGN OF OPTICAL COMPONENTS TO THE OPTICAL DATA STORAGE" MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY. SECTION A. MOLECULAR CRYSTALS AND LIQUID CRYSTALS, GORDON AND BREACH PUBLISHERS, CH, CH, Bd. 344, 14. November 1999 (1999-11-14), Seiten 77-82, XP008002411 ISSN: 1058-725X;  KIM E ET AL: "PHOTOINDUCED REFRACTIVE INDEX CHANGE OF A PHOTOCHROMIC DIARYLETHENE POLYMER" MACROMOLECULES, AMERICAN CHEMICAL SOCIETY. EASTON, US, Bd. 32, Nr. 15, 27. Juli 1999 (1999-07-27), Seiten 4855-4860, XP000845935 ISSN: 0024-9297;  PATENT ABSTRACTS OF JAPAN vol. 2002, no. 09, 4. September 2002 (2002-09-04) -& JP 2002 145878 A (JAPAN SCIENCE & TECHNOLOGY CORP), 22. Mai 2002 (2002-05-22) -& DATABASE WPI Section Ch, Week 200274 Derwent Publications Ltd., London, GB; Class A26, AN 2002-684894 XP002267355 & JP 2002 145878 A;  IRIE M: "Diarylethens for Memories and Switches" CHEMICAL REVIEWS, Bd. 100, 2000 - 21. April 2000 (2000-04-21), Seiten 1685-1716, XP002267352 in der Anmeldung erwaehnt;  IRIE S; IRIE M: "Radiation-Induced Coloration of Photochromic Dithienylethene Derivatives in Polymer Matrices" BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, Bd. 73, Nr. 10, 2000, Seiten 2385-2388, XP008026587 in der Anmeldung erwaehnt;  NAKASHIMA H ET AL: "SYNTHESIS OF POLYSTYRENE AND POLY(ALKYL METHACRYLATE)S HAVING PHOTOCHROMIC DITHIENYLETHENE PENDANT GROUPS" POLYMER JOURNAL, SOCIETY OF POLYMER SCIENCE. TOKYO, JP, Bd. 30, Nr. 12, 15. Dezember 1998 (1998-12-15), Seiten 985-989, XP000793490 ISSN: 0032-3896 in der Anmeldung erwaehnt;  OWRUTSKY J C; NELSON H H; BARONAVSKI A P; KIM O-K; TSIVGOULIS G M; GILAT S L; LEHN J-M: "Optical properties and dynamics of a photochromic bisthienylethen in solution and in a polymer film" CHEMICAL PHYSICS LETTERS, Bd. 293, 1998 - 4. September 1998 (1998-09-04), Seiten 555-563, XP002267353 in der Anmeldung erwaehnt;  STELLACCI F; BERTARELLI C; TOSCANO F; GALLAZZI M C; ZOTTI G; ZERBI G: "A High Quantum Yield Diarylethene-Backbone Photochromic Polymer" ADVANCED MATERIALS, Bd. 11, Nr. 4, 1999, Seiten 292-295, XP002267350 in der Anmeldung erwaehnt;  STELLACCI F; TOSCANO F; GALLAZZI M C; ZERBI G: "From a photochromic diarylethene monomer to a dopable photchromic polymer: optical properties" SYNTHETIC METALS, Bd. 102, 1999, Seiten 979-980, XP002267351 in der Anmeldung erwaehnt;  BENS A T; COMANICI R; GABEL B; KRYSCHI C; MARTIN H-D; RITTER H: "Novel photosensitive polyurethanes based on photochromic dithineylethene monomers: synthesis, charcterization and photophysical properties of a new film-building material for photonic applications" E-POLYMERS , Nr. 003, 2003 - 29. Januar 2003 (2003-01-29), Seiten 1-13, XP002267354