Compositions – Light transmission modifying compositions
Reexamination Certificate
2006-11-14
2006-11-14
Gulakowski, Randy (Department: 1712)
Compositions
Light transmission modifying compositions
C252S586000, C526S291000
Reexamination Certificate
active
07135132
ABSTRACT:
The present invention relates to a photochromic fluorescent polymer and a preparation method thereof, and more particularly, to a photochromic fluorescent polymer having bonds between diarylethenes and aryethene-vinylene precursors with a weight average molecular weight of 500 to 1,000,000, which exhibits highly improved photochromic and fluorescent characteristics compared to conventional photochromic fluorescent materials and excellent solubility to organic solvents, thus being applicable for photofunctional materials and information processing device such as optical recording, optical switches, non-destructive optical recording materials.
REFERENCES:
patent: 6787621 (2004-09-01), Kim et al.
patent: 2003/0118924 (2003-06-01), Kim et al.
H. Cho et al., Highly Fluorescent and Photochromic Diarylethene Oligomer Bridged by p-Phenylenevinylene, Macromolecules, 2002, 35, 8684-8687.
E. Kim et al., Photoinduced Refractive Index Change of a Photochromic Diarylethene Polymer, Macromolecules, 1999, 32, 4855-4860.
K. Uchida et al., Synthesis of Novel Photochromic Films by Oxidation Polymerization of Diarylethenes Containing Phenol Groups, Advanced Functional Materials, 13(10), Wiley InterScience (p. 755-762), Published Online Oct. 7, 2003.
Irie, M., “Diarylethenes for Memories and Switches”, Chem. Rev., vol. 100, No. 5, pp. 1685-1716, (2000).
Fernandez-Acebes, A. et al., “Optical Switching and Fluorescence Modulation in Photochromic Metal Complexes”, Advanced Materials, vol. 10, No. 18, pp. 1519-1522, (1998).
Osuka, A. et al., “Synthesis and Photoisomerization of Dithienylethene-Bridged Diporphyrins”, Journal of Organic Chemistry, vol. 66, No. 11, pp. 3913-3923, (2001).
Cho Hyunil
Kim Eunkyoung
Gulakowski Randy
Korea Research Institute Of Chemical Technology
Kugel Timothy J.
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