Compositions – Light transmission modifying compositions – Displaying color change
Reexamination Certificate
2007-06-26
2007-06-26
Gulakowski, Randy (Department: 1712)
Compositions
Light transmission modifying compositions
Displaying color change
C252S301350, C430S056000, C430S072000, C430S073000, C564S308000
Reexamination Certificate
active
10442431
ABSTRACT:
Disclosed are highly efficient multiphoton absorbing compounds and methods of their use. The compounds generally include a bridge of pi-conjugated bonds connecting electron donating groups or electron accepting groups. The bridge may be substituted with a variety of substituents as well. Solubility, lipophilicity, absorption maxima and other characteristics of the compounds may be tailored by changing the electron donating groups or electron accepting groups, the substituents attached to or the length of the pi-conjugated bridge. Numerous photophysical and photochemical methods are enabled by converting these compounds to electronically excited states upon simultaneous absorption of at least two photons of radiation. The compounds have large two-photon or higher-order absorptivities such that upon absorption, one or more Lewis acidic species, Lewis basic species, radical species or ionic species are formed.
REFERENCES:
patent: 3344189 (1967-09-01), Davis
patent: 4046564 (1977-09-01), Turner
patent: 4853308 (1989-08-01), Ong et al.
patent: 5786495 (1998-07-01), Resconi et al.
patent: 6515182 (2003-02-01), Hosokawa et al.
patent: 6657084 (2003-12-01), Hosokawa et al.
patent: 2003/0052311 (2003-03-01), Inagaki et al.
patent: 98101637.1 (1998-09-01), None
patent: 04181260 (1992-06-01), None
patent: 11167992 (1999-06-01), None
patent: WO 92/07651 (1991-05-01), None
patent: WO 98/21521 (1998-05-01), None
Cumpston B H et al: “New Photopolymers Based on Two-Photon Absorbing Chromophores and Application to Three-Dimensional Microfabrication and Optical Storage” Materials Research Society, Pittsburg, PA, US. vol. 488, May 6, 1998, pp. 217-225, XP008000191, ISSN: 0272-9172.
Barlow S et al; “Design, Synthesis and Applications of Two-Photon Absorbing Organic Molecules”; Polymer Preprints, American Chemical Society, US, vol. 39, No. 2, Aug. 19, 1998, p. 1116, XP000878658; ISSN: 0032-3934.
European International Searching Authority, “European Search Report”, cited in corresponding European Patent Application No. EP 99918616.6, dated Jan. 19, 2005, 6 pages.
Cumpston Brian
Lipson Matthew
Marder Seth R
Perry Joseph W
BioTechnology Law Group
California Institute of Technology
Gulakowski Randy
Kugel Timothy J.
Maher David W
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