Compositions – Light transmission modifying compositions – Displaying color change
Reexamination Certificate
2006-03-24
2010-11-02
Choi, Ling-Siu (Department: 1796)
Compositions
Light transmission modifying compositions
Displaying color change
C252S582000, C359S245000, C359S326000, C359S328000, C385S131000, C385S143000, C210S656000
Reexamination Certificate
active
07824582
ABSTRACT:
Unconventional twisted π-electron system electro-optic (EO) chromophores/compounds, compositions and related device structures. Crystallographic analysis of several non-limiting chromophores reveals, for instance, large ring-ring dihedral twist angles and a highly charge-separated zwitterionic structure in the ground state, in both solution phase and solid-state.
REFERENCES:
patent: 6067186 (2000-05-01), Dalton et al.
patent: 2007/0237442 (2007-10-01), Marks et al.
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Albert, IDL; Marks, TJ; and Ratner, MA; Conformationally-Induced Geometric Electron Localization. Interrupted Conjugation, Very Large Hyperpolarizabilities, and Sizable Infrared Absorption in Simple Twisted Molecular Chromophores; J. Am. Chem. Soc., 1997, 3155-3156, vol. 119.
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Keinan et al., “Twisted π-System electro-optic chromophores. A CIS vs. MRD-CI theoretical investigation”, Journal of Molecular Structure (Theochem) 633 (2003) 227235, Aug. 29, 2003, p. 228, chart 1, abstract, p. 233. col. 1.
Kang Hu
Marks Tobin J.
Ahvazi Bijan
Choi Ling-Siu
Northwestern University
Reinhart Boerner Van Deuren s.c.
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