Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2007-08-21
2007-08-21
Dye, Rena (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C252S301350, C257S040000, C257S103000, C528S422000, C526S310000
Reexamination Certificate
active
10193761
ABSTRACT:
A polymeric fluorescent substance exhibiting visible fluorescence in the solid state, having polystyrene reduced number average molecular weight of 1×103to 1×108, and comprising one or more repeating units of following formula (1),wherein Ar1and Ar2each independently represent an arylene group or the like; Ar3represents an aryl group or the like having one or more substituents of formula (2) as nuclear substitution; X represents —CR1═CR2— or —C≡C—; and n is 0 or 1,in-line-formulae description="In-line Formulae" end="lead"?—Y—Ar4 (2)in-line-formulae description="In-line Formulae" end="tail"?wherein Ar4represents an aryl group or the like; and Y represents —CR3═CR4— or —C≡C—. The triarylamine type polymeric fluorescent substance is excellent in quantum yield of fluorescence and in light emitting efficiency when made into a device.
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Doi Shuji
Noguchi Takanobu
Dye Rena
Sumitomo Chemical Company Limited
Thompson Camie S.
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