GREEN ORGANIC LUMINOPHOR
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United States of America Patent
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Issued Date -
Apr 18, 2002
app pub date -
Apr 6, 2001
filing date -
Apr 6, 2000
priority date (Note) -
Abandoned
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Abstract
The invention is an innovative, economical chemical compound 1-phenyl-5-(p-methoxyphenyl)-3-[1,8-naphthoylene-1',2'-benzimidazol-4-yl]--2-pyrazol of the general formula 1: 1 The compound is an efficient organic luminophor of green emission (.lambda.max.lum>>510 nm) characterized by high quantum yield of photoluminescence: .eta.=0.85 in toluene solution and .eta.=0.78 in solid state (vacuum-deposited film) and large Stokes shift (FIGS. 1 and 2). The luminophor has increased solubility in organic solvents; its luminescence is increased over that of the prior art in, including, but not limited to, powder form, films and in solutions; and in exhibits increased photochemical and chemical stability.
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