Ordinary-temperature-phosphorescent organic material, reversibly thermosensitive recording material, reversibly thermosensitive recording medium, and method of recording in reversibly thermosensitive recording medium
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United States of America Patent
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Aug 14, 2012
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Dec 30, 2010
app pub date -
Nov 28, 2008
filing date -
Nov 28, 2007
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Abstract
The present invention provides an organic material that is characterized by including a rigid matrix and a dye having a phosphorescence lifetime of 0.1 seconds or more in a rigid medium at 77 K and that exhibits such a strong and long-lived phosphorescence as to be recognizable with the naked eyes even at ordinary temperature: namely, an ordinary-temperature-phosphorescent organic material.
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