Fluorescent polymers soluble in an aqueous solution and a method for the production thereof
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United States of America Patent
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Mar 13, 2012
Grant Date -
Nov 27, 2008
app pub date -
Jun 30, 2006
filing date -
Jul 4, 2005
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Abstract
The invention relates to fluorescent polymers soluble in an aqueous solution carrying at least 5 fluorophores which are distributed on the polymer and which exhibit the following properties:
- the fluorophores are water-soluble,the fluorophores are not self-associated in water at a concentration of less than or equal to 10−4 mol/l, preferably at a concentration of less than or equal to 10−3 mol/l,the fluorophores which are free in the aqueous solution have a molar extinction coefficient of greater than 1000 M−1·cm−1, preferably greater than 5000 M−1·cm−1,the fluorophores which are free in the aqueous solution have a quantum yield of greater than 0.3, preferably greater than 0.6,said polymers having a fluorescence amplification factor of greater than or equal to 0.35 per kg/mol of polymer, preferably greater than 0.45 per kg/mol of polymer.
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