Benzocarbazole-intercalated layered double hydroxides composite luminescent material and its preparation method
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United States of America Patent
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Nov 13, 2012
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May 27, 2010
app pub date -
Jul 7, 2009
filing date -
Nov 25, 2008
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Expired
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Abstract
The present invention discloses a benzocarbazole-intercalated layered double hydroxides (LDHs) composite luminescent material and its preparation method. The detailed procedure comprises preparing divalent and trivalent metal cation solution A and glycol solution B of sodium 2-hydroxy benzo[a]carbazole-3-carboxylate, mixing the solutions A and B to obtain solution C, slowly adding the prepared NaOH solution dropwise into the solution C, regulating pH of the resultant after dropwise addition to obtain slurry D, allowing the slurry D to react under water bath or microwave temperature-controlled heating condition, centrifuging and washing the obtained product, and drying in vacuum to obtain 2-hydroxy benzo[a]carbazole-3-carboxylate anion intercalated LDHs composite material. The method implements the immobilization of sodium 2-hydroxy benzo[a]carbazole-3-carboxylate, effectively improves thermal stability of the luminescent dye molecules, and reduces fluorescence quenching caused by aggregation of the dye molecules.
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