Upconversion fluorescent nano-structured material and uses thereof
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United States of America Patent
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Jan 10, 2012
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app pub date -
Oct 17, 2007
filing date -
Oct 17, 2006
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Abstract
Upconversion fluorescent nano-structured material(s) comprising at least one compound of formula (M1)j(M2)kXn:(M3)q and at least one polymer, wherein: each X is the same or different and is selected from the group consisting of: halogen, O, S, Se, Te, N, P and As; each M1, if present, is the same or different and is selected from the group consisting of: Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Ra, O and NH4; each M2 is the same or different and is a metal ion; each M3, independently, is the same or different and is selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; j is 0≦j≦10; k is 1≦k≦10; n is 1≦n≦10; and q is 1≦q≦10. In particular, the polymer is wherein the polymer soluble in polar solvents.
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