Platinum (II) Di (2-Pyrazolyl) Benzene Chloride Analogs and Uses
Synthesis of platinum(II) di(2-pyrazolyl)benzene chloride and analogs includes forming a 1,3-di-substituted benzene including two aromatic five-membered heterocycles, and reacting the 1,3-di-substituted benzene with an acidic platinum-containing solution to form a luminescent platinum(II) complex. The luminescent platinum(II) complex is capable of emitting blue and white light and can be used as an emitter in a light emitting device.
1 . A luminescent compound comprising:
wherein
is an aromatic heterocycle, the six-membered aromatic ring is a phenyl or pyridinyl group,
and W is —Cl or
2 . The compound of claim 1 , wherein
is selected from the group consisting of
3 . The compound of claim 1 , wherein the compound comprises:
4 . The compound of claim 1 , wherein the compound is phosphorescent.
5 . The compound of claim 1 , wherein the compound is capable of emitting light in the blue range of the visible spectrum.
6 . The compound of claim 1 , wherein the compound is capable of emitting white light.
7 . (canceled)
8 . A light emitting device comprising a luminescent compound comprising:
wherein
is an aromatic heterocycle, the six-membered aromatic ring is a phenyl or pyridinyl group,
and W is —Cl or
9 . The device of claim 8 , wherein
is selected from the group consisting of
10 . The device of claim 8 , wherein the compound is phosphorescent.
11 . The device of claim 8 , wherein the compound is capable of emitting light in the blue range of the visible spectrum.
12 . The device of claim 8 , wherein the compound is capable of emitting white light.
13 . The device of claim 8 , wherein the compound comprises:
14 . The device of claim 8 , wherein the device is an organic light emitting device.
15 . (canceled)
16 . A method of making a platinum(II) complex, the method comprising:
(a) forming an aromatic 1,3-di-substituted six-membered ring, wherein each substituent is an aromatic five-membered heterocycle; and
(b) reacting the 1,3-di-substituted aromatic six-membered ring with an acidic platinum-containing solution to form the platinum(II) complex.
17 . The method of claim 16 , wherein the aromatic five-membered heterocycles are pyrazolyl groups.
18 . The method of claim 16 , wherein the aromatic five-membered heterocycles are selected from the group consisting of substituted pyrazolyl, imidazolyl, substituted imidazolyl, thiazolyl, and substituted thiazolyl groups.
19 . The method of claim 18 , wherein an atom in the six-membered ring is bonded to a heteroatom in each heterocycle.
20 . The method of claim 19 , wherein the six-membered ring is bonded to a nitrogen atom or a sulfur atom in each heterocycle.
21 . The method of claim 16 , wherein the two aromatic heterocycles are the same.
22 . The method of claim 16 , wherein the platinum(II) complex comprises a platinum atom bonded to a carbon atom and two nitrogen atoms.
23 . The method of claim 16 , wherein the aromatic six-membered ring is benzyl group.
24 . The method of claim 23 , wherein the platinum(II) complex is platinum(II) di(2-pyrazolyl)benzene chloride.
25 . The method of claim 23 , wherein the benzene is fluorinated, difluorinated, or methylated.
26 . The method of claim 16 , wherein the aromatic six-membered ring is a pyridinyl group.