{HEAD ~ The present invention} is directed to novel organometallic luminescent materials, and, more particularly, to {TAIL ~ a novel organometallic luminescent material} having the capability of emitting a wide range of colors including blue and green light, and high thermal stability, and an organic luminescent device containing same 
is directed to
{ HEAD ~ The present invention } is directed to novel organometallic luminescent materials , and , more particularly , to { TAIL ~ a novel organometallic luminescent material } having the capability of emitting a wide range of colors including blue and green light , and high thermal stability , and an organic luminescent device containing same
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