MeS2B(p-4,4′-biphenyl-NPh(1-naphthyl)):: A multifunctional molecule for electroluminescent devices
MeS2B(p-4,4′-biphenyl-NPh(1-naphthyl)):: A multifunctional molecule for electroluminescent devices
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DOI：
10.1021/cm048617t
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发表时间：
2005-01-11
影响因子：
8.6
通讯作者：
Vamvounis, G
中科院分区：
文献类型：
--
作者：
Jia, WL;Feng, XD;Vamvounis, G
合成了一种新型发光分子MES(2)B(p-4，4‘-联苯基-NPH(1-萘基))，(BNPB)，它含有NPB的部分官能团(NPB=N，N’-二-1-萘基-N，N‘-二苯基联苯胺)和一个三配位的硼中心。BNPB是一种明亮的蓝色发射体，发射波长为452 nm，在溶液中的发光量子产率为95%，在固体中的发光量子产率为31%。BNPB是一种非晶态材料，很容易通过溶液浇注或真空气相沉积形成薄膜。制备了结构为ITO/BNPB/LiF/Al的单层EL器件A，B为ITO/NPB/BNPB/Ag和C为ITO/BNPB/Alq(3)/LiF/Al的两个双层EL器件B和C，以及结构为ITO/NPB/BNPB/Alq(3)/LiF/Al的三层器件D，并对其性能进行了评价。器件A产生微弱的蓝色电致发光(EL)。器件B产生与器件A相同的亮蓝色EL，器件C产生典型的ALQ(3)绿色EL。由于BNPB区和ALQ(3)区的双重发射，器件D产生了宽带白蓝色电致发光。器件A-D表明，BNPB除了是EL器件的蓝色发射体外，还能够传输空穴和电子。
Mes(2)B(p-4,4'-biphenyl-NPh(1-naphthyl)), (BNPB) a novel luminescent molecule that contains part of the well-known NPB functionality (NPB = N,N'-di-1-naphthyl-N,N'-diphenylbenzidine) and a three-coordinate boron center has been synthesized. BNPB is a bright blue emitter with lambda(max) (emission) = 452 nm and a photoluminescent quantum yield of 95% in solution and 31% in the solid state. BNPB is an amorphous material and forms films readily via either solution casting or vacuum vapor deposition. A single layer EL device A with the device structure of ITO/BNPB/LiF/Al, two double-layer EL devices B and C with the device structure of ITO/NPB/BNPB/Ag for B and ITO/BNPB/Alq(3)/LiF/Al for C, and a triple-layer device D with the structure of ITO/NPB/BNPB/Alq(3)/LiF/Al have been fabricated and their performance has been evaluated. Device A produces a weak blue electroluminescence (EL). Device B produces a bright blue EL, identical to that of device A. Device C produces a green EL, typical of Alq(3). Device D produces a broadband whitish-blue EL attributable to dual emission from the BNPB zone and the Alq(3) zone. Devices A-D demonstrate that BNPB is capable of transporting both holes and electrons in addition to being a blue emitter for EL devices.