4517-27-5Relevant articles and documents
Stacking of a benzenehexacarboxylic acid core in the crystal structure of benzenehexacarboxylic acid α-aminomethyl isobutyrate amide (MA-Aib6)-sodium nitrate complex
Ranganathan,Muraleedharan,Chandrashekhar Rao,Vairamani,Karle,Gilardi
, p. 2544 - 2545 (2001)
MA-Aib6 forms discrete stacks with sandwiched water, sodium and nitrate ions, presenting a novel profile, where nine out of the 12 binding sites, of the six amides present, are involved in bonding with water, sodium and nitrate ions, with no in
Excited State Luminescence of Multi-(5-phenyl-1, 3, 4-oxadiazo-2-yl) benzenes in an Electron-Donating Matrix: Exciplex or Electroplex?
Yang, Chih-Chiang,Hsu, Chia-Jung,Chou, Pi-Tai,Cheng, Hsu Chun,Su, Yuhlong Oliver,Leung, Man-Kit
experimental part, p. 756 - 768 (2010/06/21)
Multi-(5-phenyl-1, 3, 4-oxadiazo-2-yl)benzenes show emission in organic solvents from ultraviolet to blue (339-447 nm). The reduction potentials E 1/2red cover a large range of -2.11 V for 2, 5-diphenyl-1, 3, 4-oxadiazole to -0.76 V for 1, 2, 3, 4, 5, 6-hexa(5-phenyl-1, 3, 4-oxadiazo-2-yl)benzene. An unexpectedly wide spectral range of the oxadiazole (OXD) exciplex emissions in PVK is observed, ranging from 406 to 603 nm. The OXDs also exhibit similar electroluminescence (EL) when blended into polyvinylcarbazole (PVK). A linear correlation between the λ max of the electroluminescence and photoluminescence is observed, implying that the emission mechanisms in both processes are similar. In addition, the linear correlation between the E1/2red versus λmax of EL (eV) reflected that the term of the charge-transfer configuration of the contact electron-hole pair plays a major role in the exciplex emission. The exciplex EL of 1, 2, 5-tri(5-phenyl-1, 3, 4-oxadiazo-2-yl)benzene (5) could be as high as 1.0 cd/A. Since the exciplex emission usually has a large Stokes shift, this provides a window for us to generate duo emissions for near white light EL with high efficiency. Among the devices we tried, the device of PVK/2-tert-butylphenyl-5-biphenyl-1, 3, 4-oxadiazole/5/2, 5, 8, 11-tetra-tert-butylperylene (100:40:40:4) gave EL with good current efficiency of 1.63 cd/A.
