A sextuple hydrogen bonding molecular duplex bearing 1,8-naphthalimide moieties and polymer light-emitting diode based on it
作者： Jingjing Liu , Yi Wang , Guangdong Lei , Junbiao Peng , Yan Huang
DOI: 10.1039/B910045H
关键词:
摘要: In this paper, the molecular structure of a 1,8-naphthalimide fluorophore modified sextuple H-bond self-assembly homodimer, comprising two linear oligoamide strands bearing arrays on one edge with complementary hydrogen bond sequences DDADAA and AADADD, is characterized via1H NMR, ESI-MS, 13C elementary analysis. The target duplex emits strong yellowish green light emission peaks at 518 nm 535 under UV photoexcitation in solution solid film, respectively, its photoluminescence quantum efficiency (solid state) has been enhanced greatly compared to small counterpart (0.637 versus 0.324). Employing as emitting dopants, polymer light-emitting diodes (PLED) device configuration ITO/PEDOT:PSS (50 nm)/PFO + dopant (5wt%) (80 nm)/CsF (3 nm)/Al (150 nm) have fabricated. results indicate that PLED emitter dramatically improved performance, for example, much higher external electroluminescence (QEext) 1.87% (ph/el), lower turn-on voltage 6.4 V, (QEext: 0.12%; voltage: 15 V), suggesting incorporation motif an effective way design electroluminescent materials.
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