649762-22-1Relevant academic research and scientific papers
Synthesis and characterization of new red-emitting polyfluorene derivatives containing electron-deficient 2-pyran-4-ylidene-malononitrile moieties
Peng, Qiang,Lu, Zhi-Yun,Huang, Yan,Xie, Ming-Gui,Han, Shao-Hu,Peng, Jun-Biao,Cao, Yong
, p. 260 - 266 (2004)
A novel series of red-light-emitting copolymers derived from fluorene and 2-pyran-4-ylidene-malononitrile (PM) have been synthesized through a palladium-catalyzed Suzuki coupling reaction. The polymers were characterized by FT-IR, NMR, and elemental analysis. All these polymers are completely soluble in common organic solvents, such as THF, CH2Cl2, CHCl3, and toluene, and they have good thermal stability with onset decomposition temperature (Td) of 406-407°C and glass-transition temperature (Tg) of 73-186°C. Cyclic voltammetry studies reveal that these copolymers have low-lying LUMO energy levels ranging from -3.53 to -3.57 eV and HOMO energy levels ranging from -5.77 to -5.79 eV, which indicated that they may be promising candidates for electron-transporting or hole-blocking materials in light-emitting diodes. These polymers in thin films can emit strong red photoluminescence (PL) around 641-662 nm with the corresponding additional peaks in the range 704-712 nm upon photoexcitation. Double-layer LEDs fabricated with the configuration of ITO/PEDOT/polymer/Ba/Al can emit red light with external quantum efficiencies of 0.21-0.38%. Preliminary electroluminescent (EL) results show that these polymers are novel promising candidates for red emissive materials in polymer light-emitting diodes.
Assembling Pentatopic Terpyridine Ligands with Three Types of Coordination Moieties into a Giant Supramolecular Hexagonal Prism: Synthesis, Self-Assembly, Characterization, and Antimicrobial Study
Wang, Heng,Liu, Chung-Hao,Wang, Kun,Wang, Minghui,Yu, Hao,Kandapal, Sneha,Brzozowski, Robert,Xu, Bingqian,Wang, Ming,Lu, Shuai,Hao, Xin-Qi,Eswara, Prahathees,Nieh, Mu-Ping,Cai, Jianfeng,Li, Xiaopeng
supporting information, p. 16108 - 16116 (2019/10/11)
Three dimensional (3D) supramolecules with giant cavities are attractive due to their wide range of applications. Herein, we used pentatopic terpyridine ligands with three types of coordination moieties to assemble two giant supramolecular hexagonal prism
Novel efficient green electroluminescent conjugated polymers based on fluorene and triarylpyrazoline for light-emitting diodes
Peng, Qiang,Lu, Zhi-Yun,Huang, Yan,Xie, Ming-Gui,Xiao, Dan,Han, Shao-Hu,Peng, Jun-Biao,Cao, Yong
, p. 396 - 401 (2007/10/03)
A series of novel light-emitting conjugated polymers based on fluorene and triarylpyrazoline were synthesized in good yields through Suzuki coupling reactions. The resulting polymers were characterized by NMR, FT-IR, elemental analysis, DSC, TGA and GPC.
