A facile method for the synthesis of pillar[6]arenes was developed. A series of pillar[6]arenes were prepared with FeC13 as catalyst and chloroform as solvent at room temperature in moderate yields （30%-40%）. Their ...A facile method for the synthesis of pillar[6]arenes was developed. A series of pillar[6]arenes were prepared with FeC13 as catalyst and chloroform as solvent at room temperature in moderate yields （30%-40%）. Their host-guest properties with n-cetyltrimethyl ammonium bromide were investigated by 1 HNMR. The results showed that high selectivity in the host-guest relationship became apparent between pillar[6]arenes and pillar[5]arenes based on the different size of the inner cavity.展开更多
Three novel triphenylamine-based D-A-r-A-featured dyes （Zl-Z3） have been designed, synthesized and characterized for use in dye-sensitized solar cells. Benzothiazole was incorporated as an additional acceptor, which...Three novel triphenylamine-based D-A-r-A-featured dyes （Zl-Z3） have been designed, synthesized and characterized for use in dye-sensitized solar cells. Benzothiazole was incorporated as an additional acceptor, which greatly enhanced the molar ex- tinction coefficient of the dyes. Various conjugated linkers, such as benzene, furan and thiophene, were also introduced to con- figure the novel D-A-n-A framework in order to prolong electron flow and active transportation. Among all dyes, Z2 contain- ing a thiophene linker exhibited the maximum overall conversion efficiency （r/） of 4.16% （Jsc = 9.27 mA cm-2, Voc = 642 mV, FF = 0.70） under standard global AM 1.5 G solar condition.展开更多
A novel three-component copolymer (PFDP), derived from 9,9-dihexylfluorene, diketopyrrolopyrrole( DPP), and 10-octylphenothiazine, was synthesized through palladium-catalyzed Suzuki polycondensation in good yields. PF...A novel three-component copolymer (PFDP), derived from 9,9-dihexylfluorene, diketopyrrolopyrrole( DPP), and 10-octylphenothiazine, was synthesized through palladium-catalyzed Suzuki polycondensation in good yields. PFDP possessed moderate molecular weight and polydispersity, well-defined structure, and excellent thermal properties with an onset decomposition temperature at 357°C. PFDP in thin film exhibited red photoluminescence from DPP chromophore exclusively, with a peak at 602 nm. Electron-rich phenothiazine units sighificantly improved the injection and transport of holes by incorporating into polymer backbone. Light-emitting device was fabricated in the ITO/PEDOT: PSS/PVK/ polymer/Ba/Al configuration using PFDP as the emitting layer. The device based on PFDP showed red emission [CIE coordinate value (0.62, 0.38)] that was close to the standard red (0.66, 0.34). The results on electroluminescent performance revealed that PFDP may be a promising candidate for the red emitter with a maximum brightness of 259 cd/m2 and a maximum external quantum efficiency of 0.25%.展开更多
基金supported by the National Natural Science Foundation ofChina (20872038,21072064)
文摘A facile method for the synthesis of pillar[6]arenes was developed. A series of pillar[6]arenes were prepared with FeC13 as catalyst and chloroform as solvent at room temperature in moderate yields （30%-40%）. Their host-guest properties with n-cetyltrimethyl ammonium bromide were investigated by 1 HNMR. The results showed that high selectivity in the host-guest relationship became apparent between pillar[6]arenes and pillar[5]arenes based on the different size of the inner cavity.
基金supported by the National Natural Science Foundation of China (20872038, 20873183, 21072064)the Fund from Guangzhou Science and Technology Project, China (2012J4100003)
文摘Three novel triphenylamine-based D-A-r-A-featured dyes （Zl-Z3） have been designed, synthesized and characterized for use in dye-sensitized solar cells. Benzothiazole was incorporated as an additional acceptor, which greatly enhanced the molar ex- tinction coefficient of the dyes. Various conjugated linkers, such as benzene, furan and thiophene, were also introduced to con- figure the novel D-A-n-A framework in order to prolong electron flow and active transportation. Among all dyes, Z2 contain- ing a thiophene linker exhibited the maximum overall conversion efficiency （r/） of 4.16% （Jsc = 9.27 mA cm-2, Voc = 642 mV, FF = 0.70） under standard global AM 1.5 G solar condition.
基金Supported by the National Natural Science Foundation of China (Grant No. 20872038)Science and Technology Planning Project of Guangdong Province, China (Grant No. 2007A010500011)Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20060561024)
文摘A novel three-component copolymer (PFDP), derived from 9,9-dihexylfluorene, diketopyrrolopyrrole( DPP), and 10-octylphenothiazine, was synthesized through palladium-catalyzed Suzuki polycondensation in good yields. PFDP possessed moderate molecular weight and polydispersity, well-defined structure, and excellent thermal properties with an onset decomposition temperature at 357°C. PFDP in thin film exhibited red photoluminescence from DPP chromophore exclusively, with a peak at 602 nm. Electron-rich phenothiazine units sighificantly improved the injection and transport of holes by incorporating into polymer backbone. Light-emitting device was fabricated in the ITO/PEDOT: PSS/PVK/ polymer/Ba/Al configuration using PFDP as the emitting layer. The device based on PFDP showed red emission [CIE coordinate value (0.62, 0.38)] that was close to the standard red (0.66, 0.34). The results on electroluminescent performance revealed that PFDP may be a promising candidate for the red emitter with a maximum brightness of 259 cd/m2 and a maximum external quantum efficiency of 0.25%.
