以氰基乙酸乙酯、2-丁酮、二乙胺和硫粉为原料,乙醇为溶剂,在一定条件下合成了4,5-二甲基-3-乙氧羰基噻吩胺,然后与六种不同的芳醛反应,合成了六种相应的Schiff碱。通过MS、~1 H NMR、IR和UV等对合成的化合物进行表征,结果表明目标产物...以氰基乙酸乙酯、2-丁酮、二乙胺和硫粉为原料,乙醇为溶剂,在一定条件下合成了4,5-二甲基-3-乙氧羰基噻吩胺,然后与六种不同的芳醛反应,合成了六种相应的Schiff碱。通过MS、~1 H NMR、IR和UV等对合成的化合物进行表征,结果表明目标产物结构与理论相符。然后对这六种目标产物进行荧光光谱性能测试,结果表明这些化合物具有较强荧光;并且通过研究溶液的极性对目标化合物荧光强度的影响,发现目标化合物的荧光强度随着溶液极性增大而增强。展开更多
A new star-shaped donor-acceptor molecule has been synthesized for application as the donor material in solution-processed bulk-heterojunction organic solar cells (OSCs). The molecule consists of a triphenylamine (TPA...A new star-shaped donor-acceptor molecule has been synthesized for application as the donor material in solution-processed bulk-heterojunction organic solar cells (OSCs). The molecule consists of a triphenylamine (TPA) unit as the core and a donor unit with three arms containing benzo[1,2,5]thiadiazole (BT) acceptor units and 5,5''-dihexyl-2,2′:3′,2″-terthiophene (tTh) end groups. The molecule, denoted S(TPA-BT-tTh), exhibits a broad absorption band in the wavelength range 300-650 nm and high hole mobility of 1.1×10 -4 cm2 V -1 s 1 . An OSC device based on S(TPA-BT-tTh) as donor and [6,6]-phenyl C71 -butyric acid methyl ester (PC 70 BM) as the acceptor (1:3, w/w) exhibited a power conversion efficiency of 2.28% with a short circuit current density of 6.39 mA/cm2 under illumination of AM.1.5, 100 mW/cm2 .展开更多
Two new multibranched thiophene-based triarylamine derivatives with 1,3,5-triazine core are synthesized and characterized. Their one-and two-photon absorption properties and aggregation-induced emission effect have be...Two new multibranched thiophene-based triarylamine derivatives with 1,3,5-triazine core are synthesized and characterized. Their one-and two-photon absorption properties and aggregation-induced emission effect have been investigated. Both the STAPA-based compounds are AIE active. The two-photon absorption (2PA) cross sections measured by the open aperture Z-scan technique are determined to be 620 and 1610 GM for STAPA-a and STAPA-b in chloroform,respectively, which dramatically increase with the introduction of alkyl chains. The relationship between their structures and properties on one-and two-photon absorption and aggregation-induced emission is discussed, which allows us to examine the effect of introducing alkyl chains. In addition, solvent effects also show a significant influence on the 2PA cross section. The two compounds with excellent AIE and 2PA properties provide attractive alternatives for the biophotonic materials.展开更多
We report red-emission organic light-emitting diodes (OLEDs) based on solution-processable organic molecules with triphenylamine (TPA) as core and benzothiadiazole-(4-hexyl)thiophene (BT-4HT) as arms.Bi-armed molecule...We report red-emission organic light-emitting diodes (OLEDs) based on solution-processable organic molecules with triphenylamine (TPA) as core and benzothiadiazole-(4-hexyl)thiophene (BT-4HT) as arms.Bi-armed molecule B(TPA-BT-4HT) and star-shaped (tri-armed) molecule S(TPA-BT-4HT) both show pure red-emission peaked at 646 and 657 nm,respectively.The red-emission OLED with S(TPA-BT-4HT) as the emitting layer displays a higher maximum luminance of ca.7794 cd/m2 and a maximum EL efficiency of 0.91 cd/A.展开更多
文摘以氰基乙酸乙酯、2-丁酮、二乙胺和硫粉为原料,乙醇为溶剂,在一定条件下合成了4,5-二甲基-3-乙氧羰基噻吩胺,然后与六种不同的芳醛反应,合成了六种相应的Schiff碱。通过MS、~1 H NMR、IR和UV等对合成的化合物进行表征,结果表明目标产物结构与理论相符。然后对这六种目标产物进行荧光光谱性能测试,结果表明这些化合物具有较强荧光;并且通过研究溶液的极性对目标化合物荧光强度的影响,发现目标化合物的荧光强度随着溶液极性增大而增强。
基金supported by the National Natural Science Foundation of China (50933003 and 21021091)the support from MOE, Jiangsu Province, and SEU (NCET-09-0294, 20100092120037,XNY-48-037 and Seujq201103)
文摘A new star-shaped donor-acceptor molecule has been synthesized for application as the donor material in solution-processed bulk-heterojunction organic solar cells (OSCs). The molecule consists of a triphenylamine (TPA) unit as the core and a donor unit with three arms containing benzo[1,2,5]thiadiazole (BT) acceptor units and 5,5''-dihexyl-2,2′:3′,2″-terthiophene (tTh) end groups. The molecule, denoted S(TPA-BT-tTh), exhibits a broad absorption band in the wavelength range 300-650 nm and high hole mobility of 1.1×10 -4 cm2 V -1 s 1 . An OSC device based on S(TPA-BT-tTh) as donor and [6,6]-phenyl C71 -butyric acid methyl ester (PC 70 BM) as the acceptor (1:3, w/w) exhibited a power conversion efficiency of 2.28% with a short circuit current density of 6.39 mA/cm2 under illumination of AM.1.5, 100 mW/cm2 .
基金the National Natural Foundation of China (2116110444, 21172073)National Basic Research Program of China (973 program, 2013CB733700, 2013CB834701)the Fundamental Research Funds for the Central Universities (WJ0913001)
文摘Two new multibranched thiophene-based triarylamine derivatives with 1,3,5-triazine core are synthesized and characterized. Their one-and two-photon absorption properties and aggregation-induced emission effect have been investigated. Both the STAPA-based compounds are AIE active. The two-photon absorption (2PA) cross sections measured by the open aperture Z-scan technique are determined to be 620 and 1610 GM for STAPA-a and STAPA-b in chloroform,respectively, which dramatically increase with the introduction of alkyl chains. The relationship between their structures and properties on one-and two-photon absorption and aggregation-induced emission is discussed, which allows us to examine the effect of introducing alkyl chains. In addition, solvent effects also show a significant influence on the 2PA cross section. The two compounds with excellent AIE and 2PA properties provide attractive alternatives for the biophotonic materials.
基金supported by the National Natural Science Foundation of China (50633050,50803071 and 20721061)
文摘We report red-emission organic light-emitting diodes (OLEDs) based on solution-processable organic molecules with triphenylamine (TPA) as core and benzothiadiazole-(4-hexyl)thiophene (BT-4HT) as arms.Bi-armed molecule B(TPA-BT-4HT) and star-shaped (tri-armed) molecule S(TPA-BT-4HT) both show pure red-emission peaked at 646 and 657 nm,respectively.The red-emission OLED with S(TPA-BT-4HT) as the emitting layer displays a higher maximum luminance of ca.7794 cd/m2 and a maximum EL efficiency of 0.91 cd/A.
