A new stilbene derivative containing triphenylamine segment (TPS) was synthesized. Photochemical and electrochemical properties were also studied. The results showed that TPS was a convenient hole transport and emissi...A new stilbene derivative containing triphenylamine segment (TPS) was synthesized. Photochemical and electrochemical properties were also studied. The results showed that TPS was a convenient hole transport and emission material when used with Alq3 as emission material and with PBD as electron transport material respectively. \;展开更多
Two new resveratrol analougues,t-butyl 4-[(E)-2-(3,4,5-trimethoxyphenyl)vinyl]phenoxy i-butyrate and ethyl 4-[(E)-2-(3,4,5-trimethoxyphenyl)vinyl]phenoxy n-butyrate,are synthesized from 3,4,5-trimethoxybenzaldehyde an...Two new resveratrol analougues,t-butyl 4-[(E)-2-(3,4,5-trimethoxyphenyl)vinyl]phenoxy i-butyrate and ethyl 4-[(E)-2-(3,4,5-trimethoxyphenyl)vinyl]phenoxy n-butyrate,are synthesized from 3,4,5-trimethoxybenzaldehyde and p-nitrotoluene via mutil-steps including condensation,catalytic reduction,diazotization,hydrolyzation,nucleophilic substitution.The effect of the new compounds on HL-60 and A549 cell proliferation are tested by MTT.The results show that the two new compounds exhibite the activities of anti-tumor proliferation.展开更多
以6-氟-4-氯喹唑啉与反式-4-(2-芳基乙烯基)苯胺类化合物为原料,经胺化反应,合成了4-[4-((E-)3,4,5-三甲氧基苯乙烯基)]苯氨基-6-氟喹唑啉等六种新型4-芳氨基-6-氟喹唑啉类衍生物,收率55%～76%,其结构利用1 H NMR,IR和元素分析进行确证....以6-氟-4-氯喹唑啉与反式-4-(2-芳基乙烯基)苯胺类化合物为原料,经胺化反应,合成了4-[4-((E-)3,4,5-三甲氧基苯乙烯基)]苯氨基-6-氟喹唑啉等六种新型4-芳氨基-6-氟喹唑啉类衍生物,收率55%～76%,其结构利用1 H NMR,IR和元素分析进行确证.1 H NMR分析表明,化合物在δ9.74～9.79出现的单峰为4位的—NH所产生;IR谱图中,化合物在3 618～3 278cm-1出现一个吸收峰,同样证明了目标化合物的生成.展开更多
Stiff-stilbene derivatives have been widely explored as molecular rotors, molecular force probes and optical switches with excellent performance. However, their function as fluorophores is poorly understood. In the pr...Stiff-stilbene derivatives have been widely explored as molecular rotors, molecular force probes and optical switches with excellent performance. However, their function as fluorophores is poorly understood. In the present work, we design three stiffstilbene derivatives and study their photophysical properties. These compounds exhibit very weak emission in solution but significantly enhanced monomer emission in viscous solvent, bright excimer emission in aggregates and at solid state. Detailed spectroscopic studies, single crystal structural analysis, powder X-ray diffraction(XRD) as well as effects of substituents have been carefully examined. They provide direct evidence that intermolecular interactions and molecular packing, which can restrict bond vibration and rotation, are responsible for the bright aggregation-induced emission.展开更多
文摘A new stilbene derivative containing triphenylamine segment (TPS) was synthesized. Photochemical and electrochemical properties were also studied. The results showed that TPS was a convenient hole transport and emission material when used with Alq3 as emission material and with PBD as electron transport material respectively. \;
文摘Two new resveratrol analougues,t-butyl 4-[(E)-2-(3,4,5-trimethoxyphenyl)vinyl]phenoxy i-butyrate and ethyl 4-[(E)-2-(3,4,5-trimethoxyphenyl)vinyl]phenoxy n-butyrate,are synthesized from 3,4,5-trimethoxybenzaldehyde and p-nitrotoluene via mutil-steps including condensation,catalytic reduction,diazotization,hydrolyzation,nucleophilic substitution.The effect of the new compounds on HL-60 and A549 cell proliferation are tested by MTT.The results show that the two new compounds exhibite the activities of anti-tumor proliferation.
文摘以6-氟-4-氯喹唑啉与反式-4-(2-芳基乙烯基)苯胺类化合物为原料,经胺化反应,合成了4-[4-((E-)3,4,5-三甲氧基苯乙烯基)]苯氨基-6-氟喹唑啉等六种新型4-芳氨基-6-氟喹唑啉类衍生物,收率55%～76%,其结构利用1 H NMR,IR和元素分析进行确证.1 H NMR分析表明,化合物在δ9.74～9.79出现的单峰为4位的—NH所产生;IR谱图中,化合物在3 618～3 278cm-1出现一个吸收峰,同样证明了目标化合物的生成.
基金supported by the Ministry of Science and Technology of China(2017YFA0206903)the National Natural Science Foundation of China(21871280,21861132004)+2 种基金the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB17000000)the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences(QYZDY-SSW-JSC029)K.C.Wong Education Foundation
文摘Stiff-stilbene derivatives have been widely explored as molecular rotors, molecular force probes and optical switches with excellent performance. However, their function as fluorophores is poorly understood. In the present work, we design three stiffstilbene derivatives and study their photophysical properties. These compounds exhibit very weak emission in solution but significantly enhanced monomer emission in viscous solvent, bright excimer emission in aggregates and at solid state. Detailed spectroscopic studies, single crystal structural analysis, powder X-ray diffraction(XRD) as well as effects of substituents have been carefully examined. They provide direct evidence that intermolecular interactions and molecular packing, which can restrict bond vibration and rotation, are responsible for the bright aggregation-induced emission.
