Catalytic activity of recyclable resorcinarene-protected antibacterial Pd nanoparticles in C-C coupling reactions  

间苯二酚保护的抗菌Pd纳米粒子催化C-C偶联反应活性(英文)

作　　者：Urvi Panchal Krunal Modi Manthan Panchal Viren Mehta Vinod K.Jain 

机构地区：[1]古吉拉特大学科学学院化学系

出　　处：《Chinese Journal of Catalysis》2016年第2期250-257,共8页催化学报（英文）

基　　金：financial assistance provided by UGC(University Grant Commission);DRDO (Defence Research Development Organisation),New Delhi

摘　　要：Novel tetra-methoxy resorcinarene tetra-hydrazide（TMRTH） has been synthesized and used as a reducing agent and a capping agent for the synthesis of water-dispersible stable palladium nanoparticles（PdNPs）.The TMRTH-PdNPs were characterized by UV-Vis spectroscopy,transmission electron microscopy,energy-dispersive X-ray spectroscopy,and powder X-ray diffraction.The synthesized nanoparticles are polydispersible with a size of 5 ± 2 nm and were found to be recyclable over five cycles maintaining a catalytic activity in the Suzuki-Miyuara cross-coupling reaction.The nanocatalyst was superior in catalytic performance to conventional palladium catalysts with respect to reaction time,catalyst loading and recyclability.TMRTH-PdNPs show promise for their use in biological applications as they exhibit good antibacterial activity against gram-positive bacteria.合成了新型四甲氧基间苯二酚-四酰肼(TMRTH),并作为还原剂和封端剂用于合成水分散性稳定的Pd纳米粒子(PdNPs).采用紫外-可见光谱、透射电镜、能量散射谱和粉末X射线衍射对所得TMRTH-PdNPs样品进行了表征.结果表明,所制纳米粒子具有多分散性,粒径为5±2 nm,并在Suzuki-Miyuara交叉偶联反应中可重复使用5次,具有较高的催化效率.该纳米催化剂在反应时间、催化剂用量和可重复使用性能等方面优于常规Pd催化剂.另外,TMRTH-PdNPs样品对革兰(氏)阳性菌具有较好的抗菌活性,因而有望用于一些生物领域.

关 键 词：Palladium nanoparticle RESORCINARENE Suzuki-Miyuara cross-coupling reaction NANOCATALYSIS RECYCLABILITY 

分 类 号：O621.251[理学—有机化学]