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ΪÁ˽â¾öÉÏÊöµÄÎÊÌ⣬²¨¶û¶à´óѧDidier Astruc ½ÌÊÚ¿ÎÌâ×é¾­¹ý¶àÄê¶ÔCuAACµÄDZÐÄÑо¿£¬²»½öÀûÓÃCuAACÖÆ±¸Á˸÷ÖÖpolymer£¬Dendrimer£¬ligands£¬²¢³É¹¦µØÓ¦ÓÃËùÖÆ±¸µÄpolymer£¬Dendrimer£¬ligandsÀ´Îȶ¨ÄÉÃ׿ÅÁ£²¢³É¹¦µØÓÃ×÷´ß»¯¼Á£¬Ïà¹Ø³É¹ûÒÑÂ½Ðø·¢±íÔÚJACS£¬ AngewºÍNat. communµÈÖøÃûÆÚ¿¯¡£×îÐÂJACSµÄArticle ASAP¿¯·¢Á˸ÿÎÌâ×éµÄ¡°Recyclable Catalytic Dendrimer Nanoreactor for Part-Per-Million CuI Catalysis of ¡°Click¡± Chemistry in Water¡±£¬¸ÃÑо¿³É¹ûͨ¹ýʹÓÃDendrimer×÷Ϊnanoreactor¼«´óµØ½µµÍÁË´ß»¯¼ÁµÄ·´Ó¦ÓÃÁ¿£¨ÖÁppm¼¶±ð£©£¬²¢ÇҴ˼«µÍµÄ´ß»¯¼ÁʹÓÃÁ¿´ß»¯Ë®ÖеÄclick·´Ó¦¼°Æä¸ßЧ£¬¼«´óµØÍØÕ¹ÁËclick·´Ó¦ÔÚÉúÎïѧÖеÄÓ¦Óá£Éó¸åÈËÒ»ÖÂÆÀ¼Û¡°This group has a well-gained reputation in the synthesis and use of dendrimers and nanoparticles for catalysis, and this work reflects it.¡±¡£·¢À´Óë´ó¼Ò¹²Í¬ÉÍÎö£¬Ï£Íû¶Ô´ó¼ÒÓÐËù°ïÖú¡£
Abstract£ºUpon catalyst and substrate encapsulation, an amphiphilic dendrimer containing 27 triethylene glycol termini and 9 intradendritic triazole rings serves as a catalytic nanoreactor by considerably accelerating the CuI-catalyzed alkyne¨Cazide cycloaddition (CuAAC) ¡°click¡± reactions of various substrates in water using the catalyst Cu(hexabenzyltren)Br (tren = triaminoethylamine). Moreover this recyclable nanoreactor with intradendritic triazole rings strongly also activates the simple Sharpless¨CFokin catalyst CuSO4 + sodium ascorbate in water under ambient conditions leading to exceptional TONs up to 510 000. This fully recyclable catalytic nanoreactor allows to considerably decrease the amount of this cheap copper catalyst down to industrially tolerable residues, and some biomedical and cosmetic applications are exemplified.CuAAC click ·´Ó¦µÄÖØ´óÍ»ÆÆ--×îÐÂJACS ASAP
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  • 2014-08-24 16:51:15, 1.64 M
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  • 2014-08-24 16:51:35, 3.68 M

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