Synthesis of Polyisoprene Terpenoid Dendrons and their Applications in Oligo(phenylene ethynylene)s as “Shells”
作者:Wen-Yu Chai、Zi-Fa Shi、Peng An、Wei Wang、Lu-Feng Wang、Xiao-Ping Cao
DOI:10.1002/asia.201100480
日期:2012.1.2
functionality, followed by deoxygenation of the resulting tertiary alcohol by triethylsilane and trifluoroacetic acid, then hydrogenation or hydrogenolysis. The dendrons were also attached to oligo(phenylene ethynylene)s (OPEs) so as to function as protective shells to allow fine tuning of the nanoscopic environment around the OPE moiety, and to exert precise control of the packing density and intermolecular
描述了新型聚异戊二烯萜类化合物(PIPTP)树突的新型双阶段收敛合成。PIPTP树突具有高度分支的脂族烃骨架和亲水性羟基焦点功能。这些树突具有特定的公式C (5×2 G + 1 -5) H (5×2 G + 2-8)O,并且每个树突层由异戊二烯单元构成。关键的支化步骤包括将烷基金属加成双酯官能团,然后通过三乙基硅烷和三氟乙酸对所得的叔醇进行脱氧,然后进行氢化或氢解。树突还连接到低聚(亚苯基乙炔基)(OPE)上,以用作保护壳,以允许微调OPE部分周围的纳米环境,并精确控制OPE的堆积密度和分子间相互作用核心。荧光量子产率数据表明,与Fréchet树突相比,PIPTP树突对OPE核的封装更好。