Polyanionic Aryl Ether Metallodendrimers Based on Cobaltabisdicarbollide Derivatives. Photoluminescent Properties
作者:Emilio José Juárez-Pérez、Clara Viñas、Francesc Teixidor、Rosa Santillan、Norberto Farfán、Arturo Abreu、Rebeca Yépez、Rosario Núñez
DOI:10.1021/ma9019575
日期:2010.1.12
Fluorescent Fréchet-type poly(aryl ether) dendrimers that incorporate the 1,3,5-triphenylbenzene as core molecule and 3, 6, 9, or 12 terminal allyl ether groups have been prepared in very good yield by following the Fréchet convergent approach. Regiospecific hydrosylilation reactions on the allyl ether functions with the cobaltabisdicarbollide derivative Cs[1,1′-μ-SiMeH-3,3′-Co(1,2-C2B9H10)2] lead
遵循Fréchet收敛方法,以很高的收率制备了以1,3,5-三苯苯为核心分子和3、6、9或12个末端烯丙基醚基团的荧光Fréchet型聚(芳基醚)树状聚合物。烯丙基双二糖脂衍生物Cs [1,1'-μ-SiMeH-3,3'-Co(1,2-C 2 B 9 H 10)2对烯丙基醚的区域特异性加氢合反应]导致不同世代的Féchet型聚阴离子金属树枝状大分子装饰有3、6和9个钴双二咔唑单元。起始树枝状聚合物在室温下在紫外线照射下显示出光致发光特性;然而,在用钴双双糖脂衍生物官能化之后,荧光性质被淬灭。产品通过FTIR,NMR和UV-vis光谱学进行了充分表征。对于金属树枝状大分子,UV-vis吸收是评估周边附着在树枝状大分子结构上的钴双二糖脂单元的实验数量的一个很好的工具,从而证实了树枝状大分子的统一特性。由于这些化合物的阴离子特性和富含硼的含量,