RNA-mediated metal-metal bond formation in the synthesis of hexagonal palladium nanoparticles (Retracted Article)
RNA-mediated metal-metal bond formation in the synthesis of hexagonal palladium nanoparticles (Retracted Article)
复制标题
DOI：
10.1126/science.1095678
复制
发表时间：
2004-05-07
期刊：
影响因子：
56.9
通讯作者：
Eaton, BE
中科院分区：
文献类型：
--
作者：
Gugliotti, LA;Feldheim, DL;Eaton, BE
已经发现RNA序列介导六方钯纳米颗粒的生长。利用体外选择技术，通过8个周期的选择，进化出一个类似于10（14）个独特RNA序列的初始文库，以产生几个活性序列家族。五个家族中，所有具有代表性的成员都能形成结晶的六边形钯血小板。钯颗粒生长发生在常温、无内源还原剂、低浓度金属前驱体（100微摩尔）的水溶液中。相对于金属前体，RNA浓度明显较低（1微摩尔），但微米大小的六方钯晶体颗粒形成迅速（7.5 ~ 1分钟）。
RNA sequences have been discovered that mediate the growth of hexagonal palladium nanoparticles. In vitro selection techniques were used to evolve an initial library of similar to10(14) unique RNA sequences through eight cycles of selection to yield several active sequence families. Of the five families, all representative members could form crystalline hexagonal palladium platelets. The palladium particle growth occurred in aqueous solution at ambient temperature, without any endogenous reducing agent, and at low concentrations of metal precursor (100 micromolar). Relative to metal precursor, the RNA concentration was significantly lower ( 1 micromolar), yet micrometer-size crystalline hexagonal palladium particles were formed rapidly (7.5 to 1 minutes).