Decoration of Gold Nanoparticles by a Double-Armed Calix[4]pyrrole: A Receptor-Decorated Nanoensemble for Anion Sensing and Extraction
作者:Punidha Sokkalingam、Seong-Jin Hong、Abdullah Aydogan、Jonathan L. Sessler、Chang-Hee Lee
DOI:10.1002/chem.201300472
日期:2013.5.3
Gold nanoparticles decorated with a double‐armed, deep‐cavity calix[4]pyrrole were prepared and fully characterized. Transmission electron microscopy imaging revealed that the average diameter of the particles was approximately 4 nm both before and after attachment of the receptor to the surface. The calix[4]pyrrole‐functionalized nanoparticles exhibited highly elevated sensing behavior (approximately
制备并充分表征了带有双臂深腔杯[4]吡咯的金纳米颗粒。透射电子显微镜成像显示,在将受体附着于表面之前和之后,颗粒的平均直径均为约4nm。相较于其单体同类物,杯[4]吡咯官能化的纳米粒子表现出很高的感测行为(在二氯甲烷中约为1000倍),同时保持了其客体选择性。受体-纳米颗粒共轭物(nanoreceptor)在添加双酚盐阴离子后显示出明显的聚集,这归因于阴离子介导的颗粒间连接。受体-纳米颗粒共轭物还能够从水层中将氟离子(作为其四丁基铵盐)萃取到有机介质中。