摘要
A biocompatible water-soluble dextran has been used for controllable one-dimensional assembly of gold nanoparticles via a one-pot method. Long gold nanoparticle chains with good dispersion in water could be easily obtained after adding dextran in- to the mixture of HAuC14 and sodium citrate. The measurements of scanning electron microscopy （SEM） and dynamic light scattering （DLS） confirmed the formation of gold nanoparticle chains. The morphology and dispersion properties of gold na- noparticle chains could be tuned by adjustment of the reagent ratio, stirring speed, and reaction time.
