A novel strategy has been developed for construction of nanoparticle chains between nanoelectrodes with bifunctional molecules by taking advantage of linear aggregation of colloidal particles in organis solvents. As c...A novel strategy has been developed for construction of nanoparticle chains between nanoelectrodes with bifunctional molecules by taking advantage of linear aggregation of colloidal particles in organis solvents. As confirmed by scanning electron microscopy （SEM）,an individual nanoparticle chain bridged the electrode pair. The present approach makes this technique to be cheap and may be applicable in microelectronic industry.展开更多
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 obt...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.展开更多
基金The authors thank the support by the National Natural Science Foundation of China （No.60171005, No.6037107 and No.90406023）Promotional Foundation of Ministry of Education of China for excellent youth teachers （2000） Grant-in-aid for Returnee in City of Nanjing, China.
文摘A novel strategy has been developed for construction of nanoparticle chains between nanoelectrodes with bifunctional molecules by taking advantage of linear aggregation of colloidal particles in organis solvents. As confirmed by scanning electron microscopy （SEM）,an individual nanoparticle chain bridged the electrode pair. The present approach makes this technique to be cheap and may be applicable in microelectronic industry.
文摘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.
