方法:该传感器以M13噬菌体为纳米载体,可应用于细菌的检测和原位消除,CTPEG的羧基通过EDC/NHS化学与衣壳pVIII的N端偶联,形成CTPEG修饰的CTPEG-M13。CTPEG-M13中暴露的硫醇基团作为DTTC修Au@AgNRs的锚定位点,导致M13-Au@AgNR@DTTC生物复合材料(M13噬菌体基SERS纳米载体)的形成。该平台能够在一定浓度范围内检测目标...
Au/Ag core-shell nanorodsCTABLSPRSERSBiological solutionBiosensingFunctionalizationThe purification, stability, and surface modification of Au/Ag core鈥搒hell nanorods (Au/Ag NRs) in a biological buffer solution were systematically studied for the first time. In this study, Au/Ag NRs were synthesized...
In this work, we investigated experimentally and theoretically the plasmonic Fano resonances (FRs) exhibited by core–shell nanorods composed of a gold core and a silver shell (Au@Ag NRs). The colloidal synthesis of these Au@Ag NRs produces nanostructures with rich plasmonic features, of which ...
为了增强手性,人们在Au纳米颗粒(NP)或Au-Ag核壳立方上也进行了一些尝试,但在多肽或多核苷酸的的调控中具有相当的复杂性。金属Ag在Au-NPs或Au-NRs上的后生长可以增强紫外或可见光波段的手性,但仅限于很窄波段。等离激元金属(如Au和Cu)具有强烈的局域表面等离子体共振特性,可以在金属-电介质中引起传导电子的集体...
Here, a synthetic methodology is described to obtain bimetallic heterostructures and alloyed plasmonic nanocrystals through the irradiation of colloidal Au@Ag core–shell nanorods (Au@Ag NRs) with femtosecond laser pulses. Depending on the energy deposited on the Au@Ag NRs, different morphologies and ...
Au@AgNRs的拉曼增强效果比金纳米棒强很多,但是对某些有机化合物的增强效果不明显,如福美双、过氧化物等。中国专利文献CN106404765A公开了一种银包金纳米棒比色探针的制备方法及其检测铜离子的方法,该方法是针对铜离子的检测方法,不能有效检测有机物。此外,现有技术中检测有机物的方法受光照、温度等因素变化较大,...
通过静电相互作用将单分散性良好的Au@Ag核壳复合双金属纳米棒(Au@AgNRs)负载于滤纸,制得载Au@AgNRs的复合滤纸.用扫描电子显微镜观察了使用不同Au@AgNRs溶液制备的复合滤纸Au@AgNRs中的分布情况,并统计了单位面积滤纸中Au@AgNRs的粒子数.将制得的载不同数量Au@Ag-NRs复合滤纸用作表面增强拉曼光谱(SERS)基底,...
More complex nanostructures, grown utilizing Au nanodisks as a core, incorporated the subsequent growth of Ag around a Au core (by galvanic replacement) have been shown. The number of shells was tuned by controlling the total number of Ag-shell-growth and galvanic-replacement reaction steps. ...
Finally, LOD of thiram by using the formed Au@Ag NRs was obtained at 60 nM. Show abstract Ag nanocubes decorated 1T-MoS<inf>2</inf> nanosheets SERS substrate for reliable and ultrasensitive detection of pesticides 2020, Applied Materials Today Citation Excerpt : Therefore, there is a need to...
The catalytic property of [email protected] NRs in water solution was much better than that of Au NRs in water solution. To obtain high catalytic properties, we self-assembled a single-layer [email protected] NR array by evaporation on a silicon wafer. The catalytic activity of the [email ...