胶体金
化学
氨基酸
电化学
组合化学
纳米颗粒
纳米技术
材料科学
生物化学
物理化学
电极
作者
Shimi Liu,Hao Zhang,Yaqi Wang,Yan Zeng,Sobhan Chatterjee,Feng Liang
标识
DOI:10.1016/j.cclet.2022.07.055
摘要
In this paper, cucurbit[7]uril (CB[7])-mediated three-dimensional gold nanoassemblies were successfully prepared to increase the loaded amount of CB[7] and enhance the electrochemical detection of amino acids. Particle sizes of gold nanoparticles (AuNPs) significantly affect stability and detection sensitivity of nanoassemblies. The volume of gold nanoassemblies first increased and then decreased with the increase of CB[7] concentration. The 3D gold nanoassemblies composed of 16 nm AuNPs and 100 µmol/L CB[7] had excellent stability and maximum volume, exhibiting more sensitive detection for a variety of amino acids. And the detection limits of aromatic amino acids are lower in virtue of the higher binding constant between aromatic amino acids and CB[7]. This study will develop and deepen our understanding of molecular recognition in amino acids detection.
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