A simple method to prepare the non-spherical gold particles was developed. The result solution included trigonal, truncated trigonal, hexagonal layers, and a pseudo-pentagonal shaped gold nanocrystals. The key facto...A simple method to prepare the non-spherical gold particles was developed. The result solution included trigonal, truncated trigonal, hexagonal layers, and a pseudo-pentagonal shaped gold nanocrystals. The key factor is to control the relative rates of nucleation and cluster growth in this method. These attributes make seeding growth method as a useful tool in the fabrication of colloidal metal materials. A longitudinal plasmon resonance of 866 nm was observed, which is in the near-IR spectral regions (600-1000 nm). The excellent optical properties as near-IR labels are used to develop highly sensitive analysis method.展开更多
A highly sensitive stopped-flow spectrophotometry kinetic method was proposed for quantification phenoxyl radicals based on their accelerating effect on the oxidation of nicotinamide adenine dinucleotide （NADH）. Phe...A highly sensitive stopped-flow spectrophotometry kinetic method was proposed for quantification phenoxyl radicals based on their accelerating effect on the oxidation of nicotinamide adenine dinucleotide （NADH）. Phenoxyl radicals generated from as low as 1×10^-8 mol/L 2,4-DCP can be readily detected with the proposed method and the detecting limit was 2.5×10^-9 mol/L.展开更多
文摘A simple method to prepare the non-spherical gold particles was developed. The result solution included trigonal, truncated trigonal, hexagonal layers, and a pseudo-pentagonal shaped gold nanocrystals. The key factor is to control the relative rates of nucleation and cluster growth in this method. These attributes make seeding growth method as a useful tool in the fabrication of colloidal metal materials. A longitudinal plasmon resonance of 866 nm was observed, which is in the near-IR spectral regions (600-1000 nm). The excellent optical properties as near-IR labels are used to develop highly sensitive analysis method.
基金The authors gratefully acknowledge financial support from the National Natural Science Foundation of China （No. 20275027 and No. 20377032）.
文摘A highly sensitive stopped-flow spectrophotometry kinetic method was proposed for quantification phenoxyl radicals based on their accelerating effect on the oxidation of nicotinamide adenine dinucleotide （NADH）. Phenoxyl radicals generated from as low as 1×10^-8 mol/L 2,4-DCP can be readily detected with the proposed method and the detecting limit was 2.5×10^-9 mol/L.
