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Specific postcolumn detection method for HPLC assay of homocysteine based on aggregation of fluorosurfactant-capped gold nanoparticles.
Gold nanoparticles (GNPs) capped with nonionic fluorosurfactant molecules (Zonyl FSN) were synthesized, and with the colloidal solution as a probe reagent, a new postcolumn colorimetric detection… Expand
Effect of nonionic fluorosurfactant on the electrogenerated chemiluminescence of the tris(2,2'-bipyridine)ruthenium(II)/tri-n-propylamine system: lower oxidation potential and higher emission…
Fluorosurfactants are commercially available, and their applications in electrochemical systems have been the interest of many studies. Here, we describe a novel effect of a nonionic fluorosurfactant… Expand
Specific detection of cysteine and homocysteine: recognizing one-methylene difference using fluorosurfactant-capped gold nanoparticles.
Aggregation of fluorosurfactant-capped gold nanoparticles could be induced selectively by cysteine and homocysteine and, when solution ionic strength was low, the kinetics of homocysteine-induced… Expand
Scanning electrochemical microscopy: Part 39. The proton/hydrogen mediator system and its application to the study of the electrocatalysis of hydrogen oxidation
The H:H2 redox couple was investigated as a mediator system for scanning electrochemical microscopy (SECM) with proton reduction from a 0.01 M HClO4 solution at a Pt tip. The feedback behavior of the… Expand
Electrogenerated chemiluminescence. 67. Dependence of light emission of the tris(2,2')bipyridylruthenium(II)/tripropylamine system on electrode surface hydrophobicity.
We describe the effect of electrode surface hydrophobicity on the electrochemical behavior and electrogenerated chemiluminescence (ECL) of Ru(bpy)3(2+) (bpy = 2,2'-bipyridyl)/tripropylamine (TPrA)… Expand
Facile and controllable loading of single-stranded DNA on gold nanoparticles.
A facile strategy of loading thiolated single-stranded DNA (ss-DNA) on gold nanoparticles (NPs) has been developed. The gold NPs stabilized by nonionic fluorosurfactant (i.e., Zonyl FSN) are simply… Expand
Multifunctional ruthenium(II) polypyridine complex-based core-shell magnetic silica nanocomposites: magnetism, luminescence, and electrochemiluminescence.
Multifunctional nanoparticles (NPs) that consist of silica-coated magnetic cores and luminescent ruthenium(II) polypyridine complexes have been prepared. These multifunctional nanocomposites were… Expand
Coordination of mercury(II) to gold nanoparticle associated nitrotriazole towards sensitive colorimetric detection of mercuric ion with a tunable dynamic range.
A simple colorimetric assay with high sensitivity, excellent selectivity and a tunable dynamic range is reported for detecting trace amounts of mercuric ion in aqueous solution based on the… Expand
A further exploration of an important factor affecting the pumping performance of turbomolecular pumps
A new model to explain the pumping mechanism of the usual turbomoleculer pump with a lower blade velocity ratio was proposed in a previous paper [J. Y. Tu and N. H. Yang, Vacuum 37, 831 (1987)]. In… Expand