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The use of quartz crystal microbalance (QCM) sensor arrays for analyses of volatile organic compounds (VOC) has attracted significant interest in recent years. In this regard, a group of uniformed materials based on organic salts (GUMBOS) has proven to be promising recognition elements in QCM based sensor arrays due to diverse properties afforded by this class of tunable materials. Herein, we examine...
In this work, we developed a simple, rapid and mild strategy for synthesis of DNA-templated fluorescent gold nanoclusters (AuNCs) through association of gold ions to DNA templates and reduction with 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES). After systematical investigation on the formation of fluorescent AuNCs by using different DNA templates, C5 DNA was found as the best template...
By retaining the quadrapyridyl receptor of polypyridylhexaazatriphenylene (a Cd 2+ sensor reported by us) and extending its chromophoric group with pyrene, a chemical sensor (1) was designed and synthesized in this work. This sensor exhibit selective off-on fluorescence response to Cd 2+ over other metal ions, and the detection limit is as low as 0.02μM. The Cd 2+ sensing of...
Two hexaazatriphenylene (HAT) derivatives, 2,3,6,7-tetramethyl-10,11-di(pyridin-2-yl)dipyrazino[2,3-f:2',3'-h]quinoxaline (1) and 2,3-dimethyl-6,7,10,11-tetra(pyridin-2-yl)dipyrazino[2,3-f:2',3'-h]quinoxaline (2), were designed and synthesized. Both 1 and 2 exhibited high off–on fluorescent selectivity for Cd 2+ over many other metal ions, and the detection limits were determined to be 0.6...
In this report, we presented a new method to fabricate TiO 2 nanotube (TiO 2 NT) arrays modified with cupric oxide (CuO) nanofibers, getting a novel TiO 2 NT arrays composition electrode for sensitive nonenzymatic glucose detection. For the preparation of CuO nanofibers, Cu nanoparticles were firstly electrodeposited onto the TiO 2 NT arrays, and then oxidized to CuO...
Orientedly bioconjugated core/shell Fe 3 O 4 @Au magnetic nanoparticles were synthesized for cell separation. The Fe 3 O 4 @Au magnetic nanoparticles were synthesized by reducing HAuCl 4 on the surfaces of Fe 3 O 4 nanoparticles, which were further characterized in detail by TEM, XRD and UV–vis spectra. Anti-CD3 monoclonal antibody was orientedly...
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