A novel simple reversible fluorescent and colorimetric multiple metal ions chemosensor L based on the thiourea has been designed, synthesized, and characterized by 1H NMR, IR spectroscopy, ESI MS spectrometry and elemental analyses.
We experimentally demonstrate sub-nanomolar sensitivity in the measurement of nanoparticle concentrations, and show that colorimetric imaging with multiple species of nanoparticles produces enhanced contrast for spectroscopic OCT in both tissue phantom and cell studies.
Flexible design of signal probe and facile magnetic separation allow multiple-mode downstream analysis including colorimetric detection and isothermal amplification.
More importantly, this novel colorimetric sensor based on multiple color changes may open a new avenue for the development of Hg2+ sensing probes.
As shown, METRiCS OCT system has the capability to extract the extinction spectra of multiple species of gold nanoparticles to produce colorimetric and spectral contrast in three dimensions.
We have developed a simple colorimetric assay method for simultaneously measuring multiple energy-producing pathways in cells and providing a more global perspective of the range and regulation of multiple energy-producing pathways.
Furthermore, by using fDNA such as DNAzyme and aptamer, dynamic control of assemblies of different NPs, including AuNPs, QDs, CNTs, and iron oxide NPs, in response to multiple stimuli with cooperativity has been demonstrated, resulting in colorimetric and fluorescent sensors as well as magnetic resonance imaging contrast agents for a wide range of analytes.
Although extracts prepared from Xenopus eggs develop caspase activity over time (that can be monitored using a variety of fluorescent and colorimetric indicators in vitro), these activities reflect the "death" of multiple pooled eggs in aggregate, rather than the real-time apoptosis of individual cells 11.
The resulting film was successfully used for the consecutive colorimetric detection of cysteine and mercury (II) ions, demonstrating its reusability even after multiple cycles.
Hydrophilic paper was employed as microfluidic device for running colorimetric assay, tree-shaped design was developed to ensure uniform microfluidic flow for multiple branches.
