Focused Fluorescent Probe Library for Metal Cations and Biological Anions
作者:Hyun-Woo Rhee、Sang Wook Lee、Jun-Seok Lee、Young-Tae Chang、Jong-In Hong
DOI:10.1021/co400034x
日期:2013.9.9
A focusedfluorescentprobelibrary for metalcations was developed by combining metal chelators and picolinium/quinolinium moieties as combinatorial blocks connected through a styryl group. Furthermore, metal complexes derived from metal chelators having high binding affinities for metalcations were used to construct a focusedprobelibrary for phosphorylated biomolecules. More than 250 fluorescent
A New Compound for Sequential Sensing of Picric Acid and Aliphatic Amines: Physicochemical Details and Construction of Molecular Logic Gates
作者:Ashutosh Ghosh、Sourav Kanti Seth、Arnab Ghosh、Pradip Pattanayak、Arabinda Mallick、Pradipta Purkayastha
DOI:10.1002/asia.202100117
日期:2021.5.3
(PA) at low concentration is a serious water pollutant. Alongside, aliphatic amines (AAs) add to the queue to pollute surface water. Plenty of reports are available to sense PA with an ultralow limit of detection (LOD). However, only a handful of works are testified to detect AAs. A new fluorescent donor‐acceptor compound has been synthesized with inherent intramolecular charge transfer (ICT) character
of 4-(di-2-picolylamino)benzaldehyde and the appropriate methyldiazine. All of the compounds showed π–π* transitions in the UV or visible region and the emission of yellow-green light upon irradiation. Significant red shifts were observed in the fluorescence emission maxima of these compounds on increasing the solvent polarity, a finding that suggests the formation of an intramolecular charge-separated
colorimetric probe has been developed for the detection and estimation of PdII at sub‐nanomolar concentrations. The probe consisted of rhodamine (signaling unit), which was linked with a bis‐picolyl moiety (binding site) through a phenyl ring. PdII induced opening of the spirolactam ring of the probe with the generation of a prominent pink color. The excellent selectivity of the probe towards PdII