A multi-functional chemosensor for highly selective ratiometric fluorescent detection of silver(I) ion and dual turn-on fluorescent and colorimetric detection of sulfide.
Ji Hye KangJu Byeong ChaeCheal KimPublished in: Royal Society open science (2018)
A multi-functional chemosensor 1 as silver and sulfide detector was synthesized by the combination of octopamine and 4-dimethylaminocinnamaldehyde. Sensor 1 exhibited a ratiometric fluorescence emission for Ag+ from blue to sky. The binding mode of 1 and Ag+ turned out to be a 1 : 1 ratio as determined using Job plot and electrospray ionization (ESI) mass spectral analyses. The sensing mechanism of 1 with silver ion was unravelled by 1H NMR titrations and theoretical calculations. Sensor 1 also discerned sulfide by enhancing fluorescence intensity and changing colour from yellow to colourless in aqueous solution. The sensing properties of 1 toward S2- were investigated by using ESI-mass analysis, Job plot and 1H NMR titrations. Moreover, 1 could be used as a detector for sulfide in a wide pH range.
Keyphrases
- quantum dots
- living cells
- aqueous solution
- fluorescent probe
- sensitive detection
- gold nanoparticles
- single molecule
- energy transfer
- loop mediated isothermal amplification
- label free
- ms ms
- solid state
- magnetic resonance
- silver nanoparticles
- high resolution
- social support
- real time pcr
- depressive symptoms
- atomic force microscopy
- hydrogen peroxide
- image quality
- monte carlo
- molecular dynamics simulations
- molecular dynamics
- density functional theory
- transcription factor
- computed tomography
- high intensity