Bifunctional Cu²⁺/Fe³⁺ Probe with Independent Signal Outputs Based on a Photochromic Diarylethene with a Dansylhydrazine Unit.

ABSTRACT: A novel dual-response fluorescent sensor based on a diarylethene photoswitching unit and a dansylhydrazine functional group has been synthesized. The compound exhibited high selectivity for Fe³⁺ and Cu²⁺ with independent fluorescence signal outputs. In the presence of Fe³⁺, the sensor formed a 1:1 metal complex, resulting in a remarkable "turn-off" fluorescence signal. On the other hand, its fluorescence intensity was notably enhanced (turn-on) and a color change from bright yellow to bright blue was observed when the sensor interacted with Cu²⁺, which was due to the hydrolysis reaction of the dansyl acid dye, as confirmed by high-resolution mass spectrometry-electrospray ionization and infrared spectrum. The detection limits were 9.73 × 10^-

SUBMITTER: Liang Y 

PROVIDER: S-EPMC6647968 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature