Selective Detection of Pyrophosphate Anions in Aqueous Medium Using Aggregation of Perylene Diimide as a Fluorescent Probe.

ABSTRACT: A water-soluble perylene diimide, aspartic acid-functionalized perylene diimide (APDI), has shown significant sequential "turn-off" and "turn-on" responses toward Cu²⁺ and inorganic pyrophosphate (PPi), respectively. APDI was found to show selectivity toward Cu²⁺ and inorganic PPi over adenosine monophosphate, adenosine diphosphate, and adenosine triphosphate. The detection has been studied by absorption and emission spectroscopy techniques. Incorporation of Cu²⁺ into the solution of APDI results in a distinct quenching of the fluorescence intensity, while there was no spectral change in the presence of other metal ions. The formed APDI-Cu²⁺ ensemble can turn on its fluorescence signal when PPi is present. The detection of PPi could be traced by

SUBMITTER: Dey S 

PROVIDER: S-EPMC6777299 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature