Bis(Naphthalimide-Piperazine)-Based Off-On Fluorescent Probe for Acids
- Authors
- Lee, Min Hee
- Issue Date
- May-2016
- Publisher
- SPRINGER/PLENUM PUBLISHERS
- Keywords
- Naphthalimide-piperazine; Fluorescence sensor; pH probe; Photo-induced electron transfer
- Citation
- JOURNAL OF FLUORESCENCE, v.26, no.3, pp 807 - 811
- Pages
- 5
- Journal Title
- JOURNAL OF FLUORESCENCE
- Volume
- 26
- Number
- 3
- Start Page
- 807
- End Page
- 811
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/9817
- DOI
- 10.1007/s10895-016-1767-6
- ISSN
- 1053-0509
1573-4994
- Abstract
- A bis(naphthalimide-piperazine) derivative (1) was synthesized as a pH-sensitive Off-On fluorescent probe. Operation mechanism of 1 is based on photo-induced electron transfer (PET) and its pH-dependent optical changes were investigated by using absorption and fluorescence spectroscopy. In the pH range of 11-4.5, this probe undergoes PET process from the piperazine to the naphthalimide moiety, leading to a fluorescence quenching. However, in the pH range of 4.5-1, the PET is inhibited to give a fluorescence enhancement. Moreover, the fluorescence 'turn-on' response of 1 is highly selective for protons (H+) over other metal cations, biomolecules and it shows a good reversibility between acidic and basic conditions.
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