| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9586280 | Journal of Luminescence | 2005 | 6 Pages |
Abstract
A new Zn2+ fluorescent sensor NIDPA, with 1,8-naphthalimide as reporting group and di-2-picolylamine (DPA) as recognizing group, has been synthesized via simple steps. Based on photo-induced electron transfer (PET) mechanism, NIDPA has a five-fold fluorescent enhancement and 10Â nm absorption blue-shift under simulated physiological conditions corresponding to the binding of Zn2+. Apparent dissociation constant for Zn2+ (Kd) is 0.83Â nM, and Ca2+, Mg2+, Fe2+, Ni2+ and Cr3+have little influence on fluorescent enhancement. These results suggest that NIDPA can be used to quantitatively and selectively measure the concentration of Zn2+ around sub-nanomolar range.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Jiangli Fan, Xiaojun Peng, Yunkou Wu, Erhu Lu, Jun Hou, Hongbing Zhang, Rong Zhang, Xinmei Fu,