Abstract
A hydrophilic bis(1,2,3-triazolyl)fluorene derivative was synthesized as a multi-photon-absorbing, zinc-ion-sensing fluorescent probe. The fluorescence response was approximately five-fold greater in presence of Zn2+, resulting in a large binding constant (1 × 109) for a 1:2 ligand to zinc complex. A four-fold increase in the two-photon absorption cross section was achieved upon binding Zn2+. In vitro two-photon fluorescence microscopy imaging revealed a significant fluorescence increase upon introduction of Zn2+ into HeLa cells and reversible Zn 2+ binding, demonstrating the potential of this probe for zinc ion sensing.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2978-2981 |
| Number of pages | 4 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 2 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 24 2010 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Materials Science
Keywords
- 1,2,3-triazolyl-fluorene
- binding constant
- fluorescent probe
- metal sensing
- two-photon microscopy bioimaging
- zinc ion sensing