Near infrared (NIR) multi-photon excitation of the NIR-emitting lanthanides neodymium (Nd 3+) and ytterbium (Yb 3+) sensitized by a fluorescein-linked chelator was demonstrated. Because tissues display minimal absorbance near the excitation wavelength of 800 nm, and because the lanthanides display long decay times, these results suggest the use of Nd 3+ and Yb 3+ as luminescent probes in tissues with multi-photon excitation.
|Number of pages||3|
|Journal||Journal of Fluorescence|
|State||Published - Mar 2002|
- Near infrared