Authors:
SK Maji, S Sreejith, J Joseph, M Lin, T He, Y Tong, H Sun, SW-K Yu, Y Zhao
Journal name: 
Adv Mater
Citation info: 
26(32):5633-5638
Abstract: 
An inclusion complex of NaYF4 :Yb(3+) ,Er(3+) upconversion nanoparticles with α-cyclodextrin in aqueous conditions exhibits luminescence quenching when excited at 980 nm. This non-radiative relaxation leads to an unprecedented photoacoustic signal enhancement. In vivo localization of α-cyclodextrin-covered NaYF4 :Yb(3+) ,Er(3+) is demonstrated using photoacoustic tomography in live mice, showing its high capability for photoacoustic imaging.
DOI: 
http://doi.org/10.1002/adma.201400831
E-pub date: 
27 Aug 2014