Ratiometric Sensing and Imaging of Intracellular pH Using Polyethylenimine-Coated Photon Upconversion Nanoprobes

1. Näreoja, T.
2. Deguchi, T.
3. Christ, S.
4. Peltomaa, R.
5. Prabhakar, N.
6. Fazeli, E.
7. Perälä, N.
8. Rosenholm, J.M.
9. Arppe, R.
10. Soukka, T.
11. Schäferling, M.