Photoswitching of bis-spiropyran using near-infrared excited upconverting nanoparticles.
Bis-spiropryran molecules were grafted onto the surface of upconverting nanoparticles. Fluorescence resonance energy transfer from the upconverting nanoparticles to the surface bis-spiropyran molecules triggered the transformation of the ring-closed bis-spiropyran to the ring-open bis-merocyanine forms.
Department of Chemistry and Biochemistry and Centre for Research in Nanoscience, Concordia University, 7141 Sherbrooke Street West, Montreal, QC, H4B 1R6, Canada.
Biao Fei
BF
Zhang
Michel
M
Frigoli
Fabio
F
Angiuli
Fiorenzo
F
Vetrone
John A
JA
Capobianco