Journal
NANOSCALE
Volume 9, Issue 36, Pages 13404-13408Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr04832g
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Funding
- Marie Curie Program (FP7-PEOPLE-ITN) [CYCLON-HIT 608407]
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Amino-terminated mesoporous silica nanoparticles embedding carbon dots (MSCD) formed by calcination were functionalized with a nitric oxide (NO) photodonor (1) to give a robust MSCD-1 conjugate. The intense fluorescence of MSCDs was strongly quenched in MSCD-1 by effective energy transfer. Visible light excitation of MSCD-1 liberates NO, suppresses the energy transfer mechanism and leads to concomitant fluorescence restoration of the MSCD scaffold, which acts as an optical reporter for the released NO. The MSCD-1 hybrid is also able to encapsulate the highly hydrophobic photosensitizer temoporfin, preserving the fluorescence reporting function.
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