Charge-sensitive fluorescent nanosensors created from nanodiamonds. Issue 29 (3rd July 2015)

• Record Type: Journal Article
• Authors: Petrakova, V.; Rehor, I.; Stursa, J.; Ledvina, M.; Nesladek, M.; Cigler, P.
• Is Part Of: Nanoscale. Volume 7:Issue 29(2015)
• Page Start: 12307
• Page End: 12311
• Publication Date: 2015-07-03
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c5nr00712g
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Direct optical detection of charge changes caused by noncovalent chemical events in the vicinity of the nanodiamond surface was achieved. This finding opens new possibilities for construction of biocompatible and extremely photostable two-color fluorescent (bio)nanosensors. Abstract : We show that fluorescent nanodiamonds (FNDs) are among the few types of nanosensors that enable direct optical reading of noncovalent molecular events. The unique sensing mechanism is based on switching between the negatively charged and neutral states of NV centers which is induced by the interaction of the FND surface with charged molecules.