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a) Reaction of benzenediazonium tetrafluoroborate derivatives and mechanically exfoliated few‐layer BPNSs (light blue) on a Si (gray)/SiO2 (purple) substrate. b) AFM image (top) of BPNSs prior to functionalization, along with the height profile extracted along the blue line (bottom). c) AFM image (top) of the same flake after 30 min of exposure to 10 × 10−3 m 4‐NBD. Reproduced with permission.97 Copyright 2016, Springer Nature.
