TY - GEN
T1 - Plasmon enhanced silver quantum cluster fluorescence for biochemical applications
AU - Bernard, S.
AU - Kutter, Jörg P.
AU - Mogensen, K. B.
PY - 2014
Y1 - 2014
N2 - Fluorescence microscopy of individual silver quantum clusters on the surface of silver nanoparticles reveals strong photoactivated emission under blue light excitation [1-4]. In this work, silver nanoparticles are produced by annealing silver thin films deposited on a glass substrate and silver quantum clusters are subsequently synthesized at the surface of the nanoparticles by photoactivation in presence of Ag+ cations in solution. The photogeneration of these silver quantum clusters leads to a great increase in the fluorescent signal. This photoactivated surface can then be used for sensing purposes. It was found, that in presence of a strong nucleophile (such as CN-), silver quantum clusters are dissolved into non-fluorescing AgCN complexes, resulting in a fast and observable decrease of the fluorescent signal.
AB - Fluorescence microscopy of individual silver quantum clusters on the surface of silver nanoparticles reveals strong photoactivated emission under blue light excitation [1-4]. In this work, silver nanoparticles are produced by annealing silver thin films deposited on a glass substrate and silver quantum clusters are subsequently synthesized at the surface of the nanoparticles by photoactivation in presence of Ag+ cations in solution. The photogeneration of these silver quantum clusters leads to a great increase in the fluorescent signal. This photoactivated surface can then be used for sensing purposes. It was found, that in presence of a strong nucleophile (such as CN-), silver quantum clusters are dissolved into non-fluorescing AgCN complexes, resulting in a fast and observable decrease of the fluorescent signal.
KW - Optical cyanide detection
KW - Plasmon enhanced fluorescence
KW - Silver nanoparticles
KW - Silver quantum clusters
UR - http://www.scopus.com/inward/record.url?scp=84907419995&partnerID=8YFLogxK
M3 - Article in proceedings
AN - SCOPUS:84907419995
SN - 9781482258271
VL - 2
SP - 443
EP - 446
BT - Technical Proceedings of the 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014
PB - NSTI Nano Science and Technology Institute
ER -