title: A single gold nanorod as a plasmon resonance energy transfer based nanosensor for high-sensitivity Cu(II) detection.
abstract: Plasmon resonance energy transfer (PRET) has been widely applied in the detection of bio-recognition, heavy metal ions and cellular reactions with high sensitivity, based on the overlap between the plasmon resonance scattering band of nanoparticles and the absorption band of the surface-modified chromophore molecules. Previous sensors based on PRET were all implemented on gold nanospheres with scattering light in the range of 530 to 600 nm. In this work, a PRET-based nanosensor was developed on a thiol-di(2-picolyl)amine-modified single gold nanorod for the detection of Cu(2+) ions in aqueous solution with high sensitivity and selectivity. Compared to nanospheres, gold nanorods with tunable and wide plasmon resonance bands from the near-infrared to the infrared region exhibit promising potential for development as sensing probes.
authors.affiliation: Key Laboratory for Advanced Materials and Department of Chemistry, East China University of Science and Technology, Shanghai, 200237, P. R. China. ytlong@ecust.edu.cn.
authors.forename: Chao
authors.initials: C
authors.lastname: Jing
authors.forename: Lei
authors.initials: L
authors.lastname: Shi
authors.forename: Xiaoyuan
authors.initials: X
authors.lastname: Liu
authors.forename: Yi-Tao
authors.initials: YT
authors.lastname: Long