Nanoencapsulation of Luminescent 3-Hydroxypicolinate Lanthanide Complexes

authors	Iwu, KO; Soares-Santos, PCR; Nogueira, HIS; Carlos, LD; Trindade, T
nationality	International
journal	JOURNAL OF PHYSICAL CHEMISTRY C
keywords	SILICA NANOPARTICLES; REVERSE MICELLES; QUANTUM DOTS; MICROEMULSION; NANOCRYSTALS; PHOSPHORS; SPHERES
abstract	We have synthesized luminescent nanoparticles comprising a core of lanthanide complexes and shells of amorphous silica using reverse micelles as nanoreactors. 3-Hydroxypicolinate complexes of Eu(II), Tb(III), and the corresponding heteronuclear complexes have been investigated as the photoactive cores. The size of the silica particles is within the nanometer scale, which, together with the ability for surface biofunctionalization, opens up perspectives for their use in bioapplications. Optical studies of the as-prepared nanoparticles reveal that the luminescence properties of the 3-hydroxypicolinate complexes in the matrices are markedly different from their original features.
publisher	AMER CHEMICAL SOC
issn	1932-7447
year published	2009
volume	113
issue	18
beginning page	7567
ending page	7573
digital object identifier (doi)	10.1021/jp811363g
web of science category	Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category	Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier	WOS:000265687600016