Luminescent mesoporous colloidal silica: A nanoporous substrate for photosensitization of lanthanide ions

Nearly monodisperse, mesoporous, colloidal silica spheres were treated with aminopropyltriethoxysilane and subsequently calcined to generate luminescent mesoporous colloidal silica (LMCS), with broad bimodal visible emission and high surface areas exceeding 700 m 2/g. The combination of high surface...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2011-01, Vol.65 (1), p.10-12
Main Authors: Zhanbotin, Arman, Soriano, Ronald B., Ikonen, Anita K., Nurakhmetov, Turlybek N., Schmedake, Thomas A.
Format: Article
Language:English
Subjects:
Colloids
Emission
ions
Lanthanides
Luminescence
Luminescent colloidal silica
Nanostructure
Optical materials and properties
Phosphors
Photochemical
photosensitivity disorders
Porosity
Quenching
silica
Silicon dioxide
Sol-gel preparation
Surface area
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nearly monodisperse, mesoporous, colloidal silica spheres were treated with aminopropyltriethoxysilane and subsequently calcined to generate luminescent mesoporous colloidal silica (LMCS), with broad bimodal visible emission and high surface areas exceeding 700 m 2/g. The combination of high surface area and localization of luminescence centers at the surface provides opportunities for exploring new efficient photophysical/photochemical relaxation processes with the metal-free/dye-free luminescent silica sol–gel materials. Addition of LMCS to solutions of TbCl 3 or EuCl 3 results in efficient lanthanide sensitization. The enhancement in lanthanide emission is accompanied by a quenching of LMCS emission.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2010.08.080