Nano Archive

A four-color colloidal multiplexing nanoparticle system

Ehlert, Oliver and Thomann, Ralf and Darbandi, Masih and Nann, Thomas (2008) A four-color colloidal multiplexing nanoparticle system. ACS NANO, 2 (1). pp. 120-124.

PDF - Published Version

Official URL:


Any labeling with multicolor markers can be affected by the autofluorescence of biological tissue due to the UV or blue light excitation sources, or the results are affected by fluorescence resonance energy transfer. In this work, we present novel IR-to-vis upconverting nanoparticles of different rare earth metal dopants. With a single excitation source of 980 nm, four different colors of nanocrystals can be spectrally separated under multiplexing conditions. The particles were phase transferred into polar solvents by means of silica encapsulation and were characterized by transmission electron microscopy, X-ray diffraction, and photoluminescence spectroscopy.

Item Type:Article
Uncontrolled Keywords:upconversion; colloidal nanoparticles; multicolor multiplexing; silica encapsulation
Subjects:Analytical Science > Microscopy and probe methods
Material Science > Functional and hybrid materials
ID Code:3541
Deposited By:Farnush Anwar
Deposited On:16 Jan 2009 12:17
Last Modified:29 Jan 2009 10:13

Repository Staff Only: item control page