A facile way to fabricate CdSe quantum dots coated with silica and the fluorescence property
2006 (English)In: Proceedings of International Symposium on Biophotonics, Nanophotonics and Metamaterials, 2006, 342-345 p.Conference paper (Refereed)
Good quality quantum dots (QDs) CdSe were prepared with a novel and non-TOP method. Quantum dots with different sizes ranging from 2 to 5 rim could be obtained by removing aliquots of reaction solution at different time intervals. The quantum dots CdSe (core) -silica (shell) was fabricated by a rnicroemulsion method. Transmission electron microscopy (TEM) images confirmed the well monodispersed QDs and the silica shell around CdSe core respectively. UV-Vis absorption and photoluminescence spectra clearly indicated that both the original QDs and the silica-coated QDs had good fluorescence properties. The quantum dots coated with silica shell are water-soluble and less toxic (due to the silica shell), which are anticipated as fluorescent probes for biosensing and imaging applications such as tumor detection of pre-cancers.
Place, publisher, year, edition, pages
2006. 342-345 p.
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-42219DOI: 10.1109/METAMAT.2006.335078ISI: 000247372900097ScopusID: 2-s2.0-46149107909ISBN: 978-0-7803-9773-6OAI: oai:DiVA.org:kth-42219DiVA: diva2:446806
International Symposium on Biophotonics, Nanophotonics and Metamaterials, Metamaterials 2006; Hangzhou; 16 October 2006 through 18 October 2006
QC 201110102011-10-102011-10-062011-10-10Bibliographically approved