• Login
  • Help Guide
View Item 
  •   JOOUST IR Home
  • Journal Articles
  • School of Biological, Physical, Mathematics & Actuarial Sciences
  • View Item
  •   JOOUST IR Home
  • Journal Articles
  • School of Biological, Physical, Mathematics & Actuarial Sciences
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Fine Tuning the Microenvironment of [Euw10o36]9- Anion Leads to the Large Enhancement of the Red Light Luminescence

Thumbnail
Publication Date
2018-04-01
Author
Omwoma, Solomon
Lagat, Silah C
Lalah, Joseph O
Type
Article
Metadata
Show full item record
Abstract/Overview

The polyoxometalate (POM) anion of europium (III) decatungstate [EuW10O36]9- exhibits great luminescence quantum yields of approximately 67% but suffers reduced red light emissions that are due to the low 5D0→7F2 transmissions. Fine tuning the microenvironment around [EuW10O36]9- anion through intercalation into different compositions of layered double hydroxides (LDHs) materials, greatly enhances the 5D0→7F2 transmissions. The positive nanosheets in LDHs provide a conducive microenvironment for strong transitions of 5D0→7F2 to occur. The ratio I(5D0→7F2)/I(5D0→7F1) for the observed intensities vary from 0.44 for [EuW10O36]9- ion to 14.08, 6.20, 1.75 and 1.59 in Mg2Al-EuW10O36, LYbH-EuW10O36, Zn2Al-EuW10O36 and LEuH-EuW10O36 materials respectively (Mg2Al = magnesium aluminum LDHs, Zn2Al = Zinc aluminum LDHs, LYbH = layered ytterbium hydroxide LDHs, and LEuH = layered europium hydroxide LDHs). As such, these materials can find a wide application in processes that require the red light luminescence.

Publisher
North-Holland
Permalink
http://ir.jooust.ac.ke:8080/xmlui/handle/123456789/9441
Collections
  • School of Biological, Physical, Mathematics & Actuarial Sciences [254]

Browse

All of JOOUST IRCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

LoginRegister

Statistics

View Usage Statistics

Contact Us

Copyright © 2023-4 Jaramogi Oginga Odinga University of Science and Technology (JOOUST)
P.O. Box 210 - 40601
Bondo – Kenya

Useful Links

  • Report a problem with the content
  • Accessibility Policy
  • Deaccession/Takedown Policy

TwitterFacebookYouTubeInstagram

  • University Policies
  • Access to Information
  • JOOUST Quality Statement