Luminescent Energy Transfer Between Lanthanide-doped Materials and Conducting Polymers

Paliwal, Swapil (2013) Luminescent Energy Transfer Between Lanthanide-doped Materials and Conducting Polymers. Masters thesis, Indian Institute of Science Education and Research Kolkata.

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It is shown that ricinoleic acid capped Er/Yb doped BaLuF5 nanoparticles exhibit strong upconversion luminescence in the green and the red region of the electromagnetic spectrum. The green to red emission ratio was selectively tuned with the gradual addition of a conducting polymer which absorbs strongly in the green region. The intensity of the green emission decreases more than the red one. The selective quenching is confirmed by studying the upconversion luminescence of the nanoparticle with the addition of a polymer which absorbs more in the red region. This selective tuning is also achieved by varying the applied voltage to an ITO surface coated with the nanoparticle and polymer. The red shift in the absorption spectrum of the polymers due to the formation of polaron and bi-polaron is reflected in the upconversion luminescence of the Er/Yb doped BaLuF5 nanoparticles.

Item Type: Thesis (Masters)
Additional Information: Supervisor: Dr. Venkataramanan Mahalingam
Uncontrolled Keywords: Luminescent Energy; Luminescent Energy Transfer; Lanthanide; Lanthanide-doped Materials; Conducting Polymers; Polymers
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: IISER Kolkata Librarian
Date Deposited: 09 May 2013 03:11
Last Modified: 12 Nov 2014 04:53

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