Please use this identifier to cite or link to this item:
Title: Enhanced nonlinear optical responses in donor-acceptor ionic complexes via photo induced energy transfer
Authors: Mamidala, V.
Polavarapu, L. 
Balapanuru, J.
Loh, K.P. 
Xu, Q.-H. 
Ji, W. 
Issue Date: 6-Dec-2010
Citation: Mamidala, V., Polavarapu, L., Balapanuru, J., Loh, K.P., Xu, Q.-H., Ji, W. (2010-12-06). Enhanced nonlinear optical responses in donor-acceptor ionic complexes via photo induced energy transfer. Optics Express 18 (25) : 25928-25935. ScholarBank@NUS Repository.
Abstract: By complexion of donor and acceptor using ionic interactions, the enhanced nonlinear optical responses of donor-acceptor ionic complexes in aqueous solution were studied with 7-ns laser pulses at 532 nm. The optical limiting performance of negatively charged gold nanoparticles or graphene oxide (Acceptor) was shown to be improved significantly when they were mixed with water-soluble, positively-charged porphyrin (Donor) derivative. In contrast, no enhancement was observed when mixing with negatively-charged porphyrin. Transient absorption studies of the donor-acceptor complexes confirmed that the addition of energy transfer pathway were responsible for excited-state deactivation, which results in the observed enhancement. Fluence, angle-dependent scattering and time correlated single photon counting measurements suggested that the enhanced nonlinear scattering due to faster nonradiative decay should play a major role in the enhanced optical limiting responses. © 2010 Optical Society of Americ.
Source Title: Optics Express
ISSN: 10944087
DOI: 10.1364/OE.18.025928
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Oct 20, 2021


checked on Oct 20, 2021

Page view(s)

checked on Oct 14, 2021

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.