White light generation using Förster resonance energy transfer between 3-hydroxyisoquinoline and Nile Red

Simple composite films consisting of a polymer blended with organic emitters have the potential for broad-band "white" light emission that can be used for general lighting applications. In the present work, a simple mixture of 3-hydroxyisoquinoline (HIQ) with Nile Red (NR) in a polymeric m...

Full description

Saved in:
Bibliographic Details
Published in:Photochemical & photobiological sciences 2016-05, Vol.15 (5), p.69-617
Main Authors: Joshi, Neeraj K, Polgar, Alexander M, Steer, Ronald P, Paige, Matthew F
Format: Article
Language:English
Subjects:
Biochemistry
Biomaterials
Chemistry
Fluorescence Resonance Energy Transfer
Fluorescent Dyes - chemistry
Isoquinolines - chemistry
Light
Oxazines - chemistry
Physical Chemistry
Plant Sciences
Polyvinyl Alcohol - chemistry
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Simple composite films consisting of a polymer blended with organic emitters have the potential for broad-band "white" light emission that can be used for general lighting applications. In the present work, a simple mixture of 3-hydroxyisoquinoline (HIQ) with Nile Red (NR) in a polymeric matrix of polyvinyl alcohol (PVA) is used to generate white light through a non-radiative excitation energy transfer (NREET) mechanism. NREET between HIQ and NR doped in PVA films is investigated using a combination of steady state and time resolved fluorescence spectroscopic methods. It is observed that NR has very weak fluorescence in the PVA film upon excitation at 400 nm, but upon mixing NR with HIQ, sensitized emission of NR is observed with decreased emission of HIQ. The behavior of the sensitized emission of NR is consistent with Förster resonance energy transfer (FRET) between the donor HIQ and acceptor NR. By adjusting the relative fractions of HIQ and NR in the films, the extent of FRET could be regulated and the overall film emission color could be manipulated to enable overall "white" (CIE color coordinates 0.34, 0.38) emission. The films showed excellent photostability with 405 nm diode illumination, along with mechanical flexibility, suggesting good potential utility as a down converting element for lighting applications. A simple mixture of 3-hydroxyisoquinoline with Nile Red in a polymeric matrix of polyvinyl alcohol is used to generate white light that is suitable for lighting applications through a fluorescence resonance energy transfer mechanism.
ISSN:1474-905X
1474-9092
DOI:10.1039/c6pp00005c