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Design, synthesis and pH sensing properties of novel 1,8-naphtalimide-based bichromophoric system

Paper ID Volume ID Publish Year Pages File Format Full-Text
27373 44018 2011 9 PDF Available
Title
Design, synthesis and pH sensing properties of novel 1,8-naphtalimide-based bichromophoric system
Abstract

In this work we report on the design, synthesis and sensor properties of a novel bichromophoric sensor system based on 1,8-naphthalimide fluorophores. The synthesized dyad was configured as a fluorescent wavelength-shifting energy transfer chromophore. The novel donor–acceptor system contains blue emitting 4-methoxy-1,8-naphthalimide donor dye, capable of both absorbing light and efficiently transferring the energy to yellow-green emitting 4-N-methylpiperazinyl-1,8-naphthalimide acceptor. The energy-transfer efficiency in the dyad system was calculated to be more than 99%. The acceptor unit in the donor–acceptor system was also designed as a PET based sensor according to the “fluorophore-spacer-receptor” model. The fluorescence behaviour of the bichromophoric system was investigated as a function of pH. The fluorescence enhancement of the novel dyad in acidic media was more than 29 times indicating the high ability of the system to act as an efficient pH chemosensor.

► Novel bichromophoric sensor system based on 1,8-naphthalimides is synthesized. ► Novel dyad is configured as a wavelength-shifting energy transfer chromophore. ► The energy-transfer is more than 99%. ► The dyad is also designed as a PET based sensor according to the “fluorophore-spacer-receptor” model. ► The fluorescence enhancement of the system as a function of pH is more than 29 times.

Keywords
1,8-Naphthalimide; Fluorescence; Energy transfer; pH sensor; Photoinduced electron transfer (PET); Wavelength-shifting chromophore
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Design, synthesis and pH sensing properties of novel 1,8-naphtalimide-based bichromophoric system
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 222, Issue 1, 5 July 2011, Pages 132–140
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us