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Triple fluorescence of acridinedione: Locally excited, photoinduced electron transfer promoted charge transfer and anion induced charge transfer states

Paper ID Volume ID Publish Year Pages File Format Full-Text
27817 44044 2009 8 PDF Available
Title
Triple fluorescence of acridinedione: Locally excited, photoinduced electron transfer promoted charge transfer and anion induced charge transfer states
Abstract

A dual emitting acridinedione fluorophore, 9-(4-(dimethylamino)phenyl)-3,4,6,7,9,10-hexahydroacridine-1,8(2H,5H)-dione (DMAADR-1), was synthesized and its dual fluorescence behavior was found to be greatly affected by the presence of both transition metal ions and anions. Addition of transition metal ions results in the fluorescence enhancement in the locally excited (LE) state with the disappearance of charge transfer (CT) state by suppression of photoinduced electron transfer (PET) process. Whereas in the case of anions like acetate, phosphate and fluoride, a triple fluorescence is observed, corresponding to the LE state, PET promoted CT state and anion induced CT (AICT) state. Since the present molecule can act as heteroditopic host for both transition metal ions and anions, we have carried out simultaneous binding studies of metal ions and anions. These studies clearly proved the sequestering of the ions and thus tuned the fluorescence of DMAADR-1 between OFF–ON states.

Keywords
Acridinedione dyes; Triple fluorescence; Heteroditopic host; Photoinduced electron transfer; Anion induced charge transfer
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Triple fluorescence of acridinedione: Locally excited, photoinduced electron transfer promoted charge transfer and anion induced charge transfer states
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 208, Issues 2–3, 15 December 2009, Pages 117–124
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
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