fulltext.study @t Gmail

Experimental investigations by using electrochemical, steady state and time resolved spectroscopic tools on the photoreactions of disubstituted indoles in presence of tetracyanoquinodimethane (TCNQ) and a theoretical approach by using time-dependent densi

Paper ID Volume ID Publish Year Pages File Format Full-Text
28401 44074 2007 10 PDF Available
Title
Experimental investigations by using electrochemical, steady state and time resolved spectroscopic tools on the photoreactions of disubstituted indoles in presence of tetracyanoquinodimethane (TCNQ) and a theoretical approach by using time-dependent densi
Abstract

The spectroscopic and photophysical properties of some dimethylindoles, 1,2-dimethylindole (12DMI) and 2,3-dimethylindole (23DMI) were measured in presence of electron acceptor, tetracyanoquinodimethane (TCNQ) in solvents of varying polarity by using electrochemical, steady state and time resolved spectroscopic techniques. Both from the theoretical considerations made by using time-dependent density functional theory (TD-DFT) and steady state polarization spectral measurements, it reveals the possibility of mixing of the two closely lying lowest electronic excited states 1La (S2) and 1Lb (S1) of DMIs. Though Stern–Volmer (SV) analysis of steady state measurements is unable to provide the information on the concurrent occurrences of static and dynamic processes involved, but electrochemical measurements coupled with time resolved spectroscopic investigations demonstrate that TCNQ may act as a potential electron acceptor in presence of dimethylindoles to undergo highly exergonic photoinduced electron transfer reactions in Marcus inverted region. Possibility of building up of various artificial or model photoactive systems with the linked DMI–TCNQ dyad systems is hinted at.

Keywords
Photoinduced electron transfer; Static quenching; Dynamic quenching; Transient absorption spectra; TD-DFT
First Page Preview
Experimental investigations by using electrochemical, steady state and time resolved spectroscopic tools on the photoreactions of disubstituted indoles in presence of tetracyanoquinodimethane (TCNQ) and a theoretical approach by using time-dependent densi
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
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 188, Issues 2–3, 20 May 2007, Pages 235–244
Authors
, , , , ,
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
Online Support
Any Questions? feel free to contact us