fulltext.study @t Gmail

Photophysical properties of 2,6-dicyano-N,N,N ′,N ′-tetramethyl-p-phenylenediamine

Paper ID Volume ID Publish Year Pages File Format Full-Text
28462 44075 2006 11 PDF Available
Title
Photophysical properties of 2,6-dicyano-N,N,N ′,N ′-tetramethyl-p-phenylenediamine
Abstract

Photophysical properties of 2,6-dicyano-N,N,N ′,N ′-tetramethyl-p  -phenylenediamine (DCTMPPD) are reported. Fluorescence quantum yields range from 0.37 to 0.58 and fluorescence lifetimes from 12.2 to 22.9 ns in 28 different solvents. The triplet energy is determined to be 16.8 kK. Steady-state and time-resolved emission anisotropies in glycerol are given. Three correlation times with τ1<0.8τ1<0.8  ns τ2=20τ2=20  ns and τ3>80τ3>80 ns are found. The fluorescence solvatochromism is analyzed using empirical one- and multiparameter approaches as well as classical non-empirical continuum models. The excited state dipole moment is estimated to be between 10 and 12 D, depending on the model applied. The ground state pKaKa is determined to be 2.5, while for the excited state pKa∗ a range of 0.5–2 can be estimated.

Keywords
2,6-Dicyano-N,N,N ′,N ′-tetramethyl-p-phenylenediamine; Anisotropy; Solvatochromism; Photophysical properties
First Page Preview
Photophysical properties of 2,6-dicyano-N,N,N ′,N ′-tetramethyl-p-phenylenediamine
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 183, Issues 1–2, 30 September 2006, Pages 225–235
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