Journal
CHEMPLUSCHEM
Volume 83, Issue 11, Pages 1021-1031Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.201800393
Keywords
charge transfer; hyperpolarizability coefficient; push-pull systems; pyridinium salts; solvatochromism
Categories
Funding
- MIUR
- Universita degli Studi di Perugia
Ask authors/readers for more resources
The synthesis of three push-pull cationic dyes is reported here together with a photophysical study carried out by stationary and ultrafast spectroscopies. The hyperpolarizability (beta) values of the three molecules have been estimated through a simple solvatochromic method based on conventional, low-cost equipment, which had been tested previously with success in our laboratory. The investigated pyridinium salts showing strong negative solvatochromism bear the same piperidine ring as a strong electron-donor group and the same thiophenes as electron-rich pi-linkers, but differ in terms of the N-substituent on the electron-acceptor pyridinium unit, namely N-methyl in compound A, N-pyrimidin-2yl in B and N-2,4-dinitrophenyl in C. The derived beta values were found to increase (in the order A
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
© Peeref 2019-2024. All rights reserved.