We thank Dr. Peter Sommer-Larsen for fruitful discussions and the EU HCM network “Novel third-order nonlinear optical materials” as well as the Danish Research Councils for financial support.
Large third-order nonlinear optical response from molecules with effective multidirectional charge-transfer transitions: New design of third-order nonlinear chromophores†
Article first published online: 29 OCT 2004
Copyright © 1997 Verlag GmbH & Co. KGaA, Weinheim
Volume 9, Issue 14, pages 1113–1116, 1997
How to Cite
Greve, D. R., Schougaard, S. B., Geisler, T., Petersen, J. C. and Biørnholm, T. (1997), Large third-order nonlinear optical response from molecules with effective multidirectional charge-transfer transitions: New design of third-order nonlinear chromophores. Adv. Mater., 9: 1113–1116. doi: 10.1002/adma.19970091411
- Issue published online: 29 OCT 2004
- Article first published online: 29 OCT 2004
- Manuscript Revised: 19 AUG 1997
- Manuscript Received: 26 MAY 1997
Enhanced values of the second molecular hyperpolarizability, γ, are reported for molecules that undergo significant multidirectional charge redistributions between the ground and excited states, e.g., charge is displaced from the periphery to the center, or vice versa, upon excitation, in during large changes in electric moments higher than dipole moments. The γ-values are compared with those for polyene-like molecules having a similar number of π-electrons. It is demonstrated that the “periphery-to-center charge-transfer” design concept is fruitful and should lead to new molecules with high γ-values.