Hyperpolar multichromophoric nanoassembly for molecular nonlinear optics

Mireille H. Blanchard-Desce; M. Ait Amer Meziane; El Djouhar Rekai; Jean-Bernard Baudin; Ludovic Jullien; Isabelle N. Ledoux; Joseph Zyss

doi:10.1117/12.452066

18 December 2002 Hyperpolar multichromophoric nanoassembly for molecular nonlinear optics

Mireille H. Blanchard-Desce, M. Ait Amer Meziane, El Djouhar Rekai, Jean-Bernard Baudin, Ludovic Jullien, Isabelle N. Ledoux, Joseph Zyss

Author Affiliations +

Proceedings Volume 4798, Linear and Nonlinear Optics of Organic Materials II; (2002) https://doi.org/10.1117/12.452066
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

A multichromophoric nanoassembly was designed by gathering seven push-pull chromophores on a β-cyclodextrin assembling unit via covalent linkers. Such supermolecule provides a valuable model for the investigation of confinement effects on the linear and nonlinear optical properties of push-pull chromophores in the condensed phase. Push-pull chromophores display a significant ground-state dipole, thus promoting dipolar interactions that are expected to influence both the conformation and the optical properties of the multichromophoric assembly. In this perspective, the photophysical and nonlinear optical properties of the mutichromophoric bundle were investigated and compared to those of the monomeric chromophore. The absorption, circular dichroism and fluorescence investigations provide evidence that the push-pull chromophores do not behave as isolated independent chromophores within the multichromophoric assembly. The nanoscale supermolecule is hypsochromically and significantly hypochromically shifted with respect to its monomeric analogue. In addition, the close proximity promotes excitonic coupling, as well as excimer formation phenomena. The nanoscopic assembly also shows a very large dipolar moment (μ = 38 D), and a significant molecular first-order hyperpolarisability, which reveal a spontaneous sheaf-type self-arrangement of the dipolar chromophores within the supermolecule. Such chiral hyperpolar nanoassemblies are promising candidates as model systems for nanophotonics.

Citation Download Citation

Mireille H. Blanchard-Desce, M. Ait Amer Meziane, El Djouhar Rekai, Jean-Bernard Baudin, Ludovic Jullien, Isabelle N. Ledoux, and Joseph Zyss "Hyperpolar multichromophoric nanoassembly for molecular nonlinear optics", Proc. SPIE 4798, Linear and Nonlinear Optics of Organic Materials II, (18 December 2002); https://doi.org/10.1117/12.452066

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available