Chromenes involving a two-photon absorbing moiety: photochromism via intramolecular resonance energy transfer

Laura Bekere (1) , Vladimir Lokshin (1) , Mark Sigalov (2) , Raz Gvishi , Peng Zhao (3) , David Hagan (3) , Eric van Stryland (3) , Vladimir Khodorkovsky (1)

1 CINaM - Centre Interdisciplinaire de Nanoscience de Marseille
2 BGU - Ben-Gurion University of the Negev
3 UCF - University of Central Florida [Orlando]

New derivatives involving the photochromic 2H-benzo[h]chromene moieties covalently linked to the 2,7-bis(carbazolyl)fluorene-derived two-photon absorbing moiety were designed to enable the possibility of resonance energy transfer from the fluorene donor to the photochromic acceptor. The longest wavelength absorption of the photochromic acceptors overlaps with the fluorescence band of the two-photon absorbing donor and the distance between the both moieties is about 5–7 Å. Rapid coloration of colorless solutions was observed upon one- and two-photon absorption.

Domaines: Chimie organique; Chimie théorique et/ou physique

Laura Bekere, Vladimir Lokshin, Mark Sigalov, Raz Gvishi, Peng Zhao, et al.. Chromenes involving a two-photon absorbing moiety: photochromism via intramolecular resonance energy transfer. New Journal of Chemistry, 2016, 40 (2), pp.1143-1148. ⟨10.1039/C5NJ02490K⟩. ⟨hal-03500747⟩