Synthesis and two-photon absorption spectrum of fluorenone-based molecules

[Display omitted] •Five different fluorenone-based compounds were synthesized.•Their two-photon absorption cross-sections range from 100 to 230GM, around 720nm.•Experimental data agreed with quantum chemical calculations.•Studied compounds can be used as probes for two-photon microscopy. The two-pho...

Full description

Saved in:

Bibliographic Details
Published in:	Chemical physics letters Vol. 661; pp. 143 - 150
Main Authors:	Dipold, J., Batista, R.J.M.B., Fonseca, R.D., Silva, D.L., Moura, G.L.C., dos Anjos, J.V., Simas, A.M., De Boni, L., Mendonca, C.R.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 16-09-2016
Subjects:	Density Function Theory Fluorenone Two-photon absorption Two-photon absorption Density Function Theory Fluorenone
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	[Display omitted] •Five different fluorenone-based compounds were synthesized.•Their two-photon absorption cross-sections range from 100 to 230GM, around 720nm.•Experimental data agreed with quantum chemical calculations.•Studied compounds can be used as probes for two-photon microscopy. The two-photon absorption (2PA) of five symmetrical fluorenone-based molecules is studied by femtosecond wavelength-tunable Z-scan, as well as quantum-chemical calculations. The molecules are transparent for wavelengths greater than 500nm and two main one-photon absorption bands are observed in the blue region; one weak, centered at 450nm, and a stronger one at approximately 360nm. We observed a strong 2PA band located around 720nm with maxima 2PA cross-sections between 100 and 230GM. Quantum chemical calculations employing the response function formalism were performed at the Density Function Theory level to support the interpretation of the experimental nonlinear spectra.
ISSN:	0009-2614 1873-4448
DOI:	10.1016/j.cplett.2016.08.068