Diaroyl(methanato)boron difluoride compounds as medium-sensitive two-photon fluorescent probes

Publication Type:

Journal Article

Source:

CHEMISTRY-A EUROPEAN JOURNAL, WILEY-V C H VERLAG GMBH, Volume 10, Number 6, PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY, p.1445-1455 (2004)

DOI:

10.1002/chem.200305321

Keywords:

ABSORPTION CROSS-SECTIONS; BOND-LENGTH ALTERNATION; CHARGE-TRANSFER; CHROMOPHORES; DYES; EXCITATION; MOLECULES; MULTIBRANCHED STRUCTURES; NONLINEAR-OPTICAL PROPERTIES; SPECTROSCOPY

Abstract:

This paper evaluates the use of diaroyl(methanato)boron difluoride compounds for designing efficient fluorescent probes through two-photon absorption. Three different pathways allowing for the syntheses of symmetrical and dissymmetrical molecules are reported. The stable diaroyl(methanato)boron difluoride derivatives can be easily obtained in good yields. They exhibit a large one-photon absorption that is easily tuned in the near-UV range. Their strong fluorescence emission covers the whole visible domain. In addition to these attractive linear properties, several diaroyl(methanato)boron difluoride derivatives possess significant cross sections for two-photon absorption. The derived structure-property relationships are promising for designing new generations of molecules relying on the diaroyl(methanato)boron difluoride backbone.