title: Synthesis and Characterization of New Conjugated Fluorenyl-Porphyrin Dendrimers for Optics.
abstract: A new family of conjugated meso-tetraphenylporphyrin-based dendrimers with four (TPP1, TPP2), eight (TPP3, TPP4, TPP5) and up to sixteen (TPP6) fluorenyl groups has been synthesized and fully characterized. These tetraphenylporphyrin-cored dendrimers present peripheral alkynyl π-conjugated dendrons with fluorenyl termini. The meso-aryl rings of these porphyrins are functionalized either in para- (TPP1, TPP2, and TPP3) or meta-positions (TPP4, TPP5, and TPP6). Their detailed luminescence properties are discussed in reference to two porphyrins lacking fluorenyl dendrons (TPP-H1,2,3 and TPP-H4,5,6). A strong dependence of their luminescence quantum yield and lifetime on their structures is stated, their nonlinear optical properties were also discussed.
authors.affiliation: Institut des Sciences Chimiques de Rennes (ISCR)-UMR CNRS 6226, Université de Rennes 1, 35042, Rennes Cedex, France.|Institut National des Sciences Appliquées (INSA), Université Européenne de Bretagne, 35043, Rennes Cedex, France.
authors.forename: Dandan
authors.initials: D
authors.lastname: Yao
authors.affiliation: Institut des Sciences Chimiques de Rennes (ISCR)-UMR CNRS 6226, Université de Rennes 1, 35042, Rennes Cedex, France.|Institut National des Sciences Appliquées (INSA), Université Européenne de Bretagne, 35043, Rennes Cedex, France.
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Institut des Sciences Chimiques de Rennes (ISCR)-UMR CNRS 6226, Université de Rennes 1, 35042, Rennes Cedex, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Mongin
authors.affiliation: Institut des Sciences Chimiques de Rennes (ISCR)-UMR CNRS 6226, Université de Rennes 1, 35042, Rennes Cedex, France.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Paul
authors.affiliation: Institut des Sciences Chimiques de Rennes (ISCR)-UMR CNRS 6226, Université de Rennes 1, 35042, Rennes Cedex, France. christine.paul@univ-rennes1.fr.|Institut National des Sciences Appliquées (INSA), Université Européenne de Bretagne, 35043, Rennes Cedex, France. christine.paul@univ-rennes1.fr.
authors.forename: Christine O
authors.initials: CO
authors.lastname: Paul-Roth
keywords: dendrimers; energy transfer; fluorenyl; fluorescence; porphyrins