Preparation, Photophysical, Electrochemical, and Sensing Properties of Luminescent Tetrazine-Doped Silica Nanoparticles

Jérémy Malinge (1) , Clémence Allain (1) , Laurent Galmiche (1) , Fabien Miomandre (1) , Pierre Audebert (1)

1 PPSM - Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires

Luminescent hybrid silica nanoparticles grafted with tetrazines fluorophores have been synthesized and characterized, and their photophysical and electrochemical properties have been studied in acetonitrile solutions. The photophysical behavior of the functionalized nanoparticles shows a bright fluorescence emission, with emission and excitation bands typical of chloroalkoxytetrazines fluorophores, albeit with some degree of quenching because of interchromophoric interactions. Their fluorescence emission properties have been studied in the presence of various low molecular weight amines. Extinction of the fluorescence of the nanoparticles because of photoinduced electron transfer between the photoexcited tetrazine and the amine is observed, making these functionalized nanoparticles potentially useful for amine sensing.

Mots clés: fluorescence; silica nanoparticles; tetrazines; electrochemistry; fluorescent sensor

Domaines: Chimie théorique et/ou physique; Chimie organique; Matériaux

Jérémy Malinge, Clémence Allain, Laurent Galmiche, Fabien Miomandre, Pierre Audebert. Preparation, Photophysical, Electrochemical, and Sensing Properties of Luminescent Tetrazine-Doped Silica Nanoparticles. Chemistry of Materials, 2011, 23 (20), pp.4599. ⟨10.1021/cm202223w⟩. ⟨hal-00645017⟩