Near-Infrared Luminescence from Visible-Light-Sensitized Ruthenium(II)-Neodymium(III) Heterobimetallic Bridged Complexes Containing Alkoxy(silyl) Functional Groups
Artikel i vetenskaplig tidskrift, 2020

New infrared emitting d-f (ruthenium(II)–neodymium(III)) heterobimetallic complexes with alkoxy(silyl) functional groups have been prepared. Visible excitation evidenced energy transfer processes from the ruthenium(II) donor to neodymium(III) acceptors leading to infrared emission. Energy transfer rates (kEnT) and efficiency of energy transfer (ηEnT) are, respectively, 0.61 × 107 s-1 and 44% for RuL1–NdL3 complex. Larger values of kEnT (3.04 × 107 s-1) and ηEnT (84%) were detected for RuL2–NdL4 complex. RuL1–NdL3 and RuL2–NdL4 complexes were fully characterized by elementary analysis (EA), mass spectrometry (MS), Fourier transform infrared spectroscopy (FTIR) and Fourier transform Raman spectroscopy (FT-Raman). Total correlation spectroscopy (TOCSY1D), 1H{13C} heteronuclear single quantum correlation (HSQC) and 1H{13C} heteronuclear multiple bond correlation (HMBC) nuclear magnetic resonance (NMR) analyses were also carried out to characterize NdL3 and RuL1–NdL3 complexes. The presence of trialkoxysilyl-substituted ligands would allow further grafting onto any silica or silicated surface aiming at applications as new luminescent near infrared (NIR)-emitting biosensors or biomarkers.

D-f energy transfer

Visible

NIR luminescent complexes

Silylated heterobimetallic complexes

Grafting trialkoxysilyl group

Ruthenium(II)

Neodymium(III)

Författare

Rafael M. Sábio

Centre Inter-universitaire de Recherche et d’Ingénierie des Matériaux

Universidade Estadual Paulista (UNESP)

Silvia H. Santagneli

Universidade Estadual Paulista (UNESP)

Marie Gressier

Centre Inter-universitaire de Recherche et d’Ingénierie des Matériaux

José M.A. Caiut

Universidade de Sao Paulo (USP)

Wallance M. Pazin

Universidade de Sao Paulo (USP)

Robson R. Silva

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Sidney J.L. Ribeiro

Universidade Estadual Paulista (UNESP)

Marie Joëlle Menu

Centre Inter-universitaire de Recherche et d’Ingénierie des Matériaux

Journal of the Brazilian Chemical Society

0103-5053 (ISSN) 1678-4790 (eISSN)

Vol. 31 4 694-702

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Organisk kemi

DOI

10.21577/0103-5053.20190233

Mer information

Senast uppdaterat

2020-07-20