In by admin

Name Ms. Lei Wang
Organization or Institution University of South Florida
Presentation Type Poster
Topic Inorganic Chemistry
Title

Stepwise Self-Assembly of Heterometallic Macrocycles Based on Terpyridine Ligand

Author(s)

Lei Wang, Xiaopeng Li

Author Institution(s)

University of South Florida

Abstract

Coordination between organic ligands and metal ions has been widely used to construct supramolecules in the field of self-assembly. However, rational design and synthesis for discrete heterometallic macrocycles have been less explored so far. Here, we utilized a stepwise strategy to design a hexagonal metallo-macrocycle based on the coordination of terpyridine ligand and three different metal ions. The metallo-ligand was achieved via connection of terpyridine motifs by Ru2+. Subsequently, supramolecular macrocycles were constructed in almost quantitative yield by stepwise self-assembly of 6 metallo-ligands with 6 Fe2+ (or Cr2+) and 12 Zn2+. Both 1D and 2D NMR spectroscopy, electrospray ionization mass spectrometry (ESI-MS), traveling-wave ion mobility mass spectrometry (TWIM-MS), and transmission electron microscopy (TEM) have been used to characterize the supramolecules. More study about tuning the redox properties of the supramolecules is currently under the way.