Transition metal-based chiroptical switches for nanoscale electronics and sensors

Synthesis and Characterization of a Series of Ruthenium Tris(β‐diketonato) Complexes by an UHV‐STM Investigation and Numerical Calculations

“…This corresponds to the progressive replacement of dbm by the acac ligand. [37,47] The spectrum of [Ru(dbm) 3 ], which has a D 3 symmetry, is simple: it consists of four peaks, three from the phenyl protons and one from the methyne protons of the ligands in accordance with the work of Endo et al [47] The signal of the methyne protons for all the ruthenium(III) complexes appears at a very high-field region because of the paramagnetism of the ruthenium(III) complexes. On going from complex 1 to complex 2 all the phenyls protons are doubled because of the loss of symmetry.…”

“…During the night, the solution turned to orange and in the morning, it was cooled to add another portion of KHCO 3 (1.23 g, 12.3 mmol). The solution was put under reflux yet again for 4 h, and then the last portion of KHCO 3 (1.24 g, 12.4 mmol) was added to the cooled solution. A black precipitate gradually appeared with the addition of KHCO 3 .…”

“…Beyond any chemical application, metal complexes embedded into supramolecular assemblies are potential building blocks for molecular electronics. [1][2][3][4][5][6][7][8] Therefore, studying the functional molecules on a substrate and investigating their behaviour and properties are primary requirements for potential applications, since the molecular deformation due to surface interaction plays a crucial role. [9][10][11] New progress and possibilities in using metal complexes for molecular electronics has been reviewed recently, highlighting that the electronic state of metal complexes is attractive for conducting highly integrated, functional molecular components.…”

Determination of Enantiomeric Excess in Amine Derivatives with Molecular Self‐Assemblies

“…[7] As an alternative,circular dichroism (CD) has been used and recently brought to ah igh-throughput level. [8] Alas,t hese methods require high concentrations of analytes,s trict conditions,a nd-with few exceptions-are too slow for high throughput-screening (HTS). [9] Fort he above reasons we have decided to develop as ensitive and HTS-amenable assay for chiral amines and their derivatives.W et ake advantage of at ernary system comprising an a-chiral primary amine,2 -formylphenylboronic acid (FPBA), and enantiomerically pure 1,1'-bi-2-naphthol (BINOL), which assemble rapidly and lead to characteristic 1 HNMR spectroscopic shifts for each enantiomer of the amine (Scheme 1).…”

Methylsulfanyl‐Stabilized Rotamers of Cobalt Bis(dicarbollide)

“…Therefore, there is growing interest in molecular switches based on transition-metal complexes. [4] Typical examples of such molecular switches are the bis-(dicarbollide) complexes of transition metals [3,3′-M(1,2-, which are isoelectronic analogues of metallocenes. Unlike cyclopentadienyl ligands, dicarbollide ligands contain two carbon atoms and three boron atoms in their open pentagonal faces, which results in energy nonequivalence for the different rotamers.…”