Hierarchical Assembly toward Nanoparticles of a Chiral Palladium Supramolecular Complex Based on Bicyclo[3.3.1]nonane Framework

Abstract

The cyclic supramolecular coordination constructs were synthesized via metal-directed self-assembly from cis-protected Pd(II) precursor and chiral and racemic C 2 symmetric V-shaped bicyclo[3.3.1]nonane-based ligands incorporating pyridyl groups. In the complexes, these ligands act as bridges to connect together metal centers resulting in dinuclear and tetranuclear assemblies capable of further hierarchical aggregation on surfaces as well as in solution. Supramolecular structures obtained were characterized by mass spectrometry and NMR spectroscopy. Chiroptical properties of the ligand and the corresponding complex have also been analyzed. Moreover, the atomic force microscopy and dynamic light scattering experiments revealed a formation of stable nanoparticles from these complexes in the solution and the solid state.

Understanding the activity of glucose oxidase after exposure to organic solvents

“…39 Moreover, we observed that charged complexes aggregated into nanoparticles because the charged molecules lowered the surface tension of the solution. 40 A closer look at the catalytic active site during the simulation gives a further possible clue to the passivity of GOx in DMSO and DMF, in contrast with the other organic solvents: the ability of these polar solvents to block the active site. Fig.…”

“…39 Moreover, we observed that charged complexes aggregated into nanoparticles because the charged molecules lowered the surface tension of the solution. 40…”

Topical progress in medicinal applications of self‐assembled organoplatinum complexes using diverse Pt(II)‐ and N‐based tectons

“…[9] The resulting chiral metallosupramolecular structure is unlikely to racemize since its chirality is intended by the use of an enantiopure chiral ligand prior to the self-assembly reaction. Various chiral bridging ligands that include chiral amino acid derivative (N1), [50] BINOL (N25), [51] binaphthyl derivatives (N26), [52] and rigid bicyclo[3.3.1] nonane bridges (N27), [53] have been utilized to efficiently yield chiral metallomacrocycles. Representative examples of chiral ligands are presented in Figure 5.…”

Emerging Spacers‐Based Ligands for Supramolecular Coordination Complexes

“…Orentas and co‐workers reported a dinuclear Pd(II) cycle by using a V‐shaped bicyclo[3.3.1]nonane‐based spacer with bis‐ethynylpyridine coordinating motifs (L 7 ) [24] . The self‐assembly of [ 7 ] 4+ was carried out using cis ‐protected Pd(II) to ensure the formation of a discrete cycle.…”