Pseudodesmin A is a cyclic lipodepsipeptide (CLP) of the viscosin group with a moderate in vitro biological activity. For several CLPs, including members of this group, this activity has been related to the ability to form ion pores in cellular membranes. As their size does not allow individual CLPs to span the membrane bilayer, individual monomers must somehow assemble into a larger structure....

A new dinuclear gold(I) complex, possessing a bridging diphosphine ligand (1,2-bis(diphenylphosphino)ethane) and two terminal thiol ligands (1-thioglycerol), was synthesized fully characterized by IR, 1H 31P NMR, fluorescence, ESI-mass, diffuse reflection spectroscopy, together with X-ray diffraction elemental analyses. The compound formed 1D chain supramolecular structure through intermolecula...

The hydrogen-bonded systems formed between 5-bromo-isophthalic and trimesic acid derivatives and the trinuclear arene-ruthenium cluster cation [H3Ru3(C6H6)(C6Me6)2(O)] (1) have been studied in the solid state by single-crystal X-ray structure analysis of th tetrafluoroborate salts. The structure analysis of 5-bromo-isophthalic acid with [1][BF4] shows a 1:1 (acid:cluster) supramolecular system ...

Aggregates of charged amphiphilic molecules have been found to access a structure at elevated temperature that templates alignment of supramolecular fibrils over macroscopic scales. The thermal pathway leads to a lamellar plaque structure with fibrous texture that breaks on cooling into large arrays of aligned nanoscale fibres and forms a strongly birefringent liquid. By manually dragging this ...

Design of a structurally defined helical assembly is described that involves recoding of the amino acid sequence of peptide GCN4-pAA. In solution and the crystalline state, GCN4-pAA adopts a 7-helix bundle structure that resembles a supramolecular lock washer. Structurally informed mutagenesis of the sequence of GCN4-pAA afforded peptide 7HSAP1, which undergoes self-association into a nanotube ...

Metal-organic coordination polymers are a class of organic–inorganic materials consists of metal ions linked together through multi-dentate organic ligands, to form a polymeric chain. These materials have received a great deal of attention in a wide range of different areassuch as catalysis, sensing, luminescence, separation and storage used . The new nano flowerPb(II) 1Dmetal-organic chain {[P...

The new coordination polymer [Cd(oct)(L)] (H2oct = octanedioic acid and L = 2-(4-fluorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline) has been synthesized under hydrothermal condition and characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. Crystal data: C27H23CdFN4O4, monoclinic, space group C2/c, a = 21.391(4), b = 18.180(4), c = 14.031(3) Å, β = 116.50(3...

Friedel-Craft acylation at 100 °C of 2,5,9,9-tetramethyl-6,7,8,9-tetrahydro-5H-benzocycloheptene [ar-himachalene], a sesquiterpenic hydrocarbon obtained by catalytic dehydrogenation of α-, β- and γ-himachalenes, produces a mixture of two compounds: (3,5,5,9-tetramethyl-6,7,8,9-tetrahydro-5H-benzocyclohepten-2-yl)-ethanone (2, in 69% yield), with a conserved reactant backbone, and 3, with a diff...

Supramolecular organic systems can be used as a host for the encapsulation of small molecules. Here, we chose melamine barbiturate robust system capable supramolecular assembly and Rhodamine 6G dye entrapment guest molecule. The was investigated by UV-visible spectroscopy, SEM optical fluorescent microscopy while insight into crystal structure obtained single powder XRD. For investigation syste...