In the title compound, C(10)H(11)ClN(4)O(2)S, the triazole ring carries methyl and ethoxy-carbonyl groups and is bound via a methyl-ene bridge to a chloro-thia-zole unit. There is also evidence for significant electron delocalization in the triazolyl system. Intra- and inter-molecular C-H⋯O hydrogen bonds together with strong π-π stacking inter-actions [centroid-centroid distance 3.620 (1) Å] s...

In the last decade, π-conjugated polymeric materials have emerged as promising semiconductors for low-cost organic optoelectronic applications, such as organic thin-fi lm transistors (OTFTs) [ 1 ] and photovoltaics (OPVs) [ 2 ] to cite two device categories. Planar π-conjugated building blocks represent a key target for highperformance polymeric semiconductors, since π-system planarization faci...

The title compound, C(9)H(8)O(4)S, affords a zigzig chain in the crystal structure by inter-molecular O-H⋯O hydrogen bonds. The molecular geometry suggests that extensive but not uniform π-electron delocalization is present in the benzene ring and extends over the exocyclic C-S and C-C bonds.

The title compound, C(9)H(8)N(4)O(3)S, shows a layer structure constructed from inter-molecular O-H⋯O and O-H⋯N hydrogen bonds. Inter-atomic distances suggest that extensive, but not uniform, π-electron delocalization is present in the tetra-zole rings and extends over the exocyclic C-S bond.

Electrical conductivity of organic semiconductor materials represents one of the critical parameters that control the performance efficiency of organic-based electronic and optoelectronic devices. For materials assembled from planar aromatic molecules, evidence suggests that charge carrier mobility is usually maximized along the direction of cofacial π-π stacking of the molecules.1-3 While such...

Photodriven electron-transport properties of the self-assemblies of N,N'-di(2-(trimethylammoniumiodide)ethylene)perylenediimide stacks (TAIPDI)(n) with three electron donors, disodium 4,4'-bis(2-sulfonatostyryl)biphenyl (BSSBP, stilbene-420), sodium 9,10-dimethoxyanthracene-2-sulfonate (DANS) and disodium 6-amino-1,3-naphthalenedisulfonate (ANADS) have been studied in water. These electron dono...

stability of the π-π stacking interactions in the ben||n-substituted-coronene complexes was studied using the computational quantum chemistry methods (where ben is benzene and || denotes π-π stacking interaction, and n-substituted-coronene is coronene molecule which substituted with different number of n atoms). the results reveal simultaneous effects of structure and number of heteroatom on th...

The chromophore of fluorescent proteins, including the green fluorescent protein (GFP), contains a highly conjugated imidazolidinone ring. In many fluorescent proteins, the carbonyl group of the imidazolidinone ring engages in a hydrogen bond with the side chain of an arginine residue. Prior studies have indicated that such an electrophilic carbonyl group in a protein often accepts electron den...

A series of meso-meso, β-β, β-β triply linked linear, radial and square-type zinc(II) porphyrin arrays consist of the constituent porphyrin units and naphthalene junctions. To understand the unique nature of triply linked porphyrin arrays, numerous research activities have been focused on the electronic structures of the constituent porphyrin units. In this study, however, we have paid attentio...

Ni( ii ) π-back bonds with CO of flavonolate (fla − and enolate fla σ-bonds synergistically. π-Delocalization in activates it to release CO.