Preparation and self-aggregation properties of a series of pyrene-imidazolylidene complexes of gold (I)

Highly emissive supramolecular gold(i)–BTD materials

“…Bond distances between the gold( i ) centre and the C of both ligands occupying the linear geometry and the imidazole and the alkynyl-BTD, are around 2.0 Å, similar to other compounds with an alkynyl and an imidazole attached to a gold( i ) atom. 33,34 In both cases torsion angles around 20° between the BTD moiety and the linked phenylnonyl moieties are observed, however dihedral angles between the BTD and the imidazole ligands differ significantly in the two complexes being 67.28° to 8.40° in 2 and 3 respectively.…”

Heterometallic Au(I)–Cu(I) Clusters: Luminescence Studies and1O2Production

“…We observe that, in both cases, these clusters derived from phenanthrene present a more open conformation in comparison with the analogous naphthalene Cu1a, which could be ascribed to the higher volume of the chromophore and to the inclusion of two chlorine atoms (that may come from the formation of some HCl traces from the solvent of crystallization during the crystal growth) bonded to the Cu(I) atoms. As observed for Cu2a, this compound presents two different distances to the centroid generated by the two C�C moieties with a d Cu−C�C(centroid) = 2.036(6) and 2.042( 6) Å (2.053 (7) Å for Cu2a and Cu2c, slightly larger than in the naphthalene analogous, probably due to the resulting more open structure (Table 1). Photophysical Properties.…”

“…Polydentate ligands are one of the most employed methods to generate complexes with a large number of atoms in their structure. − The chemical structure of these ligands can be modified to include different donor atoms, and following this strategy, a wide variety of metallic clusters, polymers, aggregates, and supramolecular structures have been reported in the literature. − Among polydentate ligands, the use of pyridylphosphane seems an ideal choice for the construction of heterometallic structures derived from group 11 elements due to their tendency to coordinated Au­(I) through the phosphorus atom and to Ag­(I) or Cu­(I) through nitrogen centers. The presence of additional ancillary ligands such as acetylide groups may also favor the coordination of Ag­(I) or Cu­(I), promoting the formation of complex heterometallic assemblies. − …”

Pyrene-Based AIE Active Materials for Bioimaging and Theranostics Applications

“…Due to the π–π stacking property, the monomer and excimer emission of pyrene-based derivatives displays distinct emissive properties in the presence of analytes, thereby, acting as stimuli responsive materials [ 37 , 38 , 39 , 40 , 41 , 42 ]. Likewise, pyrene containing metal-organic frameworks (MOFs) and metallocages are highly emissive materials due to their self-aggregation nature, which were utilized as emitters and reactive oxygen species (ROS) generators [ 43 , 44 , 45 , 46 , 47 ].…”