Spectral and photophysical properties of 1,6-naphthyridine derivatives: a new class of compounds for nonlinear optics

Mononuclear gold(iii) complexes with diazanaphthalenes: the influence of the position of nitrogen atoms in the aromatic rings on the complex crystalline properties

“…As a result, in each of the investigated crystals (1-5), the square planar coordination around Au(III) is extended to square pyramidal or tetragonal bipyramidal due to the Au/Cl intermolecular interactions and the molecular packing is dominated by the intermolecular C-H/Cl hydrogen bonds, which outnumber the other types of the specic intermolecular interactions. Notably, the p/p stacking interactions play a signicant structural role only in the centrosymmetric crystals of [AuCl 3 (benzodiazine)] complexes (1 and 2) and become either much weaker or completely absent in a series of [AuCl 3 (naphthyridine)] crystals (3)(4)(5). Geometrical parameters describing the p/p stacking interactions are listed in Table S5.…”

“…For example, 1,6-naphthyridine derivatives were reported as a new class of compounds for nonlinear optics. 3 Due to their structural properties, N-heterocycles provide rigid building blocks for molecular architectures with various transition metals, [4][5][6] so they have been extensively utilized for the formation of numerous mononuclear and polynuclear metal complexes, [7][8][9][10][11][12] metallosupramolecular assemblies with desirable structures and properties, 13 as well as for the construction of structural and functional models of metalloenzyme active sites. [14][15][16] Another important reason for investigation of gold(III) chemistry with N-heterocycles stems from the nding that use of these ligands in the synthesis of gold(III) complexes enhances the stability of Au(III) ion under physiological conditions, allowing evaluation of gold(III) complexes as potential antitumor 17 and antimicrobial agents.…”

Sodium‐Hydroxide‐Mediated Synthesis of Highly Functionalized [1,6]‐Naphthyridines in a One‐Pot Pseudo Five‐Component Reaction

“…It has earlier been reported18a,18b that naphthyridine derivatives can be used as luminescent materials for molecular recognition. Thus, we investigated the photophysical properties of naphthyridine products 4b , 4e , and 4f .…”

Non-linear optical properties of 2,7-naphthyridine derivatives for optical switching applications: a DFT study

“…D-p-A structures of 1,6-naphthyridine derivatives that exhibit second harmonic generation led to further investigations of its NLO behavior. 34 Our survey of the literature revealed that while the studies on NLO properties are limited mostly to 1,6-naphthyridines, those of 2,7-analogues are not yet explored. 29,34,35 Hence in this communication, we report the study of a novel class of 2,7-naphthyridine based push-pull NLO chromophores with potential applications in optical switching devices.…”

“…34 Our survey of the literature revealed that while the studies on NLO properties are limited mostly to 1,6-naphthyridines, those of 2,7-analogues are not yet explored. 29,34,35 Hence in this communication, we report the study of a novel class of 2,7-naphthyridine based push-pull NLO chromophores with potential applications in optical switching devices. The effect of substituents on the nonlinear optical parameters and energy gap of the parent naphthyridine compound and their NLO variation in gas and different polar and non-polar solvent phases have also been investigated.…”