Syntheses and luminescence of four supramolecular coordination complexes with flexible ligand

Three‐in‐One Strategy Constructing the First High‐Performance Nonlinear Optical Sulfide Crystallizing with the P43 Space Group

“…Therefore, it is still attractive and challengeable to explore novel high‐performance ones, namely, with large NLO effect (≥ 0.5 × AGS) and wide bandgap (≥ 3.0 eV). [ 3 ]…”

“…[ 4 ] To date, a number of NLO chalcogenides have been studied, witnessed by a series of review works on this topic. [ 1b,1c,3a,5 ] Interestingly, it can be found that most IR NLO materials with balanced NLO performances are metal sulfides crystallizing in the orthorhombic or tetragonal system. [ 3a ] The reason for this phenomenon has a lot to do with the tetrahedral functional motifs in the structures.…”

“…[ 1b,1c,3a,5 ] Interestingly, it can be found that most IR NLO materials with balanced NLO performances are metal sulfides crystallizing in the orthorhombic or tetragonal system. [ 3a ] The reason for this phenomenon has a lot to do with the tetrahedral functional motifs in the structures. As is well known, tetrahedral motif‐based compounds can endow NLO materials with different asymmetric structures due to the various connection modes of tetrahedra, and some of them also have excellent optical anisotropy, which is conducive to phase‐matchable (PM) behavior for NLO application.…”

“…As is well known, tetrahedral motif‐based compounds can endow NLO materials with different asymmetric structures due to the various connection modes of tetrahedra, and some of them also have excellent optical anisotropy, which is conducive to phase‐matchable (PM) behavior for NLO application. [ 3b ] Meanwhile, if various fourfold‐coordinated metal elements are combined together, it is easy to produce structural disorder or modulation, providing possibilities for rich structural diversity and flexibility. [ 6 ] In addition, the “electronic structure engineer bucket effect theory” [ 7 ] proposed by Prof. Chen also attracts our attention, which can roughly estimate the bandgaps of the target compounds by referring to the bandgaps of the component binary M m Q n and guide the element selection of the target compounds.…”

Synthesis, Crystal Structure, and Luminescent Properties of New Zinc(II) and Cadmium(II) Metal-Organic Frameworks Based on Flexible Bis(imidazol-1-yl)alkane Ligands

“…Among these ligands, bis(azol-1-yl)alkanes [19,20]. Recently, several papers reporting the use of bis(imidazol-1-yl) or bis(1,2,4-triazol-1-yl) derivatives for building of coordination polymers with extended networks appeared [21][22][23][24][25][26][27][28][29][30][31][32]. In this contribution we report the synthesis of four new MOFs based on zinc(II) or cadmium(II) ions, terephthalic acid (H2bdc), and flexible ligands with longer polymethylene linkers, namely 1,5-bis(imidazol-1-yl)pentane (C5) or 1,6-bis(imidazol-1-yl)hexane (C6), synthesized by an improved procedure, which is also described here.…”