Synthesis, structure and luminescence properties of Cu(ii), Zn(ii) and Cd(ii) complexes with 4′-terphenylterpyridine
作者:Young Hoon Lee、Emi Kubota、Akira Fuyuhiro、Satoshi Kawata、Jack M. Harrowfield、Yang Kim、Shinya Hayami
DOI:10.1039/c2dt31245j
日期:——
The complexes [M(tptpy)2](ClO4)2 (M = Zn(II) (1), Cd(II) (2), and Cu(II) (3)); tptpy = 4â²-[1,1â²:4â²,1â²â²]terphenyl-4â²â²-yl-[2,2â²:6â²,2â²â²]terpyridine = 4â²-terphenylterpyridine) have been synthesized, structurally characterized by X-ray crystallography and subjected to preliminary luminescence studies. In the crystalline state, all the metal ions have an N6 coordination sphere of distorted octahedral geometry and the structures of the Zn(II) and Cd(II) complexes are isomorphous but differ from that of the Cu(II) complex, which also differs from the other two in that it is non-emissive. The structure determinations show that aromaticâaromatic interactions involving both the terpyridine heads and the terphenyl tails are important factors influencing the crystalline array. The emission spectra of the Zn(II) and Cd(II) complexes are very similar and show a considerable red-shift of the emission maximum compared to that of the free ligand.
A series of metallo‐supramolecular ring‐in‐ring structures was generated by assembling CdII ions and the multivalentterpyridineligands (L1‐3) composed of one 60°‐bent and two 120°‐bent bis(terpyridine)s with varying alkyl linker lengths. The mechanistic study for the self‐assembly process excluded an entropically templated pathway and showed that the intramolecularly complexed species is the key
Self-assembly of metal–organic coordination networks using on-surface synthesized ligands
作者:Tao Lin、Guowen Kuang、Xue Song Shang、Pei Nian Liu、Nian Lin
DOI:10.1039/c4cc07604d
日期:——
A two-step strategy consisting of on-surface synthesis and supramolecular assembly is developed for constructing low-dimensional molecular nanostructures on surfaces.
开发了一种由表面合成和超分子组装构建低维分子纳米结构的两步策略。
Lattice interactions of terpyridines and their derivatives – free terpyridines and their protonated forms
作者:Young Hoon Lee、Jee Young Kim、Yang Kim、Shinya Hayami、Jong Won Shin、Jack Harrowfield、Artur R. Stefankiewicz
DOI:10.1039/c6ce01435f
日期:——
Consideration of the crystal structures of four new 2,2′;6′,2′′-terpyridine derivatives in terms of the weak lattice interactions which can be discerned through calculation of their Hirshfeld surfaces shows that despite the common feature of stacking of the near-planar aromatic entities, specific interactions beyond dispersion within the stacked arrays are relatively uncommon. This is in accord with
Two metallo-triangles, SA and SB, with cis-TPE motifs were constructed, and their fluorescenceproperties were explored. Compared with the dilute solution, both triangles SA and SB exhibited significant AIE behavior in the aggregated states. Moreover, the shorter version SA showed higher quantum yields than SB in the aggregated states.