1442467-02-8Relevant academic research and scientific papers
Construction of Alkynylplatinum(II) Bzimpy-Functionalized Metallacycles and Their Hierarchical Self-Assembly Behavior in Solution Promoted by Pt???Pt and π–π Interactions
Jiang, Bo,Zhang, Jing,Zheng, Wei,Chen, Li-Jun,Yin, Guang-Qiang,Wang, Yu-Xuan,Sun, Bin,Li, Xiaopeng,Yang, Hai-Bo
supporting information, p. 14664 - 14671 (2016/10/03)
A family of new alkynylplatinum(II) 2,6-bis(benzimidazol-2′-yl)pyridine (bzimpy)-functionalized supramolecular metallacycles with different shapes and sizes have been successfully prepared by coordination-driven self-assembly. The obtained metallacycles showed switchable emission and a strong tendency to form intermolecular Pt???Pt and π–π stacking interactions in solution that were not displayed by their individual precursors. Further investigation revealed that the existence of the metallacyclic scaffold at the core could facilitate the formation of intermolecular Pt???Pt and π–π stacking interactions of peripheral alkynylplatinum(II) bzimpy units. Moreover, the shapes and sizes of the metallacyclic scaffold have a significant influence on the hierarchical self-assembly behavior. Among the three metallacycles, hexagonal metallacycle A, with a relatively small size, could spontaneously self-assemble into an aromatic guest stimuli-responsive metallogel at room temperature without a heating–cooling process.
Synthesis of conjugated aryleneethynylenesiloles dendron
Liu, Jie,Yan, Chenxu,Li, Shanshan,Wang, Chengyun,Shen, Yongjia
, p. 2861 - 2868 (2013/08/23)
Three routes were designed to synthesize a π-conjugated aryleneethynylenesiloles dendron. With the desilylation of the disilole mono(silylethynyl) derivative in the presence of potassium carbonate (K 2CO3), the silole-containing oligomer has been successfully synthesized without impact on the Si-(CH3)2 group. The disilole mono(silylethynyl) derivative was prepared by means of the Sonogashira heterocoupling reaction between the diacetylene compound and asymmetrical silole, catalyzed by the dichloro bis(triphenylphosphine)palladium, in a divergent synthesis. Due to their steric effect and triethynylbenzene self-coupling Glaser reaction, the endeavour to prepare the dendron by controlling the molar ratio of asymmetrical silole and 1,3,5-triethynylbenzene was failed. The another attempt to prepare the dendron by different desilylation condition of triisopropylsilyl group and trimethylsilyl group was also failed, the desilylation of Si-(CH3)2 group in silacyclopentadiene unit was also easily accomplished in the presence of tetrabutylammonium fluoride(Bu4NF), whereas no reaction occurred when K 2CO3 was used instead of Bu4NF. Copyright
