3393-78-0Relevant articles and documents
Synthesis, aggregation-induced emission properties and mechanofluorochromic behavior of sulfur connected bis(tetraphenylethene) luminogens
Wu, Jiang,Yin, Jun,Chen, Sheng,Xiao, Hongyan,Yan, Bin,Yang, Qin
, (2021)
Three novel bis(tetraphenylethene) (BTPE) derivatives 1–3 were efficiently synthesized. All the materials exhibited aggregation-induced emission characteristics, and the dynamic light scattering measurments proved that the average diameter of the oxidised analogues 2 and 3 was less than that of the thioether precursor 1 due to the oxidation of the linking S-atom. Linking two tetraphenylethylenes via a sulfur atom with different oxidation states offered compounds which showed reversible mechanofluorochromic behavior. The crystal-to-amorphous phase conversion process was responsible for the mechanofluorochromism. Most notably, sulfone-based BTPE 3 presented polymorphism due to different packing modes, and the three observable morphologies could be interconverted.
Palladium-catalysed thioetherification of aryl and alkenyl iodides using 1,3,5-trithiane as sulfur source
Kollár, László,Pongrácz, Péter,Rajat Rao, Yalamarti Venkat,Zugó, Alexandra
, (2021/12/17)
Thioetherification reaction of aryl iodides catalysed by palladium(II) complexes in the presence of 1,3,5-trithiane as sulphur source is reported. The paper presents the first homogeneous catalytic application of 1,3,5-trithiane in synthesis. Detailed optimization steps, the frames of the novel reaction are described, as well as the limitations and the substrate scope are also demonstrated. Moderate to good thioether yields were achieved in the presence of various substituted iodobenzenes and some alkenyl iodides, using palladium-xantphos catalyst system. Competitive reactions in the presence of mixed substrates were also performed and mechanistic considerations were assumed.
Solid-State C-S Coupling in Nickel Organochalcogenide Frameworks as a Route to Hierarchical Structure Transfer to Binary Nanomaterials
Ananikov, Valentine P.,Degtyareva, Evgeniya S.,Galushko, Alexey S.,Kashin, Alexey S.
, (2020/08/12)
In this work, the transfer of the flexible and easily tunable hierarchical structure of nickel organochalcogenides to different binary Ni-based nanomaterials via selective coupling of organic units was developed. We suggested the use of substituted aryl groups in organosulfur ligands (SAr) as traceless structure-inducing units to prepare nanostructured materials. At the first step, it was shown that the slight variation of the type of SAr units and synthetic procedures allowed us to obtain nickel thiolates [Ni(SAr)2]n with diverse morphologies after a self-assembly process in solution. This feature opened the way for the synthesis of different nanomaterials from a single type of precursor using the phenomenon of direct transfer of morphology. This study revealed that various nickel thiolates undergo selective C-S coupling under high-temperature conditions with the formation of highly demanding nanostructured NiS particles and corresponding diaryl sulfides. The in situ oxidation of the formed nickel sulfide in the case of reaction in an air atmosphere provided another type of valuable nanomaterial, nickel oxide. The high selectivity of the transformation allowed the preservation of the initial organochalcogenide morphologies in the resulting products.
