Synthesis Of Alkyne Metathesis Catalyst And P - Type Semiconductor HBC Molecular Band

Solar cell is also called "photovoltaic devices". It turns light energy into electrical energy when materials are radiated with light which causes the change of electric potential distribution so that the current is generated. The organic solar cells have a lower cost, a lighter weight, a flexible way of processing and a easier way of massive production. They are expected to function as a substitute of inorganic solar cells and to be better in materials and fabrication techniques.Large polycyclic aromatic hydrocarbons or nanographenes have kindled great excitement for their unique electronic and self-assembly properties in a variety of fields of scientific and technological applications.The use of planar molecules is one unifying design feature in essentially all the molecules that have been tested to date in electrical devices. Also, one significant aspect of using a nonplanar core is that the aromatic rings would be forced to adopt new and unusual intermolecular contacts that are typically unavailable to planar molecules. Herein, we synthesized a kind of nonplanar organic small molecules, the HBC dimer, utilizing Barton-Kellogg olefination reaction and Katz-modified Mallory photocyclization.The Mortreux-type catalyst was found to catalyze the discrimination of alkynes. After a series of modifications, alkynyl ethers and diaryl acetylenes were synthesized. Two plausible mechanisms, metallocarbene-type and metalocarbyne-type mechanisms were proposed. Molybdenum and tungsten-carbyne complexes were synthesized and used to catalyze the metathesis reaction of functionalized diynes to afford the corresponding carbon-carbon triple bond-containing macrocycles.Graphdiyne is the first two-dimensional carbon allotrope with sp, sp2, and sp3 three hybridization states, which is predicted to be the most stable of non-natural carbon allotropes. Due to its remarkable electronic structure, graphdiyne will be widely applied in the field of electronics, semiconductors and materials.In this paper, we synthesized three kinds of catalyst ligands with different functional groups through reductive amination. Then we can discuss how can the electronic density influence the catalytical ability. Also, we can use these catalysts to synthesize gradiyne.