Synthesis, photophysical characterization and DFT studies on fluorine-free deep-blue emitting Pt(II) complexes was written by Sanning, Jan;Stegemann, Linda;Nyenhuis, Marvin;Daniliuc, Constantin G.;Doltsinis, Nikos L.;Strassert, Cristian A.. And the article was included in Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences in 2016.Synthetic Route of C7H6N2O This article mentions the following:
Herein authors show that cyclometalated, square planar Pt(II) complexes can be tuned to achieve deep-blue phosphorescent emitters. For this purpose, the introduction of an electron-donating moiety on two different bidentate NN and NO fluorine-free luminophores, namely 2-(1H-tetrazol-5-yl)pyridine and picolinic acid, was carried out. The remaining two coordination sites of the Pt(II) metal center were filled by a sterically demanding cyclometallating unit, namely a tertiary phosphite CP ligand. This ancillary ligand avoids aggregation and provides high solubility in organic solvents. Based on this approach, we were able to blue-shift the emission of the complexes down to 411 nm, and to achieve a maximal photoluminescence quantum yield of 56% in the solid state. In the experiment, the researchers used many compounds, for example, 4-methoxypicolinonitrile (cas: 36057-44-0Synthetic Route of C7H6N2O).
4-methoxypicolinonitrile (cas: 36057-44-0) belongs to nitriles. The R-C-N bond angle in and nitrile is 180° which give a nitrile functional group a linear shape. Both the carbon and the nitrogen are sp hydridized which leaves them both with two p orbitals which overlap to form the two π bond in the triple bond. Some nitriles are manufactured by heating carboxylic acids with ammonia in the presence of catalysts. This process is used to make nitriles from natural fats and oils, the products being used as softening agents in synthetic rubbers, plastics, and textiles and for making amines.Synthetic Route of C7H6N2O
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts