262-09-9Relevant articles and documents
Revealing the internal heavy chalcogen atom effect on the photophysics of the dibenzo[a,j]phenazine-cored donor-acceptor-donor triad
Data, Przemyslaw,Decarli, Nicolas Oliveira,Goto, Shimpei,Minakata, Satoshi,Nitta, Yuya,Stachelek, Patrycja,Takeda, Youhei,Tohnai, Norimitsu,de Silva, Piotr,de Sousa, Leonardo Evaristo
, p. 13942 - 13953 (2021/10/20)
A new twisted donor-acceptor-donor (D-A-D) multi-photofunctional organic molecule comprising phenoselenazine as the electron donor (Ds) and dibenzo[a,j]phenazine (DBPHZ) as the electron acceptor (A) has been developed. The developed selenium-incorporated D-A-D compound features multi-color polymorphism, distinct mechanochromic luminescence, chemically-stimulated luminochromism, thermally-activated delayed fluorescence, and room-temperature phosphorescence. The internal heavy atom effect on the photophysical properties of the D-A-D system has been investigated through a comparison with the physicochemical properties of a previously developed sulfur analogue and a tellurium analogue.
5-AZA-10-TELLURA-5,10-DIHYDROANTHRACENES (PHENOTELLURAZINES)
Junk, Thomas,Irgolic, Kurt J.
, p. 1007 - 1013 (2007/10/02)
5-Aza-10-tellura-5,10-dihydroanthracene (phenotellurazine) was prepared in seven percent yield by mercurating diphenylamine with mercury(II) acetate, converting the 4-acetatomercurodiphenylamine to the chloro derivative, and reacting it with tellurium tetrachloride.The 4-(phenylamino)phenyltellurium trichloride was not isolated but refluxed in glacial acetic acid for twelve hours to cause isomerization to 2-(phenylamino)phenyltellurium trichloride and cyclization to phenotellurazine 10,10-dichloride, which was reduced with aqueous sodium sulfide to phenotellurazine.Benzophenotellurazine was similarly obtained in 53 percent yield starting with 2-(phenylamino)naphthalene.The phenotellurazines were characterized by elemental analyses, 1H-, 13C- and 125Te- nmr spectroscopy, and mass spectrometry.
