151427-04-2Relevant articles and documents
Facile synthesis of 6-aryl-3-pyridyl-1,2,4-triazines as a key step toward highly fluorescent 5-substituted bipyridines and their Zn(II) and Ru(II) complexes
Kozhevnikov, Valery N.,Shabunina, Olga V.,Kopchuk, Dmitry S.,Ustinova, Maria M.,K?nig, Burkhard,Kozhevnikov, Dmitry N.
, p. 8963 - 8973 (2008/12/22)
A wide series of substituted bipyridines were obtained through the synthesis of 1,2,4-triazines and their aza Diels-Alder reactions. The reported method facilitates the synthesis of functionally diverse bipyridines that provides fine-tuning of photophysical properties of new ligands and their Zn(II) and Ru(II) complexes. Some of substituted bipyridines exhibit 'off-on' fluorescence response toward Zn2+ cations.
Syntheses and Photophysical Properties of Some 5(2)-Aryl-2(5)-(4-pyridyl)oxazoles and Related Oxadiazoles and Furans
Hall, J. Herbert,Chien, Joseph Yuming,Kauffman, Joel M.,Litak, Peter T.,Adams, Jeffrey K.,et al.
, p. 1245 - 1273 (2007/10/02)
A number of 5-aryl-2-(4-pyridyl)oxazoles, a 2-aryl-5-(4-pyridyl)oxazole, the related oxadiazole and furan, several 2-(4-pyridyl)cycloalkanooxazoles, and many of their quaternary salts were prepared.No single standard synthesis was effective for preparation of more than a few of the 25 free bases described; methods often unique to a base were employed.Minor variations in structure sometimes produced large differences in absorption and emission wavelengths, as well as in the magnitude of the extinction coefficient.The salts are of interest as laser dyes, scintillation fluors, biological stains, and shifters for luminescent solar concentrators.