Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Peter T. Litak"'
Publikováno v:
Journal of Heterocyclic Chemistry. 32:1541-1555
Dibenzofurans, a dibenzothiophene, and carbazoles, each substituted with a 2-benzoxazolyl group as well as an ortho-hydroxyl group, were synthesized to produce fluors with fluorescence due to excited-state intramolecular proton-transfer. The orientat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31d1bcc35fc24a51f0a250dec90f3c85
https://doi.org/10.1002/jhet.5570320523
https://doi.org/10.1002/jhet.5570320523
Publikováno v:
Journal of Heterocyclic Chemistry. 31:957-965
To improve the solubility, photostability and fluorescence quantum yi- eld (Φ) of 2-arylbenzimidazolium ions the N-1 hydrogen was replaced by an alkyl group before N-3 was quaternized; this substitution did not reduce Φ, proving the absence of ster
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d3c61666c9fad8effc75c1df0d69705
https://doi.org/10.1002/jhet.5570310444
https://doi.org/10.1002/jhet.5570310444
Autor:
Joel M. Kauffman, Peter T. Litak
Publikováno v:
Journal of Heterocyclic Chemistry. 31:457-479
Several bifunctionally reactive linkers containing halide or sulfonate ester groups were prepared. The linkers were used to quaternize 5-(4-methoxyphenyl)-2-(4-pyridyl)oxazole and 2-(6-chromanyl)-5-(4-pyridyl)oxazole to produce fluorescent stains tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::785675c830151c1f1604fbc0b1ec1e69
https://doi.org/10.1002/jhet.5570310236
https://doi.org/10.1002/jhet.5570310236
Publikováno v:
ChemInform. 27
Dibenzofurans, a dibenzothiophene, and carbazoles, each substituted with a 2-benzoxazolyl group as well as an ortho-hydroxyl group, were synthesized to produce fluors with fluorescence due to excited-state intramolecular proton-transfer. The orientat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d23d27aeee7fe3ac54016cb831466e9
https://doi.org/10.1002/chin.199613135
https://doi.org/10.1002/chin.199613135
Autor:
Jeffrey K. Adams, Joel M. Kauffman, J. Herbert Hall, Peter T. Litak, Richard A. Hollins, Joseph Yuming Chien, Ronald A. Henry
Publikováno v:
Journal of Heterocyclic Chemistry. 29:1245-1273
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)cycloalkano[d]oxazoles, and many of their quaternary salts were prepared. No single standard synthesis was effective for p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce9f1d3572030a3db09d151de0a332e3
https://doi.org/10.1002/jhet.5570290534
https://doi.org/10.1002/jhet.5570290534
Publikováno v:
AIP Conference Proceedings.
A number of original proton-transfer fluors were prepared as shifters for green-emitting scintillating fibers of multi-meter lengths. Quantum efficiencies up to 0.52 are reported for the new fluors which showed emission maxima between 478 and 612 nm.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::faabb4c9b214aee07d8d72e015db662f
https://doi.org/10.1063/1.56948
https://doi.org/10.1063/1.56948
Autor:
Joel M. Kauffman, Peter T. Litak, Alem Ghiorghis, John A. Novinski, Charles J. Kelley, Yuanxi Qin
Publikováno v:
Journal of fluorescence. 5(3)
Absorption and fluorescence emission spectral data, as well as fluorescence quantum yields (Φf), were determined for 41p-oligophenylene compounds containing 2–6, 8, and 10 benzene rings. Of 29 compounds containing carbon-bridged rings (fluorenes),
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1d0855e2c683bba6af10c51dffb2473
https://pubmed.ncbi.nlm.nih.gov/24226797
https://pubmed.ncbi.nlm.nih.gov/24226797