1949
DOI: 10.1002/cber.19490820302
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Ein blau fluorescierendes Bestrahlungsprodukt von Triphenyl‐tetrazolium‐chlorid

Abstract: Am dem Iiai~cr-M'11lic~h1i-~nstitut fdr .\lt~dizinisclic~ Ij'orscliuung Eldelhrrg, Iiistitnt filr I'fiysilialisclie Thwapic und lnatitnt fur ('heinie*). 1 (Eingcgaiigcn a111 10. 1)c~zc~mhcr 1948.)-Tripl~en~l-tc~tlnzoli~niichlorid ('WC) wandolt sich b t 4 r1t.r IJestrajilung mit UVlicht in allrolioliscl~c-r Imung nahrzu quantjiativ in das hltlu rluorrsciorcllde. sc*Iiiin Iirystallisit~n~ntlo :!.3-I~ipIi~~r1~1~1i-3 -phenyl-tc~tr.rzolium chlorid itin. Die l;ic.hteiiipfindlichlreit von 3.3.,5-'rl.ipherlyl-t etlazo… Show more

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Cited by 55 publications
(26 citation statements)
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“…The integral ratios clearly give evidence of the presence of a deprotonated ligand moiety and one dimethyl fragment MMe 2 (M = Al, Ga, In). The NMR spectra of 2 and 3 show signal patterns that match the expected spectra for C 2 -or C s -symmetric compounds: one signal for both MMe 2 groups (M = Al, Ga) as well as the magnetic equivalence of the two peripheral N-phenyl rings lead to the assumption that 2 and 3 exist as six-membered MN 4 14,23 that exposing formazan solutions to light (λ < 480 nm) leads to a colour change from red to yellow along with a shift of the absorption maximum from about 490 to 400 nm. This colour change is due to the photoinduced isomerization of one of the double bonds within the ligand backbone.…”
Section: Resultsmentioning
confidence: 98%
“…The integral ratios clearly give evidence of the presence of a deprotonated ligand moiety and one dimethyl fragment MMe 2 (M = Al, Ga, In). The NMR spectra of 2 and 3 show signal patterns that match the expected spectra for C 2 -or C s -symmetric compounds: one signal for both MMe 2 groups (M = Al, Ga) as well as the magnetic equivalence of the two peripheral N-phenyl rings lead to the assumption that 2 and 3 exist as six-membered MN 4 14,23 that exposing formazan solutions to light (λ < 480 nm) leads to a colour change from red to yellow along with a shift of the absorption maximum from about 490 to 400 nm. This colour change is due to the photoinduced isomerization of one of the double bonds within the ligand backbone.…”
Section: Resultsmentioning
confidence: 98%
“…In pure water, both TPF and PTC are found as final products, whereas in alcohols only the latter is formed. [6] Our results show that TTCC formation is slower in water compared to alcohols. Therefore, the different product distribution might originate from a competition between cyclization of ro-TTCC and protonation of ro-TTCC eventually leading to TPF.…”
mentioning
confidence: 82%
“…versus S.C.E. and it was found to be due to another photochemical reaction product of TTC, namely the 2, 3, diphenylene-5-phenyl tetrazolium compound (blue fluorescent in ultra-violet light) described by Hausser, Jerchel and Kuhn (1949a) and by Kuhn and Jerchel (1952). The extent of formation of this compound appears to be uninfluenced by the presence of serum but serum suppressed the maximum which occurs on its polarographic wave in protein-free solutions.…”
mentioning
confidence: 97%
“…The dropping mercury electrode had the following characteristics: at 20T, in 0. Kuhn, 1949a). It was decided to examine the effect'of normal and tumour rat sera on this photochemical process.…”
mentioning
confidence: 99%
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