## Abstract Interactions of several acridine dyes with DNA from different species were studied by measuring fluorescence lifetimes in the 2β30βnsec range, using the singleβphoton counting technique, and by measuring fluorescence quantum yields in the steady state. The results confirm the existence
Quantum yields and lifetimes of molecular ion fluorescence
β Scribed by J.H.D. Eland; M. Devoret; S. Leach
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 443 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
A new method has been devctopcd to dctcct molecular ion emissions and to mcawre their quantum yicIds and lif'ctimcs. Unit quantum yields arc found for N:(B), N,O*(& C,I$(& and C,F,H*@:). Yields smaIlcr than unity are found for COf(&, CS',(%, COS*(x) and I : 2:4 C,F,li@), and greater than unity for CO;(z). Preliminary results on the cmIs!iionJ of CiCN*, BrCN', and ICN*, discovcrcd in the course of the work, arc prcsentcd.
π SIMILAR VOLUMES
Quamum yields. hfcnmes and shapes of fluorescence from polymers conkumn~ the rrans-1,2dicarbuolylcyclobutsne(DCZB) OI carbazolyl structures were studlcd in N,Ndtmerhylform~idc. No sandwlch-type elctmcr formation was observed for DCZB polymers The so-called second excrmcr observed III poly(9-vinylcxb
Fluorescence intensities and lifetimes of 1, I '-diethyl-2,2'-cyanine chloride( pseudoisocyanine) at I .O x 1 O-\* M in glycerol have been measured in the temperature range 84-298 K. Comparison with previous results shows that the solution consists of dye monomers. Arrhenius plots yield two activat
Measurements of the fluoresosnce lifetime of solid benzene (= 83.7 nscat -100Β°C) indic7ate that the limiting low temperature quantum yield of fluorescence is 0.22. This yi& is virtually identiui with that observed irr dUute low-temperature dispersions of benzene in EPA and hexanc. It therefore appea