Absorption Spectra of Dyes. I. Aggregation and Absorption Spectra of Benzidine Disazo Dyes.
نویسندگان
چکیده
منابع مشابه
Cyanine Dyes: Fine Structures in Their Absorption Spectra
Absorption spectra were studied for two series of 3 cyanine dyes with varying length of conjugated hydrocarbon chains. Fine sturctures in absortpiton spectra were analyzed to determine its concentraion dependence as the concentraion of dyes were changed from 10 –8 M to 10 –4 M. In all 6 dyes studied, ratios of minor peaks to the major peak remained constant within the experiemntal error. These ...
متن کاملBenzidine and Dyes Metabolized to Benzidine
CARCINOGENICITY Benzidine................................................................................................3 Properties..................................................................................................................................4 Use ...................................................................................................................................
متن کاملTurbulence measurements from H I absorption spectra
We use the millennium Arecibo 21 cm absorption-line survey measurements to examine the issue of the non-thermal contribution to the observed Galactic H I line widths. If we assume a simple, constant pressure model for the H I in the Galaxy, we find that the non-thermal contribution to the line width, vnt scales as v nt ∝ l , for vnt larger than ∼ 0.7 km s. Here l is a derived length scale and α...
متن کاملSYNTHESIS AND ELECTRONIC ABSORPTION SPECTRA OF SOME METHOXY HALF-ANALOGUE OF MICHLER'S HYDROL BLUE
The present work comprises the synthesis of one series of diarylmethane dyes containing one or more terminal methoxy substituents together with a variable tertiary amino group. The electronic absorption spectra of the dyes have been determined. As the conjugation of the terminal nitrogen atom improves in the sequence NMez > Kairoline > Julolidine, a progressive hypsochromic shift is observed
متن کاملPicosecond Transient Absorption of Xanthene Dyes*
After oneand two-colour ps-excitation the transient absorption of rose bengal, erythrosin B and eosin Y in the spectral range from 450 to 670 nm was probed using picosecond continuum pulses generated in H2O—D 2 O mixture. Our experiments showed for all dyes a high T1—Tn absorption signal above 590 nm where no ground state absorption occurs. These excited triplet states can be effectively popula...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1957
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.78.343