Rhodamine 6G is a rhodamine 6G(1+), an organic chloride salt and a xanthene dye. It has a role as a fluorochrome. General Description Bright bluish-pink crystals or reddish purple powder. Air & Water Reactions Insoluble in water.
Based on the relationship between J-and H-bands in the absorption spectrum of Rhodamine 6G dimers, both the angle between planes of associated Rhodamine 6G dye molecules and the free enthalpy of association were calculated. The structure of Rhodamine 6G dimers depends essentially on the ethanol ...
spectrum, the total CCD exposure time to obtain the same signal/noise ratio for the rhodamine 6G solution would be only 1.3ms. In practice, of course, the signal/noise ratio of the rhodamine 6G spectrum is much higher than that of the carotenoid even with the shortest practical CCD exposure...
ganglia cells has been done successfully which proves the probe could be further applied for biological applications. An another rhodamine based probe was developed byAlam et al.[6]for specific CHEF based enhancement in absorption and emission for detection of trivalent metal ions such as Al, Fe ...
Complexation has been strongly implicated by the results from the preceding sections, but nitrogen free electron pairs on the dye can complex directly to a surface metal or involve hydrogen bonding via hydroxyl or water bridging.In-situATR-FTIR spectrum collected during the adsorption process was use...
This complete absence of any absorption or emission band in the visible region of the spectrum accounts for the colourless nature in the aqueous solution, hence, strongly confirming that probe4is solely in the spirolactam form at neutral condition. This was further confirmed by the13C NMR spectr...
emissionspectrum0f1一Caz complexandabsorptionspectrumoftherhodaminedyesoverlaplargely .When Al”wasaddedtothe1-Ca2system ,calciumincomplex1-Ca2canbedisplacedbvAl .resultingintheoutputof anotherratiometricsensingsignal,whichdemonstratesthatthe1-Caz complexcanbeservedasanewandeffective ...
Because of high absorption coefficient and broad fluorescence in the visible region of the electromagnetic spectrum, rhodamine dyes are widely used as fluorescent probes also for optical measurements of pH [13]. Above properties make rhodamine B more attractive, hence used in a variety of ...
In polar solvents, the colourless RBL form is transformed into the violet coloured zwitterion (RB+−). To the carboxyl group formed by the opening of the lactone ring of RBL, a proton can be added, forming RBH+ that has nearly the same absorption spectrum as RB+−. Anions such as ...
While rhodamine derivatives in cationic and zwitterionic forms are highly fluorescent molecules, the lactone form is essentially non-fluorescent due to the interruption of I-conjugation of the chromophore of the zwitterionic form. Consequently, absorption of lactones of rhodamine occurs in the UV ...