On titration with CT-DNA, complex 1 exhibits slight hypochromic and narrow bathochromic effects; whereas, complex 2 displays significant hypochromic and large bathochromic effects; moreover, complex 3 shows slight hyperchromic and narrow hypsochromic
When diluted in distilled water (pH = 3.8) or in methanol (pH = 12), maximum absorption peaks can be observed in three bands: 243~243.5nm, 280~282nm, and 324~331nm, respectively, with a slight bathochromic shift, but with a strong hypsochromic
shift at a wavelength from 383.6 nm to 302.5 nm.
The absorption spectra of all three sensitizers on the Ti[O.sub.2] films exhibited significantly hypsochromic
shift and a broader full width at half maximum (fwhm) than absorption spectra measured in CH[Cl.sub.3] due to strong interactions between the dyes and Ti[O.sub.2] surfaces.
Herein, a slight hypsochromic
shift was observed in the inclusion process of CB7/luteolin and CB7/EGCG.
However, compound 4 in the presence of nitrogen for 60 seconds exhibited an increase in the emission, which may be a consequence of oxidation of the compound, and due to absorption spectra, the compound shows a hypsochromic
As the temperature was increased from 40[degrees]C to 80[degrees]C, a blue shift (hypsochromic
shift) occurs due to reduction in the size of particles from large size to small size.
shifts in the [v.sub.asy](COO) frequency and bathochromic shifts for the [v.sub.sy](COO) frequency for compounds 3 and 4 indicated the monodenticity of the carboxylate ion on coordination.
The addition of HP-betaCD led to a hypsochromic
shift of 2 nm (from 284 nm to 286 nm) and a bathochromic effect (k band decrease in intensity).
The hypochromic shift (lower absorbance) at 430nm and appearance of new peak at 308nm (hypsochromic
shift) indicated reduction.
However, intradigand bands were observed with hypsochromic
shift for n[right arrow][[pi].sup.*] transition and bathcromic shift for n[right arrow][[pi].sup.*] transitions.
The fluorescence intensities of HSA at 349 nm decreased regularly with the increase of Hyp concentration and the maximum hypsochromic
shift was 5 nm ([[lambda].sub.max] from 349 to 344 nm) at 310 K, suggesting that the complex of Hyp-HSA was formed, which is responsible for the quenching of HSA fluorescence.
shift of the SPR signals was recorded owing to the influence of the increasing concentration of dendrimers in the reaction medium; this is assigned to diminished particles size of the formed nanoparticles.