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Search for "bathochromic shift" in Full Text gives 111 result(s) in Beilstein Journal of Organic Chemistry.
Supramolecular FRET photocyclodimerization of anthracenecarboxylate with naphthalene-capped γ-cyclodextrin
Beilstein J. Org. Chem. 2011, 7, 290–297, doi:10.3762/bjoc.7.38
- addition of 7 to an aqueous solution of AC (0.2 mM) caused an evident bathochromic shift of the 1La band of AC, which is probably due to the stacking complexation of two AC molecules in a single γ-CD cavity. Modified γ-CDs 6 and 7 showed moderate circular dichroism signals in the naphthalene-absorbing
Syntheses and properties of thienyl-substituted dithienophenazines
Beilstein J. Org. Chem. 2010, 6, 1180–1187, doi:10.3762/bjoc.6.135
- coupling products with thiophene boronic acids. In both cases the thiophene units of the molecules act as electron rich parts (donors, D), whereas the phenazine moieties serve as electron deficient parts (acceptors, A), leading to a bathochromic shift of the UV–vis spectra in comparison with the non
Donor-acceptor substituted phenylethynyltriphenylenes – excited state intramolecular charge transfer, solvatochromic absorption and fluorescence emission
Beilstein J. Org. Chem. 2010, 6, 992–1001, doi:10.3762/bjoc.6.112
- interactions. Quantum yield of fluorescence From Figure 3 and Figure 4 it is clear that with increasing solvent polarity, the intensity of emission decreases along with the bathochromic shift of the wavelength of emission. The fluorescence intensity of molecular systems that undergo efficient ICT upon
Chromo- and fluorophoric water-soluble polymers and silica particles by nucleophilic substitution reaction of poly(vinyl amine)
Beilstein J. Org. Chem. 2010, 6, No. 79, doi:10.3762/bjoc.6.79
- both compounds, the shortest UV–vis absorption maxima were observed at λmax(1-M) = 568 nm and λmax(1-P) = 513 nm in HFIP. 1-M shows the longest wavelength UV–vis absorption band at λmax = 580 nm in DMSO, whereas 1-P has the strongest bathochromic shift in ethanol at λmax = 538 nm. These band shifts
- coefficients r are greater than 0.92 for LSERs, which indicates a high quality of the two multi-parameter equations and allows significant conclusions to be drawn. When increasing the HBA strength of the solvent, a bathochromic shift of the UV–vis absorption maxima of 1-M is observed, which is readily
- . In contrast to the results of the regression analysis obtained from the UV–vis absorption spectra, the HBD ability of the solvents shows a significant influence on the emission maxima of 1-P. With increasing HBD strength of the solvent a bathochromic shift of the emission maximum was observed
RAFT polymers for protein recognition
Beilstein J. Org. Chem. 2010, 6, No. 66, doi:10.3762/bjoc.6.66
- characteristic second derivative spectra, similar to those observed in the titrations of microgels into protein solutions [16]. Isosbestic points are clearly visible along with a bathochromic shift of the absorbance peak (Figure 2a). A dissociation constant of 1.6 × 103 M−1 could be fitted to the binding
A perfluorocyclopentene based diarylethene bearing two terpyridine moieties – synthesis, photochemical properties and influence of transition metal ions
Beilstein J. Org. Chem. 2010, 6, No. 53, doi:10.3762/bjoc.6.53
- ), Co(II), Ni(II) and Zn(II). The UV–vis-spectra of the iron(II) complex [Fe2+@10a], obtained by reaction of 10a with ferric chloride tetrahydrate, are shown in Figure 4. Apart from the expected bathochromic shift of the UV-bands of the ligand [18], an MLCT band at λ = 570 nm was observed. While the UV
Preparation of pyridine-3,4-diols, their crystal packing and their use as precursors for palladium-catalyzed cross-coupling reactions
Beilstein J. Org. Chem. 2010, 6, No. 42, doi:10.3762/bjoc.6.42
- phenyl substituent at C-2 of pyridine 4c, the π-system is slightly more extended and obviously influences the absorption and emission maxima with a bathochromic shift of 10 nm. Conclusion In conclusion, we have successfully demonstrated that 3-alkoxypyridines are ideal precursors for the synthesis of
Molecular recognition of organic ammonium ions in solution using synthetic receptors
Beilstein J. Org. Chem. 2010, 6, No. 32, doi:10.3762/bjoc.6.32
Synthetic incorporation of Nile Blue into DNA using 2′-deoxyriboside substitutes: Representative comparison of (R)- and (S)-aminopropanediol as an acyclic linker
Beilstein J. Org. Chem. 2010, 6, No. 13, doi:10.3762/bjoc.6.13
- and the corresponding modified oligonucleotides in the visible range are the loss of one absorption band and a red-shift from 633 nm to 653 nm for the second absorption signal. A further small bathochromic shift of ca. 5 nm is observed upon hybridization of the modified single strands DNA1 and DNA2 to
An enantiomerically pure siderophore type ligand for the diastereoselective 1 : 1 complexation of lanthanide(III) ions
Beilstein J. Org. Chem. 2009, 5, No. 78, doi:10.3762/bjoc.5.78
- wavelengths exhibit a positive Cotton effect. As the calculated maximum of the UV spectrum (530 nm) shows a bathochromic shift relative to the measured UV spectrum (470 nm), the corresponding peak in the calculated CD spectrum (540 nm) is shifted to higher wavelengths relative to the experimentally measured
New diarylmethanofullerene derivatives and their properties for organic thin- film solar cells
Beilstein J. Org. Chem. 2009, 5, No. 7, doi:10.3762/bjoc.5.7
- decrease of that at 140 °C. The P3HT:1a-based cell showed a maximum at around 550 nm, whereas the P3HT:PCBM annealed at 100 and 130 °C exhibited the maxima at around 505 nm as shown in Figure 4(B). Since these responsivities are definitely derived from the absorption of P3HT, this notable bathochromic
- shift in the responsivity maxima of P3HT:1a in comparison with P3HT:PCBM can be ascribed to the change in the alignment of the P3HT polymer chain induced by the long octyloxy chains of 1a. A change of the annealing temperature may also be related to the growth of the domain size of derivative 1a, as
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