Add time:07/20/2019 Source:sciencedirect.com
The paper presents the results of spectroscopic studies of 4-([1,2,4]triazolo[4,3-a]pyridin-3-yl)-6-methylbenzene-1,3-diol (TPBD), which indicate that the molecular organization of the compound is altered in different solvents and at different concentrations. The results were obtained from two solvents: methanol and propan-2-ol. Methanol represents a group of solvents in which monomers are the predominant molecular form of TPBD. Propan-2-ol belongs to a group of solvents in which TPBD additionally forms aggregates (dimers or N-aggregates). At concentration C0 = 0.05 × 10−3 M, TPBD has a monomeric form in Mt-OH and an additional dimeric form in Pr-OH. Circular dichroism (CD) and resonance light scattering (RLS) spectra revealed predominance of aggregated TPBD forms already at low concentrations of the compound in the methanol solvent. In turn, monomeric and dimeric forms of the compound dominated at low concentrations in propan-2-ol. Formation of additional dimers or N-aggregates in propan-2-ol was observed only at high concentrations of the compound (C10 = 1.36 × 10−3 M-C20 = 4.90 × 10−3 M). The presence of monomers and dimers in the Pr-OH solution yielded two bands (at 408 and 502 nm, respectively) in the fluorescence emission spectrum. Additionally, it was found that dimeric molecular form was characterized by reduction of the amplitude-weighted average fluorescence lifetimes in comparison with the monomeric form.
We also recommend Trading Suppliers and Manufacturers of 2-(Pyridin-3-yl)propan-2-ol (cas 15031-77-3). Pls Click Website Link as below: cas 15031-77-3 suppliers
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View