Singh, Anil K.; Manjula, D. published the artcile< A fluorescence study of 1-p-aminophenyl-4-phenylbuta-1E,3E-diene in organic solvents, 1,4-dioxane-water binary mixtures and micelles>, Formula: C19H34O2, the main research area is fluorescence aminophenylphenylbutadiene organic solvent; solvent effect fluorescence aminophenylphenylbutadiene; dioxane water binary mixture fluorescence aminophenylphenylbutadiene; micelle fluorescence aminophenylphenylbutadiene.
1-P-Aminophenyl-4-phenylbuta-1E,3E-diene (1) was synthesized and its UV-visible absorption and fluorescence emission and excitation spectral properties in a variety of media including organic solvents and 1,4-dioxane-water binary mixtures of varying relative permittivity, and microheterogeneous media of SDS, CTAB and Triton-X-100 micelles were examined In contrast to a largely solvent polarity insensitive nature of the UV-visible absorption and fluorescence excitation spectra, the fluorescence emission maximum (λf max) and the fluorescence quantum yield (Φf) of 1 are significantly influenced by polarity of the medium. The aminodiene 1 in nonpolar n-heptane shows λf max at 422 nm, but in relatively more polar solvents it shows two bands at 426-438 and 467-492 nm, depending on the relative permittivity of the medium. In general, as the polarity of medium is increased, the λf max of 1 undergoes gradual red shift with decreased fluorescence intensity at the shorter wavelength fluorescence band and enhanced fluorescence intensity at the longer wavelength fluorescence band. Further, as the polarity of the medium is increased, the Φf decreases. The solvatochromic fluorescence of 1 also was discussed in terms of the solvent polarity parameter, Δf. In the micellar medium also, 1 exhibits two fluorescence bands, which appear more prominently in SDS micelles as compared to in CTAB or in Triton-X-100 micelles. The positions of the fluorescence bands are dependent on the electronic charges of the micelles. Micropolarity of the solubilization site of 1 in various micelles also was discussed and probably 1 is intercalated in the interfacial domains of the micelles. In general, 1 fluoresces more efficiently in neutral micelles of Triton-X-100 than in ionic micelles of SDS or CTAB. The fluorescence properties of 1 were discussed in terms of the involvement of apolar, initially prepared locally excited state (in nonpolar medium) and dipolar, intramol. charge transfer excited state (in polar medium) along with the possible influence of the solvent polarity induced energy level reordering of the lowest singlet excited states of the aminodiene. This study has brought out interesting features of the excited state structure and dynamics of donor-acceptor diphenylpolyenes and showed the importance of charge transfer excited states in the photoprocesses of linear polyenes in general. Addnl., it provides new directions for designing fluorescence probes as sensors and reporters of the microenvironment of organized assemblies.
Journal of the Indian Chemical Society published new progress about Alkadienes Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), SPN (Synthetic Preparation), PROC (Process), PREP (Preparation). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Formula: C19H34O2.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics