61096-84-2Relevant academic research and scientific papers
Optical and electrochemical effects of triarylamine inclusion to alkoxy BODIPY-based derivatives
Insuasty, Alberto,Madrid-Usuga, Duvalier,Mora-León, Ana G.,Ortiz, Alejandro,Rocha-Ortiz, Juan S.
, p. 18114 - 18123 (2021/10/12)
Three new triphenylamine-BODIPY dyadsBDPT1-3have been designed and synthesized. Their optoelectronic properties were investigated, which revealed strong electronic interactions between the donor and acceptor moieties, together with high sensitivity to the inclusion of alkoxy groups. The properties of the dyads were compared with those of reference compoundsAandBDP1, which exhibit broader absorption in the visible region as a result of the inclusion of donor groups and extended conjugation of the BODIPY core. Fluorescence quenching was also observed, which was attributed to the photoinduced electron transfer, evidenced from solvatochromic measurements, quantum yields and theoretical calculations. The oxidation potentials of new compounds were found to be lower when compared with those of other BODIPY analogues with donor groups attached. The redox, computational, absorbance and emission data suggest that compoundsBDPT1-3exhibit promising properties for their application in organic photovoltaic or light emitting (optoelectronic) devices.
Evaluating the intramolecular charge transfer in novel meso-alkoxyphenyl and β-ethynylphenolic BODIPY derivatives
Rocha-Ortiz, Juan S.,Insuasty, Alberto,Insuasty, Braulio,Ortiz, Alejandro
, (2020/01/28)
Two new BODIPY derivatives (BDP1 and BDP3) were synthetized and characterized using photophysical, electrochemical and theoretical methods. Twisted intramolecular charge transfer (TICT) and intramolecular charge transfer (ICT) phenomena were evidenced from solvatochromism effects in THF/toluene mixtures and supported by theoretical DFT calculations. The different results suggest that TICT and ICT processes are directly related to the meso-alkoxyphenyl and β-ethynylphenolic substitutions linked to the BODIPY core. The functionalization with the β-ethynylphenolic group favors the ICT process due to its coplanarity with the BODIPY moiety, while the functionalization with an alkoxy-phenyl unit, which lacks this coplanarity, exhibited a TICT process instead. The higher electronic conjugation of BDP3 in comparison to BDP1, leads to more pronounced cathodic and anodic shifts. Phenolic moiety has a strong contribution in HOMO orbitals, while LUMO orbital has a contribution for the BODIPY core.
Acid-alkaline degradation of the anionic surface active agent and its application
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Paragraph 0031-0032, (2019/05/15)
The present invention discloses a structural formula (I) Compound and its use in the polymerization of the emulsion. And discloses the preparation process, using the compound prepared by the acid-base under the conditions of the rapid decomposition of the
Synthesis and liquid crystalline properties of a new homologous series of 4,5-disubstituted 2H-[1,2,3]-triazoles via azide-chalcone oxidative cycloaddition reaction
Sowmya,Rai, K. M. Lokanatha
, p. 764 - 768 (2017/07/07)
A new homologous series of 4,5-disubstituted 2H-[1,2,3]-triazole derivatives were synthesized from chalcones and sodium azide via oxidative cycloaddition reaction; CuI was used as catalyst. Flexibility in the synthesized molecules was provided by attaching straight alkoxy chains. The synthesized compounds were characterized by elemental analysis, and 1HNMRand 13CNMRand LC-MS spectroscopies . The stability and range of the mesophases increased with the length of the chain on the triazoles. The melting point, transition temperatures, and enantiotropic liquid crystal morphologies were determined by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM) equipped with a hot stage. Journal compilation
Synthesis and characterization of new homologous series of unsymmetrical liquid crystalline compounds based on chalcones and 3, 5-disubstituted isoxazoles
Sowmya,Lokanatha Rai
, p. 67 - 73 (2017/01/24)
Two homologous series of unsymmetrical alkylated chalcones and 3,5-diaryl isoxazoles, consisting of 20 members, with various n-alkyl bromides (n=2?7, 10, 12, 14, 16) have been synthesized and studied for their liquid crystalline property. Simple strategy was employed to achieve the target materials. Flexibility in the synthesized molecules is provided by attaching straight alkoxy chains, where one terminal group is fixed and other terminal group is varied. The synthesized compounds were characterized on the basis of Mass, IR and NMR spectroscopy. The stability and the range of the mesophases increased with the length of the chain on the isoxazoles. The melting point, transition temperatures and enantiotropic liquid crystal morphologies were determined by polarizing optical microscopy (POM) in conjunction with a hot stage and by differential scanning calorimetry (DSC). [Figure not available: see fulltext.]
Novel 2-(substituted benzyl)quinuclidines inhibit human α7 and α4β2 nicotinic receptors by different mechanisms
Arias, Hugo R.,López, Jhon J.,Feuerbach, Dominik,Fierro, Angélica,Ortells, Marcelo O.,Pérez, Edwin G.
, p. 2420 - 2430 (2013/10/01)
This work presents the design and synthesis of a series of novel 2-benzylquinuclidine derivatives, comprising 12 methiodide and 11 hydrochloride salts, and their structural and pharmacological characterization at the human (h) α7 and α4β2 nicotinic receptors (nAChRs). The antagonistic potency of these compounds was tested by Ca2+ influx assays on cells expressing the hα7 or hα4β2 nAChR subtype. To determine the inhibitory mechanisms, additional radioligand binding experiments were performed. The results indicate that the methiodides present the highest affinities for the hα7 nAChR agonist sites, while the same compounds bind preferably to the hα4β2 nAChR ion channel domain. These results indicate that the methiodides are competitive antagonists of the hα7 nAChR but noncompetitive antagonists of the hα4β2 subtype. Docking and molecular dynamics simulations showed that the methiodide derivative 8d binds to the hα7 orthosteric binding sites by forming stable cation-π interactions between the quaternized quinulinuim moiety and the aromatic box in the receptor, whereas compounds 7j and 8j block the hα4β2 AChR ion channel by interacting with a luminal domain formed between the serine (position 6′) and valine (position 13′) rings that overlaps the imipramine binding site.
Synthesis and characterization of new mesogenic 4-(n-Alkoxy)-3-methoxy- benzaldehyde semicarbazones
Rajasekhar Prasad,Nagappa,Lokanatha Rai
, p. 4605 - 4610 (2007/10/03)
Synthesis of a homologous series of mesogenic 4-(n-alkoxy)-3-methoxy benzaldehyde semicarbazones starting from vanillin via alkylation with n- alkyl bromide under phase transfer condition is described.
