Enantioselective resolution of racemic flurbiprofen methyl ester by lipase encapsulated mercapto calix[4]arenes capped Fe3O4 nanoparticles
Sign Up to like & getrecommendations! Published in 2017 at "Bioprocess and Biosystems Engineering"
DOI: 10.1007/s00449-017-1779-x
Abstract: This work presents the synthesis of new mercapto calix[4]arenes derivatives (4 and 5). These derivatives were capped on Fe3O4 magnetic nanoparticles and subsequently encapsulated with Candida rugosa through sol–gel method to furnish enc-4 and enc-5,… read more here.
Keywords: calix arenes; racemic flurbiprofen; flurbiprofen; lipase ... See more keywords
Substrate-induced luminescence response of terbium-containing polymeric vesicles doped with the tetra- and bis-1,3-diketone derivatives of calix[4]arenes bearing nonyl substituents at the lower rims
Sign Up to like & getrecommendations! Published in 2019 at "Russian Chemical Bulletin"
DOI: 10.1007/s11172-019-2398-2
Abstract: Polymeric aggregates (~100 nm) based on polydiacetylenic acid doped with the luminescent TbIII complexes with the tetra- and bis-1,3-diketonate derivatives of calix[4]arenes with nonyl substituents at the lower rims are considered as potential nanosensors. The… read more here.
Keywords: derivatives calix; calix arenes; tetra bis; lower rims ... See more keywords
Self-aggregation in aqueous solution of amphiphilic cationic calix[4]arenes. Potential use as vectors and nanocarriers
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Molecular Liquids"
DOI: 10.1016/j.molliq.2020.112724
Abstract: Abstract The self-aggregation of four amphiphilic cationic calix[4]arenes, CALIX, in aqueous solutions was investigated in this work. The nature of the polar group present at the upper rim as well as the length of the… read more here.
Keywords: calix arenes; amphiphilic cationic; self aggregation; calix ... See more keywords
Experimental and DFT evaluation of the 1 H and 13 C NMR chemical shifts for calix[4]arenes
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Molecular Structure"
DOI: 10.1016/j.molstruc.2017.12.038
Abstract: Abstract The density functional theory is employed to determine the efficiency of 11 exchange-correlation (XC) functionals to compute the 1 H and 13 C NMR chemical shifts of p -tert-butylcalix[4]arene (ptcx4, R 1 = C(CH 3… read more here.
Keywords: chemical shifts; nmr chemical; calix arene; calix arenes ... See more keywords
Inter and intra-phase conformerism in two calix [4]arenes
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Molecular Structure"
DOI: 10.1016/j.molstruc.2019.07.096
Abstract: Abstract Calix [4]arenes are macrocyclic compounds which can assume four main conformations (cone, partial cone, 1,2-alternate, and 1,3-alternate) driving their desired host-guest ability. Here we report a new polymorph of 25,26,27,28-tetrakis(methoxycarbonylmethoxy)calix [4]arene, which is present… read more here.
Keywords: conformerism; calix arenes; cone; calix ... See more keywords
Synthesis and study of calix[4]arenes bearing azo moieties at the meta position
Sign Up to like & getrecommendations! Published in 2017 at "Tetrahedron"
DOI: 10.1016/j.tet.2017.01.025
Abstract: Abstract Direct mercuration and subsequent transformation of organomercurial intermediates into the corresponding nitroso derivatives enabled the construction of calix[4]arenes bearing azo moieties at the meta position (to the alkoxy groups). These compounds, representing a unique… read more here.
Keywords: meta position; calix arenes; bearing azo; arenes bearing ... See more keywords
Influence of upper rim dibromo-substitution in bis-1,3-diketone calix[4]arenes on spectral properties of ligands and their lanthanide complexes
Sign Up to like & getrecommendations! Published in 2017 at "Tetrahedron"
DOI: 10.1016/j.tet.2017.07.043
Abstract: Abstract The present work introduces the synthesis and characterization of upper rim dibromo-substituted bis-1,3-diketone calix[4]arenes with hydroxy and propyloxy groups at the lower rim as ligands for Gd3+ and Tb3+ complexes. The dibromo-substitution does not… read more here.
Keywords: calix arenes; rim dibromo; dibromo; calix ... See more keywords
Formation of calix[4]arenes with acyloxycarboxylate functions
Sign Up to like & getrecommendations! Published in 2020 at "Tetrahedron"
DOI: 10.1016/j.tet.2020.131395
Abstract: Abstract Calix[4]arenes are an exciting class of multifunctional compounds. Their ability to bind small molecules and ions actively makes them useful tools for many applications. While looking for a suitable chelating agent, a particular modification… read more here.
Keywords: formation calix; calix arenes; acyloxycarboxylate functions; calix ... See more keywords
Mercuration of calix[4]arenes immobilized in the 1,2- and 1,3-alternate conformations
Sign Up to like & getrecommendations! Published in 2017 at "Tetrahedron Letters"
DOI: 10.1016/j.tetlet.2017.03.085
Abstract: Abstract Calix[4]arenes immobilized in the 1,2-alternate and 1,3-alternate conformations were directly mercurated using Hg(TFA)2. The reaction regioselectivity was compared with the thermodynamic stability of the corresponding products obtained by theoretical calculations (wB97XD/def2tzvp method). Both experimental… read more here.
Keywords: calix arenes; arenes immobilized; immobilized alternate; alternate conformations ... See more keywords
Capturing the Recognition Dynamics of para-Sulfonato-calix[4]arenes by Cytochrome c: Toward a Quantitative Free Energy Assessment
Sign Up to like & getrecommendations! Published in 2022 at "Journal of chemical information and modeling"
DOI: 10.1021/acs.jcim.2c00483
Abstract: Calix[n]arenes' selective recognition of protein surfaces covers a broad range of timely applications, from controlling protein assembly and crystallization to trapping partially disordered proteins. Here, the interaction of para-sulfonated calix-[4]-arenes with cytochrome c is investigated… read more here.
Keywords: recognition; free energy; arenes cytochrome; calix arenes ... See more keywords
Paramagnetic Relaxation Enhancement in Hydrophilic Colloids Based on Gd(III) Complexes with Tetrathia- and Calix[4]arenes
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Physical Chemistry C"
DOI: 10.1021/acs.jpcc.0c00312
Abstract: Hydrophilic colloids (PSS-[Ln2(TCAi)2] and PSS-[LnCAi], where i = 1, 2, or 3 and Ln = Gd or Tb) were prepared by precipitation of Gd(III) or Tb(III) complexes with tetrathiacalix[4]arenes (TCAi) and calix[4]arenes bearing two 1,3-diketone… read more here.
Keywords: hydrophilic colloids; iii; calix arenes; pss ... See more keywords