Results 21 to 30 of about 9,599 (215)

Calixarene-based langmuir monolayers : from crystallization templates to metal organic networks [PDF]

open access: yes, 2015
Molecular self-assembly plays a pivotal role in biological processes and living organisms can be considered as the result of the self-assembly of discrete molecular building blocks into sophisticated functional structures.
Tulli, Ludovico G.
core   +1 more source

Allosteric Regulation of Photophysics and Binding in Oxazine‐macrocycle Complexes at Single‐molecule Resolution

open access: yesAngewandte Chemie, EarlyView.
This work explores the interactions between the oxazine dye ATTO655 and two macrocyclic hosts using optical (single‑molecule) spectroscopy. Although ATTO655 forms a classical inclusion complex with cucurbit[8]uril (CB8), its interaction with p‑sulfonatocalix[4]arene (sCX4) leads to the formation of dim exclusion complexes.
Siyu Lu   +7 more
wiley   +2 more sources

Study of IR spectra of thiacalix[4]arene with carboxyl and adamantyl groups [PDF]

open access: yesE3S Web of Conferences, 2021
The IR spectra of p-(3-carboxy-1-adamantyl)thiacalix[4]arene (1) were studied. IR spectra of compound 1 do not contain bands of free hydroxyl groups. The νOH value at 3377 cm-1 signifies the formation of an intramolecular H-bond along the lower edge of ...
Furer Victor   +4 more
doaj   +1 more source

Calixarenes and Their Biomimetic Applications [PDF]

open access: yesBioinorganic Chemistry and Applications, 2004
The synthetic models for the structures, spectroscopic properties and catalytic activities of metalloprotein active sites have been reviewed. Calixarenes were used as new biomimetic catalysts because of their advantage of providing preorganiiation of the catalytic group, which can bind the substrate dynamically that results in fast turnover and fast ...
Agrawal, Y. K., Bhatt, Harshit
openaire   +2 more sources

Cyclo‐Polyproline: Chameleonic All‐Peptide Macrocycles With Induced‐Fit Host‐Guest Recognition

open access: yesAngewandte Chemie, EarlyView.
Macrocycles served as the genesis of supramolecular chemistry, advancing synthetic, separation, and materials fields. Despite their utility, they typically lack synthetic control. This work establishes a robust platform for all‐peptide macrocycles capable of host‐guest complexation and chameleonic behavior.
Camilla Di Girolamo   +9 more
wiley   +2 more sources

Aggregation, Cytotoxicity and DNA Binding in a Series of Calix[4]arene Amphiphile Containing Aminotriazole Groups

open access: yesPharmaceuticals, 2023
The present work focuses on the study of the aggregation and complexing properties of calixarenes as potential DNA condensation agents for gene delivery.
Diana Mironova   +11 more
doaj   +1 more source

Chiral Phosphinoferrocenyl‐Calixarenes [PDF]

open access: yesEuropean Journal of Organic Chemistry, 2016
The Mitsunobu alkylation of 4‐tert‐butylcalix[4]arene with (S)‐(2‐diphenylthiophosphinoferrocenyl)methanol followed by desulfuration of the thiophosphine unit using tris(dimethylamino)phosphine afforded enantiomerically pure calixarene mono‐ and di(ferrocenylphosphine) ligands in high yields.
Karpus, Andrii   +7 more
openaire   +2 more sources

Synthesis and the biological activity of bis-mefenamidocalixarene

open access: yesЖурнал органічної та фармацевтичної хімії, 2019
Aim. To develop the method for the synthesis of the conjugate of diaminocalix[4]arene with 2-(2,3-dimethylphenyl)aminobenzoic acid (mefenamic acid) – bis-mefenamidocalixarene, determine its structure and physicochemical properties and assess its anti ...
Nataliya M. Chalenko   +2 more
doaj   +1 more source

Reactivity of carbonyl and phosphoryl groups at calixarenes [PDF]

open access: yes, 2013
Examples of reactivity of carbonyl and phosphoryl compounds controlled by calixarenes are illustrated in this review article. The molecular framework of calixarenes has been widely used as a versatile molecular platform for the dynamic arrangement of one
Cacciapaglia R.   +3 more
core   +2 more sources

Crystal structure of tetraethyl 27,30-dioxo-7,12,20,25-tetra-tert-butyl-3,16-dioxa-9,22,28,31-tetrathiaheptacyclo[21.3.1.11,5.14,8.110,14.114,18.117,21]dotriaconta-4,6,8(29),10,12,17,19,21(32),23,25-decaene-2,2,15,15-tetracarboxylate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The asymmetric unit of the title compound, C54H64O12S4, consists of one half of the molecule, which is located on an inversion centre. The heterocyclic six-membered ring adopts a distorted envelope conformation with the spiro C atom as the flap.
Mehmet Akkurt   +4 more
doaj   +1 more source

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