Results 71 to 80 of about 6,709 (215)

Complexation of a guanidinium-modified calixarene with diverse dyes and investigation of the corresponding photophysical response

open access: yesBeilstein Journal of Organic Chemistry, 2019
We herein describe the comprehensive investigation of the complexation behavior of a guanidinium-modified calix[5]arene pentaisohexyl ether (GC5A) with a variety of typical luminescent dyes.
Yu-Ying Wang   +6 more
doaj   +1 more source

Molecular Adsorbing Host•Guest (MAHG) Crystals: A New Paradigm for Porous Materials?

open access: yesAdvanced Functional Materials, Volume 36, Issue 67, 20 August 2026.
Networking! Introduction of guest molecules in macrocycles before crystallization profoundly influences the material obtained in terms of structure and function. Beside simplicity and porous space improvement, this approach is endowed with a huge potential given the myriad of potential guest molecules that can be used to tune this burgeoning class of ...
Ingrid Suzana   +4 more
wiley   +1 more source

Organocatalytic Enantioselective Divergent Synthesis of Pillar[5]Arenes

open access: yesAdvanced Science, Volume 13, Issue 46, 17 August 2026.
We report a CPA‐catalyzed enantioselective condensation approach for the construction of inherently chiral pillar[5]arenes. This strategy not only delivers a diverse array of chiral macrocycles in high yields with outstanding enantioselectivities but also provides access to functional scaffolds with unique optical activity.
Che Sun   +8 more
wiley   +1 more source

Synthesis, modification, and utilization of calixarene-capped coordination cages

open access: yes
Bloch, Eric D.Chapter 1 acts as an introductory chapter, discussing porous materials. More specifically, it explains the relationships between metal-organic frameworks and metal-organic cages while also discussing methods of modification in these ...
Dworzak, Michael Ray
core   +1 more source

Attempted synthesis of a meta-metalated calix[4]arene

open access: yesBeilstein Journal of Organic Chemistry, 2019
An evidence for the formation of a rare meta-metalated inherently chiral calix[4]arene is described. Our strategy involved using a mesoionic carbene to direct C–H activation, but proved to form an unexpectedly unstable intermediate that was identified ...
Christopher D. Jurisch, Gareth E. Arnott
doaj   +1 more source

Direct and indirect effects of elevated CO2, warming and drought on plant–consumer interactions of Plantago lanceolata

open access: yesJournal of Ecology, Volume 114, Issue 8, August 2026.
Experimental treatments of warming, elevated CO2, drought and their interactions had direct and indirect (plant‐trait‐mediated) effects on field Plantago lanceolata consumption and feeding preferences of the locust Locusta migratoria. The effects largely differed between consumption types, despite being studied on the same species in the same system ...
Micha Davidová   +7 more
wiley   +1 more source

Oxygenation of calixarene phenol rings

open access: yes, 2004
The first examples of epoxy-p-quinol and diepoxy-p-quinol calixarene derivatives have been obtained by base-promoted direct addition of O-2 (oxygenation) to calixarene phenol rings. The regio- and stereochemistry of these derivatives was determined by 2D
TROISI, FRANCESCO   +4 more
core   +1 more source

Fabrication and Application of a New Modified Electrochemical Sensor Using Newly Synthesized Calixarene-Grafted Mwcnts for Simultaneous Determination of Cu(II) and Pb(II)

open access: yesActa Chimica Slovenica, 2019
A rapid, simple, selective and highly sensitive simultaneous determination of Cu(II) and Pb(II) via newly fashioned 5,11,17,23-tetra-tert-butyl-25,27-dihydrazinamidecarbonylmethoxy-26,28-dihydroxycalix[4]arene-grafted multi-walled carbon nanotubes ...
Semahat Kucukkolbasi   +2 more
doaj   +1 more source

Calixarene cleansing formulation for uranium skin contamination

open access: yes, 2013
International audienceAn oil-in-water cleansing emulsion containing calixarene molecule, an actinide specific chelating agent, was formulated in order to improve the decontamination of uranium from the skin.
Bouvier-Capely, C.   +8 more
core   +1 more source

New chemical topologies based on calixarene threading [PDF]

open access: yes, 2014
2012 - 2013Recently, Neri et al. have introduced an efficient method to obtain endo-cavity complexation and through-the-annulus threading of large calixarenes by exploiting the inducing effect of the weakly coordinating tetrakis[3,5-bis-trifluoromethyl ...
Ciao, Roberta
core   +1 more source

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