Linear and crosslinked copolymers of p-tert-butylcalix[4]arene derivatives and styrene: New synthetic approaches to polymer-bound calix[4]arenes

Mendes, Ana Karoline de Almeida; Gregório, Carla C.; Barata, Patrícia D.; Costa, Alexandra I.; Prata, José V.

doi:10.1016/j.reactfunctpolym.2005.01.006

Cited by 12 publications

(8 citation statements)

References 40 publications

(30 reference statements)

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“…As the results showed, the calixarene-based polymer 68 has a signicant enantiodiscrimination. 51 Moreover, Pappalardo et al indicated that synthesis of the poly(p-phenylene ethynylenes) 76 was achieved through the Pdcatalyzed cross-coupling reaction of 1,4-diethynyl-2,5-bis(4methylpentyloxy)benzene 72 with a proper amount of bis-calix [5]arene 74. Through this, they achieved a polycapsular polymer network assembly.…”

Section: Molecular Recognition By Calixarene-based Covalent Polymersmentioning

confidence: 99%

“…However, usually, calixarene-based polymers have been developed through either polymerization of calixarene-containing monomers or xing of calixarene units on a polymeric matrix. [4][5][6] The calixarene-based covalent polymers create an opportunity to produce materials with fantastic features. The polymers containing calixarene moieties on the main or side chains have the capacity to be used as chemical sensors, 7 biosensors, 8 selective membranes, catalysts, 9 microelectronic devices, 10 star-shaped polymers 11,12 and drug delivery systems.…”

Section: Introductionmentioning

confidence: 99%

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Recent progress to construct calixarene-based polymers using covalent bonds: synthesis and applications

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Section: Molecular Recognition By Calixarene-based Covalent Polymersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent progress to construct calixarene-based polymers using covalent bonds: synthesis and applications

et al. 2020

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“…These compounds, due to their structure providing unique well‐defined cavities, can contribute to the fraction of free volume. In recent years, calixarenes in particular have become a subject of great interest 3–25…”

Section: Introductionmentioning

confidence: 99%

“…However, in contrast to many studies concerning the use of calixarenes as building blocks for the construction of sophisticated supramolecular systems, studies of calixarene‐containing polymers are still limited. Some studies reported the synthesis of polymers with calixarene units linked to the polymer chain as pendant groups with the observation of enhanced complexation efficiency compared to monomeric calixarenes 6–14. Another approach, utilizing the possibility of regioselective functionalization of calixarenes for the preparation of derivatives with two functional groups, described the incorporation of calixarene units into the polymer backbone through step‐growth reactions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of calix[4]arene‐containing polyimides

Hobzová

Sysel

Dušková‐Smrčková

2010

Polymer International

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Three types of amino-functionalized calixarenes, i.e. the diaminocalix[4]arenes 5,17-diaminomethyl-25,26,27,28-tetrapropoxycalix[4]arene, 25,27-diaminoethoxy-26,28-dihydroxycalix[4]arene and 5,11,17,23-tetra-tert-butyl-25,27-diaminoethoxy-26,28-dihydroxycalix[4]arene, were synthesized and incorporated as comonomers into the backbones of aromatic polyimides. As a first step, polyimide precursors (poly(amic acid)s) were prepared by condensation reaction of diamine with dianhydride at the stoichiometric ratio. The diamine component was composed of synthesized diaminocalix[4]arene and commercial 4,4 -oxydianiline combined in various molar ratios. The dianhydride used was 4,4 -oxydiphthalic anhydride. The poly(amic acid)s were characterized using intrinsic viscosity measurements and their chemical composition was determined using 1 H NMR spectroscopy. The precursors were then transformed into the polyimides using a thermal treatment. Thermal and dynamic mechanical behaviour, wide-angle X-ray diffraction and solubility of the resulting polyimide films in selected solvents were evaluated. The structure-property relationship of the novel types of synthesized polyimides is discussed in terms of the calixarene monomer used and the fraction of it incorporated into the polymer backbone.

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“…In particular, calixarene functionalized materials have been prepared by two general synthetic methods. One is achieved by immobilization of calixarene units on an existing polymeric matrix21–30 and the other is based on polymerization31–36 or copolymerization37–45 of a suitably functionalized calixarene monomer. Most of the works have been done using calix[4]arene derivatives in order to obtain polymeric resins with high extraction ability towards different anions or cations.…”

Section: Introductionmentioning

confidence: 99%

Polycationic calix[8]arene receptors grafted onto polymeric matrix: smart material for heparin neutralization

Mecca

Cunsolo

2009

Polymers for Advanced Techs

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Heparin is widely prescribed as an anticoagulant medicine and is beneficial to millions of patients. However, the use of heparin in open-heart surgery, where it enables a continuous flow of blood throughout the process, is still problematic. Its anticlotting properties are crucial for a successful operation, but after surgery the patient's blood needs to return normal and acquire its former ability to coagulate. If this process fails, the outcome may prove fatal. Currently, protamine sulfate is used to neutralize heparin after open-heart surgery. However, protamine itself causes allergic reactions and other side effects and is sometimes fatal. For this reason, the finding of new heparin antagonists or much safer methods for heparin removal from blood is currently of great interest. Recently we have reported on the synthesis of calix[8]arene polycations that have shown an exceptional neutralization power towards heparin both in physiological solution and in blood. In this work, we have studied the grafting of these calix[8]arene derivatives onto a polymeric matrix with the aim to obtain a new polymeric material appropriate for the design and realization of filters or membranes able to effectively remove heparin from blood. In this way, also the side effects connected to systemic administration of heparin antagonists are avoided. Besides the synthesis, preliminary results on the neutralization capacity towards heparin, both in physiological solution and in blood, are reported.

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Linear and crosslinked copolymers of p-tert-butylcalix[4]arene derivatives and styrene: New synthetic approaches to polymer-bound calix[4]arenes

Cited by 12 publications

References 40 publications

Recent progress to construct calixarene-based polymers using covalent bonds: synthesis and applications

Recent progress to construct calixarene-based polymers using covalent bonds: synthesis and applications

Synthesis and characterization of calix[4]arene‐containing polyimides

Polycationic calix[8]arene receptors grafted onto polymeric matrix: smart material for heparin neutralization

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