Unravelling the structure of the C<sub>60</sub> and p-Bu<sup>t</sup>-calix[8]arene complex

Chen, Xianjue; Boulos, Ramiz A.; Slattery, Ashley; Atwood, Jerry L.; Raston, Colin L.

doi:10.1039/c5cc03941j

Cited by 14 publications

(7 citation statements)

References 18 publications

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“…separation, energy conversion, contamination enrichment, and so on. [7][8][9][10] In particular, MOFs have been widely studied as size-and shape-selective heterogeneous catalysts due to their large pore size, high BET surface areas and diverse functionalizations. [11][12][13][14][15] The removal of the coordinated solvents on the metal ion/cluster could generate the coordinatively unsaturated sites, which can be used as the activators in many organic reactions similar to the Lewis acid catalysts.…”

Section: Introductionmentioning

confidence: 99%

Retracted: Porous Gd^III‐Organic Framework as a Dual‐Functional Material for Cyanosilylation of Aldehydes and Ablation of Human Liver Cancer Cells

Han

Yan

Liu

2019

Zeitschrift anorg allge chemie

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Metal‐organic frameworks (MOFs) have gained great attention in recent years because they could behave as multifunctional materials which combine the advances of porous solids and coordination complexes. With the aim of constructing multifunctional MOFs, in this study, we choose a Y‐shaped tricarboxylic ligand biphenyl‐3,4′,5‐tricarboxylic acid (H3bpt) to react with GdIII ions to afford a new dual‐functional lanthanide‐organic framework with the chemical formula of [Gd2(bpt)2(H2O)2]·(DMF)2(H2O)6 (1) (DMF = N,N‐dimethylformamide) under solvothermal condition. The title complex was characterized by means of elemental analysis, FT‐IR spectroscopy, thermogravimetric and X‐ray diffraction analyses. Crystal structure analysis reveals that compound 1 is composed of 1D helical chain secondary building units that connect by the bpt3– ligands into a 3D framework with 1D nanosized channels running along the b axis. In view of its high porosity and accessible open metal sites, the activated 1 (1a) was studied for the cyanosilylation of aldehydes under solvent‐free conditions. The catalytic activity of 1a is much higher than that of compound 1, indicating that the exposed open metal sites of 1a is beneficial to the cyanosilylation reaction. In connection to these, the different cytotoxicities of 1 and 1a were also evaluated on four human liver cancer cells (SMMC‐7721, Bel‐7402, MHCC97 and Hep3B) by the MTT assay.

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Section: Introductionmentioning

confidence: 99%

Retracted: Porous Gd^III‐Organic Framework as a Dual‐Functional Material for Cyanosilylation of Aldehydes and Ablation of Human Liver Cancer Cells

Han

Yan

Liu

2019

Zeitschrift anorg allge chemie

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“…Recently, a post-synthesis method involving single-crystalto-single-crystal (SCSC) transformation has attracted much interest in solid-state reactions for crystal engineering and post-synthesis (Vittal, 2007;Aggarwal et al, 2015;Chaudhary et al, 2017;Li et al, 2018). This method provides an oppor-tunity to understand the related solid-state transformation and to prepare new functional materials through various external stimuli, including heat (Liu et al, 2009), light (Liu et al, 2010;Lee et al, 2017), a solvent (Song et al, 2014;Chen et al, 2015;Ming & Shi, 2019;Chan et al, 2017), pressure (Jin et al, 2013) and cations or anions (Yao et al, 2012). This method differs from guest exchange or guest adsorption/desorption, which involves the breakage and/or formation of coordination bonds as well as substantial rearrangement of the network through intra-and/or intermolecular interactions that stabilize the crystal packing structures.…”

Section: Introductionmentioning

confidence: 99%

Solvent-triggered single-crystal-to-single-crystal transformation from a monomeric to polymeric copper(II) complex based on an aza macrocyclic ligand

Shin

Jeong

Kim

et al. 2020

Acta Crystallogr Sect B

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Reversible solvent‐triggered single‐crystal‐to‐single‐crystal (SCSC) transformations are observed between two copper(II) azamacrocyclic complexes: [Cu(C16H38N6)(H2O)2](C12H6O4) (1) and [Cu(C16H38N6)(C12H6O4)] (2). Complex (1) was prepared via self‐assembly of a copper(II) azamacrocyclic complex containing butyl pendant groups, [Cu(C16H38N6)(ClO4)2], with 2,7‐naphthalenedicarboxylic acid. When monomeric compound (1) was immersed in CH3OH, coordination polymer (2) was obtained, indicating a solvent‐triggered SCSC transformation. Furthermore, when (2) was immersed in water, an reverse SCSC transformation from (2) to (1) occurred. Complex (1) presents a 3D supramolecular structure formed via intermolecular hydrogen‐bonding interactions, whereas complex (2) features a 1D zigzag coordination polymer. The reversible SCSC transformation of (1) and (2) was characterized using single‐crystal X‐ray diffraction and in situ powder X‐ray diffraction techniques. Despite its poor porosity, complex (2) displayed interesting CO2 adsorption behaviour under CO2 gas.

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“…However, the synthesis and properties of nanocrystals based on the C 60 /calixarene host-guest complex have rarely been studied before. To the best of our knowledge, only Chen et al attempted to fabricate C 60 /calixarene complex crystals by adding calixarenes into the toluene solution of C 60 [22], but the dimension and morphologies of such crystals cannot be controlled, and the change in the properties caused by the host-guest structure is still unknown. Combining our interests in the potential applications of C 60 /calixarene host-guest complex nanocrystals with the understanding of the interaction between the host-guest members, we have worked to synthesize and investigate the luminescence properties of C 60 /calixarene host-guest complex nanocrystals.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and high pressure studies of white luminescence host–guest complex nanocrystals based on C₆₀ and p-But-calix[8]arene

et al. 2020

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Host–guest structured nanocrystals consisting of p-But-calix[8]arene and fullerene C60 were fabricated with the facial solution deposition method. The as-prepared host–guest complex nanocrystals are well crystallized in a tetragonal structure, in which the guest C60 and host p-But-calix[8]arene molecules interact with each other via the van der Waals force. The host–guest crystal has a wider band gap compared to that of C60 crystals. The luminescence range of the host–guest structured nanocrystals was widely extended, and its photoluminescence (PL) intensity was highly enhanced by one order of magnitude. High pressure studies on such host–guest nanocrystals were carried out using the diamond anvil cell technique with the associated spectroscopic measurements. Raman and PL spectra show a phase transition occurred on the samples owing to the deformation of fullerene molecules. A PL behavior change was also observed synchronously with the phase transition. The host–guest structure strongly influences the structure and optical behaviors of C60 under pressure.

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Unravelling the structure of the C₆₀ and p-Bu^t-calix[8]arene complex

Cited by 14 publications

References 18 publications

Retracted: Porous Gd^III‐Organic Framework as a Dual‐Functional Material for Cyanosilylation of Aldehydes and Ablation of Human Liver Cancer Cells

Retracted: Porous Gd^III‐Organic Framework as a Dual‐Functional Material for Cyanosilylation of Aldehydes and Ablation of Human Liver Cancer Cells

Solvent-triggered single-crystal-to-single-crystal transformation from a monomeric to polymeric copper(II) complex based on an aza macrocyclic ligand

Synthesis and high pressure studies of white luminescence host–guest complex nanocrystals based on C₆₀ and p-But-calix[8]arene

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Unravelling the structure of the C60 and p-But-calix[8]arene complex

Cited by 14 publications

References 18 publications

Retracted: Porous GdIII‐Organic Framework as a Dual‐Functional Material for Cyanosilylation of Aldehydes and Ablation of Human Liver Cancer Cells

Retracted: Porous GdIII‐Organic Framework as a Dual‐Functional Material for Cyanosilylation of Aldehydes and Ablation of Human Liver Cancer Cells

Solvent-triggered single-crystal-to-single-crystal transformation from a monomeric to polymeric copper(II) complex based on an aza macrocyclic ligand

Synthesis and high pressure studies of white luminescence host–guest complex nanocrystals based on C60 and p-But-calix[8]arene

Contact Info

Product

Resources

About

Unravelling the structure of the C₆₀ and p-Bu^t-calix[8]arene complex

Retracted: Porous Gd^III‐Organic Framework as a Dual‐Functional Material for Cyanosilylation of Aldehydes and Ablation of Human Liver Cancer Cells

Retracted: Porous Gd^III‐Organic Framework as a Dual‐Functional Material for Cyanosilylation of Aldehydes and Ablation of Human Liver Cancer Cells

Synthesis and high pressure studies of white luminescence host–guest complex nanocrystals based on C₆₀ and p-But-calix[8]arene