An Unlockable–Relockable Iron Cage by Subcomponent Self‐Assembly

Mal, Prasenjit; Schultz, David; Beyeh, Ngong Kodiah; Rissanen, Kari; Nitschke, Jonathan R.

doi:10.1002/anie.200803066

Cited by 343 publications

(242 citation statements)

References 81 publications

Supporting

Mentioning

232

Contrasting

Unclassified

Order By: Relevance

“…This is in contrast to the encapsulation observed for the water-soluble tetrahedral Fe 4 II L 6 cage assembly of Nitschke et al, which shows a tighter binding of cyclohexane over cyclopentane. 22 Also, it is interesting to note that the larger [Ga 4 L 6 ] 12− cage, reported by Raymond et al, can accommodate a range of n-and cycloalkanes by hydrophobic effect and specifically binds cyclodecane over n-decane in aqueous media. 23 The selectivity of 2 for benzene and CCl 4 encapsulation over other competitive solvents such as CH 2 Cl 2 , CHCl 3 , and C 5 H 10 was derived from mass spectral, NMR, and crystallographic analysis.…”

Section: ■ Experimental Sectionmentioning

confidence: 91%

A Neutral Cluster Cage with a Tetrahedral [Pd₁₂^IIL₆] Framework: Crystal Structures and Host–Guest Studies

et al. 2015

View full text Add to dashboard Cite

A charge-neutral tetrahedral [(Pd3X)4L6] cage assembly built from a trinuclear polyhedral building unit (PBU), [Pd3X](3+), cis-blocked with an imido P(V) ligand, [(N(i)Pr)3PO](3-) (X(3-)), and oxalate dianions (L(2-)) is reported. Use of benzoate or ferrocene dicarboxylate anions, which do not offer wide-angle chelation as that of oxalate dianions, leads to smaller prismatic clusters instead of polyhedral cage assemblies. The porosity of the tetrahedral cage assembly was determined by gas adsorption studies, which show a higher uptake capacity for CO2 over N2 and H2. The tetrahedral cage was shown to encapsulate a wide range of neutral guest solvents from polar to nonpolar such as dimethyl sulfoxide, benzene, dichloromethane, chloroform, carbon tetrachloride, and cyclopentane as observed by mass spectral and single-crystal X-ray diffraction studies. The (1)H two-dimensional diffusion ordered spectroscopy NMR analysis shows that the host and guest molecules exhibit similar diffusion coefficients in all the studied host-guest systems. Further, the tetrahedral cage shows selective binding of benzene, CCl4, and cyclopentane among other solvents from their categories as evidenced from mass spectral analysis. A preliminary density functional theory analysis gave a highest binding energy for benzene among the other solvents that were structurally shown to be encapsulated at the intrinsic cavity of the tetrahedral cage.

show abstract

Section: ■ Experimental Sectionmentioning

confidence: 91%

A Neutral Cluster Cage with a Tetrahedral [Pd₁₂^IIL₆] Framework: Crystal Structures and Host–Guest Studies

et al. 2015

View full text Add to dashboard Cite

show abstract

“…[21] Depending on the nature of their chemical composition and network structure, the properties of MOFs can be tuned flexibly to meet desired functionalities for a wide variety of applications. The majority of MOFs have ordered micro and mesoporous structures useful for the encapsulation of guest materials [22][23][24][25][26][27][28][29] such as gases, [30,31] organic molecules [32,33] and flammable white phosphorus (P 4 ). [34] Compared to other microporous absorption materials, such as activated carbons and celites, these robust frameworks enable researchers to design the size and shape of the nanosize pores by careful choice of organic linkers and metal ions.…”

Section: Metal-organic Framework (Mofs)mentioning

confidence: 99%

Metal‐Containing Polymers: Building Blocks for Functional (Nano)Materials

Wang¹,

McHale²

2010

Macromol. Rapid Commun.

113

View full text Add to dashboard Cite

The incorporation of metallic units into polymer chains has emerged as a promising route towards functional metal-containing (nano)materials. The resulting polymers possess rich functions derived from their metallic elements, such as redox, optical, catalytic and magnetic properties. In addition, the directional and dynamic nature of metal coordination interactions provides further variables for the exploration of novel materials with designed nanostructures. These types of polymers can be synthesized through direct metal-ligand coordination or chain polymerization of metal containing monomers. Depending on the polymerization techniques and starting components, the resulting polymers, akin to their organic counterparts, can be produced in the form of insoluble networks, processible chain structures, gels or colloids. Research into this rising multidisciplinary subject has benefited from recent progress in several related areas such as supramolecular chemistry, colloidal chemistry etc., with the combination of the relative merits of each ensuring further developments in each individual discipline. For example, as a result of studies into organometallic block copolymers self-assembly behavior, living supramolecular polymerization has been unprecedentedly realized for the architectural design of micelles (see image on the right). Nevertheless, the field is still in a developmental stage and offers ample opportunities for fundamental research, as well as material exploration. In this Feature Article, we intend to overview the field with a brief survey of recent literature.

show abstract

“…8 The cage is formed by stirring 2 -formylpyridine ( 9 ) with 4,4 ′ -diaminobiphenyl -2,2 ′ -disulfonic acid ( 10 ) in the presence of iron(II) sulfate; the bis -bidentate imine ligand is formed in situ . 9 The water -soluble Fe L 4 has a purple color and is diamagnetic because iron(II) is in its low spin state. With a cavity volume of 140 Å 3 , it encloses preferably small cyclic hydrocarbons but no organic cations, probably because of its small total charge.…”

Section: Encapsulation Of Labile Speciesmentioning

confidence: 99%

Encapsulation of Reactive Intermediates

Mieusset

Brinker

2010

Molecular Encapsulation

View full text Add to dashboard Cite

An Unlockable–Relockable Iron Cage by Subcomponent Self‐Assembly

Cited by 343 publications

References 81 publications

A Neutral Cluster Cage with a Tetrahedral [Pd₁₂^IIL₆] Framework: Crystal Structures and Host–Guest Studies

A Neutral Cluster Cage with a Tetrahedral [Pd₁₂^IIL₆] Framework: Crystal Structures and Host–Guest Studies

Metal‐Containing Polymers: Building Blocks for Functional (Nano)Materials

Encapsulation of Reactive Intermediates

Contact Info

Product

Resources

About

An Unlockable–Relockable Iron Cage by Subcomponent Self‐Assembly

Cited by 343 publications

References 81 publications

A Neutral Cluster Cage with a Tetrahedral [Pd12IIL6] Framework: Crystal Structures and Host–Guest Studies

A Neutral Cluster Cage with a Tetrahedral [Pd12IIL6] Framework: Crystal Structures and Host–Guest Studies

Metal‐Containing Polymers: Building Blocks for Functional (Nano)Materials

Encapsulation of Reactive Intermediates

Contact Info

Product

Resources

About

A Neutral Cluster Cage with a Tetrahedral [Pd₁₂^IIL₆] Framework: Crystal Structures and Host–Guest Studies

A Neutral Cluster Cage with a Tetrahedral [Pd₁₂^IIL₆] Framework: Crystal Structures and Host–Guest Studies