Cucurbit[10]uril-Based Smart Supramolecular Organic Frameworks in Selective Isolation of Metal Cations

Yao, Yu-Qing; Zhang, Yingjie; Huang, Chao; Zhu, Qian‐Jiang; Tao, Zhu; Ni, Xin‐Long; Wei, Gang

doi:10.1021/acs.chemmater.7b01751

Cited by 48 publications

(28 citation statements)

References 48 publications

(60 reference statements)

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“…Close inspection revealed that there are numerous triangular branches in QSF 12 and square branches in QSF 13 that formed regions with ah igh density of portal carbonyl oxygen atoms (Figure 11 c,f). [82] Hydrogen bonding between the solvent water molecules, HCl molecules filling in the branches,and the portal carbonyl oxygen atoms of the Q [10] molecules in the branches also plays an auxiliary role (the water molecules and HCl molecules are omitted for clarity). Generally,asmaller Q[n] with ahigher density of carbonyl oxygen atoms around its two open portals,s uch as Q [5] and Q [6],i sm ore likely to coordinate to metal ions.…”

Section: Qsfsa Ssembled Via Outer-surface Interactions Of Q[n]smentioning

confidence: 99%

Cucurbit[n]uril‐Based Supramolecular Frameworks Assembled through Outer‐Surface Interactions

et al. 2021

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Porous materials, especially metal–organic frameworks, covalent organic frameworks, and supramolecular organic frameworks, are widely used in heterogeneous catalysis, adsorption, and ion exchange. Cucurbit[n]urils (Q[n]s) suitable building units for porous materials because they possess cavities with neutral electrostatic potential, portal carbonyls with negative electrostatic potential, and outer surfaces with positive electrostatic potential, which may result in the formation of Q[n]‐based supramolecular frameworks (QSFs) assembled through the interaction of guests within Q[n]s, the coordination of Q[n]s with metal ions, and outer‐surface interaction of Q[n]s (OSIQ). This review summarizes the various QSFs assembled via OSIQs. The QSFs can be classified as being assembled by 1) self‐induced OSIQ, 2) anion‐induced OSIQ, and 3) aromatic‐induced OSIQ. The design and construction of QSFs with novel structures and specific functional properties may establish a new research direction in Q[n] chemistry.

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Section: Qsfsa Ssembled Via Outer-surface Interactions Of Q[n]smentioning

confidence: 99%

Cucurbit[n]uril‐Based Supramolecular Frameworks Assembled through Outer‐Surface Interactions

et al. 2021

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“…Similarly, due to the difference in binding affinity, it also exhibited sequence‐selectivity isolation of specific metal cations. Furthermore, the captured metal ions could also be released in HNO 3 medium to recover the metal‐free Q[10]‐based SOF [39] …”

Section: Applications In the Capture And Adsorption Of Hazardous Chemmentioning

confidence: 99%

Potential Applications of Cucurbit[n]urils and Their Derivatives in the Capture of Hazardous Chemicals

Zhang

Chen

Sun

2021

Chemistry A European J

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Cucurbit[n]urils (Q[n]s) are a relatively young family of macrocycles, consisting of glycoluril units bridged by methylene groups, and their unique structures have attracted extensive attention from chemists in recent decades. Due to the presence of a rigid hydrophobic inner cavity and two polar outer portals lined with carbonyl groups, Q[n]s not only encapsulate guest species into the cavity, but also coordinate with metal ions/clusters. Considerable achievements have been obtained in the fields of Q[n]s‐based host–guest chemistry, coordination chemistry, as well as the combination of host–guest and coordination chemistry. Furthermore, the outer surface of Q[n]s has been demonstrated to be capable of interacting with definite species to generate supramolecular architectures in recent years. With more in‐depth research into Q[n]s, their application studies have also emerged as a hot topic. This Minireview focuses on recent advances in the potential applications of solid‐state materials based on Q[n]s and their derivatives for the capture and adsorption of hazardous chemicals from a solution or a gas mixture.

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“…Nowadays, we know that the outer surface interaction of cucurbit[n]urils (Q[n]s), which is attributed to the positive electropotential outer surface of Q[n]s results in the formation of these novel Q[n]-based porous supramolecular frameworks [17]. Our group and others also demonstrated a series of Q[n]-based porous supramolecular frameworks in the absence and presence of different structure directing agents in different mediums [14,[22][23][24][25][26][27][28][29][30][31]. For example, allapally and Tian demonstrated a crystalline form of Q [6] via the outer surface interaction of cucurbit[n]uril, which exhibited high thermal stability, permanent porosity, and the highest specific surface area of any known solid-state forms of Q [6] [22].…”

Section: Introductionmentioning

confidence: 99%

“…Cao and coworkers demonstrated a series of supramolecular compounds constructed from decamethylcucurbit [5]uril (Me 10 Q [5]) and different HPAs or POMs; they found that the Me 10 Q[5]-HPA or POMs-based supramolecular framework exhibited reversible photochromic properties as well as excellent photocatalytic activity toward the degradation of methyl orange and rhodamine B under visible light irradiation [14,25,26]. Recently, we demonstrated a series of simple Q [10]-based supramolecular frameworks in the absence and presence of structure directing agents in aqueous HCl or HNO 3 solutions [27][28][29][30], which not only exhibited sequence selectivity isolation of specific metal cations, thus leading to these architectures being used as metal-selective materials [28], but also exhibited novel adsorption capacities for certain dyes and became novel luminescent materials [29], which could have special selective response to certain volatile compounds [30]. More recently, Fedin and coworkers demonstrated a series of novel supramolecular frameworks based on Q [6] and mono-/polynuclear bismuth(III)-and mercury(II)-ions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Adsorption, and Recognition Properties of a Solid Symmetric Tetramethylcucurbit[6]uril-Based Porous Supramolecular Framework

Tian

Cheng

Zhang

et al. 2020

Journal of Chemistry

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In this work, we reported a porous supramolecular framework (A) constructed of a symmetric tetramethylcucurbit[6]uril (TMeQ[6]) in aqueous HCl solutions; the driving force was the outer surface interaction of cucurbit[n]urils, as well as hydrogen bonding between latticed water molecules and portal carbonyl oxygens of TMeQ[6]. Adsorption experimental results revealed that the porous supramolecular framework can absorb certain fluorophore guests (FGs) to form luminescent assemblies (FG@As) by fluorescence enhancement or colour change, and some of them can respond to certain volatile organic compounds. Thus, the TMeQ[6]-based supramolecular framework could be used as a sensor for certain gas or volatile compounds.

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Cucurbit[10]uril-Based Smart Supramolecular Organic Frameworks in Selective Isolation of Metal Cations

Cited by 48 publications

References 48 publications

Cucurbit[n]uril‐Based Supramolecular Frameworks Assembled through Outer‐Surface Interactions

Cucurbit[n]uril‐Based Supramolecular Frameworks Assembled through Outer‐Surface Interactions

Potential Applications of Cucurbit[n]urils and Their Derivatives in the Capture of Hazardous Chemicals

Synthesis, Adsorption, and Recognition Properties of a Solid Symmetric Tetramethylcucurbit[6]uril-Based Porous Supramolecular Framework

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