Spontaneous Resolution of Evans–Showell-Type Polyoxometalates in Constructing Chiral Inorganic–Organic Hybrid Architectures

An, Haiyan; Wang, Lin; Hu, Ying; Xu, Tao; Hou, Yujiao

doi:10.1021/acs.inorgchem.5b01994

Cited by 32 publications

(19 citation statements)

References 62 publications

(116 reference statements)

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“…The second approach to assemble chiral POM-based hybrid materials is based on self-assembly by the change of bond distances and bond angles, the formation of lacunae, structure transformation, substitution with other metals, or modification with an achiral structural unit to destroy the mirror or symmetric centers. − In this situation, chiral POM-based hybrid materials can be isolated in enantiomerically pure form by spontaneous resolution. It is very rare for spontaneous resolution phenomena and only happens occasionally. − …”

mentioning

confidence: 99%

A Pair of Rare Three-Dimensional Chiral Polyoxometalate-Based Metal–Organic Framework Enantiomers Featuring Superior Performance as the Anode of Lithium-Ion Battery

Cheng

Shen

Xue

et al. 2018

ACS Appl. Energy Mater.

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Two rare three-dimensional (3D) chiral polyoxometalate-based m e t a l − organic f ramewor k (POMOF) materials, D -were prepared with achiral ligand under solvothermal conditions. They are the first 3D chiral POM-based frameworks based on a Zn-ε-Keggin unit and achiral ligands. The CD spectra and structural analyses indicate that the two polyoxometalate-based metal−organic frameworks are enantiomers. The alternate connection of Zn-ε-Keggin cluster and BPP ligands generate helical infinite chains, while each single spiral chain is further interlinked to adjacent neighboring units to produce a 3D regular ordered chiral architecture with a qtz topology. Compound 1 (mixtures of D-1 and L-1) exhibited excellent stability in both acid and base aqueous solutions. When compound 1 was used as an anode electrode material of rechargeable Li-ion batteries (LIBs), outstanding reversible capacity of 1004 mA h g −1 was obtained after 100 cycles along with cycle stability and outstanding rate performance. Such a high reversible capacity has previously never been reported for the LIB anodes within the pristine POM-based crystals.

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mentioning

confidence: 99%

A Pair of Rare Three-Dimensional Chiral Polyoxometalate-Based Metal–Organic Framework Enantiomers Featuring Superior Performance as the Anode of Lithium-Ion Battery

Cheng

Shen

Xue

et al. 2018

ACS Appl. Energy Mater.

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“…Similar to chiral MOFs, chiral POMs [69,[91][92][93][94] have been also developed as a type of increasingly important NLO materials. [95][96][97][98] One effective method to obtain hybrid POMs with second-order NLO response is to introduce organic molecules with chiral centers. [99] In these compounds, POM might act as an electron acceptor and the organic substrate serves as a donor to generate a second-order NLO hyperpolarizability.…”

Section: Chiral Porous Materials For Second-order Nlomentioning

confidence: 99%

Crystalline Porous Materials for Nonlinear Optics

Shi

Han

et al. 2021

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metal chalcogenides, [17,18] graphdiyne, [19][20][21] etc.) and perovskites [22][23][24][25][26] have been in a state of vigorous development and rapid advances for applications in optoelectronics, catalysis, energy conversion, due to their autologous admirable chemistry and physics characteristics. [27,28] Porous materials, a scientifically evolving and functionally compelling class of solid compounds with well-defined pore structures, such as metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and polyoxometalates (POMs), have attracted broad research interest because of their wide applications in many fields including, but not limited to, adsorption, separation, catalysis, and photovoltaics. [29][30][31][32] Through fine control over the organic units to create predesigned skeletons, an exceptionally large set of materials with unique porous structures and remarkable properties have been developed. [33,34] MOFs, also known as coordination polymers or coordination networks, are one class of crystalline porous materials prepared by the self-assembly of metal ions or clusters with organic ligands. [35] They have drawn tremendous research interest for their customizable chemical structures along with unique chemical and physical properties, [36][37][38][39][40][41] which guarantee their wide applications as adsorption and separation, catalysts, magnetic, and light emitting materials. [36,[42][43][44][45] The use of appropriate ligands with optimized electronic push-pull structures, the degree of conjugation in the system and the encapsulation of guest molecules with different properties are some of the effective strategies to enhance the linear and nonlinear optical properties of the MOFs materials. [46][47][48] COFs, constructed from organic moltifs linking through strong covalent bonding, are a kind of crystalline porous materials in which the atoms of organic units are precisely integrated to create periodic frameworks and nanopores. [49,50] Although the thermal stability and crystallinity of COFs are lower than MOFs, they have received wide attention due to their low density, large surface area and strong ππ stacking. [51][52][53][54] It has been appreciated that the applications of COFs materials in third-order NLO such as two-photon fluorescence have been well developed in recent years. [55][56][57] Similar to MOFs and COFs, POMs formed by the coordination of early transition metals and oxygen atoms are a class of crystalline porous materials with unique structures and properties for their exceptional crystallinity and high stability. [58] POMs are intrinsically electron deficient, and their electronaccepting capability in combination with highly delocalized π-conjugated systems is particularly promising for producing NLO materials. [59,60] The structure of all the crystalline porous Crystalline porous materials have been extensively explored for wide applications in many fields including nonlinear optics (NLO) for frequency doubling, two-photon absorption/emission, optical limiting effect,...

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“…These non‐covalent interactions affect the crystal packing and the specific properties of materials . Organic cations such as viologen ( N , N ′‐disubstituted‐4,4′‐bipyridine), 1,4‐diazabicyclo[2,2,2]octane (dabco), piperazine (pip), and pyridyl were used as building blocks to assemble hybrid materials, and for the preparation of N‐containing organic cations by in situ N‐alkylation in the presence of metal salts, alcohols and strong acids. However, it is rarely reported that alcohols instead of halogenated hydrocarbons can act as alkylation reagents for organic amines …”

Section: Introductionmentioning

confidence: 99%

In situ Alkylation of 4,4′‐Vinylenedipyridine for Inorganic‐Organic Iodides/Iodidomercurates

Cui

Guo

Chu

et al. 2017

Zeitschrift anorg allge chemie

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Solvothermal reactions of HgI 2 , 4,4Ј-vinylenedipyridine, and HI in alcoholic solution (methanol, ethanol, or pentanol) gave rise to a family of organic-inorganic hybrid complexes, formulated as [C 14 H 16 N 2 ][I 4 ] 2-(1), [C 16 H 20 N 2 ][HgI 4 ] (2), and [C 22 H 32 N 2 ][HgI 4 ] 4 (3). Single-crystal X-ray diffraction reveals that all three compounds are discrete structures, including the inorganic anion [I 4 ] 2or [HgI 4 ] 2and an organic cation, where the resulting organic cations were gener-* Prof. Dr. J.-L. Song Fax: +86-51085917763 E-Mail: s070054@e.ntu.edu.sg [a] China-

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Spontaneous Resolution of Evans–Showell-Type Polyoxometalates in Constructing Chiral Inorganic–Organic Hybrid Architectures

Cited by 32 publications

References 62 publications

A Pair of Rare Three-Dimensional Chiral Polyoxometalate-Based Metal–Organic Framework Enantiomers Featuring Superior Performance as the Anode of Lithium-Ion Battery

A Pair of Rare Three-Dimensional Chiral Polyoxometalate-Based Metal–Organic Framework Enantiomers Featuring Superior Performance as the Anode of Lithium-Ion Battery

Crystalline Porous Materials for Nonlinear Optics

In situ Alkylation of 4,4′‐Vinylenedipyridine for Inorganic‐Organic Iodides/Iodidomercurates

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