Cited by 180Supramolecular Chemistry and ComplexesAdvanced Polymer Synthesis and CharacterizationSupramolecular Self-Assembly in Materials

Ionic Complexes of Metal Oxide Clusters for Versatile Self-Assemblies

Li, Bao, Li, Wen, Li, Haolong, Wu, Lixin·2017·Accounts of Chemical Research

Abstract

The combination of rational design of building components and suitable utilization of driving force affords spontaneous molecular assemblies with well-defined nanostructure and morphology over multiple length scales. The serious challenges in constructing assemblies with structural advantages for the realization of functions programmed into the building components usually lie ahead since the process that occurs does not always follow the expected roadmap in the absence of external intervention. Thus, prefabricated intermediates that help in governing the target self-assemblies are developed into a type of unique building blocks. Metal oxide cluster polyanions are considered as a type of molecular nanoclusters with size scale and structural morphology similar to those of many known inorganic particles and clusters but possess distinctive characteristics. Following the understanding of these clusters in self-assembly and the rationalization of their most efficient design strategy and approach, the obtained fundamental principles can also be applied in common nanoparticle- and cluster-based systems. On the other hand, the deliberate synergy offered by organic countercations that support the self-assembly of these clusters greatly expands the opportunity for the functionalization of complex building units via control of multiple interactions. The ionic combination of the inorganic clusters with hydrophilicity and the cationic organic component with hydrophobicity leads to discrete properties of the complexes. Significantly, the core-shell structure with rigid-flexible features and amphiphilicity will pave the way for hierarchical self-assemblies of the obtained complexes, while the intrinsic characteristics of the metal oxide clusters can be modulated through external physicochemical stimuli. Within this context, over the past decade we have extensively explored the ionic combination of inorganic polyanionic clusters with cationic organic amphiphiles and devoted our efforts to establishing the general rules and structure-property relationships of the formed complexes for constructing self-assemblies at the interface, in solution, and in solid matrixes. Specific interest has been focused on the functional synergy deriving from the incompatible components in highly organized self-assemblies. In this Account, we describe the recent progress on the ionic complexation of polyoxometalate clusters with cationic amphiphiles and the construction of diverse self-assembled nanostructures. First, the fundamental structural characteristics and molecular geometries of the prepared complexes are analyzed. The construction principle and diversity of the self-assembly based on the complexes and the smart stimuli response are then discussed, subject to the adjustment of various non-covalent interactions occurring in the assemblies. Subsequently, we enumerate the functional applications of the ionic complexes assembling into organic, inorganic, and even biological matrixes. The inspiration from the construction of ionic complexation and self-assembly in this Account provides vivid profiles for the design of hybrid materials involving nanoclusters and/or nanoparticles with rich potentials in addition to polyoxometalate chemistry.

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Crossref · 10.1021/acs.accounts.7b00055

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Authors
Li, B., Li, W., Li, H., & Wu, L.
Affiliations
Jilin University (CN)
Corresponding author
Wu, Lixin
Venue
Accounts of Chemical Research
Published
2017-05-16
Volume
50
Issue
6
Pages
1391-1399
ISSN
  • 0001-4842 (ISSN-L)
  • 1520-4898
OpenAlex
W2616360869
Cited by
180
References
55
Citations by year
2026: 11 · 2025: 11 · 2024: 13 · 2023: 15 · 2022: 36 · 2021: 22 · 2020: 19 · 2019: 30 · 2018: 21 · 2017: 2
FWCI
8.23
Type
journal article
Language
en
Open access
closed
Locations
  • Accounts of Chemical Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ministry of Science and Technology of the People's Republic of China (2013CB834503)
  • National Natural Science Foundation of China (21221063, 21574057, 91227110)
  • Jilin Province
Topics
  • Physical Sciences › Chemistry › Organic Chemistry › Supramolecular Chemistry and Complexes
  • Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
  • Physical Sciences › Materials Science › Biomaterials › Supramolecular Self-Assembly in Materials
Keywords
metal oxide clusters, polyoxometalate clusters, ionic complexes, self-assembly, cationic amphiphiles, core-shell nanostructures, stimuli-responsive materials, hierarchical self-assembly, hybrid materials, structure-property relationships, non-covalent interactions, biomaterials, nanoparticle assembly, supramolecular chemistry, organic-inorganic hybrid materials

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