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Formation of [3]catenanes from 10 precursors via multicomponent coordination-driven self-assembly of metallarectangles.

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TLDR
The dynamic catenation process is reversible and can be switched off and on in a controllable manner by successive addition of KPF(6) and 18-crown-6, as monitored by (1)H and (31)P NMR spectroscopy.
Abstract
We describe the formation of a suite of [3]catenanes via multicomponent coordination-driven self-assembly and host–guest complexation of a rectangular scaffold comprising a 90° Pt-based acceptor building block with a pseudorotaxane bis(pyridinium)ethane/dibenzo-24-crown-8 linear dipyridyl ligand and three dicarboxylate donors. The doubly threaded [3]catenanes are formed from a total of 10 molecular components from four unique species. Furthermore, the dynamic catenation process is reversible and can be switched off and on in a controllable manner by successive addition of KPF6 and 18-crown-6, as monitored by 1H and 31P NMR spectroscopy.

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Development of Pseudorotaxanes and Rotaxanes: From Synthesis to Stimuli-Responsive Motions to Applications

TL;DR: Stimuli-Responsive Motions to Applications Min Xue,† Yong Yang,‡ Xiaodong Chi,† Xuzhou Yan,† and Feihe Huang*,† are presented.
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Recent Strategies to Develop Innovative Photosensitizers for Enhanced Photodynamic Therapy.

TL;DR: In this paper, a review aimed at reporting recent strategies to develop innovative organic photosensitizers for enhanced photodynamic therapy, with each example described in detail instead of providing only a general overview, to provide intuitive, vivid, and specific insights to the readers.
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Functional Supramolecular Polymeric Networks: The Marriage of Covalent Polymers and Macrocycle-Based Host-Guest Interactions

TL;DR: This Review summarizes advances made in the area of functional SPNs, with a focus on original literature reports appearing in the past five years, and is organized according to the key macrocycle-based host-guest interactions used to produce various SPNs.
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Dynamic Combinatorial Libraries: From Exploring Molecular Recognition to Systems Chemistry

TL;DR: This perspective will highlight some new methodologies in this field and analyze selected examples of DCLs that are under thermodynamic control, leading to synthetic receptors, catalytic systems, and complex self-assembled supramolecular architectures.
References
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Journal ArticleDOI

Supramolecular coordination: self-assembly of finite two- and three-dimensional ensembles.

TL;DR: In the early 1960s, the discovery of crown ethers and spherands by Pedersen, Lehn, and Cram3 led to the realization that small, complementary molecules can be made to recognize each other through non-covalent interactions such as hydrogen-bonding, charge-charge, donor-acceptor, π-π, van der Waals, hydrophilic and hydrophobic interactions to achieve these highly complex and often symmetrical architectures as mentioned in this paper.
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Synthetic molecular motors and mechanical machines.

TL;DR: The exciting successes in taming molecular-level movement thus far are outlined, the underlying principles that all experimental designs must follow, and the early progress made towards utilizing synthetic molecular structures to perform tasks using mechanical motion are highlighted.
Journal ArticleDOI

Coordination assemblies from a Pd(II)-cornered square complex.

TL;DR: The last 15 years of work with the Pd(II)-cornered unit is summarized in this Account, from the spontaneous formation of a Pd4 square metal complex to a family of architectures such as cages, bowls, boxes, tubes, catenanes, and spheres.
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