Kinked-Helix Actinide Polyrotaxanes from Weakly Bound Pseudorotaxane Linkers with Variable Conformations

Inorganic Chemistry
Fei-Ze LiWei-Qun Shi

Abstract

The incorporation of a mechanically interlocked molecule such as pseudorotaxane into metal-organic coordination polymers has afforded plenty of new hybrid materials with special structures and unique properties. In this work, we employ a weakly bound cucurbit[6]uril (CB[6])-bipyridinium pseudorotaxane as a supramolecular precursor to assemble with uranyl, aiming to construct uranyl-rotaxane coordination polymers (URCPs) with intriguing structures. By adjusting the synthetic conditions, a new kinked-helix uranyl rotaxane compound (URCP3), together with three other compounds URCP1, URCP2, and URCP4 varying from 1D chains to 2D interwoven networks, was obtained. Detailed structural analyses indicate that the pseudorotaxane ligand (C8BPCA@CB[6]) shows great configuration diversity in the construction of URCPs, which is most probably due to the weak binding strength between the host and guest molecules. Specifically, based on the monodentate coordination of the end carboxyl groups of C8BPCA forced by the surrounding unilaterally-chelated oxalate, the entire flexible pseudorotaxane linker will be more likely to undergo conformational change, thereby binding to the uranyl center from both sides of the uranyl equatorial plane and promo...Continue Reading

References

Nov 28, 2001·The Journal of Organic Chemistry·A DayB Snushall
Apr 1, 1951·Proceedings of the National Academy of Sciences of the United States of America·L PAULINGH R BRANSON
Apr 13, 2005·Dalton Transactions : an International Journal of Inorganic Chemistry·Mark Frisch, Christopher L Cahill
Feb 1, 2007·Chemical Society Reviews·Stephen J Loeb
Dec 25, 2007·Acta Crystallographica. Section A, Foundations of Crystallography·George M Sheldrick
Mar 13, 2010·Inorganic Chemistry·Clare E Rowland, Christopher L Cahill
Aug 14, 2012·Chemical Reviews·Michael B Andrews, Christopher L Cahill
Oct 18, 2012·Inorganic Chemistry·Clare E RowlandL Soderholm
Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·George M Sheldrick
Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·Anthony L Spek
Dec 18, 2015·Nature Chemistry·Cécile RocheVirgil Percec
Sep 15, 2016·Chemical Reviews·Alexander SchoedelOmar M Yaghi
Jun 24, 2017·Nature Chemistry·Ryan BaumgartnerJianjun Cheng
Dec 2, 2017·Angewandte Chemie·Rajkumar MisraHosahudya N Gopi
Dec 7, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Wei LiuShuao Wang
Feb 20, 2018·Chemical Communications : Chem Comm·Satoshi KawabataEiji Yashima
Oct 7, 2018·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Neetika RawatB S Tomar
Oct 13, 2018·Chemical Science·Masataka UmetaniAtsuhiro Osuka
Dec 18, 2018·Angewandte Chemie·Rajkumar MisraHosahudya N Gopi

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.