Themed collection Supramolecular chemistry: self-assembly and molecular recognition
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Selectively sensing first-row transition metal ions through fluorescence enhancement
Fluorescence signaling systems that give enhancement in the presence of first-row transition metal ions are discussed.
RSC Adv., 2014,4, 26585-26620
https://doi.org/10.1039/C4RA02054E
Radicals in metal–organic frameworks
We discuss early advances in the incorporation of radicals into the ever evolving class of materials known as metal–organic frameworks.
RSC Adv., 2014,4, 17498-17512
https://doi.org/10.1039/C4RA00958D
Self-assembly of supramolecular triangles with neutral trans-PdCl2 directing units
Pd(II)-directed self-assembly of homoleptic metal–polypyridyl complexes functionalized with 3-pyridyl groups gives rise to supramolecular metallo-triangles as confirmed by a combination of analytical techniques.
RSC Adv., 2014,4, 21262-21266
https://doi.org/10.1039/C4RA01596G
Anion-dependent spin crossover in solution for an iron(II) complex of a 1H-pyrazolyl ligand
The spin-crossover equilibrium midpoint temperature (T1/2) in [Fe(3-bpp)2]X2 (3-bpp = 2,6-di{pyrazol-3-yl}pyridine) varies from 259 K when X− = BPh4− to 277 K when X− = Br−, in a polar acetone–water solvent mixture.
RSC Adv., 2014,4, 11240-11243
https://doi.org/10.1039/C4RA00230J
Hydrogen-bonding driven luminescent assembly and efficient Förster Resonance Energy Transfer (FRET) in a dialkoxynaphthalene-based organogel
Co-assembly of FRET donor–acceptor pair facilitates highly efficient energy transfer in gel state.
RSC Adv., 2014,4, 43564-43571
https://doi.org/10.1039/C4RA08920K
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Supramolecular assemblies of semiconductor quantum dots and a bis(bipyridinium) derivative: luminescence quenching and aggregation phenomena
CdSe and CdSe–ZnS nanocrystal aggregates are formed in solution in the presence of a bis(bipyridinium) species, and disrupted upon addition of a macrocyclic host.
RSC Adv., 2014,4, 29847-29854
https://doi.org/10.1039/C4RA03259D
Subtle backbone modifications control the interpenetration of dibenzosuberone-based coordination cages
The self-assembly of interpenetrated double-cages was examined with respect to various synthetic modifications of the dibenzosuberone backbone.
RSC Adv., 2014,4, 29724-29728
https://doi.org/10.1039/C4RA04679J
Ester-substituted cyclometallated rhodium and iridium coordination assemblies with π-bonded dioxolene ligand: synthesis, structures and luminescent properties
A series of functionalized cyclometallated rhodium and iridium coordination assemblies 2–7 displaying a π-bonded dioxolene ligand is described.
RSC Adv., 2014,4, 23740-23748
https://doi.org/10.1039/C4RA01185F
A 4-tert-butylcalix[4]arene tetrahydroxamate podand based on the 1-oxypiperidine-2-one (1,2-PIPO−) chelate. Self-assembly into a supramolecular ionophore driven by coordination of tetravalent zirconium or hafnium(IV)
K+ is encapsulated by 2 : 2 complexes of tetravalent zirconium or hafnium with the calix[4]arene podand 1H4 carrying four cyclic hydroxamate binding units.
RSC Adv., 2014,4, 22743-22754
https://doi.org/10.1039/C4RA00977K
Anion dependent silver(I) complexes of pyrazine mono-N-oxide
Pyrazine mono-N-oxide reacts with silver salts to form either discrete complexes involving monodentate N-coordination or 1D coordination polymers in which the ligand acts in a N,O-bridging bidentate coordination mode.
RSC Adv., 2014,4, 22449-22454
https://doi.org/10.1039/C4RA01336K
New insights into dihydrogenphosphate recognition with dirhenium(I) tricarbonyl complexes bridged by a thiourea moiety
Three thiourea ligands and their dirhenium(I) complexes are reported that show an unusual cooperative binding to two dihydrogenphosphate anions; this could explain the high selectivity for phosphate in many reported anion receptors.
RSC Adv., 2014,4, 18442-18452
https://doi.org/10.1039/C4RA00912F
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The versatility of “click” reactions: molecular recognition at interfaces
“Click” reactions allow functionalizing azide-terminated gold surfaces with host and guest molecules to examine molecular recognition at interfaces.
RSC Adv., 2014,4, 17694-17702
https://doi.org/10.1039/C4RA01730G
An octahedral aluminium(III) complex as a three-fold node for supramolecular heterometallic self-assemblies: solution and solid state chemistry
A ligand possessing two orthogonal metal binding sites is designed to bind three-fold and four-fold symmetric metal ions in such a way as to form a cage.
RSC Adv., 2014,4, 16686-16693
https://doi.org/10.1039/C4RA00575A
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Melting temperatures deduced from molar volumes: a consequence of the combination of enthalpy/entropy compensation with linear cohesive free-energy densities
Exploiting a simple harmonic potential for modelling intermolecular interactions results in chemically intuitive correlations connecting molecular volumes with melting enthalpies and entropies.
RSC Adv., 2014,4, 15740-15748
https://doi.org/10.1039/C4RA00348A
BODIPY dyes functionalized with 2-(2-dimethylaminophenyl)ethanol moieties as selective OFF–ON fluorescent chemodosimeters for the nerve agent mimics DCNP and DFP
Hand held sensing kits for detecting nerve agents simulants.
RSC Adv., 2014,4, 15975-15982
https://doi.org/10.1039/C4RA00710G
Preparation of open and closed forms of the lvt network with Cu(II) complexes of structurally related 1,2-diazole ligands
Two Cu(II) coordination polymers prepared from 1H-indazole-3-carboxylic acid and 1H-pyrazole-3-carboxylic acid form 3-D coordination polymers described by the lvt topology, and their frameworks are either of closed or open forms, respectively.
RSC Adv., 2014,4, 15770-15775
https://doi.org/10.1039/C4RA02147A
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The one pot synthesis of heterobimetallic complexes from a homoditopic pyrimidine–hydrazone ligand
Three new heterobimetallic complexes have been synthesised facilely in high yield and purity from a symmetric homoditopic pyrimidine-hydrazone ligand in a one-pot, two step reaction.
RSC Adv., 2014,4, 14550-14556
https://doi.org/10.1039/C3RA47735E
Acid-induced formation of hydrogen-bonded double helix based on chiral polyphenyl-bridged bis(2,2′-bipyridine) ligands
Chiral polyphenyl-bridged bis(2,2′-bipyridine) ligands L2–4 give intense CD signals when protonated with tetrachloroferric acid or perchloric acid. X-ray crystal structure of [(L2)2H2](FeCl4)2 shows that a double-stranded helix stabilized by both interior and exterior hydrogen bonding is formed. Theoretical DFT calculations show that such stabilization exists in solution.
RSC Adv., 2014,4, 14513-14526
https://doi.org/10.1039/C4RA00849A
Bis-triazolium containing macrocycles, pseudorotaxanes and interlocked structures for anion recognition
The use of the bis-triazolium motif to prepare potent anion receptors is described. A bis-triazolium axle containing rotaxane exhibits selective halide anion recognition in competitive solvent media.
RSC Adv., 2014,4, 12133-12147
https://doi.org/10.1039/C4RA00615A
Assembling model tris(bipyridine)ruthenium(II) photosensitizers into ordered monolayers in the presence of the polyoxometallate anion [Co4(H2O)2(α-PW9O34)2]10−
Model ruthenium(II) photosensitizers with long alkyl chains are assembled into ordered monolayers on water with or without an anionic polyoxometallate. LB films on mica substrates are visualized using AFM.
RSC Adv., 2014,4, 11766-11775
https://doi.org/10.1039/C4RA00085D
Insight into the dynamic ligand exchange process involved in bipyridyl linked arene ruthenium metalla-rectangles
Ligand exchange processes of metalla-rectangles have been explored using 1H/2D isotope labelling, showing that ligand exchange does not proceed spontaneously.
RSC Adv., 2014,4, 8597-8604
https://doi.org/10.1039/C3RA46859C
An anion-binding fluorinated alcohol isophthalamide isostere
The anion complexation properties of a fluorinated alcohol that is isosteric with a simple isophthalamide revealed that the alcohol can complex weakly basic anions with stability constants greater than those of the isophthalamide.
RSC Adv., 2014,4, 5389-5393
https://doi.org/10.1039/C3RA45956J
About this collection
Welcome to this themed collection ‘Supramolecular chemistry: self-assembly and molecular recognition,’ Guest Edited by Professor Mike Ward (University of Sheffield, UK). The articles presented here cover many aspects of the formation of, and molecular recognition with, non-covalent self-assembled systems. Systems studied span the range of supramolecular assemblies from MOFs to gels, and potential applications or functional behaviour that are on display here include host/guest chemistry, spin crossover, molecular sensors, and extraction/separation. This collections of articles powerfully illustrates the diversity and increasing importance of supramolecular chemistry, and we hope you enjoy reading it.