For sorting peas: When a mixture of cycloparaphenylenes (CPPs) is treated with C60, [10]CPP selectively encapsulates C60 forming the shortest fullerene-peapod, [10]CPP⊃C60 (see picture). Such complementary host–guest complexes could be useful for size- and shape-selective separation higher fullerenes carbon nanotubes. Detailed facts importance to specialist readers are published as ”Supporting Information”. documents peer-reviewed, but not copy-edited or typeset. They made available...

Abstract The size‐ and orientation‐selective formation of the shortest‐possible C 70 peapod in solution solid state by using shortest structural unit an “armchair” carbon nanotube (CNT), cycloparaphenylene (CPP), has been studied. [10]CPP [11]CPP exothermically formed 1:1 complexes with , thereby giving resulting peapods. A van′t Hoff plot analysis revealed that these 1,2‐dichlorobenzene was mainly driven entropy, whereas theoretical calculations suggested complex gas phase predominantly...

Graphene quantum dots (GQDs) have received considerable attention for their potential applications in the development of novel optoelectronic materials. In generation devices, GQDs that are regulated terms size and dimensions unoxidized at sp(2) surfaces is desired. functionalized with bulky Fréchet's dendritic wedges GQD periphery were synthesized. The single-layered, size-regulated structures dendronized revealed by atomic force microscopy. edge-functionalization led to white-light...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPinnatoxin A: a toxic amphoteric macrocycle from the Okinawan bivalve Pinna muricataDaisuke Uemura, Tong Chou, Takeharu Haino, Akito Nagatsu, Seketsu Fukuzawa, Shu-zhen Zheng, and Hai-sheng ChenCite this: J. Am. Chem. Soc. 1995, 117, 3, 1155–1156Publication Date (Print):January 1, 1995Publication History Published online1 May 2002Published inissue 1 January...

Usually the host, C60 is here guest in a complex between and calix[5]arenes (see picture) that was studied both solution solid state. In solution, as disclosed by ring current method of analysis for 13C NMR spectra based on X-ray crystallographic analysis, van der Waals interactions host play an important role complexation.

Host systems that bind C70 preferentially to C60 are found in the bridged calix[5]arenes 1 (X= alkyne bridge). The complexation-induced shifts of bound fullerene guests provide valuable information on structure and dynamics supramolecular complex.

Passt genau: Bei der Umsetzung von C60 mit einer Mischung Cycloparaphenylenen (CPPs) verkapselte [10]CPP selektiv unter Bildung [10]CPP⊃C60 (siehe Bild). Entsprechende komplementäre Wirt-Gast-Komplexe könnten sich als nützlich für die Trennung höherer Fullerene und Kohlenstoffnanoröhren nach Größe Form erweisen. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available...

Chiral tris(phenylisoxazolyl)benzenes possessing a perylenebisimide moiety assembled to form helical stacks. The self-assembling behavior of the stacks responded changes in solvent properties, temperature, and concentration. Strong circular dichroism (CD) circularly polarized luminescence (CPL) their assemblies were displayed, controlled by external stimuli.

Conversion of ring size from pillar[5]arene to pillar[6-15]arenes and isolation pillar[n]arene homologues (n = 11-13) with known 6-10) are demonstrated. Pillar[10]arene formed the most stable host-guest complex C60 among pillar[5-14]arenes.

Dumbbell fullerene 1 and ditopic bisdouble-calix[5]arene 2 were synthesized. Their iterative host-guest complexations create the supramolecular nano network. Scanning electron microscopy revealed formation of branched fiber, possessing a length more than 100 mum widths 250-500 nm on glass plate. More detailed information was given by atomic force microscopy. The formed fibers mica plate have 60-90 heights 1.2-1.9 nm. nanosize assemblies are probably composed bundle 40-60 polymer chains...

We report UV photodissociation (UVPD) and IR-UV double-resonance spectra of dibenzo-18-crown-6 (DB18C6) complexes with alkali metal ions (Li+, Na+, K+, Rb+, Cs+) in a cold, 22-pole ion trap. All the show number vibronically resolved bands 36 000–38 000 cm–1 region. The Li+ Na+ each exhibit two stable conformations cold trap (as verified by double resonance), whereas Cs+ exist single conformation. analyze structure conformers aid density functional theory (DFT) calculations. In complexes,...

Networking: A bisporphyrin compound possessing an electron-deficient guest moiety assembles in a head-to-tail manner to form polymeric aggregates. Diffusion-ordered NMR spectroscopy and viscosity measurements of the aggregates confirmed formation sizable supramolecular polymers. Widely spread nanonetworks (see picture) are formed solid state. Detailed facts importance specialist readers published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They...

Pt(<sc>ii</sc>) complexes possessing phenylisoxazole moieties self-assembled to form helical stacked aggregates which display aggregation-induced circularly polarized luminescence.

Abstract Nature precisely manipulates primary monomer sequences in biopolymers. In synthetic polymer sequences, this precision has been limited because of the lack polymerization techniques for conventional synthesis. Engineering sequence a main chain represents considerable challenge science. Here, we report development sequence-controlled supramolecular terpolymerization via self-sorting behavior among three sets monomers possessing mismatched host–guest pairs. Complementary...

Encapsulation of chiral guests in the dissymmetric capsule 1⋅4 BF4 formed diastereomeric supramolecular complexes G⊂1⋅4 (G: guest). When 2 a-q were encapsulated within space self-assembled , circular dichroism (CD) was observed at absorption bands that are characteristic π-π* transition bipyridine moiety capsule, which suggests P and M helicities biased by guest complexation. The helicity complex (S)-2 l⊂1⋅4 determined to be predominant, based on CD exciton coupling theory DFT calculations....

Abstract Chemical modification of graphene quantum dots (GQDs) can influence their physical and chemical properties; hence, the investigation effect organic functional groups on GQDs is importance for developing GQD–organic hybrid materials. Three peripherally functionalised having a third‐generation dendritic wedge (GQD‐ 2 ), long alkyl chains 3 ) polyhedral oligomeric silsesquioxane group 4 were prepared by Cu I ‐catalysed Huisgen cycloaddition reaction GQD‐ 1 with azides. Cyclic...

A tetrakis(porphyrin) with branched side chains self-assembled to form supramolecular helical polymers both in solution and the solid state. The helicity of was determined by chirality solvent molecules, which permitted polymer be used chiral sensing.

A new octadentate cavitand forms a stable dimeric molecular capsule via metal-coordination, creating large and elaborate three-dimensional cavity in which aromatic guests are accommodated to form supramolecular complexes.

The synthesis and spectroscopic characterization of a cavitand-based coordination capsule 14 BF4 nanometer dimensions is described. Encapsulation studies large aromatic guests as well aliphatic were performed by using 1H NMR spectroscopy in [D1]chloroform. In addition to the computational analysis shape geometry capsule, an experimental approach estimate interior size cavity discussed. provides highly rigid binding space which molecules with lengths approximately A can be selectively...

S-shaped tetrakisporphyrin 2 forms supramolecular polymeric assemblies via a complementary affinity of its bisporphyrin units in solution. The self-association constant determined by applying the isodesmic model is >10(6) L mol(-1), which suggests that sizable polymer at millimolar concentrations room temperature. electron deficient aromatic guest (TNF) binds within molecular clefts provided charge-transfer interaction. This complexation completely disrupts assembly. long, fibrous fragments...

Hand in hand: A polyphenylacetylene with C60 moieties can be cross-linked by a homoditopic tetrakiscalix[5]arene host formation of specific supramolecular complex (see picture). This noncovalent interaction leads to an increase the molecular weight polymer and produces morphological changes upon addition host. Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted...

Tris(phenylisoxazolyl)benzene stacks in a columnar fashion to form helical fibers that act as an organogelator, and the supramolecular chirality is asymmetrically induced presence of tiny amount chiral source solution.