Well organized! A new class of phosphorescent materials was obtained by the coupling trialkylgallate-functionalized alkynes to a planar PtII terpyridine unit. Pt⋅⋅⋅Pt interactions in these complexes lead formation highly colored organogels and columnar liquid crystals (see picture). Amide groups linking gallate alkyne units provide additional stabilization structures through hydrogen bonding. Supporting information for this article is available on WWW under...

Two functional ethynyl-pyrene derivatives have been designed and synthesized by di- tetra-substitutions of bromo pyrene with N-(4-ethynylphenyl)-3,4,5-tris(hexadecyloxy)benzamide fragments. The photoluminescence wavelength the core can be tuned substitution pattern state matter (solid, solution, gel, or liquid crystal). disubstituted derivative 1 is not mesomorphic but produces robust highly fluorescent gels in DMF, toluene, cyclohexane. well-defined fibers ropes gel states were...

Supramolecular gels and liquid-crystalline materials containing borondipyrromethene (F-Bodipy) are a new class of highly luminescent built by attachment long-chain alkoxydiacylamido scaffoldings to boradiazaindacene templates. Robust were formed in nonane, luminescence spectroscopy was used probe the aggregation processes flat indacene cores. Coincidently, columnar mesophase obtained from pure material over wide temperature range, allowing textural observations fluorescence microscopy.

Abstract A strip of a liquid crystal elastomer doped with near‐infrared dye one side crosslinked monodomain and the other polydomain along thickness behaves like multifunctional photoactuator without need for support. flat two ends fixed on substrate surface forms moving bump under laser scanning, which can be used as light‐fueled conveyor to transport an object. Cutting off scanning free makes soft flexible millimeter‐scale crawler that not only move straight climb inclined surface, but...

Piling up excited states to reach upconversion (UC) is severely restricted by vibrational quenching mechanisms, especially when one looks at discrete molecular entities in solution. By carefully controlling the supramolecular assembly processes resulting from strong electrostatic interactions between negatively charged Yb complexes and Tb3+ cations aqueous solutions, we engineered formation of heteropolynuclear [(YbL)2Tb x] compositions ( x = 1 2). These edifices display a phenomenon...

A readily synthesized dipeptide shows unprecedented gelation behavior when dispersed and submitted to ultrasound in nonsolvents. SEM FFEM revealed spectacular shape changes from a sheet-like material into highly interconnected fiber network ribbons while the maintains an anti conformation inside β-sheets at molecular scale.

WO3 nanoparticles in the 5−30 nm range have been prepared by solvothermal treatment of tungsten chloride benzyl alcohol up to 210 °C followed annealing air. The has performed resistive or microwave heating and leads agglomerates oxide covered organic residues. As determined thermogravimetric measurements air, residues removed at 350 for samples least 420 those heating. When is used, specific surfaces are 20−90 m2/g corresponding particles 10−30 nm, but smaller sizes, 140 surface 6 diameter,...

Lanthanide complexes (Ln=Eu, Tb, and Yb) that are based on a C2 -symmetric cyclen scaffold were prepared characterized. The addition of fluoride anions to aqueous solutions the resulted in formation dinuclear supramolecular compounds which anion is confined into cavity formed by two complexes. assembly process was monitored UV/Vis absorption, luminescence, NMR spectroscopy high-resolution mass spectrometry. X-ray crystal structure europium dimer revealed architecture stabilized synergistic...

Molecular copper iodide clusters with the [Cu4I4] cubane core have been functionalized by phosphine ligands carrying protomesogenic gallate-based derivatives bearing either long alkyl chains (C8, C12, and C16) or cyanobiphenyl (CBP) fragments. The mesomorphic properties of were studied combining differential scanning calorimetry (DSC), polarized optical microscopy (POM), small-angle X-ray scattering (SAXS) experiments. Whereas solely present amorphous crystalline states, cluster CBP...

A novel family of highly functionalized molecules consisting a central 4-methyl-3,5-diacylaminobenzene platform linked in close proximity to the methyl group by two lateral aromatic rings each equipped with long alkoxy chains has been rationally designed. The presence amide tethers and chelating phenanthroline fragment connected via an ester dipole formed new class gelating reagents mesomorphic materials. few these compounds have tendency form macromolecule-like aggregates through...

This paper describes the synthesis of wedge-shaped, charged amphiphilic molecules bearing an ammonium group at tip that are able to organize negatively luminophores through ionic self-assembly (ISA) process into discotic liquid-crystalline materials. For this purpose, two luminescent molecules, 4,4-difluoro-1,3,5,7,8-pentamethyl-2,6-disulfonato-4-bora-3a,4a-diaza-s-indacene (sulfobodipy(2-)) and tetrakis(4-sulfonatophenyl)porphyrin (TPPS(4-)), were tested. The neutral complexes obtained ISA...

A series of modular mesogenic salts based on the combination anionic 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (F-BODIPY) 2,6-disulfonate dyes and trialkoxybenzyl-functionalised imidazolium cations has been designed synthesised. Each salt contains a rigid dianionic BODIPY core associated with two functionalised by 1,2,3-trialkoxybenzyl (alkyl=n-C(8), n-C(12) or n-C(16)) units or, in one case, trialkylgallate (3,4,5-trialkoxybenzoate) unit which 3,5-dialkyl groups are terminated...

Abstract A strip of a liquid crystal elastomer doped with near‐infrared dye one side crosslinked monodomain and the other polydomain along thickness behaves like multifunctional photoactuator without need for support. flat two ends fixed on substrate surface forms moving bump under laser scanning, which can be used as light‐fueled conveyor to transport an object. Cutting off scanning free makes soft flexible millimeter‐scale crawler that not only move straight climb inclined surface, but...

The development of efficient hydrogen production technologies is fundamental for replacing fossil-fuel-based energies. As such, electrocatalysts derived from Earth-abundant metal complexes are appealing, and interesting performances have typically been disclosed under acidic conditions in organic solvents. However, their applicability relevant pH-neutral has underexplored. Herein, we demonstrate that nonionic, dimeric cobalt-dithiolene supported on a multiwalled carbon nanotube...

B8amide is a large molecule based on derivative of the BODIPY laser dye PM567. Both molecules exhibit highly stable radical ions and similar absorbance photoluminescence spectra. For B8amide, redox potentials are E° = −1.40 0.96 V vs SCE for reduction oxidation, respectively, PM567, they −1.37 0.94 SCE. The fluorescence λmax 526 537 nm, 516 533 nm Whereas ECL spectrum PM567 consists single peak with 555 possesses peaks at 551 741 nm. includes shoulder that extends to even longer wavelengths....

The remarkable photothermal properties of pegylated nickel-bis(dithiolene) complexes in water can induce cell death under laser irradiation the near infrared (NIR) region.

A new class of luminescent dyes incorporates aromatic residues attached by an ethynyl link to the boron center a subphthalocyanine (SubPc; see picture). Efficient energy transfer from energy-donor subunits SubPc produces very large Stokes shifts, while luminescence quantum yields are maintained. An acid-triggered "switching on" emission occurs when dibutylamino fragment is axially coordinated SubPc. Detailed facts importance specialist readers published as "Supporting Information". Such...

Using a regioselective strategy for nucleophilic aromatic substitution on polyfluoropyridines, nonacoordinating precursor was designed that is adequately suited complexation of lanthanide cations. Further functionalizations afforded numerous applications near-IR emission, two-photon absorption spectroscopy, or the formation luminescent gels.

We have designed and synthesised a series of modular, mesogenic complexes based on anthracene-2,6-disulfonate trialkoxybenzyl-functionalised imidazolium cations. Each complex contains central, rigid, dianionic anthracene core two flexible monocations bearing paraffin chains anchored rings. Anthracene-2,6-disulfonate can be crystallised with various simple alkylammonium ions and, in the case +N(CH3)2(C16H33)2, crystal structure determination has shown that long paraffinic are intercalated...

In the presence of fluoride anions, [LnL(H2 O)]+ complexes, based on coordination a lanthanide (Ln) cation into cavity C2v symmetrical cyclen-based ligand (L), self-assemble in water to form [(LnL)2 F]+ dimers. The crystal structures Yb hydrated monomer and fluorinated dimer are reported analyzed unravel impact cumulative effect weak hydrogen bonding aromatic stacking interactions supramolecular assembly. assembly is stable over broad range pH 3-8. A combination equimolar amounts Eu Tb...

A new series of nickel N,N'-dialkylimidazolidine-2,4,5-trithione complexes ([Ni(R2timdt)2]) carrying linear or branched carbon chains (R = n-C4H9, n-C8H17, n-C12H25, n-C16H33, 2-ethylhexyl, 2-butyloctyl, phytanyl) have been obtained through an original synthetic pathway starting from easily available imidazolium-based ionic liquids. The chemical structures these were confirmed by NMR and high-resolution mass spectroscopies as well X-ray analysis performed on single crystals. strongly absorb...

Self-assembling features, chiroptical activity, and spin filtering properties are reported for 2,15- 4,13-disubstituted [6]helicenes decorated in their periphery with 3,4,5-tris(dodecyloxy)-N-(4-ethynylphenyl)benzamide moieties. The weak non-covalent interaction between these units conditions the corresponding circularly polarized luminescence polarization. self-assembly is overall [6]helicene derivatives that, despite formation of H-bonding interactions amide groups present peripheral...