Dyeing together: An efficient panchromatic dye-sensitized solar cell is constructed by using a “molecular cocktail” composed of an organic dye and zinc phthalocyanine (see picture). The use multiple, complementary dyes (cosensitization) important step towards cells that operate across the full spectrum irradiation. Supporting information for this article available on WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z703106_s.pdf or from author. Please note: publisher not responsible...

Preparation of [Cu(NN)(PP)]+ derivatives has been systematically investigated starting from two libraries phenanthroline (NN) and bis-phosphine (PP) ligands, namely, (A) 1,10-phenanthroline (phen), neocuproine (2,9-dimethyl-1,10-phenanthroline, dmp), bathophenanthroline (4,7-diphenyl-1,10-phenanthroline, Bphen), 2,9-diphenethyl-1,10-phenanthroline (dpep), 2,9-diphenyl-1,10-phenanthroline (dpp); (B) bis(diphenylphosphino)methane (dppm), 1,2-bis(diphenylphosphino)ethane (dppe),...

The effect of chenodeoxycholic acid as a coadsorbent on TiO 2 nanocrystalline solar cells incorporating phthalocyanine sensitizers was studied under various conditions. Adding onto nanoparticles not only reduces the adsorption but also prevents sensitizer aggregation, leading to different photovoltaic performance. inspection IPCE and absorption spectra showed that load is strongly dependent molar concentration coadsorbent. open circuit voltage with increases due enhanced electron lifetime in...

Bridge the gap: Rigid π-conjugated bridges such as ethynyl spacers, are effective for connecting phthalocyanine π system to conduction band of TiO2. A series zinc photosensitizers with carboxyethynyl anchoring groups have been synthesized. Solar cells sensitized pictured compound exhibit record efficiencies 5.5 % and 6.1 under 100 (1 sun irradiation) 9.5 mW cm−2, respectively. Detailed facts importance specialist readers published "Supporting Information". Such documents peer-reviewed, but...

Abstract Let it shine! The impact of the anchoring group on photovoltaic performance by a series phthalocyanine sensitisers (see figure) has been demonstrated. magnified image A unsymmetrical zinc phthalocyanines bearing an carboxylic function linked to ring through different spacers were designed for dye‐sensitised solar cells (DSSC). modification spacer allows not only variable distance between dye and nanocrystalline TiO 2 , but also distinct orientation semiconductor surface. data show...

Exfoliation of graphite was achieved using a zinc phthalocyanine oligomer that is also an electron donor. The resulting functionalized graphene material investigated by Raman and spectroscopy trialed in photoelectrochemical cell.

Farbenfroh: Eine effiziente panchromatische farbstoffsensibilisierte Solarzelle wurde mithilfe eines "molekularen Cocktails" aus einem organischen Farbstoff und Zinkphthalocyanin erzeugt (siehe Bild). Die Verwendung von mehreren komplementären Farbstoffen (Cosensibilisierung) ist ein wichtiger Schritt hin zur Entwicklung Solarzellen, die über das gesamte Sonnenspektrum operieren. Supporting information for this article is available on the WWW under...

Several zinc-based phthalocyanines have been synthesized and used in Dye-Sensitized Solar Cells (DSSC). The results compared with the standard TT1 phthalocyanine, which shows good light-to-energy conversion efficiencies comparison other IR sensitizers DSSC. We show herein that anchoring moiety is critical for both achieving high injection yields slow back electron transfer dynamics affect overall device efficiency. Moreover, based on these results, we a new phthalocyanine superior...

Abstract Stable photoactive organogels were successfully prepared by a two‐step sequence involving: 1) formation of thermoreversible use combination low‐molecular‐weight organogelators (LMOGs) and Zn II –phthalocyanine (Zn –Pc) moieties containing complementary organogelator structures, 2) strength enhancement the gels in situ cross‐linking with aid Cu I ‐catalysed azide–alkyne [3+2] cycloadditions (CuAACs). The optimum click reaction was carried out between flexible C6 aliphatic diazide...

By using a combination of experimental and theoretical tools, we elucidate unique physical characteristics supramolecular triarylamine nanowires (STANWs), their packed structure, as well the entire kinetics associated radical-controlled polymerization process. AFM, small-angle X-ray scattering, all-atomic computer modeling reveal two-columnar "snowflake" internal structure fibers involving π-stacking triarylamines with alternating handedness. The process triarylammonium radicals formation...

The synthesis and photophysical properties of several fullerene-phthalocyanine-porphyrin triads (1-3) pentads (4-6) are described. three photoactive moieties were covalently connected in an one-step through 1,3-dipolar cycloaddition to C(60) the corresponding azomethine ylides generated situ by condensation reaction a substituted N-porphyrinylmethylglycine derivative appropriated formyl phthalocyanine or diformyl derivative, respectively. ZnP-C(60)-ZnPc (3), (ZnP)(2)-ZnPc-(C(60))(2) (6),...

A family of triarylamine-fullerene conjugates has been synthesized and shown to self-assemble upon light stimulation in chlorinated solvents. This light-induced process primarily involves excitation triarylamine derivatives, which then oxidize stack with their neutral counterparts form charge transfer complexes the p-conducting channels, while fullerenes are consequently enforced coaxial n-conducting columnar arrangements. These supramolecular heterojunctions can be organized over very long...

A logic gate based on a bistable [c2] daisy chain rotaxane decorated with lateral triarylamine units is described, giving rise to an INHIBIT function using proton concentration and light as inputs, producing dual color change supramolecular self-assembly outputs.

The size and shape of nanoparticles are prominent importance for their biological activities application as smart drug delivery systems. Thus, synthetic designs allowing divergent synthesis nanoscale materials with controlled size, morphology, surface chemistry currently highly desirable, but they remain a major challenge. Herein, we report simple method the creation supramolecular diversity from structurally related diacetylenic-based glycolipids. We have found that neoglycolipids an amide...

In this work we have developed a strategy to immobilize functional groups such as ZnPc onto the surface of SWNT without, however, needs covalent functionalization, using substituted PPV-oligomers (1–4) with different electronic character. The complementary use series microscopies and spectroscopies is central, especially gather comprehensive picture mutual interactions. Importantly, only 1, bearing electron-withdrawing CN substituents, interacts tightly affording stable finely dispersed...

Starre π-konjugierte Brücken wie die Ethinylgruppe sind geeignet, um das π-System eines Phthalocyanins effektiv an Leitungsband von TiO2 zu koppeln. Eine Reihe Zinkphthalocyanin-Photosensibilisatoren mit Carboxyethinyl-Ankergruppen wurde synthetisiert. Solarzellen, der gezeigten Verbindung sensibilisiert wurden, zeigten Wirkungsgrade 5.5 % und 6.1 unter 100 (1 sun) bzw. 9.5 mW cm−2.

Treatment of 2-diphenylphosphino-6-methylpyridine (dpPyMe) with Cu(CH3CN)4BF4 afforded the stable dinuclear Cu(I) complex [Cu2(μ-dpPyMe)3(CH3CN)](BF4)2. This compound is a weak emitter in solution, however remarkably high emission quantum yield (46%) has been found rigid matrix at room temperature.

In this paper, the ability to disperse single wall carbon nanotubes (SWNT) of several different-nature poly(p-phenylene vinylene) (PPV) oligomers having pendant zinc phthalocyanines (ZnPc) has been investigated. Based on quenching ZnPc and SWNT fluorescence in supramolecular assemblies, it shown that parameters such as p/n-type character oligomer, size distance between moiety conjugated backbone play an important role strength interactions. Important results suggest n-type well certain...

Herein, we describe the first report on a new class of disk-shaped and quite monodisperse water-soluble nanomaterials that named glyconanosomes (GNS). GNSs were obtained by sliding out cylindrical structures formed upon self-organization photopolymerization glycolipid 1 single-walled carbon nanotube (SWCNT) sidewalls. present sheltered hydrophobic inner cavity carbonated tails, surrounded PEG lactose moieties. The amphiphilic character allows water solubility insoluble cargos such as...

A shotgun-like approach allowing the synthesis of functional, biocompatible glyconanoring-coated single wall carbon nanotubes with a shish-kebab topology and lectin specificity is reported.

The synthesis of two poly(p-phenylenevinylene) oligomers (oPPV) laterally substituted by phthalocyanines (Pc) is described. preparation Pc-based 1 and 2 was accomplished means Knoevenagel Wadsworth–Horner–Emmons reactions, respectively. Diformylphthalocyanine 3 employed as a monomer in these thus providing functionalised conjugated upon reaction with the corresponding co-monomers, 4 5. Photophysical electrochemical experiments have been carried out both oligomeric derivatives, revealing...

Die Exfoliation von Graphit gelang mithilfe eines Zink-Phthalocyanin-Oligomers, das gleichzeitig elektronische Wechselwirkungen aufbaut. Das resultierende funktionalisierte Graphenmaterial wurde Raman- und Elektronenspektroskopie untersucht versuchsweise in einer photoelektrochemischen Zelle eingesetzt. 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 submitted by...

Background: Bacterial resistance to antibiotics is one of the biggest challenges facing medicine today. Anti-adhesive therapy, using inhibitors bacterial adhesion epithelial cells, first stages infection, a promising approximation in this area. The size, shape, number sugar and their placement are variables that have be taken into account order develop multivalent systems able inhibit based on sugar-lectin interaction. Materials methods: In present work we report modular approach for...