Concept

Phenyl group

Related publications (45)

Electrochemically modified single-walled carbon nanotubes

Klaus Kern, Marko Burghard, Kannan Balasubramanian, Ralf Thomas Weitz, Eduardo Jian Hua Lee, Tilman Assmus

We report on the properties of electrochemically modified SWCNTs bearing a functional organic layer and a low density of noble metal nanoparticles, respectively. First, a novel approach to nanoscale pH sensors is demonstrated which involves the gentle modi ...

2007

Influence of π-Conjugation Units in Organic Dyes for Dye-Sensitized Solar Cells

Ulf Anders Hagfeldt, Peng Qin

Two org. dyes with the general structure donor-conjugated chain-acceptor (D-π-A) were studied as sensitizers for nanocryst. TiO2 solar cells. The electron donor and acceptor groups were pyrrolidine and cyano acrylic acid, resp. The conjugated chain of 2-cy ...

2007

Influence of Ionic Liquids Bearing Functional Groups in Dye-Sensitized Solar Cells

Michael Graetzel, Paul Joseph Dyson, Shaik Mohammed Zakeeruddin, Zhaofu Fei, Dongbin Zhao

Ionic liquids containing the nitrile and vinyl functional groups attached to imidazolium cations combined with various anions, e.g., iodide, bis[(trifluoromethyl)sulfonyl]imide ([TFSI]-), or dicyanamide ([N(CN)2]-), have been prepared and characterized. Th ...

2006

The alpha(2)-polymorph of salicylideneaniline

Gervais Chapuis, Philip Pattison

N-Salicylideneaniline (SA), C13H11NO, belongs to the large family of aromatic Schiff bases. It is of particular importance owing to its reversible photoreactivity. SA forms two photochromic polymorphs, both with two non-coplanar benzene rings. In addition, ...

2005

Switchable reactivity: the site-selective functionalization of trifluoromethyl-substituted pyrazoles

Kurt Schenk

Modern organometallic methods enable the regioflexible conversion of simple heterocyclic starting materials into families of isomers and congeners. Depending on the choice of the reagent, 1-methyl-5-(trifluoromethyl)pyrazole undergoes deprotonation and sub ...

2002

The acidity of chloro-substituted benzenes: a comparison of gas phase, Ab initio, and kinetic data

Fabrice Cottet

The deprotonation energies of benzene, chlorobenzene, all di-, tri-, tetrachlorobenzenes, and pentachlorobenzene have been detd. in the gas phase using a Fourier transform ion cyclotron resonance mass spectrometer. The values measured differ only slightly, ...

2001

The Role of p-p Stacking Interactions in Square Planar Palladium Complexes. Combined Quantum Mechanics/Molecular Mechanics QM/MM Studies

Ursula Röthlisberger

D. functional (DFT) studies and hybrid QM/MM-DFT calcns. demonstrate the importance of p-p stacking interactions in detg. the structural features of two exemplary d8 palladium complexes, PdBr(p-NCC6H4)({S}-MeO-Biphep), 1, and PdBr(C6F5)({S}-MeO-Biphep), 2. ...

2001

Heterometallic Bromo-bridged Complexes with a Re(CO)3 Fragment

Kay Severin

Heterobimetallic complexes where half-sandwich complexes of ruthenium(II), rhodium(III) and iridium(III) are connected by three bromo-bridges to Re(CO)3 have been prepd. from metathesis reactions of [RuBr(m-Br)(h6-arene)]2 (arene = C6H6, C6H3Et3-1,3,5 or p ...

2000

The structure, conformation and orientational order of fluorinated liquid crystals determined from carbon-13 NMR spectroscopy

David Lyndon Emsley

The C-13-{H-1} NMR spectra of two monofluorinated nematic liquid crystals, I35 and I52, have been obtained and analysed to yield sets of dipolar couplings, D-iF, from each carbon in the molecule to the fluorine nucleus. The couplings involving carbons in t ...

TAYLOR & FRANCIS LTD1999

Determination of 4-Hydroxy-2,5-dimethyl-3(2H)-furanone and 2(or 5)-Ethyl-4-hydroxy-5(or 2)-methyl-3(2H)-furanone in Pentose Sugar-Based Maillard Model Systems by Isotope Dilution Assays

Imre Blank

The formation of 4-hydroxy-2,5-dimethyl-3(2H)-furanone (HDMF) and 2(or 5)-ethyl-4-hydroxy-5(or 2)-methyl-3(2H)-furanone (EHMF) from pentose sugars was studied in Maillard model systems. The amts. generated at 90 DegC for 1 h were detd. by isotope diln. ass ...

1997

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