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Showing 25 to 36 of 500 entries
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Property tuning in charge-transfer chromophores by systematic modulation of the spacer between donor and acceptor.

Chemistry (Weinheim an der Bergstrasse, Germany)

Bures F, Schweizer WB, May JC, Boudon C, Gisselbrecht JP, Gross M, Biaggio I, Diederich F.
PMID: 17304602
Chemistry. 2007;13(19):5378-87. doi: 10.1002/chem.200601735.

A series of donor-acceptor chromophores was prepared in which the spacer separating 4-dimethylanilino (DMA) donor and C(CN)(2) acceptor moieties is systematically varied. All of the new push-pull systems, except 4 b, are thermally stable molecules. In series a, the...

Adsorption and dynamics of long-range interacting fullerenes in a flexible, two-dimensional, nanoporous porphyrin network.

Chemphyschem : a European journal of chemical physics and physical chemistry

Kiebele A, Bonifazi D, Cheng F, Stöhr M, Diederich F, Jung T, Spillmann H.
PMID: 16789044
Chemphyschem. 2006 Jul 17;7(7):1462-70. doi: 10.1002/cphc.200600186.

Herein, a detailed investigation of the adsorption and dynamics of C60 and C70 fullerenes hosted in a self-assembled, two-dimensional, nanoporous porphyrin network on a solid Ag surface is presented. Time-resolved scanning tunneling microscopy (STM) studies of these supramolecular systems...

Synthesis of 1,3-dioxo-hexahydropyrido[1,2-c][1,3]diazepine carboxylates, a new bicyclic skeleton formed by ring expansion-RCM methodology.

Chemical communications (Cambridge, England)

Dieltiens N, Claeys DD, Allaert B, Verpoort F, Stevens CV.
PMID: 16136256
Chem Commun (Camb). 2005 Sep 21;(35):4477-8. doi: 10.1039/b508663a. Epub 2005 Aug 04.

A short and elegant synthetic pathway was developed for the synthesis of 1,3-dioxo-hexahydropyrido[1,2-c][1,3]diazepine carboxylates, a new 1,3-diazepan-2,4-dione containing bicyclic moiety, starting from pyroglutamate esters.

Modification of supramolecular binding motifs induced by substrate registry: formation of self-assembled macrocycles and chain-like patterns.

Chemistry (Weinheim an der Bergstrasse, Germany)

Fendt LA, Stöhr M, Wintjes N, Enache M, Jung TA, Diederich F.
PMID: 19760724
Chemistry. 2009 Oct 26;15(42):11139-50. doi: 10.1002/chem.200901502.

The self-assembly properties of two Zn(II) porphyrin isomers on Cu(111) are studied at different coverage by means of scanning tunneling microscopy (STM). Both isomers are substituted in their meso-positions by two voluminous 3,5-di(tert-butyl)phenyl and two rod-like 4'-cyanobiphenyl groups, respectively....

Chemopreventive potential of curcumin in prostate cancer.

Genes & nutrition

Teiten MH, Gaascht F, Eifes S, Dicato M, Diederich M.
PMID: 19806380
Genes Nutr. 2010 Mar;5(1):61-74. doi: 10.1007/s12263-009-0152-3. Epub 2009 Oct 06.

The long latency and high incidence of prostate carcinogenesis provides the opportunity to intervene with chemoprevention in order to prevent or eradicate prostate malignancies. We present here an overview of the chemopreventive potential of curcumin (diferuloylmethane), a well-known natural...

Axial control of thermal coagulation using a multi-element interstitial ultrasound applicator with internal cooling.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

Deardorff DL, Diederich CJ.
PMID: 18238528
IEEE Trans Ultrason Ferroelectr Freq Control. 2000;47(1):170-8. doi: 10.1109/58.818759.

A multi-element, direct-coupled ultrasound (US) applicator with internal water cooling was investigated for axial control of interstitial thermal coagulation. A prototype implantable applicator was constructed with a linear array of three tubular PZT ultrasound transducers (each 2.5 mm OD,...

Changes in infants faecal characteristics and microbiota by inulin supplementation.

Journal of clinical biochemistry and nutrition

K W Yap W, Mohamed S, Husni Jamal M, Diederick M, A Manap Y.
PMID: 19015750
J Clin Biochem Nutr. 2008 Nov;43(3):159-66. doi: 10.3164/jcbn.2008055. Epub 2008 Oct 31.

The effects of inulin on the microbial composition and faecal characteristics in 36 healthy, formula-fed infants (average age 7.7 months) given 3 different daily dosages of native inulin (0.75 g/day, 1.00 g/day, and 1.25 g/day) were studied. At all...

The optimal time window of visual-auditory integration: a reaction time analysis.

Frontiers in integrative neuroscience

Colonius H, Diederich A.
PMID: 20485476
Front Integr Neurosci. 2010 May 11;4:11. doi: 10.3389/fnint.2010.00011. eCollection 2010.

THE SPATIOTEMPORAL WINDOW OF INTEGRATION HAS BECOME A WIDELY ACCEPTED CONCEPT IN MULTISENSORY RESEARCH: crossmodal information falling within this window is highly likely to be integrated, whereas information falling outside is not. Here we further probe this concept in...

Resonant tunnelling through a C(60) molecular junction in a liquid environment.

Nanotechnology

Grüter L, Cheng F, Heikkilä TT, Teresa González M, Diederich F, Schönenberger C, Calame M.
PMID: 20817987
Nanotechnology. 2005 Oct;16(10):2143-8. doi: 10.1088/0957-4484/16/10/029. Epub 2005 Aug 09.

We present electronic transport measurements through thiolated C(60) molecules in a liquid environment. The molecules were placed within a mechanically controllable break junction using a single anchoring group per molecule. On varying the electrode separation of the C(60)-modified junctions,...

A new class of organic donor-acceptor molecules with large third-order optical nonlinearities.

Chemical communications (Cambridge, England)

Michinobu T, May JC, Lim JH, Boudon C, Gisselbrecht JP, Seiler P, Gross M, Biaggio I, Diederich F.
PMID: 15685321
Chem Commun (Camb). 2005 Feb 14;(6):737-9. doi: 10.1039/b417393g. Epub 2005 Jan 17.

Donor-acceptor molecules with 4-(dimethylamino)phenyl donor and 1,1,4,4-tetracyanobuta-1,3-diene acceptor moieties are readily prepared by short, high-yielding routes. The quite small chromophores are characterised by X-ray crystallography and feature intense intramolecular charge-transfer bands, substantial quinoid character in the donor rings, reversible...

Optical stability of axially chiral push-pull-substituted buta-1,3-dienes: effect of a single methyl group on the C60 surface.

Angewandte Chemie (International ed. in English)

Yamada M, Rivera-Fuentes P, Schweizer WB, Diederich F.
PMID: 20544905
Angew Chem Int Ed Engl. 2010 May 03;49(20):3532-5. doi: 10.1002/anie.200906853.

No abstract available.

Visualizing the product of a formal cycloaddition of 7,7,8,8-tetracyano-p-quinodimethane (TCNQ) to an acetylene-appended porphyrin by scanning tunneling microscopy on Au(111).

Chemistry (Weinheim an der Bergstrasse, Germany)

Fesser P, Iacovita C, Wäckerlin C, Vijayaraghavan S, Ballav N, Howes K, Gisselbrecht JP, Crobu M, Boudon C, Stöhr M, Jung TA, Diederich F.
PMID: 21484902
Chemistry. 2011 May 02;17(19):5246-50. doi: 10.1002/chem.201100733. Epub 2011 Apr 11.

No abstract available.

Showing 25 to 36 of 500 entries