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Showing 1 to 12 of 230 entries
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Solvatochromic rotaxane molecular shuttles.

Chemical communications (Cambridge, England)

Günbaş DD, Zalewski L, Brouwer AM.
PMID: 21431115
Chem Commun (Camb). 2011 May 07;47(17):4977-9. doi: 10.1039/c0cc05755j. Epub 2011 Mar 22.

A strongly fluorescent bistable rotaxane is described in which the relative position of the macrocyclic ring with respect to a solvatochromic fluorophore gives a strong response in the spectral domain.

Photoinduction of fast, reversible translational motion in a hydrogen-bonded molecular shuttle.

Science (New York, N.Y.)

Brouwer AM, Frochot C, Gatti FG, Leigh DA, Mottier L, Paolucci F, Roffia S, Wurpel GW.
PMID: 11251112
Science. 2001 Mar 16;291(5511):2124-8. doi: 10.1126/science.1057886. Epub 2001 Feb 22.

A rotaxane is described in which a macrocycle moves reversibly between two hydrogen-bonding stations after a nanosecond laser pulse. Observation of transient changes in the optical absorption spectrum after photoexcitation allows direct quantitative monitoring of the submolecular translational process....

Combined solid state NMR and X-ray diffraction investigation of the local structure of the five-coordinate silicon in fluoride-containing as-synthesized STF zeolite.

Journal of the American Chemical Society

Fyfe CA, Brouwer DH, Lewis AR, Villaescusa LA, Morris RE.
PMID: 12083931
J Am Chem Soc. 2002 Jul 03;124(26):7770-8. doi: 10.1021/ja012558s.

The local structure of the [SiO(4/2)F]- unit in fluoride-containing as-synthesized STF zeolite has been experimentally determined by a combination of solid-state NMR and microcrystal X-ray diffraction to be very close to trigonal bipyramidal. Because the fluoride ions are disordered...

Infrared study of intercomponent interactions in a switchable hydrogen-bonded rotaxane.

Chemistry (Weinheim an der Bergstrasse, Germany)

Jagesar DC, Hartl F, Buma WJ, Brouwer AM.
PMID: 18064626
Chemistry. 2008;14(6):1935-46. doi: 10.1002/chem.200701531.

The macrocycle in rotaxane 1 is preferentially hydrogen bonded to the succinamide station in the neutral form, but can be moved to the naphthalimide station by one-electron reduction of the latter. The hydrogen bonding between the amide NH groups...

(35)Cl solid-state NMR of halide ionic liquids at ultrahigh fields.

The journal of physical chemistry. A

Gordon PG, Brouwer DH, Ripmeester JA.
PMID: 19007195
J Phys Chem A. 2008 Dec 11;112(49):12527-9. doi: 10.1021/jp808524h.

This Letter describes recent work investigating the solid-state NMR spectra of (35)Cl nuclei in an assortment of ionic liquids under static and MAS conditions at field strengths of 9.4 and 21.1 T. At high field it was possible to...

Symmetry-based 29Si dipolar recoupling magic angle spinning NMR spectroscopy: a new method for investigating three-dimensional structures of zeolite frameworks.

Journal of the American Chemical Society

Brouwer DH, Kristiansen PE, Fyfe CA, Levitt MH.
PMID: 15643876
J Am Chem Soc. 2005 Jan 19;127(2):542-3. doi: 10.1021/ja043228l.

A new 29Si solid-state MAS NMR experiment is described for investigating the framework structures of pure silica zeolites. The symmetry-based homonuclear dipolar recoupling sequence SR26411 has been incorporated into a two-dimensional NMR experiment to probe the Si-O-Si bonding connectivities...

On the synergistic catalytic properties of bimetallic mesoporous materials containing aluminum and zirconium: the Prins cyclisation of citronellal.

Chemistry (Weinheim an der Bergstrasse, Germany)

Telalović S, Ramanathan A, Ng JF, Maheswari R, Kwakernaak C, Soulimani F, Brouwer HC, Chuah GK, Weckhuysen BM, Hanefeld U.
PMID: 21259348
Chemistry. 2011 Feb 11;17(7):2077-88. doi: 10.1002/chem.201002909. Epub 2011 Jan 21.

Bimetallic three-dimensional amorphous mesoporous materials, Al-Zr-TUD-1 materials, were synthesised by using a surfactant-free, one-pot procedure employing triethanolamine (TEA) as a complexing reagent. The amount of aluminium and zirconium was varied in order to study the effect of these metals...

Perceiving blocks of emotional pictures and sounds: effects on physiological variables.

Frontiers in human neuroscience

Brouwer AM, van Wouwe N, Mühl C, van Erp J, Toet A.
PMID: 23801957
Front Hum Neurosci. 2013 Jun 21;7:295. doi: 10.3389/fnhum.2013.00295. eCollection 2013.

Most studies on physiological effects of emotion-inducing images and sounds examine stimulus locked variables reflecting a state of at most a few seconds. We here aimed to induce longer lasting emotional states using blocks of repetitive visual, auditory, and...

Halfshade analyzer.

Applied optics

Brouwer GF, Podzimek O.
PMID: 20197955
Appl Opt. 1978 Apr 15;17(8):1163-4. doi: 10.1364/AO.17.001163.

No abstract available.

Investigator-initiated randomized controlled trials in children with epilepsy: Mission impossible?.

Epilepsia open

Weijenberg A, Callenbach PMC, Brouwer OF.
PMID: 29750211
Epilepsia Open. 2016 Nov 14;2(1):32-38. doi: 10.1002/epi4.12024. eCollection 2017 Mar.

OBJECTIVE: In children many antiepileptic drugs (AEDs) are prescribed off-label due to a lack of well-designed randomized controlled trials (RCTs). We conducted a multicenter RCT in the Netherlands to compare levetiracetam and valproic acid as monotherapy in children with...

Transient two-dimensional vibrational spectroscopy of an operating molecular machine.

Nature communications

Panman MR, van Dijk CN, Huerta-Viga A, Sanders HJ, Bakker BH, Leigh DA, Brouwer AM, Buma WJ, Woutersen S.
PMID: 29263325
Nat Commun. 2017 Dec 20;8(1):2206. doi: 10.1038/s41467-017-02278-6.

Synthetic molecular machines are promising building blocks for future nanoscopic devices. However, the details of their mechanical behaviour are in many cases still largely unknown. A deeper understanding of mechanics at the molecular level is essential for the design...

Algorithm-Based Screening May Improve Patient Selection for the Subcutaneous Implantable Defibrillator.

JACC. Clinical electrophysiology

Brouwer TF, Kooiman KM, Olde Nordkamp LR, van Halm VP, Knops RE.
PMID: 29759581
JACC Clin Electrophysiol. 2016 Oct;2(5):605-614. doi: 10.1016/j.jacep.2016.02.011. Epub 2016 May 18.

OBJECTIVES: The study sought to describe the concept of algorithm-based screening with an external subcutaneous implantable cardioverter-defibrillator (S-ICD) to evaluate sensing using the rhythm discrimination algorithm of the device.BACKGROUND: In a proportion of patients, screening for S-ICD therapy with...

Showing 1 to 12 of 230 entries