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Showing 1 to 12 of 489 entries
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Quantum Interference in the Vibrational Relaxation of the O-H Stretch Overtone of Liquid H2O.

The journal of physical chemistry. A

van der Post ST, Woutersen S, Bakker HJ.
PMID: 27070075
J Phys Chem A. 2016 May 26;120(20):3441-9. doi: 10.1021/acs.jpca.5b11735. Epub 2016 May 11.

Using femtosecond two-color infrared pump-probe spectroscopy, we study the vibrational relaxation of the O-H stretch vibrations of liquid H2O after excitation of the overtone transition. The overtone transition has its maximum at 6900 cm(-1) (1.45 μm), which is a...

Evidence for cooperative vibrational relaxation of the NH-, OH-, and OD-stretching modes in hydrogen-bonded liquids using infrared pump-probe spectroscopy.

Physical review letters

Shaw DJ, Panman MR, Woutersen S.
PMID: 20366125
Phys Rev Lett. 2009 Nov 27;103(22):227401. doi: 10.1103/PhysRevLett.103.227401. Epub 2009 Nov 25.

Vibrational energy relaxation of the NH-, OH-, and OD-stretching modes in hydrogen-bonded liquids has been investigated by means of infrared pump-probe spectroscopy. The relaxation rates have been determined both in neat liquids and in isotopic mixtures with systematically varied...

Vibrational relaxation and coupling of two OH-stretch oscillators with an intramolecular hydrogen bond.

The Journal of chemical physics

Lock AJ, Gilijamse JJ, Woutersen S, Bakker HJ.
PMID: 15268374
J Chem Phys. 2004 Feb 01;120(5):2351-8. doi: 10.1063/1.1637576.

We studied the vibrational dynamics of the OH-stretch oscillators of an alcohol with two vicinal OH groups using femtosecond midinfrared pump-probe spectroscopy. The absorption spectrum of pinacol (2,3-dimethyl-2,3-butanediol) in CDCl3 shows two OH-stretch peaks belonging to hydrogen bonded and...

Cell proliferation and apoptosis in the exocrine pancreas of azaserine-treated rats and N-nitrosobis(2-oxopropyl)amine-treated hamsters.

International journal of oncology

Appel M, Visser C, Woutersen R.
PMID: 21544479
Int J Oncol. 1996 Jun;8(6):1171-8. doi: 10.3892/ijo.8.6.1171.

Altered cell proliferation is an important characteristic of neoplastic development, hence the quantitation of cell growth in normal and (pre)neoplastic pancreatic tissue will provide useful information on the process (and modulation) of pancreatic tumour promotion in experimental animals. Cell...

Protein Denaturation with Guanidinium: A 2D-IR Study.

The journal of physical chemistry letters

Huerta-Viga A, Woutersen S.
PMID: 24163724
J Phys Chem Lett. 2013 Oct 17;4(20):3397-3401. doi: 10.1021/jz401754b. Epub 2013 Sep 23.

Guanidinium (Gdm

Exchanging conformations of a hydroformylation catalyst structurally characterized using two-dimensional vibrational spectroscopy.

Inorganic chemistry

Panman MR, Vos J, Bocokić V, Bellini R, de Bruin B, Reek JH, Woutersen S.
PMID: 24256078
Inorg Chem. 2013 Dec 16;52(24):14294-8. doi: 10.1021/ic402254q. Epub 2013 Nov 20.

Catalytic transition-metal complexes often occur in several conformations that exchange rapidly (

Solvent-Exposed Salt Bridges Influence the Kinetics of α-Helix Folding and Unfolding.

The journal of physical chemistry letters

Meuzelaar H, Tros M, Huerta-Viga A, van Dijk CN, Vreede J, Woutersen S.
PMID: 24634715
J Phys Chem Lett. 2014 Mar 06;5(5):900-904. doi: 10.1021/jz500029a. Epub 2014 Feb 14.

Salt bridges are known to play an essential role in the thermodynamic stability of the folded conformation of many proteins, but their influence on the

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...

A liquid-liquid transition in supercooled aqueous solution related to the HDA-LDA transition.

Science (New York, N.Y.)

Woutersen S, Ensing B, Hilbers M, Zhao Z, Angell CA.
PMID: 29590040
Science. 2018 Mar 09;359(6380):1127-1131. doi: 10.1126/science.aao7049.

Simulations and theory suggest that the thermodynamic anomalies of water may be related to a phase transition between two supercooled liquid states, but so far this phase transition has not been observed experimentally because of preemptive ice crystallization. We...

Photoinduced Pedalo-Type Motion in an Azodicarboxamide-Based Molecular Switch.

Angewandte Chemie (International ed. in English)

Amirjalayer S, Martinez-Cuezva A, Berna J, Woutersen S, Buma WJ.
PMID: 29139183
Angew Chem Int Ed Engl. 2018 Feb 12;57(7):1792-1796. doi: 10.1002/anie.201709666. Epub 2017 Dec 07.

Well-defined structural changes of molecular units that can be triggered by light are crucial for the development of photoactive functional materials. Herein, we report on a novel switch that has azodicarboxamide as its photo-triggerable element. Time-resolved UV-pump/IR probe spectroscopy...

Can the study of self-assembly in solution lead to a good model for the nucleation pathway? The case of tolfenamic acid.

Chemical science

Du W, Cruz-Cabeza AJ, Woutersen S, Davey RJ, Yin Q.
PMID: 29511513
Chem Sci. 2015 Jun 01;6(6):3515-3524. doi: 10.1039/c5sc00522a. Epub 2015 Apr 17.

To further our understanding of the role of solution chemistry in directing nucleation processes new experimental and computational data are presented on the solution and crystallisation chemistry of tolfenamic acid (TA), a benchmark polymorphic compound. With these, and previously...

Efficacy of a preparation of algae interspaced bentonite as a feed additive for all animal species.

EFSA journal. European Food Safety Authority

, Bampidis V, Azimonti G, Bastos ML, Christensen H, Dusemund B, Kouba M, Kos Durjava M, López-Alonso M, López Puente S, Marcon F, Mayo B, Pechová A, Petkova M, Ramos F, Sanz Y, Villa RE, Woutersen R, Chesson A, Gropp J, Martelli G, Renshaw D, López-Gálvez G, Mantovani A.
PMID: 32626228
EFSA J. 2019 Feb 15;17(2):e05604. doi: 10.2903/j.efsa.2019.5604. eCollection 2019 Feb.

Following a request from the European Commission, the EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP Panel) was asked to deliver a scientific opinion on the efficacy of a preparation of algae interspaced bentonite...

Showing 1 to 12 of 489 entries