Results 71 to 80 of about 654,387 (333)

Ultrafast infrared spectroscopy with single molecular ions

New Journal of Physics, 2019
We propose a method to investigate the vibrational dynamics of single polyatomic molecular ions confined in a Paul trap. Quantum logic techniques are employed to detect the recoil of single photon absorption events on the molecule via a co-trapped atomic
Philipp Schindler
doaj   +1 more source

Probing Chiral Nanoparticles and Surfaces by Infrared Spectroscopy

CHIMIA, 2006
Chiral metal surfaces and nanoparticles have the potential to be used for the selective production, the resolution and the detection of enantiomers of a chiral compound, which renders them highly attractive in view of the tremendous consequences
Cyrille Gautier, Marco Bieri, Igor Dolamic, Silvia Angeloni, Julien Boudon, Thomas Bürgi   +5 more
doaj   +1 more source

Synthesis and Bioconjugation of Gold Nanoparticles as Potential Molecular Probes for Light‐Based Imaging Techniques [PDF]

International Journal of Biomedical Imaging, 2007
We have synthesized and characterized gold nanoparticles (spheres and rods) with optical extinction bands within the “optical imaging window.” The intense plasmon resonant driven absorption and scattering peaks of these nanoparticles make them suitable as contrast agents for optical imaging techniques.
Rayavarapu, Raja Gopal, Petersen, Wilma, Ungureanu, Constantin, Post, Janine N., van Leeuwen, Ton G., Manohar, Srirang   +5 more
openaire   +6 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Electronic structures and optical characteristics of fluorescent pyrazinoquinoxaline assemblies and Au interfaces

Scientific Reports, 2021
Understanding the excitonic processes at the interfaces of fluorescent π-conjugated molecules and metal electrodes is important for both fundamental studies and emerging applications. Adsorption configurations of molecules on metal surfaces significantly
Soyeong Kwon, Dong Yeun Jeong, Weon-Sik Chae, Kyungju Noh, P. Devi, Luciano Colazzo, Youngmin You, Taeyoung Choi, Dong-Wook Kim   +8 more
doaj   +1 more source

Quantum probe hyperpolarisation of molecular nuclear spins [PDF]

, 2017
The hyperpolarisation of nuclear spins within target molecules is a critical and complex challenge in magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) spectroscopy.
Broadway, David A., Hall, Liam T., Hollenberg, Lloyd C. L., Simpson, David A., Stacey, Alastair, Tetienne, Jean-Philippe, Wood, James D. A.   +6 more
core   +3 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Label-Free Target Discovery Strategy for Natural Active Products

Biomolecules
The growing interest in harnessing natural compounds for health and medical applications underscores the necessity for innovative approaches to decipher their mechanisms of action.
Lei Shan, Yujia Chen, Xiuling Cao, Xuejiao Jin, Beidong Liu   +4 more
doaj   +1 more source

Direct absorption imaging of ultracold polar molecules

, 2010
We demonstrate a scheme for direct absorption imaging of an ultracold ground-state polar molecular gas near quantum degeneracy. A challenge in imaging molecules is the lack of closed optical cycling transitions.
B. Neyenhuis, D. S. Jin, D. Wang, G. Pupillo, J. Ye, K.-K. Ni, M. H. G. de Miranda, S. Ospelkaus, W. Ketterle   +8 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source