Results 91 to 100 of about 3,557,904 (289)

Ultrafast E to Z photoisomerization of chiral biomimetic molecular switches

open access: yes, 2014
Transient absorption spectroscopy on chiral biomimetic molecular switches reveals a critical and novel influence of methyl substitutions on the photoreaction speed and on the observation of vibrational coherence in both isomerization ...
Fusi, S.   +11 more
core   +2 more sources

Design and synthesis of a photoswitchable guanidine catalyst

open access: yesBeilstein Journal of Organic Chemistry, 2012
A novel design as well as a straight-forward synthesis for a photoswitchable guanidine catalyst is reported. Intense studies of the photochromic properties demonstrated the reversible switchability of its photosensitive azobenzene moiety. Its activity in
Philipp Viehmann, Stefan Hecht
doaj   +1 more source

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

open access: yesMolecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Phosphoinositide switches in cell physiology - From molecular mechanisms to disease

open access: yes
Phosphoinositides are amphipathic lipid molecules derived from phosphatidylinositol that represent low abundance components of biological membranes. Rather than serving as mere structural elements of lipid bilayers, they represent molecular switches for ...
Lolicato, Fabio   +3 more
core   +1 more source

Oxidative stress: an overview of past research and future insights

open access: yesAll Life
‘Oxidative stress' (OS) refers to the deviations in redox biology inside biological systems. This term has been used to illustrate the imbalance between oxidants and antioxidants, which has been a subject of extensive research.
Aaser M. Abdelazim, Mosleh M. Abomughaid
doaj   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

open access: yesMolecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary   +1 more
wiley   +1 more source

Azobenzenes as Light-Controlled Molecular Electronic Switches in Nanoscale Metal−Molecule−Metal Junctions

open access: yes, 2016
Azobenzenes as Light-Controlled Molecular Electronic Switches in Nanoscale Metal−Molecule−Metal ...
Giuseppina Pace (405493)   +5 more
core   +1 more source

Electrospray ionization: an efficient approach to deposit polymetallic molecular switches onto gold surfaces

open access: yes, 2020
International audienceElectrospray ionization (EI) deposition is proven efficient in obtaining monolayers of a polymetallic charge transfer complex onto gold surfaces. The molecule's integrity is monitored by PM-IRRAS and XPS.
Landoulsi, Jessem   +4 more
core   +1 more source

Bis(Dicarbollide) Complexes of Transition Metals: How Substituents in Dicarbollide Ligands Affect the Geometry and Properties of the Complexes

open access: yesMolecules
The interaction between different types of substituents in dicarbollide ligands and their influence on the stabilization of various rotational conformers (rotamers) of transition metal bis(dicarbollide) complexes [3,3′-M(1,2-C2B9H11)2]− are considered ...
Igor B. Sivaev
doaj   +1 more source

Intramolecular bridges formed by photoswitchable click amino acids

open access: yesBeilstein Journal of Organic Chemistry, 2012
Photoswitchable click amino acids (PSCaa) are amino acids bearing a side chain consisting of a photoswitchable unit elongated with a functional group that allows for a specific click reaction, such as an alkene that can react with the thiol group of a ...
Christian Hoppmann   +2 more
doaj   +1 more source

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