Results 31 to 40 of about 147,412 (306)
Revealing electronic state-switching at conical intersections in alkyl iodides by ultrafast XUV transient absorption spectroscopy [PDF]
, 2020 The reaction trajectories of photoexcited molecules may involve transitions through conical intersections, which are ubiquitous in nature but challenging to characterize.
Stephen R. Leone +21 more
core +1 more source
A transient absorption study of allophycocyanin
Journal of Chemical Sciences, 2002 Transient dynamics of allophycocyanin trimers and monomers are observed by using the pump-probe, transient absorption technique. The origin of spectral components of the transient absorption spectra is discussed in terms of both kinetics and spectroscopy.
Y. J. Shiu +5 more
openaire +2 more sources
Compressed supercontinuum probe for transient absorption microscopy [PDF]
Optics Letters, 2018 Here, we combine three optical advancements to transient absorption microscopy in order to access the photodynamics in systems requiring stringent spatial and temporal resolution criteria. First, a broadband visible probe is generated by a commercial photonic crystal fiber.
Kevin Higgins, Tessa R. Calhoun
openaire +2 more sources
Ultraviolet transient absorption, transient grating and photon echo studies of aqueous tryptophan [PDF]
, 2013 We compare UV transient grating (TG) experiments of aqueous tryptophan with transient absorption (TA) and fluorescence up-conversion measurements. The TG and TA signals show a bi-exponential rise with sub-ps and ps time constants, which are consistent ...
Chergui, Majed +6 more
core +1 more source
Advanced Science, 2023 2D lead halide perovskites (LHPs) show strong excitonic and spin‐orbit coupling effects, generating a facile spin injection. Besides, they possess a polaron character due to the soft crystal lattice, which can prolong the spin lifetime, making them ...
Mu‐Sen Song +5 more
doaj +1 more source
Influence of Al2O3 Overlayers on Intermolecular Interactions between Metal Oxide Bound Molecules
Molecules, 2023 Intermolecular interactions on inorganic substrates can have a critical impact on the electrochemical and photophysical properties of the materials and subsequent performance in hybrid electronics.
Erica S. Knorr +8 more
doaj +1 more source
CAVITY ENHANCED ULTRAFAST TRANSIENT ABSORPTION SPECTROSCOPY [PDF]
Proceedings of the 70th International Symposium on Molecular Spectroscopy, 2015 We present a new technique using a frequency comb laser and optical cavities for performing ultrafast transient absorption spectroscopy with improved sensitivity. Resonantly enhancing the probe pulses, we demonstrate a sensitivity of $Δ$OD $ = 1 \times 10^{-9}/\sqrt{\mbox{Hz}}$ for averaging times as long as 30 s per delay point ($Δ$OD$_{min} = 2 ...
Reber, Melanie A. R. +2 more
openaire +2 more sources
The Other Dimension—Tuning Hole Extraction via Nanorod Width
Nanomaterials, 2022 Solar-to-hydrogen generation is a promising approach to generate clean and renewable fuel. Nanohybrid structures such as CdSe@CdS-Pt nanorods were found favorable for this task (attaining 100% photon-to-hydrogen production efficiency); yet the rods ...
Tal Rosner +6 more
doaj +1 more source
Probing Competing Relaxation Pathways in Malonaldehyde with Transient X-Ray Absorption Spectroscopy
, 2020 Excited-state intramolecular hydrogen transfer (ESIHT) is a fundamental reaction relevant to chemistry and biology. Malonaldehyde is the simplest example of ESIHT, yet only little is known experimentally about its excited-state dynamics.
Andreas, Dreuw +4 more
core +1 more source
Attosecond transient absorption of a continuum threshold
, 2020 The laser-field-modified dipole response of the first ionization threshold of helium is studied by means of attosecond transient absorption spectroscopy.
Blaettermann, Alexander +17 more
core +1 more source