Results 21 to 30 of about 858,458 (356)

Spectroscopic Analyses of the Biofuels-Critical Phytochemical Coniferyl Alcohol and Its Enzyme-Catalyzed Oxidation Products

open access: yesMolecules, 2009
Lignin composition (monolignol types of coniferyl, sinapyl or p-coumaryl alcohol) is causally related to biomass recalcitrance. We describe multiwavelength (220, 228, 240, 250, 260, 290, 295, 300, 310 or 320 nm) absorption spectroscopy of coniferyl ...
Anup Kumar Singh   +3 more
doaj   +1 more source

Electronic Absorption Spectroscopy

open access: yes, 2021
Absorption spectroscopy in the ultraviolet, visible and near-infrared (UV-VIS-NIR) wavelength ranges is one of the oldest and most often used characterization methods in coordination chemistry. This overview illustrates examples ranging from four-coordinate and six-coordinate complexes of d-block elements to modern lanthanide complexes.
Reber, Christian   +3 more
openaire   +2 more sources

Interpretation of X-ray Absorption Spectroscopy in the Presence of Surface Hybridization [PDF]

open access: yes, 2017
X-ray absorption spectroscopy yields direct access to the electronic and geometric structure of hybrid inorganic-organic interfaces formed upon adsorption of complex molecules at metal surfaces.
Diller, Katharina   +3 more
core   +2 more sources

Anion Binding Studies on Receptors Derived from the Indolo[2,3-a]carbazole Scaffold Having Different Binding Cavity Sizes

open access: yesSensors, 2014
The indolo[2,3-a]carbazole scaffold is a fused polyheteroaromatic system bearing two NH groups which suitably converge as hydrogen bond donor sites for the recognition of anions. A simple derivatisation of the indolocarbazole system at positions 1 and 10
Guzmán Sánchez   +3 more
doaj   +1 more source

The application of synchrotron radiation and in particular X-ray absorption spectroscopy to matrix isolated species [PDF]

open access: yes, 2014
This review provides comprehensive coverage of the application of X-ray absorption spectroscopy (XAS, XAFS, EXAFS, and XANES) to matrix isolated species.
Young, Nigel A.
core   +1 more source

Fluoride Anion Recognition by a Multifunctional Urea Derivative: An Experimental and Theoretical Study

open access: yesSensors, 2016
In this work we demonstrate the ability of a multifaceted N,N′-disubstituted urea to selectively recognize fluoride anion (F−) among other halides. This additional function is now added to its already reported organocatalytic and organogelator properties.
Jana Schiller   +5 more
doaj   +1 more source

Ultrasensitive Absorption Spectroscopy

open access: yesPhysics, 2011
Absorption spectroscopy limited only by quantum noise has been demonstrated over a broad frequency range using laser frequency combs.
Mandon, J.B., Harren, F.
openaire   +4 more sources

Indirect measurement of infrared absorption spectrum through thermal emission of meta-cavity array [PDF]

open access: yesOptics Express 31, 39832 (2023), 2023
Controlling thermal emission is essential for various infrared spectroscopy applications. Metasurfaces can be utilized to control multiple degrees of freedom of thermal emission, enabling the compact thermal emission materials and devices. Infrared spectroscopy such as FTIR (Fourier transform infrared spectroscopy), usually requires external infrared ...
arxiv   +1 more source

Synthesis and properties of novel star-shaped oligofluorene conjugated systems with BODIPY cores

open access: yesBeilstein Journal of Organic Chemistry, 2014
Star-shaped conjugated systems with varying oligofluorene arm length and substitution patterns of the central BODIPY core have been synthesised, leading to two families of compounds, T-B1–T-B4 and Y-B1–Y-B4, with T- and Y-shaped motifs, respectively ...
Clara Orofino-Pena   +11 more
doaj   +1 more source

From Chitosan to Chitin: Bio‐Inspired Thin Films for Passive Daytime Radiative Cooling

open access: yesAdvanced Science, 2023
Passive radiative daytime cooling is an emerging technology contributing to carbon‐neutral heat management. Optically engineered materials with distinct absorption and emission properties in the solar and mid‐infrared range are at the heart of this ...
Tobias Lauster   +6 more
doaj   +1 more source

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