Results 51 to 60 of about 139,399 (305)

Photoswitchable Conductive Metal–Organic Frameworks

open access: yesAdvanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu   +5 more
wiley   +1 more source

A new study of an old sink of sulfur in hot molecular cores: the sulfur residue [PDF]

open access: yes, 2015
Sulfur appears to be depleted by an order of magnitude or more from its elemental abundance in star-forming regions. In the last few years, numerous observations and experiments have been performed in order to to understand the reasons behind this ...
Kanuchova, Z.   +5 more
core   +2 more sources

Rational Fine‐Tuning of MOF Pore Metrics: Enhanced SO2 Capture and Sensing with Optimal Multi‐Site Interactions

open access: yesAdvanced Functional Materials, EarlyView.
A pore tuning strategy to amplify the multi‐site MOF‐SO2 interactions is proposed to achieve an enhanced trace SO2 capture and chemiresistive sensing in highly stable isostructural DMOFs by annelating benzene rings. This work provides a facile strategy to achieve tailor‐made stable MOF materials for specific multifunctional applications.
Shanghua Xing   +9 more
wiley   +1 more source

Pitaya-Like Carbon Nanofiber Sulfur Composites as Promising Cathode Materials for High-Performance Li-S Batteries

open access: yesInternational Journal of Electrochemical Science, 2018
First, carbon nanofibers were prepared by electrospinning. Then, a CN/S composite was prepared by melting elemental sulfur via high-temperature heat treatment.
Yanhua Wang, Jianying Tong, Kefeng Xie
doaj   +1 more source

PHOTOCHEMISTRY IN TERRESTRIAL EXOPLANET ATMOSPHERES. II. H₂S AND SO₂ PHOTOCHEMISTRY IN ANOXIC ATMOSPHERES [PDF]

open access: yes, 2012
Sulfur gases are common components in the volcanic and biological emission on Earth, and are expected to be important input gases for atmospheres on terrestrial exoplanets.
Batalha   +36 more
core   +2 more sources

The Structures of Elemental Sulfur [PDF]

open access: yes, 1976
Publisher Summary Elemental sulphur is commonly known and widely used. Its properties are already described in the Old Testament and in Homer's Odyssey. It exists in several different forms. Thermodynamically stable sulphur forms deep yellow, nonodorous orthorhombic crystals with a space group Fddd-Dh224, containing 16 molecules— that is, 128 atoms ...
openaire   +2 more sources

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

open access: yesAdvanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey   +12 more
wiley   +1 more source

Membrane Assisted Simultaneous Extraction and Derivatization with Triphenylphosphine of Elemental Sulfur in Arabian Crude Samples by Gas Chromatography/Mass Spectrometry

open access: yesJournal of Chemistry, 2015
Determination of trace level elemental sulfur from crude oil samples is a tedious task. Recently, several gas chromatographic methods were reported in which selective triphenylphosphine derivatization of sulfur was used to form triphenylphosphine sulfide.
Ibrahim Al-Zahrani   +4 more
doaj   +1 more source

Year-round trace gas measurements in the central Arctic during the MOSAiC expedition

open access: yesScientific Data, 2022
Measurement(s) atmospheric ozone • atmospheric carbon dioxide • atmospheric methane • atmospheric carbon monoxide • atmospheric nitrous oxide • atmospheric dimethylsulfide • atmospheric sulfur dioxide • atmospheric gaseous elemental mercury • volatile ...
Hélène Angot   +22 more
doaj   +1 more source

Intermediate Element Abundances in Galaxy Clusters

open access: yes, 2003
We present the average abundances of the intermediate elements obtained by performing a stacked analysis of all the galaxy clusters in the archive of the X-ray telescope ASCA.
Arnaud M.   +15 more
core   +1 more source

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