Results 71 to 80 of about 701,199 (312)
Barrier to Rotation about Sulfur-Sulfur Bonds in Homocyclic Sulfur Molecules [PDF]
Zeitschrift für Naturforschung B, 1983 Abstract It is shown that the distances (d) of the 19 longest bonds in 9 homocyclic sulfur rings of type Sn (n = 6-20) depend on the torsional angles (τ) which vary between 0° and 140°. The function d = f(τ) is smallest for τ = 90-100° and largest for τ = 0°; the corresponding bond distance variation amounts to 13 pm or 6%. The height of
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Advanced Functional Materials, EarlyView.PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu +14 more
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Organic sulfur was integral to the Archean sulfur cycle [PDF]
Nature Communications, 2019 AbstractThe chemistry of the Early Earth is widely inferred from the elemental and isotopic compositions of sulfidic sedimentary rocks, which are presumed to have formed globally through the reduction of seawater sulfate or locally from hydrothermally supplied sulfide.
Mojtaba Fakhraee, Sergei Katsev
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Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.This study reveals that higher shell S coordination can effectively modulate the spin state of FeN4 site via long‐range electronic interactions, giving rise to the oriented generation of singlet oxygen from peroxymonosulfate activation. Abstract Precise manipulation of coordination structure of single‐atom sites and establishment of schematic ...
Liang Zhang +8 more
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Novel sulfur and selenium containing bis-α-amino acids from 4-hydroxyproline [PDF]
, 2010 The synthesis of new substituted prolines carrying at C-4 a second α-amino acid residue is reported. The amino acid, l-cysteine or l-selenocysteine, is linked to the proline ring through the sulfur or the selenium atom, respectively.
CAPUTO, ROMUALDO +4 more
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Preparing sulfur nanoparticles and determining their effect on the photodegradation of polycarbonates [PDF]
مجلة جامعة الانبار للعلوم الصرفةThis study involved the preparation of sulfur nanoparticles using the extract of Ziziphus-spina leaves and examined their effect on the photodegradation of polycarbonate membranes with a thickness of (60±5) microns, after adding various ...
rand hassan, Hameed Ali, Muthanaa Sirhan
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Photoswitchable Conductive Metal–Organic Frameworks
Advanced 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
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Adsorptive Desulfurization of Gas Oil Over Cu2O/AC, ZnO/AC and NiO/AC Adsorbents [PDF]
Engineering and Technology Journal, 2017 In the present work, Iraqi gasoil fraction was treated by using three prepared metal-impregnated activated carbon adsorbents for sulfur removal using adsorptive desulfurization method.
S.H. Ammar, S.A. Jaffar
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, 2007 Sulfur is a necessary dietary component that can be toxic at excessive concentrations. Animal bodies are about 0.15% sulfur by weight ([NRC, 1988] and [NRC, 1998]). Sulfur is incorporated into many essential molecules, including biotin, chondroitin sulfate, cartilage mucopolysaccharides, co-enzyme A, fibrinogen, glutathione, heparin, lipoic acid ...
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Advanced Functional Materials, EarlyView.This review explores Zn anode challenges in aqueous ZIBs, including dendrites, corrosion, and side reactions, and discusses strategies for improvement through Zn anode, electrolyte, and separator modifications to enhance stability and efficiency. Abstract Aqueous rechargeable zinc‐ion batteries (ZIBs) are emerging as promising candidates for next ...
Pragati A. Shinde +5 more
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