Zobrazeno 1 - 10 of 352 pro vyhledávání: '"Stefan Spange"'
1
Akademický článek
Polarity of Organic Solvent/Water Mixtures Measured with Reichardt’s B30 and Related Solvatochromic Probes—A Critical Review
Autor: Stefan Spange
Publikováno v: Liquids, Vol 4, Iss 1, Pp 191-230 (2024)
The UV/Vis absorption energies (νmax) of different solvatochromic probes measured in co-solvent/water mixtures are re-analyzed as a function of the average molar concentration (Nav) of the solvent composition compared to the use of the mole fraction
Externí odkaz: https://doaj.org/article/2851950d222848efae64908691493a5a
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2
Elektronická kniha
Twin Polymerization : New Strategy for Hybrid Materials Synthesis
Autor: Stefan Spange, Michael Mehring
Twin polymerization is a novel approach where two distinct polymers are produced from a single source monomer, thus being an excellent tool for the synthesis of hybrid materials. The author introduces the principles of various twin polymerization pro
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3
Akademický článek
The Global Polarity of Alcoholic Solvents and Water – Importance of the Collectively Acting Factors Density, Refractive Index and Hydrogen Bonding Forces
Autor: Prof. Dr. Stefan Spange, Dr. Nadine Weiß, Dr. Thomas G. Mayerhöfer
Publikováno v: ChemistryOpen, Vol 11, Iss 10, Pp n/a-n/a (2022)
Abstract The DHBD quantity represents the hydroxyl group density of alcoholic solvents or water. DHBD is purely physically defined by the product of molar concentration of the solvent (N) and the factor Σn=n×f which reflects the number n and positi
Externí odkaz: https://doaj.org/article/6a009d1392c34f1bbfc5f8817a5773d7
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5
Surface-mediated twin polymerisation of 2,2′-spirobi[4H-1,3,2-benzodioxasiline] on multi-walled carbon nanotubes, polyacrylonitrile particles and copper particles
Autor: Lysann Kaßner, Thomas Ebert, Patricia Godermajer, Volodymyr Dzhagan, Dietrich R. T. Zahn, Frank Simon, Doreen Dentel, Christoph Tegenkamp, Stefan Spange, Michael Mehring
Publikováno v: Materials Advances. 3:3925-3937
Application of twin polymerization by a base-catalysed, surface-mediated coating procedure is shown on different templates. Post-polymerization treatment leads to microporous shells on MWCNTs, N-doped carbon particles, and copper particles.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::28a8165884c2077dc75839bb6ec74244
https://doi.org/10.1039/d2ma00152g
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8
Reversible and Stable Hemiaminal Hydrogels from Polyvinylamine and Highly Reactive and Selective Bis(N-acylpiperidone)s
Autor: Christian Fengler, Manfred Wilhelm, Andreas Seifert, Stefan Spange, Florian Taubert, Michael Sommer, Tina Uhlig, Christoph Hamers, Lysann Kaßner, Hans-Joachim Hähnle
Publikováno v: ACS Macro Letters. 10:389-394
Water-soluble bis(N-acylpiperidone)s with aldehyde-like reactivity are reported to react rapidly with polyvinylamine at room temperature, providing unprecedented clean reaction products. Unlike mos...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1532230d975e886fd2ed0c3f0b57a514
https://doi.org/10.1021/acsmacrolett.0c00904
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9
The Negative Solvatochromism of Reichardt's Dye B30 - A Complementary Study
Autor: Stefan Spange, Thomas G. Mayerhöfer
Publikováno v: Chemphyschem : a European journal of chemical physics and physical chemistry. 23(14)
The UV/Vis spectra of a hypothetical negative solvatochromic dye in a solvent are theoretically calculated assuming the classical damped harmonic oscillator model and the Lorentz-Lorenz relation. For the simulations, the oscillator strength of the so
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57788b593b21e33ceea899c5ea29cddb
https://pubmed.ncbi.nlm.nih.gov/35579664
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