Articles with "polymer molecular" as a keyword



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Effect of polymer molecular weight on the physical properties and CO2/N2 separation of pyrrolidinium-based poly(ionic liquid) membranes

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Published in 2018 at "Journal of Membrane Science"

DOI: 10.1016/j.memsci.2017.12.019

Abstract: Abstract Aiming at investigating the effect of the polymer molecular weight (Mw) on the physical and gas permeation properties of poly(ionic liquid)-ionic liquid (PIL–IL) composites, this work focuses on membranes based on variable Mw pyrrolidinium-PILs… read more here.

Keywords: weight physical; ionic liquid; liquid; polymer molecular ... See more keywords
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Polymer Molecular Weights via DOSY NMR.

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Published in 2023 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.2c05531

Abstract: Diffusion-ordered spectroscopy (DOSY) 1H nuclear magnetic resonance (1H NMR) has become a powerful tool to characterize the molecular weights of polymers. Compared to common characterization techniques, such as size exclusion chromatography (SEC), DOSY is faster,… read more here.

Keywords: via dosy; polymer molecular; molecular weights; weights via ... See more keywords
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New Stable and Fast Ring-Polymer Molecular Dynamics for Calculating Bimolecular Rate Coefficients with an Example of OH + CH4.

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Published in 2022 at "Journal of chemical theory and computation"

DOI: 10.1021/acs.jctc.2c00522

Abstract: The accurate and efficient calculation of the rate coefficients of chemical reactions is a key issue in the research of chemical dynamics. In this work, by applying the dimension-free ultrastable Cayley propagator, the thermal rate… read more here.

Keywords: polymer molecular; molecular dynamics; ring polymer; rate ... See more keywords
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How do polymer molecular weights influence the luminescence properties of metal-containing polymers? A case study of platinum(II) complex end-functionalized polymers

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Published in 2018 at "Journal of Materials Chemistry C"

DOI: 10.1039/c8tc04478c

Abstract: Poly (ethylene glycol)s (PEGs) terminated with platinum(II) complexes show dramatically blue-shifted emission bands and sharply increased luminescence quantum yields with increasing molecular weights of PEGs. Such dramatic changes stem from the structural transitions from lamellar… read more here.

Keywords: molecular weights; platinum; polymer molecular; influence luminescence ... See more keywords
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Ring Polymer Molecular Dynamics with Electronic Transitions.

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Published in 2023 at "Physical review letters"

DOI: 10.1103/physrevlett.130.166401

Abstract: Full quantum dynamics of molecules and materials is of fundamental importance, which requires a faithful description of simultaneous quantum motions of the electron and nuclei. A new scheme is developed for nonadiabatic simulations of coupled… read more here.

Keywords: quantum; dynamics electronic; polymer molecular; molecular dynamics ... See more keywords