Interaction of OH− with xylan and its hydrated complexes: structures and molecular dynamics study using elongation method

Verfasser / Beitragende:
[Lin Jin, Kai Liu, Yuriko Aoki]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Molecular Modeling, 21/5(2015-05-01), 1-10
Format:
Artikel (online)
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024 7 0 |a 10.1007/s00894-015-2666-5  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00894-015-2666-5 
245 0 0 |a Interaction of OH− with xylan and its hydrated complexes: structures and molecular dynamics study using elongation method  |h [Elektronische Daten]  |c [Lin Jin, Kai Liu, Yuriko Aoki] 
520 3 |a The interaction of OH− group with (xylan)12 and its hydrated complexes were theoretically studied using elongation optimization (ELG-OPT) method and elongation ab initio molecular dynamics simulation (ELG-MD) method. OH− group could abstract a H-atom from the terminal xylan ring to form a complex (xylan)12 −-H2O without any energy barrier. One and two extra water molecules were also added to the same terminal xylan ring. All the geometry optimization results obtained using elongation method were compared with conventional calculation results, and it suggested that ELG-OPT method worked well for (xylan)12, (xylan)12-OH−, and its hydrated complexes. Moreover 10ps ab initio molecular dynamics simulations were performed for complexes (xylan)12 −-H2O, (xylan)12 −-2H2O, and (xylan)12 −-3H2O at 300K, 500K, and 700K. (xylan)12 −-H2O complex was stable at room temperature. However H2O molecule which was formed by OH− group could move at 500K. At 700K the H-abstract reaction reversed. Adding an extra water molecule only accelerated the water transfer reaction, but no more chemical reactions occurred, and the transfer time decreased when the temperature increased. The complex (xylan)12 −-H2O became very stable when adding two extra water molecules even at high temperature, and it indicated that two extra water molecules stabilized the complex (xylan)12 −-H2O. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Alkali  |2 nationallicence 
690 7 |a Elongation (ELG) method  |2 nationallicence 
690 7 |a Hydrated complex  |2 nationallicence 
690 7 |a Molecular dynamics simulations  |2 nationallicence 
690 7 |a Xylan  |2 nationallicence 
700 1 |a Jin  |D Lin  |u Department of Material Sciences, Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-Park, 816-8580, Fukuoka, Japan  |4 aut 
700 1 |a Liu  |D Kai  |u Department of Material Sciences, Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-Park, 816-8580, Fukuoka, Japan  |4 aut 
700 1 |a Aoki  |D Yuriko  |u Department of Material Sciences, Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-Park, 816-8580, Fukuoka, Japan  |4 aut 
773 0 |t Journal of Molecular Modeling  |d Springer Berlin Heidelberg  |g 21/5(2015-05-01), 1-10  |x 1610-2940  |q 21:5<1  |1 2015  |2 21  |o 894 
856 4 0 |u https://doi.org/10.1007/s00894-015-2666-5  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00894-015-2666-5  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Jin  |D Lin  |u Department of Material Sciences, Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-Park, 816-8580, Fukuoka, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Liu  |D Kai  |u Department of Material Sciences, Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-Park, 816-8580, Fukuoka, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Aoki  |D Yuriko  |u Department of Material Sciences, Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-Park, 816-8580, Fukuoka, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Molecular Modeling  |d Springer Berlin Heidelberg  |g 21/5(2015-05-01), 1-10  |x 1610-2940  |q 21:5<1  |1 2015  |2 21  |o 894