TY - JOUR
T1 - Controlled supramolecular structure of guanosine monophosphate in the interlayer space of layered double hydroxide
AU - Gwak, Gyeong Hyeon
AU - Kocsis, Istvan
AU - Legrand, Yves Marie
AU - Barboiu, Mihail
AU - Oh, Jae Min
N1 - Publisher Copyright:
© 2016 Gwak et al.
PY - 2016
Y1 - 2016
N2 - Guanosine monophosphates (GMPs) were intercalated into the interlayer space of layered double hydroxides (LDHs) and the molecular arrangement of GMP was controlled in LDHs. The intercalation conditions such as GMP/LDH molar ratio and reaction temperature were systematically adjusted. When the GMP/LDH molar ratio was 1:2, which corresponds to the charge balance between positive LDH sheets and GMP anions, GMP molecules were well-intercalated to LDH. At high temperature (100 and 80 °C), a single GMP molecule existed separately in the LDH interlayer. On the other hand, at lower temperature (20, 40 and 60 °C), GMPs tended to form ribbon-type supramolecular assemblies. Differential scanning calorimetry showed that the ribbon-type GMP assembly had an intermolecular interaction energy of 101 kJ/mol, which corresponds to a double hydrogen bond between guanosine molecules. Once stabilized, the interlayer GMP orientations, single molecular and ribbon phase, were successfully converted to the other phase by adjusting the external environment by stoichiometry or temperature control.
AB - Guanosine monophosphates (GMPs) were intercalated into the interlayer space of layered double hydroxides (LDHs) and the molecular arrangement of GMP was controlled in LDHs. The intercalation conditions such as GMP/LDH molar ratio and reaction temperature were systematically adjusted. When the GMP/LDH molar ratio was 1:2, which corresponds to the charge balance between positive LDH sheets and GMP anions, GMP molecules were well-intercalated to LDH. At high temperature (100 and 80 °C), a single GMP molecule existed separately in the LDH interlayer. On the other hand, at lower temperature (20, 40 and 60 °C), GMPs tended to form ribbon-type supramolecular assemblies. Differential scanning calorimetry showed that the ribbon-type GMP assembly had an intermolecular interaction energy of 101 kJ/mol, which corresponds to a double hydrogen bond between guanosine molecules. Once stabilized, the interlayer GMP orientations, single molecular and ribbon phase, were successfully converted to the other phase by adjusting the external environment by stoichiometry or temperature control.
KW - Guanosine monophosphate
KW - Hydrogen bond
KW - Layered double hydroxide
KW - Ribbon structure
KW - Supramolecular assembly
UR - http://www.scopus.com/inward/record.url?scp=85015272070&partnerID=8YFLogxK
U2 - 10.3762/bjnano.7.184
DO - 10.3762/bjnano.7.184
M3 - Article
AN - SCOPUS:85015272070
SN - 2190-4286
VL - 7
SP - 1928
EP - 1935
JO - Beilstein Journal of Nanotechnology
JF - Beilstein Journal of Nanotechnology
IS - 1
ER -