TY - JOUR
T1 - Tuning metal-carboxylate coordination in crystalline metal-organic frameworks through surfactant media
AU - Gao, Junkuo
AU - Ye, Kaiqi
AU - He, Mi
AU - Xiong, Wei Wei
AU - Cao, Wenfang
AU - Lee, Zhi Yi
AU - Wang, Yue
AU - Wu, Tom
AU - Huo, Fengwei
AU - Liu, Xiaogang
AU - Zhang, Qichun
N1 - Funding Information:
Q.Z. acknowledges the financial support from AcRF Tier 1 ( RG 18/09 ) and Tier 2 ( ARC 20/12 ) from MOE , CREATE program (Nanomaterials for Energy and Water Management) from NRF , and New Initiative Fund from NTU, Singapore .
PY - 2013
Y1 - 2013
N2 - Although it has been widely demonstrated that surfactants can efficiently control the size, shape and surface properties of micro/nanocrystals of metal-organic frameworks (MOFs) due to the strong interactions between surfactants and crystal facets of MOFs, the use of surfactants as reaction media to grow MOF single crystals is unprecedented. In addition, compared with ionic liquids, surfactants are much cheaper and can have multifunctional properties such as acidic, basic, neutral, cationic, anionic, or even block. These factors strongly motivate us to develop a new synthetic strategy: growing crystalline MOFs in surfactants. In this report, eight new two-dimensional (2D) or three-dimensional (3D) MOFs have been successfully synthesized in an industrially-abundant and environmentally-friendly surfactant: polyethylene glycol-200 (PEG-200). Eight different coordination modes of carboxylates, ranging from monodentate η1 mode to tetra-donor coordination μ3-η1:η2:η1 mode, have been founded in our research. The magnetic properties of Co-based MOFs were investigated and MOF NTU-Z6b showed a phase transition with a Curie temperature (Tc) at 5 K. Our strategy of growing crystalline MOFs in surfactant could offer exciting opportunities for preparing novel MOFs with diverse structures and interesting properties.
AB - Although it has been widely demonstrated that surfactants can efficiently control the size, shape and surface properties of micro/nanocrystals of metal-organic frameworks (MOFs) due to the strong interactions between surfactants and crystal facets of MOFs, the use of surfactants as reaction media to grow MOF single crystals is unprecedented. In addition, compared with ionic liquids, surfactants are much cheaper and can have multifunctional properties such as acidic, basic, neutral, cationic, anionic, or even block. These factors strongly motivate us to develop a new synthetic strategy: growing crystalline MOFs in surfactants. In this report, eight new two-dimensional (2D) or three-dimensional (3D) MOFs have been successfully synthesized in an industrially-abundant and environmentally-friendly surfactant: polyethylene glycol-200 (PEG-200). Eight different coordination modes of carboxylates, ranging from monodentate η1 mode to tetra-donor coordination μ3-η1:η2:η1 mode, have been founded in our research. The magnetic properties of Co-based MOFs were investigated and MOF NTU-Z6b showed a phase transition with a Curie temperature (Tc) at 5 K. Our strategy of growing crystalline MOFs in surfactant could offer exciting opportunities for preparing novel MOFs with diverse structures and interesting properties.
KW - Coordination
KW - Crystalline
KW - Magnetic property
KW - Metal-organic frameworks
KW - Structure
KW - Surfactant-thermal condition
UR - http://www.scopus.com/inward/record.url?scp=84881484593&partnerID=8YFLogxK
U2 - 10.1016/j.jssc.2013.07.031
DO - 10.1016/j.jssc.2013.07.031
M3 - Article
AN - SCOPUS:84881484593
SN - 0022-4596
VL - 206
SP - 27
EP - 31
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
ER -