Tunable Electrical Conductivity and Magnetic Property of the Two Dimensional Metal Organic Framework [Cu(TPyP)Cu2(O2CCH3)4].
The coordination chemistry between copper acetate [Cu2(OAc)4] and 5,10,15,20-tetra-4-pyridyl-21H,23H-porphine (porphyrin, H2TPyP) is found to give rise to either a 2D metal-organic framework (MOF) [Cu(TPyP)Cu2(O2CCH3)4] or a 3D MOF [Cu(TPyP)CuCl2]·2.5TCE·7H2O], depending on the choice of solvent. The 2D MOF can be made into a film, which was doped with 7,7,8,8-tetracyanoquinodimethane (TCNQ), and the electrical conductivity of the thin film was increased by 3 orders of magnitude with respect to that of the undoped Cu-MOF. The formation of a charge-transfer complex between TCNQ and the 2D Cu-MOF also imparts stronger paramagnetic properties than for the undoped MOF.
SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University , Shenzhen 518060, China.|Department of Chemistry, National University of Singapore , 3 Science Drive 3, Singapore 117543, Singapore.
Ananya
A
Sengupta
SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University , Shenzhen 518060, China.|Department of Chemistry, National University of Singapore , 3 Science Drive 3, Singapore 117543, Singapore.
Subhadeep
S
Datta
SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University , Shenzhen 518060, China.
Chenliang
C
Su
Department of Materials Science & Engineering, National University of Singapore , Singapore 119260, Singapore.
Tun Seng
TS
Herng
Department of Materials Science & Engineering, National University of Singapore , Singapore 119260, Singapore.
Jun
J
Ding
Department of Chemistry, National University of Singapore , 3 Science Drive 3, Singapore 117543, Singapore.
Jagadese J
JJ
Vittal
Department of Chemistry, National University of Singapore , 3 Science Drive 3, Singapore 117543, Singapore.|Centre for Advanced 2D Materials (CA2DM) and Graphene Research Centre, National University of Singapore , 6 Science Drive 2, Singapore 117546, Singapore.
Kian Ping
KP
Loh
charge-transfer complex; conductivity; coordination chemistry; doping; metal−organic framework; thin film