Back to Search
Start Over
Increased Electric Conductivity upon I2 Uptake and Gas Sorption in a Pillar-Layered Metal-Organic Framework
- Source :
- ChemPlusChem. 82:716-720
- Publication Year :
- 2017
- Publisher :
- Wiley, 2017.
-
Abstract
- The use of molecular iodine to tune the electrical conductivity in metal-organic frameworks is an effective but seldom investigated strategy. Herein, the single-crystal-to-single-crystal transformation of [Co1.5 (bdc)1.5 (H2 bpz)]⋅DMF⋅4 H2 O (1) to [Co1.5 (bdc)1.5 (H2 bpz)]⋅0.5 I2 ⋅DMF (I2 @1) (H2 bdc=1,4-benzenedicarboxylic acid, H2 bpz=3,3',5,5'-tetramethyl-4,4'-bipyrazole) upon I2 loading caused a three orders of magnitude enhancement in electrical conductivity of the framework. Single-crystal X-ray diffraction revealed that I2 exists as a single molecule embedded in the channels of framework, and the C-H⋅⋅⋅I hydrogen bonds between I2 molecules and phenyl units on the porous surface of the framework were suggested to participate in n→σ* host-guest charge transfer, leading to increased electrical conductivity in I2 @1. Furthermore, 1 displayed moderate adsorption selectivity for CO2 over CH4 and N2 .
- Subjects :
- Materials science
Hydrogen bond
Inorganic chemistry
Sorption
02 engineering and technology
General Chemistry
Crystal structure
Conductivity
010402 general chemistry
021001 nanoscience & nanotechnology
Crystal engineering
01 natural sciences
0104 chemical sciences
Electrical resistivity and conductivity
Physical chemistry
Molecule
Metal-organic framework
0210 nano-technology
Subjects
Details
- ISSN :
- 21926506
- Volume :
- 82
- Database :
- OpenAIRE
- Journal :
- ChemPlusChem
- Accession number :
- edsair.doi...........d48f792ddd8878c844a7c3c0f142a3fe