Structure analysis of porous coordination polymers with flexible framework by X-ray powder diffraction.

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This study revealed the structural change in the gas adsorption process of porous coordination polymers(PCP) with flexible framework by the synchrotron powder diffraction method. It was found that a certain PCP with reporter molecules in the nanopore transformed its framework from lozenge shape to square shape with increasing the amount of adsorbate CO_2.The structure of reporter molecule in the nanopore also deformed in sync with it emitting a blue light. As a result this material was found to play role as a CO_2 sensor.