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One, two, and three-dimensional metal-organic coordination polymers derived from enantiopure organic phosphorate: homochirality, water stability and proton conduction

Abstract

The solvothermal reaction of metal ions and D-H3pmpc yield three phosphonate-based metal-organic coordination polymers, {Cu(D-Hpmpc)(CH3OH)}n (PMOCP 1), {Cu(D-Hpmpc)}n (PMOCP 2), {Cd2(D-pmpcH)(H2O)2Cl2}n (PMOCP 3) with diversified coordination fashions and dimensional features (D-H3pmpc = (D)-1-(phosphono-methyl)piperidine-3-carboxylic acid). PMOCP 1 exhibits a right-handed helical chain with a pitch of 6.785 Å and interchain O–HO hydrogen-bond. PMOCP 2 displays a chiral 2D network with (4, 4) topology and 1D O–HO hydrogen-bond chain. PMOCP 3 shows a non-interpenetrating diamondoid architecture and various hydrogen-bond interactions. Their chiralities are testified by vibrational circular dichroism spectroscopy and second-order nonlinear optical response measurements. Compared with PMOCPs 1−2, PMOCP 3 has a high water stability, a moderate proton conductivity of 9.87×10-5 S cm-1 at 298K and ~97% RH and a lower activation energy of 0.14 eV.

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Publication details

The article was received on 19 Aug 2017, accepted on 13 Sep 2017 and first published on 15 Sep 2017


Article type: Paper
DOI: 10.1039/C7CE01509G
Citation: CrystEngComm, 2017, Accepted Manuscript
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    One, two, and three-dimensional metal-organic coordination polymers derived from enantiopure organic phosphorate: homochirality, water stability and proton conduction

    G. Zhu, X. Q. liang, K. Cai, F. Zhang and J. Liu, CrystEngComm, 2017, Accepted Manuscript , DOI: 10.1039/C7CE01509G

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