Pillar-template strategy switching the redox activity and magnetic properties of trisphenylamine-based coordination polymers
It is an efficient approach to exploit a pillaring and templating strategy for creating varieties of functionalized coordination polymers (CPs). Four novel CPs incorporating single metal nodes and a redox-active tris(4-(pyridine-3-yl)phenyl)amine ligand ( m -NPy 3 ) have been prepared by a hydrother...
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Published in | CrystEngComm Vol. 22; no. 18; pp. 3155 - 3163 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Cambridge
Royal Society of Chemistry
12.05.2020
|
Subjects | |
Online Access | Get full text |
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Summary: | It is an efficient approach to exploit a pillaring and templating strategy for creating varieties of functionalized coordination polymers (CPs). Four novel CPs incorporating single metal nodes and a redox-active tris(4-(pyridine-3-yl)phenyl)amine ligand (
m
-NPy
3
) have been prepared by a hydrothermal method. Compounds
1-3
, [M(
m
-NPy
3
)(NO
3
)
2
·CH
3
OH]
n
(M = Co for
1
, Ni for
2
, and Zn for
3
), are isomorphous two-dimensional (2D) layered CPs. Compound
4
, [Co(
m
-NPy
3
)(TPA)
0.5
Cl·CH
3
OH]
n
(TPA = bidentate terephthalic acid), is a three-dimensional (3D) CP, which is pillared by linear bidentate terephthalic acid (TPA) linkers. Notably, with the presence of TPA, the layered compound
1
can be further assembled to the 3D pillared-layer architecture
4
by single-crystal-to-single-crystal (SC-SC) transformation. All the compounds were characterized and the redox activity of trisphenylamine is maintained in all four CPs proven by solid-state cyclic voltammetry. Compared with
1
, the location of the first oxide peak in
4
shows a reduction of nearly 0.14 V
vs.
Fc/Fc
+
. The magnetic study shows that the pillared-layer
4
exhibits a typical field-induced single-ion magnet property with a higher energy barrier (13.1 K) than
1
(5.1 K).
A pillar-template strategy was used to modify the redox activity and magnetic properties of trisphenylamine-based coordination polymers
via
a single-crystal-to-single-crystal transformation method. |
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Bibliography: | Electronic supplementary information (ESI) available. See DOI 10.1039/d0ce00256a |
ISSN: | 1466-8033 1466-8033 |
DOI: | 10.1039/d0ce00256a |