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Solvent induced rapid modulation of micro/nano structures of metal carboxylates coordination polymers: mechanism and morphology dependent magnetism.

Liu K, Shen ZR, Li Y, Han SD, Hu TL, Zhang DS, Bu XH, Ruan WJ - Sci Rep (2014)

Bottom Line: During the reaction, the organic solvents exhibited three types of modulation effect: anisotropic growth, anisotropic growth/formation of new crystalline phase and the formation of new crystalline phase solely, which was due to the variation of their binding ability with metal cations.Moreover, their modulation effect could be finely tuned by changing volume ratios of solvent mixtures.Additionally, the as-prepared Co-pydc CPs showed a fascinating morphology-dependent antiferromagnetic behavior.

View Article: PubMed Central - PubMed

Affiliation: 1] Department of Chemistry, TKL of Metal and Molecule-Based Material Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China [2].

ABSTRACT
Rational modulation of morphology is very important for functional coordination polymers (CPs) micro/nanostructures, and new strategies are still desired to achieve this challenging target. Herein, organic solvents have been established as the capping agents for rapid modulating the growth of metal-carboxylates CPs in organic solvent/water mixtures at ambient conditions. Co-3,5-pyridinedicarboxylate (pydc) CPs was studied here as the example. During the reaction, the organic solvents exhibited three types of modulation effect: anisotropic growth, anisotropic growth/formation of new crystalline phase and the formation of new crystalline phase solely, which was due to the variation of their binding ability with metal cations. The following study revealed that the binding ability was critically affected by their functional groups and molecular size. Moreover, their modulation effect could be finely tuned by changing volume ratios of solvent mixtures. Furthermore, they could be applied for modulating other metal-carboxylates CPs: Co-1,3,5-benzenetricarboxylic (BTC), Zn-pydc and Eu-pydc etc. Additionally, the as-prepared Co-pydc CPs showed a fascinating morphology-dependent antiferromagnetic behavior.

No MeSH data available.


Related in: MedlinePlus

The illustration of modulation growth process for Co-pydc CPs using organic solvents as the capping agents.
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f3: The illustration of modulation growth process for Co-pydc CPs using organic solvents as the capping agents.

Mentions: Based on the morphology, structure and composition analysis of Co-pdyc CPs, the organic solvents used here could be divided into three types as follow (Fig. 3, coincided with three groups of CPs referred above):


Solvent induced rapid modulation of micro/nano structures of metal carboxylates coordination polymers: mechanism and morphology dependent magnetism.

Liu K, Shen ZR, Li Y, Han SD, Hu TL, Zhang DS, Bu XH, Ruan WJ - Sci Rep (2014)

The illustration of modulation growth process for Co-pydc CPs using organic solvents as the capping agents.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4129412&req=5

f3: The illustration of modulation growth process for Co-pydc CPs using organic solvents as the capping agents.
Mentions: Based on the morphology, structure and composition analysis of Co-pdyc CPs, the organic solvents used here could be divided into three types as follow (Fig. 3, coincided with three groups of CPs referred above):

Bottom Line: During the reaction, the organic solvents exhibited three types of modulation effect: anisotropic growth, anisotropic growth/formation of new crystalline phase and the formation of new crystalline phase solely, which was due to the variation of their binding ability with metal cations.Moreover, their modulation effect could be finely tuned by changing volume ratios of solvent mixtures.Additionally, the as-prepared Co-pydc CPs showed a fascinating morphology-dependent antiferromagnetic behavior.

View Article: PubMed Central - PubMed

Affiliation: 1] Department of Chemistry, TKL of Metal and Molecule-Based Material Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China [2].

ABSTRACT
Rational modulation of morphology is very important for functional coordination polymers (CPs) micro/nanostructures, and new strategies are still desired to achieve this challenging target. Herein, organic solvents have been established as the capping agents for rapid modulating the growth of metal-carboxylates CPs in organic solvent/water mixtures at ambient conditions. Co-3,5-pyridinedicarboxylate (pydc) CPs was studied here as the example. During the reaction, the organic solvents exhibited three types of modulation effect: anisotropic growth, anisotropic growth/formation of new crystalline phase and the formation of new crystalline phase solely, which was due to the variation of their binding ability with metal cations. The following study revealed that the binding ability was critically affected by their functional groups and molecular size. Moreover, their modulation effect could be finely tuned by changing volume ratios of solvent mixtures. Furthermore, they could be applied for modulating other metal-carboxylates CPs: Co-1,3,5-benzenetricarboxylic (BTC), Zn-pydc and Eu-pydc etc. Additionally, the as-prepared Co-pydc CPs showed a fascinating morphology-dependent antiferromagnetic behavior.

No MeSH data available.


Related in: MedlinePlus