Direct Guest Exchange Induced Single-Crystal to Single-Crystal Transformation Accompanying Irreversible Crystal Expansion in Soft Porous Coordination Polymers

Tzu Yan Ho, Sheng Ming Huang, Jing Yun Wu, Kung-Chung Hsu, Kuang Lieh Lu

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Two flexible porous coordination materials, [Mn(pybimc)2]·2H2O·G (G = toluene, 1tol; THF, 1thf), where pybimc = 2-(2′-pyridyl)-benzimidazole-5-carboxylate, featuring identical one-dimensional chain structure have been characterized. Guest exchange studies have exhibited that 1tol cannot be converted to 1thf through direct replacement of guest toluene molecules by THF molecules, but, of particular interest, 1thf is actually converted to 1tol and 1aromatic (where aromatic = o-, m-, p-xylene) upon the exchange of THF to toluene and other aromatic molecules, respectively. This signifies a single-crystal to single-crystal transformation accompanied irreversible crystal expansion. In-depth analyses reveal that the nature of the weak yet sufficiently strong framework-guest C-H···π interactions, rather than the guest size, observed in this system plays a key role in guiding the adsorption of liquid-phase aromatics in the soft crystalline materials. (Figure Presented).

Original languageEnglish
Pages (from-to)4266-4271
Number of pages6
JournalCrystal Growth and Design
Volume15
Issue number9
DOIs
Publication statusPublished - 2015 Sep 2

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Toluene
coordination polymers
toluene
Polymers
Single crystals
Crystals
Molecules
expansion
single crystals
crystals
molecules
xylene
Xylene
carboxylates
liquid phases
Crystalline materials
Adsorption
adsorption
Liquids
interactions

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Direct Guest Exchange Induced Single-Crystal to Single-Crystal Transformation Accompanying Irreversible Crystal Expansion in Soft Porous Coordination Polymers. / Ho, Tzu Yan; Huang, Sheng Ming; Wu, Jing Yun; Hsu, Kung-Chung; Lu, Kuang Lieh.

In: Crystal Growth and Design, Vol. 15, No. 9, 02.09.2015, p. 4266-4271.

Research output: Contribution to journalArticle

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AU - Ho, Tzu Yan

AU - Huang, Sheng Ming

AU - Wu, Jing Yun

AU - Hsu, Kung-Chung

AU - Lu, Kuang Lieh

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N2 - Two flexible porous coordination materials, [Mn(pybimc)2]·2H2O·G (G = toluene, 1tol; THF, 1thf), where pybimc = 2-(2′-pyridyl)-benzimidazole-5-carboxylate, featuring identical one-dimensional chain structure have been characterized. Guest exchange studies have exhibited that 1tol cannot be converted to 1thf through direct replacement of guest toluene molecules by THF molecules, but, of particular interest, 1thf is actually converted to 1tol and 1aromatic (where aromatic = o-, m-, p-xylene) upon the exchange of THF to toluene and other aromatic molecules, respectively. This signifies a single-crystal to single-crystal transformation accompanied irreversible crystal expansion. In-depth analyses reveal that the nature of the weak yet sufficiently strong framework-guest C-H···π interactions, rather than the guest size, observed in this system plays a key role in guiding the adsorption of liquid-phase aromatics in the soft crystalline materials. (Figure Presented).

AB - Two flexible porous coordination materials, [Mn(pybimc)2]·2H2O·G (G = toluene, 1tol; THF, 1thf), where pybimc = 2-(2′-pyridyl)-benzimidazole-5-carboxylate, featuring identical one-dimensional chain structure have been characterized. Guest exchange studies have exhibited that 1tol cannot be converted to 1thf through direct replacement of guest toluene molecules by THF molecules, but, of particular interest, 1thf is actually converted to 1tol and 1aromatic (where aromatic = o-, m-, p-xylene) upon the exchange of THF to toluene and other aromatic molecules, respectively. This signifies a single-crystal to single-crystal transformation accompanied irreversible crystal expansion. In-depth analyses reveal that the nature of the weak yet sufficiently strong framework-guest C-H···π interactions, rather than the guest size, observed in this system plays a key role in guiding the adsorption of liquid-phase aromatics in the soft crystalline materials. (Figure Presented).

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