Intermolecular interaction in multicomponent supramolecular complexes through hydrogen-bonding association

Jianwei Xu; Chaobin He; Kee Chua Toh; Xuehong Lu

doi:10.1021/ma020971u

Intermolecular interaction in multicomponent supramolecular complexes through hydrogen-bonding association

Jianwei Xu, Chaobin He^*, Kee Chua Toh, Xuehong Lu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

A series of main-chain hydrogen-bonded supramolecular complexes have been prepared by self-assembly of proton donor (diacid) and acceptor (bipyridyl ethylene) through the formation of intermolecular hydrogen bonds. The phase transition behaviors were studied using differential scanning calorimetry and polarized optical microscopy. X-ray photoelectron spectroscopy study indicated that the binding energy of N 1s upshifted ca. 0.8 eV, which was within the limit of the hydrogen-bonding interaction. Solid-state CP/MAS ¹³C NMR spectroscopy experiments revealed that an induced upfield shift (Δδ ≥ 4 ppm) of carbonyl carbon in solid state was observed as a result of the formation of intermolecular hydrogen bond. The natural abundance CP/MAS ¹⁵N NMR spectroscopy also supported that the molecular complexes with hydrogen bond characteristics rather than zwitterionic complexes were formed on the basis of the change in ¹⁵N chemical shift.

Original language	English
Pages (from-to)	8846-8851
Number of pages	6
Journal	Macromolecules
Volume	35
Issue number	23
DOIs	https://doi.org/10.1021/ma020971u
Publication status	Published - Nov 5 2002
Externally published	Yes

ASJC Scopus Subject Areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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title = "Intermolecular interaction in multicomponent supramolecular complexes through hydrogen-bonding association",

abstract = "A series of main-chain hydrogen-bonded supramolecular complexes have been prepared by self-assembly of proton donor (diacid) and acceptor (bipyridyl ethylene) through the formation of intermolecular hydrogen bonds. The phase transition behaviors were studied using differential scanning calorimetry and polarized optical microscopy. X-ray photoelectron spectroscopy study indicated that the binding energy of N 1s upshifted ca. 0.8 eV, which was within the limit of the hydrogen-bonding interaction. Solid-state CP/MAS 13C NMR spectroscopy experiments revealed that an induced upfield shift (Δδ ≥ 4 ppm) of carbonyl carbon in solid state was observed as a result of the formation of intermolecular hydrogen bond. The natural abundance CP/MAS 15N NMR spectroscopy also supported that the molecular complexes with hydrogen bond characteristics rather than zwitterionic complexes were formed on the basis of the change in 15N chemical shift.",

author = "Jianwei Xu and Chaobin He and Toh, {Kee Chua} and Xuehong Lu",

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T1 - Intermolecular interaction in multicomponent supramolecular complexes through hydrogen-bonding association

AU - Xu, Jianwei

AU - He, Chaobin

AU - Toh, Kee Chua

AU - Lu, Xuehong

PY - 2002/11/5

Y1 - 2002/11/5

N2 - A series of main-chain hydrogen-bonded supramolecular complexes have been prepared by self-assembly of proton donor (diacid) and acceptor (bipyridyl ethylene) through the formation of intermolecular hydrogen bonds. The phase transition behaviors were studied using differential scanning calorimetry and polarized optical microscopy. X-ray photoelectron spectroscopy study indicated that the binding energy of N 1s upshifted ca. 0.8 eV, which was within the limit of the hydrogen-bonding interaction. Solid-state CP/MAS 13C NMR spectroscopy experiments revealed that an induced upfield shift (Δδ ≥ 4 ppm) of carbonyl carbon in solid state was observed as a result of the formation of intermolecular hydrogen bond. The natural abundance CP/MAS 15N NMR spectroscopy also supported that the molecular complexes with hydrogen bond characteristics rather than zwitterionic complexes were formed on the basis of the change in 15N chemical shift.

AB - A series of main-chain hydrogen-bonded supramolecular complexes have been prepared by self-assembly of proton donor (diacid) and acceptor (bipyridyl ethylene) through the formation of intermolecular hydrogen bonds. The phase transition behaviors were studied using differential scanning calorimetry and polarized optical microscopy. X-ray photoelectron spectroscopy study indicated that the binding energy of N 1s upshifted ca. 0.8 eV, which was within the limit of the hydrogen-bonding interaction. Solid-state CP/MAS 13C NMR spectroscopy experiments revealed that an induced upfield shift (Δδ ≥ 4 ppm) of carbonyl carbon in solid state was observed as a result of the formation of intermolecular hydrogen bond. The natural abundance CP/MAS 15N NMR spectroscopy also supported that the molecular complexes with hydrogen bond characteristics rather than zwitterionic complexes were formed on the basis of the change in 15N chemical shift.

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JO - Macromolecules

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ER -

Intermolecular interaction in multicomponent supramolecular complexes through hydrogen-bonding association

Abstract

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