Chirality in Some Liquid Crystalline Association Chain Polymers

He, Chaobin; Lee, Chien-Ming; Griffin, Anselm C.; Bouteiller, Laurent; Lacoudre, Nelly; Boileau, Sylvie; Fouquey, C.; Lehn, Jean‐Maríe

doi:10.1080/10587259908023767

Cited by 19 publications

(14 citation statements)

References 13 publications

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“…Hydrogen bonding has been used to form small molecule liquid crystals (1,9), as well as main-chain (10-15) and side-chain (16,17) mesogenic polymers, and calamitic (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18), discotic (19,20) and banana shaped (21) liquid crystals. One of the most commonly used associations is the benzoic acid and pyridine assembly.…”

Section: Introductionmentioning

confidence: 99%

Supramolecular main-chain liquid crystalline polymers and networks with competitive hydrogen bonding: a study of flexible bis-acids and a mixture of rigid and flexible polypyridyls

Miesen¹,

Friday²,

Wiegel³

2011

Liquid Crystals

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A series of novel liquid crystalline supramolecular networks formed through hydrogen bonds have been synthe sised. These networks are based on flexible bi-benzoic acid and two types of pyridyl species -a small rigid bipyridyl capable of forming liquid crystalline phases and polyfunctional non-mesogenic pyridyl species that can compete for available hydrogen bond donor molecules. It was found that the networks display monotropic nematic char acter at high concentrations of disrupting net points -up to 50% for tetrapyridyls, 40% for tripyridyls and 35% for bipyridyls. Weak smectic phases were observed in all systems in loadings up to 10% of each disrupting unit. It is believed that the reversibility of the hydrogen bond allows for the formation of the ordered mesophases in the presence of the non-liquid crystalline groups.

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Section: Introductionmentioning

confidence: 99%

Supramolecular main-chain liquid crystalline polymers and networks with competitive hydrogen bonding: a study of flexible bis-acids and a mixture of rigid and flexible polypyridyls

Miesen¹,

Friday²,

Wiegel³

2011

Liquid Crystals

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“…Hydrogen bonding has been used to form small molecule liquid crystals [1,9], as well as main-chain [10][11][12][13][14][15] and side-chain [16,17] mesogenic polymers, and calamitic [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], discotic [19,20] and bananashaped [21] liquid crystals. One of the most commonly used associations is the benzoic acid and pyridine assembly.…”

Section: Introductionmentioning

confidence: 99%

Supramolecular main-chain liquid crystalline polymers and networks with competitive hydrogen bonding: a study of rigid networking agents in supramolecular systems

et al. 2012

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“…[16][17][18] Extensive work has been carried out in the formation and analysis of main-chain supramolecular polymers and small molecules from these components. [19][20][21] Biphenyl acid/pyridine derivatives have also been implemented for mesogen assembly, 22 but the higher melting nature of a biphenyl acid can make complexes with some pyridine derivatives difficult, especially if the pyridine is susceptible to degradation or sublimation at the temperatures needed to induce fluidity in the biphenyl acid species.…”

Section: Introductionmentioning

confidence: 99%

Naphthoic acid derivatives as hydrogen bond donors in supramolecular materials

Riedel

Kumpfer

Rogness

et al. 2006

J of Applied Polymer Sci

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The synthesis of a series of 6-hydroxy-2-naphthoic acid derivatives is described. These have been used to form supramolecular main-chain liquid crystalline polymers. These hydrogen bond donors are complexed with a series of bisfunctionalized rigid pyridine species. These associative chain structures were analyzed through differential scanning calorimetry and polarizing light thermal optical microscopy. The liquid crystalline phases formed displayed mainly enantiotropic nematic phases that display an increase in clearing temperature as the rigid portions of the supramolecular system increased in length. A decrease in the clearing temperature was observed as the length of the flexible spacer group increased. Both of these observations follow established trends in liquid crystalline behavior.

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Chirality in Some Liquid Crystalline Association Chain Polymers

Cited by 19 publications

References 13 publications

Supramolecular main-chain liquid crystalline polymers and networks with competitive hydrogen bonding: a study of flexible bis-acids and a mixture of rigid and flexible polypyridyls

Supramolecular main-chain liquid crystalline polymers and networks with competitive hydrogen bonding: a study of flexible bis-acids and a mixture of rigid and flexible polypyridyls

Supramolecular main-chain liquid crystalline polymers and networks with competitive hydrogen bonding: a study of rigid networking agents in supramolecular systems

Naphthoic acid derivatives as hydrogen bond donors in supramolecular materials

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