Synthesis and characterization of [1,2,3]-triazole containing liquid crystals through click reaction

Srividhya, D.; Manjunathan, S.; Thirumaran, S.; Saravanan, C.; Subramanian, S.

doi:10.1016/j.molstruc.2009.01.035

Cited by 49 publications

(24 citation statements)

References 32 publications

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“…The [1,2,3]-triazole heterocycle causes a bent angle(c.148.9°)of the mesomorphic core and consequently a linearity deviation that seems detrimental to the mesomorphic packing. The main factor contributing to smectic phases may be the dipolar interactions contributed by the [1,2,3]-triazole in addition to the dipole generated by the polar ether group [26]. From the date presented in Table 1, the melting point of these compounds is at 160°C.…”

Section: Liquid Crystal Property Of Tnmentioning

confidence: 99%

Smectic liquid crystals comprising triazole banana shaped achiral molecules: Synthesis and characterization

Zongying

Liuya

2017

Molecular Crystals and Liquid Crystals

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A series of novel liquid crystals containing [1,2,3]-triazole ring were synthesized via "click chemistry. " Their mesomorphic properties and photoelectric properties were investigated and the results indicated that most of compounds exhibited SmA over a wide temperature range (about 50°C). The threshold voltage and the response time of the mixture, T4 and LC 50100 were shorten 0.43 V and 71.5 ms with respect to those of LC 50100 respectively.

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Section: Liquid Crystal Property Of Tnmentioning

confidence: 99%

Smectic liquid crystals comprising triazole banana shaped achiral molecules: Synthesis and characterization

Zongying

Liuya

2017

Molecular Crystals and Liquid Crystals

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“…Nevertheless, only a few LC molecules created through the use of click chemistry have been reported, and all of them were calamitic molecules showing smectic or nematic LC phases. [57][58][59] Therefore, it is interesting to devise discotic LC materials via the click chemistry.…”

Section: Poly(benzyl Ether) Dendron-based Discotic Lc Materials Usingmentioning

confidence: 99%

Spontaneous bulk organization of molecular assemblers based on aliphatic polyether and/or poly(benzyl ether) dendrons

Cho

2012

Polym J

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This paper reviews our recent research with regard to bulk self-assemblers based on well-defined branched building blocks. Branched molecules/polymers have been known to show different physical properties from conventional linear-shaped polymers. As well as thermal and solution properties, structural modification into branched building blocks also has a significant influence on self-assembling behavior in the bulk states, including solid and liquid crystalline (LC) phases. As a branched component, dendrons/dendrimers with well-defined structures can be ideal candidates for the construction of advanced self-assemblers. Recently, we worked on new assembling systems such as dendron-coils, block codendrimers and discotic LC molecules. In the design, we used aliphatic polyether dendrons in most cases and poly(benzyl ether) dendrons in part. Their bulk assembling and thermal properties were found to be distinct from conventional linear block copolymers and they were dependent upon their chain architectures. To self-assemble into ordered nanostructures, the hybrid assembers were designed to have incompatible blocks, for example, hydrophilic and hydrophobic parts. Furthermore, in some cases an ionic complexation was carried out to maximize the immiscibility between the two different blocks. This review describes the molecular manipulations to engineer the nanoassemblies in bulk and also the ionic transportation properties depending on the assembling morphology.

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“…25 In addition to these two endothermic transitions, except Ia, remaining polymers exhibited one small hump just below the low temperature endothermic transition corresponding to glass transition (Tg) phenomena. The Tg value indicated in table 2 revealed that Tg decreases with increasing spacer length attributed to increase in spacer length could enhance segmental mobility to decrease Tg.…”

Section: Mesomorphic Propertymentioning

confidence: 99%

“…24 Nevertheless, introduction of polar alkoxy group through methylene carbon at the terminal [1,2,3]-triazole ring of same three-membered ring systems displayed liquid crystallinity. 25 Thus, the present work deals with synthesis of two homologous series of non-linear heterocyclic liquid crystalline polymers namely, poly[4-(4-alkoxymethyl)-1H-1,2,3-triazole-1-yl-4-methacryloyloxyalkyloxy benzoate]s using click chemistry with introduction of polar groups at terminal position in the heterocyclic ring through methylene group and investigated their mesomorphic property and their structure-property relationships.…”

Section: Introductionmentioning

confidence: 99%

Pendant triazole ring assisted mesogen containing side chain liquid crystalline polymethacrylates: Synthesis and characterization

2011

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Two series of click chemistry assisted alkoxymethyl-1H-[1,2,3]-triazol-1-yl containing sidechain liquid-crystalline polymethacrylates were synthesized by free radical polymerization technique. Mesogen was linked to backbone through various spacer units. Monomers and polymers were characterized by FT-IR, 1 H and 13 C-NMR spectral techniques. Thermal stability of polymers was confirmed by thermogravimetric analysis. Mesomorphic property and phase transition temperature of polymers were analysed by differential scanning calorimetry and polarized optical microscopy. Phase transition temperature and mesomorphic property of polymers with respect to insertion of polar alkoxy group on terminal triazole ring and spacer length between backbone and mesogen were investigated. Polymers exhibited grainy like textures under polarized optical microscopy. Spacer length between mesogen and backbone alters phase transition temperature of the polymers.

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Synthesis and characterization of [1,2,3]-triazole containing liquid crystals through click reaction

Cited by 49 publications

References 32 publications

Smectic liquid crystals comprising triazole banana shaped achiral molecules: Synthesis and characterization

Smectic liquid crystals comprising triazole banana shaped achiral molecules: Synthesis and characterization

Spontaneous bulk organization of molecular assemblers based on aliphatic polyether and/or poly(benzyl ether) dendrons

Pendant triazole ring assisted mesogen containing side chain liquid crystalline polymethacrylates: Synthesis and characterization

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