Mesomorphic phase transition behaviour of photopolymerisable liquid crystalline triphenylene ether compounds

Jung, Young Ju; Ka, Jae‐Won; Kim, Eun Chol; Ahn, Taek; Yi, Mi Hye

doi:10.1080/02678290903295735

Cited by 6 publications

(4 citation statements)

References 25 publications

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“…In the case of the non-reactive analogue, NP2, its melting (169 • C) and clearing temperatures (>300 • C) were higher than those of P2 as expected ( Figure 4(b)) [20,21]. Classical nematic mesophase texture was observed for NP2 at 262 • C ( Figure 5(b)).…”

Section: High Temperature Reactive Mesogen and Non-reactive Mesogen (supporting

confidence: 65%

“…It is worth noting that the lower phase transition temperatures of reactive mesogen P1 compared to those of non-reactive analogue NP1 is attributed to the additional non-linear polarisable di-acrylate end groups of P1 [20,21].…”

Section: Room Temperature Reactive and Non-reactive Mesogen (P1 And Np1)mentioning

confidence: 99%

“…A series of new reactive compounds, P1-P4 and their corresponding non-reactive analogues, NP1-NP4, were prepared using the previously reported methods shown in Scheme 2 [13,21]. Among these compounds, NP3 and NP4 were obtained as intermediates throughout the synthetic pathway.…”

Section: Synthesesmentioning

confidence: 99%

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Synthesis and characterisation of photopolymerisable liquid crystals based on the π-extended fluorene core and their corresponding non-reactive analogues

et al. 2011

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2011)Synthesis and characterisation of photopolymerisable liquid crystals based on the π-extended fluorene core and their corresponding non-reactive analogues, Liquid Crystals, 38:5, 589-599,We have synthesised a series of new reactive mesogens with photopolymerisable di-acrylates and their corresponding non-reactive analogues based on the π -conjugated aromatic core, fluorene (F)-di-[thiophene (T)-benzene (B)], using the Stille and Suzuki coupling reaction. The effect of lateral alkyl chains on the 9-position of the central fluorene moiety as well as α, ω-side alkyl chains attached to the π -conjugated aromatic core on the mesomorphism was investigated by utilising differential scanning calorimetry (DSC) and polarising optical microscopy (POM). A wide angle X-ray scattering (WAXS) study at the various temperatures was also carried out to reveal phase structures. Photopolymerisable di-acrylates connected directly to the rigid aromatic core showed higher phase transition temperatures, probably due to the induced dipole moment in comparison with those of a non-reactive methyl-ether counterpart.

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Section: High Temperature Reactive Mesogen and Non-reactive Mesogen (supporting

confidence: 65%

Section: Room Temperature Reactive and Non-reactive Mesogen (P1 And Np1)mentioning

confidence: 99%

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Synthesis and characterisation of photopolymerisable liquid crystals based on the π-extended fluorene core and their corresponding non-reactive analogues

et al. 2011

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“…This can be achieved through quenching the mesophase into a glass, and oligomeric systems have proved particularly suitable in this regard [34], or through the more versatile strategy of in situ crosslinking (network formation). However, there are only a few reports on the synthesis and properties of polymerisable and cross-linkable triphenylene discotics [35,36].…”

Section: Introductionmentioning

confidence: 98%