2017
DOI: 10.1039/c7sm01166k
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Topochemical polymerization of dumbbell-shaped diacetylene monomers: relationship between chemical structure, molecular packing structure, and gelation property

Abstract: Herein, we have synthesized novel photopolymerizable dumbbell-shaped diacetylene liquid crystal (LC) monomers by locating a diacetylene dicarboxylic acid group at the center and chemically connecting swallow-tails, such as hydrophobic alkyl chains (abbreviated as ATDI) and amphiphilic biphenyl mesogens (abbreviated as BPDI), with bisamide groups. Major phase transitions of dumbbell-shaped diacetylene monomers were identified using differential scanning calorimetry (DSC), polarized optical microscopy (POM), and… Show more

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Cited by 21 publications
(16 citation statements)
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“…The gelation process is performed by heating the sample in a screw-capped vial and subsequently cooling to room temperature. , 1AZ3BP asymmetric macrogelator can immobilize the organic solvents (cyclohexane and methanol with 3 wt % 1AZ3BP) and forms a very stable organogel under ambient conditions even for several months (Figure a). The gelation capabilities of 1AZ3BP in other organic solvents are summarized in Table S1.…”
mentioning
confidence: 99%
“…The gelation process is performed by heating the sample in a screw-capped vial and subsequently cooling to room temperature. , 1AZ3BP asymmetric macrogelator can immobilize the organic solvents (cyclohexane and methanol with 3 wt % 1AZ3BP) and forms a very stable organogel under ambient conditions even for several months (Figure a). The gelation capabilities of 1AZ3BP in other organic solvents are summarized in Table S1.…”
mentioning
confidence: 99%
“…The lower frequencies in the case of ADA Y‐phase are indicative of weaker NH bond likely due to hydrogen bonding between the NH units and carbonyl oxygen in adjacent aminoanthraquinones residues. [ 45,54 ] The FTIR shifts indicate close proximity of anthraquinone units in ADA Y‐phase in a face‐to‐face fashion which allows the aminoanthraquinone headgroups to form hydrogen bonding. Importantly, thermal treatment of the R‐phase (heating at 80 °C) resulted in shifts of the FTIR peaks toward the spectral positions of the Y‐phase.…”
Section: Resultsmentioning
confidence: 99%
“…As shown in Scheme , the rigid biphenyl‐based LC dendron (R) with amphiphilic flexible side chains (hydrophobic alkyl and hydrophilic ethylene oxide chains) were chemically linked to C 60 . To assist the construction of hierarchical nanostructures of C 60 D, the pyrene‐based tweezer‐like asymmetric dendron (PD) with three biphenyl‐based LC groups was additionally prepared . Owing to distinct natures between the amphiphilic dendrons and the π‐conjugated C 60 , C 60 D can exhibit strong nanophase separation at molecular scale and tend to form into a layer structure .…”
Section: Resultsmentioning
confidence: 99%