Dimethylamino terminated ferroelectric nematogens revealing high permittivity

Cigl, Martin; Podoliak, Natalia; Landovský, Tomáš; Repček, Dalibor; Kužel, Petr; Novotná, Vladimı́ra

doi:10.48550/arxiv.2301.04865

Cited by 3 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6f), aryl iodine (17) and deprotected ethynyl biphenyl parts (21) were linked by the modified MC-SHC protocol, in which the LAG method (DIOX, Z = 0.3) was used. The modified MC-SHC reaction was completed at 80 1C for 20 min to obtain target compound (22). The synthetic protocols and material data are shown in Sections 2.1-2.3 in ESI, † and supplementary spectra (ESI †).…”

Section: Rapid MC Synthesis Of N F Lcsmentioning

confidence: 99%

“…Moreover, notable physical phenomena [9][10][11][12] and structures 13,14 are observed owing to the coupling between the polarization and fluidity. Since these discoveries, research into molecular design and synthesis of N F LCs and SmA F LCs has been launched 7,[15][16][17][18][19][20][21][22] toward a clear understanding of the underlying mechanism, 23,24 and development of state-of-the-art materials based on them. 25,26 However, typical synthetic routes of LC materials are through a multistep pathway that entirely rely on the traditional solution chemical (SC) synthesis.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Rapid, solvent-minimized and sustainable access to various types of ferroelectric-fluid molecules by harnessing mechano-chemical technology

Nishikawa,

Kuwayama,

Nihonyanagi

et al. 2023

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

Section: Rapid MC Synthesis Of N F Lcsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rapid, solvent-minimized and sustainable access to various types of ferroelectric-fluid molecules by harnessing mechano-chemical technology

Nishikawa,

Kuwayama,

Nihonyanagi

et al. 2023

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

“…6f), aryl iodine (17) and deprotected ethynyl biphenyl parts (21) were linked by the modified MC-SHC protocol, in which the LAG method (DIOX, η = 0.3) was used. The modified MC-SHC reaction was completed at 80 °C for 20 min to obtain target compound (22). The synthetic protocols and material data are shown in Sections 2.1-2.3 in Supplementary Information and supplementary spectra.…”

Section: Model IVmentioning

confidence: 99%

“…Moreover, notable physical phenomena [9][10][11][12] and structures 13,14 are observed owing to the coupling between the polarization and fluidity. Since these discoveries, research into molecular design and synthesis of NFLCs and SmAFLCs has been launched 7,[15][16][17][18][19][20][21][22] toward a clear understanding of the underlying mechanism, 23,24 and development of state-of-the-art materials based on them. 25,26 However, typical synthetic routes of LC materials are through a multistep pathway that entirely rely on the traditional solution chemical (SC) synthesis.…”

Section: Introductionmentioning

confidence: 99%

Rapid, solvent-minimized and sustainable access to various types of ferroelectric-fluid molecules by harnessing mechano-chemical technology

Nishikawa

Kuwayama

Nihonyanagi

et al. 2023

Preprint

View full text Add to dashboard Cite

Recently, ferroelectric fluid, such as ferroelectric nematic liquid crystals (NFLCs) and ferroelectric smectic A LCs (SmAFLCs), has been of great fundamental and practical interest owing to its excellent polarization properties (e.g., dielectric permittivity, polarization, and nonlinear optical coefficient). To deeply understand the physical underpinning of such emergent ferroelectric phases and develop state-of-the-art device applications, effective preparation of various NF molecules is essential. Herein, to expand the NFLC molecular library, we implemented a mechanochemical (MC) technique for the production of LCs, demonstrating its high synthetic compatibility with NF/SmAFLCs. Chemical building blocks with high polarity can be bonded one by one through various ball-milling MC reactions, resulting in rapid access to NFLC molecules, a series of DIO, RM734, UUZU, and BIOTN, with high yield within 2.7–7 h for 4–8 steps. For a new DIO variant, in which a terminal alkyl chain was completely removed, for the first time, we discovered the direct phase transition from the isotropic liquid from the SmAF phase. Furthermore, the highly bistable polarization memory (~5.2 μC cm−2) in the SmAF phases was evaluated using the positive–up–negative–down (PUND) method.

show abstract

“…The design of new molecules and materials that exhibit the N F phase is in its earliest stages; from Refs. [10][11][12][13][14][15][16][17][18][19][20][21][22][23], we know little about how molecular structure generates this phase, with the majority of materials known to exhibit it being derivatives of either RM734 [11] or DIO [24]. It stands to reason that, if we understood which parts of a molecule's structure are key for generating the N F phase, we would be able to synthesise 'better' materials with (relative) ease.…”

Section: Introductionmentioning

confidence: 99%

In Silico Interactome of a Room-Temperature Ferroelectric Nematic Material

Mandle

2023

Crystals

View full text Add to dashboard Cite

The ferroelectric nematic (NF) phase, characterised by the combination of orientational and polar order, offers unique properties that are challenging to replicate in other systems. Understanding the molecular structure requirements for generating the NF phase is crucial for the design of new materials with enhanced properties. This study investigates UUQU-4-N, a room-temperature NF material, using fully atomistic molecular dynamics simulations. UUQU-4-N does not spontaneously form an apolar nematic phase in silico, but exhibits a stable polar nematic configuration akin to the NF phase. The polar order remains significant and near saturation throughout the simulations. The study also examines the cylindrical pair correlation functions, providing insights into the preferred pairing modes and intermolecular interactions which we can then attribute to specific molecular features. We then simulate structural variants of UUQU-4-N, highlighting the potential for developing further examples of near-room-temperature ferroelectric nematic materials via the manipulation of the fluorination pattern, variations in terminal chain length, and replacement of the difluoromethyleneoxy linker.

show abstract

Dimethylamino terminated ferroelectric nematogens revealing high permittivity

Cited by 3 publications

References 0 publications

Rapid, solvent-minimized and sustainable access to various types of ferroelectric-fluid molecules by harnessing mechano-chemical technology

Rapid, solvent-minimized and sustainable access to various types of ferroelectric-fluid molecules by harnessing mechano-chemical technology

Rapid, solvent-minimized and sustainable access to various types of ferroelectric-fluid molecules by harnessing mechano-chemical technology

In Silico Interactome of a Room-Temperature Ferroelectric Nematic Material

Contact Info

Product

Resources

About