On the impact of aromatic core fluorination in hydrogen-bonded liquid crystals

Ahmed F. Darweesh, Christian Anders, B. S. Ranjitha, G. Shanker and Mohamed Alaasar

RSC Adv., 2025, 15, 6803
DOI: 10.1039/D5RA00670H

Mesophase behavior of new linear supramolecular hydrogen-bonding complexes

H. A. Ahmed, M. Hagar and A. Aljuhani

RSC Adv., 2018, 8, 34937
DOI: 10.1039/C8RA07692H

Y-shaped tricatenar azobenzenes – functional liquid crystals with synclinic–anticlinic transitions and spontaneous helix formation

Mohamed Alaasar, Silvio Poppe, Yu Cao, Changlong Chen, Feng Liu, Chenhui Zhu and Carsten Tschierske

J. Mater. Chem. C, 2020, 8, 12902
DOI: 10.1039/D0TC03321A

Spontaneous mirror symmetry breaking in benzil-based soft crystalline, cubic liquid crystalline and isotropic liquid phases

Tino Reppe, Silvio Poppe, Xiaoqian Cai, Yu Cao, Feng Liu and Carsten Tschierske

Chem. Sci., 2020, 11, 5902
DOI: 10.1039/D0SC01396J

Recent synthetic advances in pyridine-based thermotropic mesogens

Deepak Devadiga and T. N. Ahipa

RSC Adv., 2019, 9, 23161
DOI: 10.1039/C9RA04389F

Controlling spontaneous mirror symmetry breaking in cubic liquid crystalline phases by the cycloaliphatic ring size

Tino Reppe, Christian Dressel, Silvio Poppe and Carsten Tschierske

Chem. Commun., 2020, 56, 711
DOI: 10.1039/C9CC09206D

Controlling the formation of heliconical smectic phases by molecular design of achiral bent-core molecules

Marco Poppe, Mohamed Alaasar, Anne Lehmann, Silvio Poppe, Maria-Gabriela Tamba, Marharyta Kurachkina, Alexey Eremin, Mamatha Nagaraj, Jagdish K. Vij, Xiaoqian Cai, Feng Liu and Carsten Tschierske

J. Mater. Chem. C, 2020, 8, 3316
DOI: 10.1039/C9TC06456G

Luminescent and photoconductive liquid crystalline lamellar and helical network phases of achiral polycatenars

Mohamed Alaasar, Ahmed F. Darweesh, Christian Anders, Konstantin Iakoubovskii and Masafumi Yoshio

Mater. Adv., 2024, 5, 561
DOI: 10.1039/D3MA00841J

Transition from lamellar to nanostructure mesophases in azobenzene-based hockey-stick polycatenars

Mohamed Alaasar, Xiaoqian Cai, Yu Cao and Feng Liu

New J. Chem., 2022, 46, 15871
DOI: 10.1039/D2NJ03255D

Azobenzene-based supramolecular liquid crystals: The role of core fluorination

Mohamed Alaasar, Jaques-Christopher Schmidt, Ahmed F. Darweesh and Carsten Tschierske

Journal of Molecular Liquids, 2020, 310, 113252
DOI: 10.1016/j.molliq.2020.113252

Molecular Packing in Double Gyroid Cubic Phases Revealed via Resonant Soft X-Ray Scattering

Yu Cao, Mohamed Alaasar, Asritha Nallapaneni, Mirosław Salamończyk, Peter Marinko, Ewa Gorecka, Carsten Tschierske, Feng Liu, Nataša Vaupotič and Chenhui Zhu

Phys. Rev. Lett., 2020, 125
DOI: 10.1103/PhysRevLett.125.027801

Mirror Symmetry Breaking in Liquids and Their Impact on the Development of Homochirality in Abiogenesis: Emerging Proto-RNA as Source of Biochirality?

Carsten Tschierske and Christian Dressel

Symmetry, 2020, 12, 1098
DOI: 10.3390/sym12071098

Cybotactic nematic phases with wide ranges in photoresponsive polycatenars

Mohamed Alaasar and Silvio Poppe

Liquid Crystals, 2020, 47, 939
DOI: 10.1080/02678292.2019.1690062

Nematic phases driven by hydrogen-bonding in liquid crystalline nonsymmetric dimers

Mohamed Alaasar and Carsten Tschierske

Liquid Crystals, 2019, 46, 124
DOI: 10.1080/02678292.2018.1476740

New Liquid Crystal Assemblies Based on Cyano-Hydrogen Bonding Interactions

Mohamed Hagar, Hoda A. Ahmed, Rua B. Alnoman, Mariusz Jaremko, Abdul-Hamid Emwas, Salim Sioud and Khulood A. Abu Al-Ola

Front. Chem., 2021, 9
DOI: 10.3389/fchem.2021.679885

Isothermal Chirality Switching in Liquid‐Crystalline Azobenzene Compounds with Non‐Polarized Light

Mohamed Alaasar, Silvio Poppe, Qingshu Dong, Feng Liu and Carsten Tschierske

Angewandte Chemie, 2017, 129, 10941
DOI: 10.1002/ange.201705559

Polar Order, Mirror Symmetry Breaking, and Photoswitching of Chirality and Polarity in Functional Bent‐Core Mesogens

Mohamed Alaasar, Marko Prehm, Sebastian Belau, Nerea Sebastián, Marharyta Kurachkina, Alexey Eremin, Changlong Chen, Feng Liu and Carsten Tschierske

Chemistry A European J, 2019, 25, 6362
DOI: 10.1002/chem.201806180

Spontaneous Symmetry Breaking in the Formation of Supramolecular Polymers: Implications for the Origin of Biological Homochirality

Suneesh C. Karunakaran, Brian J. Cafferty, Angela Weigert‐Muñoz, Gary B. Schuster and Nicholas V. Hud

Angewandte Chemie, 2019, 131, 1467
DOI: 10.1002/ange.201812808

Heterodimeric hydrogen-bonded mesogens comprising pyridine moiety: a review

Deepak Devadiga and T. N. Ahipa

Liquid Crystals Reviews, 2020, 8, 5
DOI: 10.1080/21680396.2020.1816861

Deciphering chiral structures in soft materials via resonant soft and tender X-ray scattering

Yu Cao, Chenrun Feng, Antal Jakli, Chenhui Zhu and Feng Liu

Giant, 2020, 2, 100018
DOI: 10.1016/j.giant.2020.100018

Swallow‐Tailed Polycatenars: Controlling Complex Liquid Crystal Self‐Assembly and Mirror Symmetry Breaking at the Lamellae‐Network Cross‐Over

Tino Reppe, Christian Dressel, Silvio Poppe, Alexey Eremin and Carsten Tschierske

Advanced Optical Materials, 2021, 9
DOI: 10.1002/adom.202001572

Synthesis, self-assembly, metal binding properties of triazole azobenzene based polycatenar dyes through click chemistry

Huiru Chen, Ruilin Zhang, Hongfei Gao, Huifang Cheng, Haipeng Fang and Xiaohong Cheng

Dyes and Pigments, 2018, 149, 512
DOI: 10.1016/j.dyepig.2017.10.025

Mirror Symmetry Breaking and Network Formation in Achiral Polycatenars with Thioether Tail

Mohamed Alaasar, Ahmed F. Darweesh, Xiaoqian Cai, Feng Liu and Carsten Tschierske

Chemistry A European J, 2021, 27, 14921
DOI: 10.1002/chem.202102226

Azobenzene-based polycatenars: Investigation on photo switching properties and optical storage devices

Jyothi Mannekote Shivanna, Mohamed Alaasar and Gurumurthy Hegde

Journal of Molecular Liquids, 2021, 341, 117341
DOI: 10.1016/j.molliq.2021.117341

Hockey-Stick Polycatenars: Network formation and transition from one dimensional to three-dimensional liquid crystalline phases

Mohamed Alaasar and Silvio Poppe

Journal of Molecular Liquids, 2022, 351, 118613
DOI: 10.1016/j.molliq.2022.118613

Spontaneous Symmetry Breaking in the Formation of Supramolecular Polymers: Implications for the Origin of Biological Homochirality

Suneesh C. Karunakaran, Brian J. Cafferty, Angela Weigert‐Muñoz, Gary B. Schuster and Nicholas V. Hud

Angew Chem Int Ed, 2019, 58, 1453
DOI: 10.1002/anie.201812808

Wide nematic phases induced by hydrogen-bonding

H. A. Ahmed, M. Hagar, M. Alaasar and M. Naoum

Liquid Crystals, 2019, 46, 550
DOI: 10.1080/02678292.2018.1512664

Isothermal Chirality Switching in Liquid‐Crystalline Azobenzene Compounds with Non‐Polarized Light

Mohamed Alaasar, Silvio Poppe, Qingshu Dong, Feng Liu and Carsten Tschierske

Angew Chem Int Ed, 2017, 56, 10801
DOI: 10.1002/anie.201705559

Controlling liquid and liquid crystalline network formation by core-fluorination of hydrogen bonded supramolecular polycatenars

Mohamed Alaasar, Jaques-Christopher Schmidt, Xiaoqian Cai, Feng Liu and Carsten Tschierske

Journal of Molecular Liquids, 2021, 332, 115870
DOI: 10.1016/j.molliq.2021.115870

New Advanced Liquid Crystalline Materials Bearing Bis-Azomethine as Central Spacer

Fowzia S. Alamro, Hoda A. Ahmed, Noha S. Bedowr, Muna S. Khushaim and Mohamed A. El-atawy

Polymers, 2022, 14, 1256
DOI: 10.3390/polym14061256

Cubic and tetragonal liquid crystal phases composed of non-chiral molecules: Chirality and macroscopic properties

Helmut R. Brand and Harald Pleiner

Eur. Phys. J. E, 2019, 42
DOI: 10.1140/epje/i2019-11906-8

Helical Networks of π‐Conjugated Rods – A Robust Design Concept for Bicontinuous Cubic Liquid Crystalline Phases with Achiral Ia3¯d and Chiral I23 Lattice

Christian Dressel, Tino Reppe, Silvio Poppe, Marko Prehm, Huanjun Lu, Xiangbing Zeng, Goran Ungar and Carsten Tschierske

Adv Funct Materials, 2020, 30
DOI: 10.1002/adfm.202004353

Water-Soluble Supramolecular Polymers of Paired and Stacked Heterocycles: Assembly, Structure, Properties, and a Possible Path to Pre-RNA

Gary B. Schuster, Brian J. Cafferty, Suneesh C. Karunakaran and Nicholas V. Hud

J. Am. Chem. Soc., 2021, 143, 9279
DOI: 10.1021/jacs.0c13081

Ionic liquid crystals with 1,2,3-triazole + tolane core and a pendant imidazolium unit: mesophases from one- to three-dimensional molecular organisation by the variation of alkoxy chains number and spacer length

Saul Ovalle, Eduard Westphal and Hugo Gallardo

Liquid Crystals, 2018, 45, 942
DOI: 10.1080/02678292.2018.1441461

Nematic Phases in Photo-Responsive Hydrogen-Bonded Liquid Crystalline Dimers

Christian Anders, Muhammad Abu Bakar, Tejal Nirgude and Mohamed Alaasar

Crystals, 2025, 15, 576
DOI: 10.3390/cryst15060576

Controlling Mirror Symmetry Breaking and Network Formation in Liquid Crystalline Cubic, Isotropic Liquid and Crystalline Phases of Benzil‐Based Polycatenars

Tino Reppe, Silvio Poppe and Carsten Tschierske

Chemistry A European J, 2020, 26, 16066
DOI: 10.1002/chem.202002869

Manipulation of Supramolecular Chirality in Bicontinuous Networks of Bent‐Shaped Polycatenar Dimers

Yu Cao, Yangyang Zhao, Tianyi Tan, Feng Liu and Mohamed Alaasar

Chemistry A European J, 2025, 31
DOI: 10.1002/chem.202403586

Synthesis and mesophase behaviour of branched azobenzene-based supramolecular hydrogen-bonded liquid crystals

Wan-Li He, Han Gu, Peng Zhao, Zhou Yang, Hui Cao and Dong Wang

Liquid Crystals, 2017, 44, 593
DOI: 10.1080/02678292.2017.1306635

Mirror symmetry breaking in liquids and liquid crystals

Carsten Tschierske

Liquid Crystals, 2018, 45, 2221
DOI: 10.1080/02678292.2018.1501822

New Rod-Like H-Bonded Assembly Systems: Mesomorphic and Geometrical Aspects

Laila A. Al-Mutabagani, Latifah Abdullah Alshabanah, Hoda A. Ahmed, Khulood A. Abu Al-Ola and Mohamed Hagar

Crystals, 2020, 10, 795
DOI: 10.3390/cryst10090795

Thioether-linked azobenzene-based liquid crystal dimers exhibiting the twist-bend nematic phase over a wide temperature range

Yuki Arakawa, Kenta Komatsu, Yuko Ishida and Hideto Tsuji

Liquid Crystals, 2021, 48, 641
DOI: 10.1080/02678292.2020.1800848

Azopyridine-based hydrogen-bonded liquid crystals with thioether tail

Mohamed Alaasar, Christian Anders, Rami Pashameah and Ahmed F. Darweesh

Liquid Crystals, 2023, 50, 2397
DOI: 10.1080/02678292.2023.2253199

Controlling ambidextrous mirror symmetry breaking in photosensitive supramolecular polycatenars by alkyl-chain engineering

Mohamed Alaasar, Xiaoqian Cai, Felix Kraus, Michael Giese, Feng Liu and Carsten Tschierske

Journal of Molecular Liquids, 2022, 351, 118597
DOI: 10.1016/j.molliq.2022.118597

Switching Chirophilic Self‐assembly: From meso‐structures to Conglomerates in Liquid and Liquid Crystalline Network Phases of Achiral Polycatenar Compounds

Mohamed Alaasar, Yu Cao, Yan Liu, Feng Liu and Carsten Tschierske

Chemistry A European J, 2022, 28
DOI: 10.1002/chem.202201857

Photoresponsive halogen bonded polycatenar liquid crystals

Mohamed Alaasar, Silvio Poppe and Carsten Tschierske

Journal of Molecular Liquids, 2019, 277, 233
DOI: 10.1016/j.molliq.2018.12.088

Role of local intermolecular contacts in the physical properties of induced helical phases based on nematic disubstituted azobenzene

V.V. Aleksandriiskii, I.V. Novikov, L.O. Monakhov, S.I. Pakhomov, V.A. Burmistrov and O.I. Koifman

Journal of Molecular Liquids, 2022, 346, 118266
DOI: 10.1016/j.molliq.2021.118266