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Journal articles on the topic 'Chiral active matter'

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1

Workamp, Marcel, Gustavo Ramirez, Karen E. Daniels, and Joshua A. Dijksman. "Symmetry-reversals in chiral active matter." Soft Matter 14, no. 27 (2018): 5572–80. http://dx.doi.org/10.1039/c8sm00402a.

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A swarm of active-spinner particles displays a reversal of their swarming direction as their packing density is increased, an effect that can be enhanced by adding geometric friction between the particles.
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2

Metselaar, Luuk, Amin Doostmohammadi, and Julia M. Yeomans. "Topological states in chiral active matter: Dynamic blue phases and active half-skyrmions." Journal of Chemical Physics 150, no. 6 (2019): 064909. http://dx.doi.org/10.1063/1.5085282.

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3

Beppu, Kazusa, Ziane Izri, Tasuku Sato, Yoko Yamanishi, Yutaka Sumino, and Yusuke T. Maeda. "Edge current and pairing order transition in chiral bacterial vortices." Proceedings of the National Academy of Sciences 118, no. 39 (2021): e2107461118. http://dx.doi.org/10.1073/pnas.2107461118.

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Bacterial suspensions show turbulence-like spatiotemporal dynamics and vortices moving irregularly inside the suspensions. Understanding these ordered vortices is an ongoing challenge in active matter physics, and their application to the control of autonomous material transport will provide significant development in microfluidics. Despite the extensive studies, one of the key aspects of bacterial propulsion has remained elusive: The motion of bacteria is chiral, i.e., it breaks mirror symmetry. Therefore, the mechanism of control of macroscopic active turbulence by microscopic chirality is s
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4

Liu, Peng, Hongwei Zhu, Ying Zeng, et al. "Oscillating collective motion of active rotors in confinement." Proceedings of the National Academy of Sciences 117, no. 22 (2020): 11901–7. http://dx.doi.org/10.1073/pnas.1922633117.

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Due to its inherent out-of-equilibrium nature, active matter in confinement may exhibit collective behavior absent in unconfined systems. Extensive studies have indicated that hydrodynamic or steric interactions between active particles and boundary play an important role in the emergence of collective behavior. However, besides introducing external couplings at the single-particle level, the confinement also induces an inhomogeneous density distribution due to particle-position correlations, whose effect on collective behavior remains unclear. Here, we investigate this effect in a minimal chi
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5

Moore, Jeffrey M., Matthew A. Glaser, and Meredith D. Betterton. "Chiral self-sorting of active semiflexible filaments with intrinsic curvature." Soft Matter 17, no. 17 (2021): 4559–65. http://dx.doi.org/10.1039/d0sm01163k.

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6

Buchecker, R., J. Fünfschilling, and M. Schadt. "New Optically Active Dopants Based on Chiral Dioxanes." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 213, no. 1 (1992): 259–67. http://dx.doi.org/10.1080/10587259208028736.

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7

Shibata, T., M. Kimura, S. Takano, and K. Ogasawara. "Novel Chiral Dopants from Optically Active 2.4-pentanediol." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 237, no. 1 (1993): 483–85. http://dx.doi.org/10.1080/10587259308030161.

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8

WANG, Mingcheng. "Confinement Leads to Spatially Oscillatory Collective Motion of Chiral Active Matter." Bulletin of the Chinese Academy of Sciences 34, no. 2 (2020): 106–7. http://dx.doi.org/10.3724/sp.j.7103161524.

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9

Kuball, H. G., Th Müller, H. Brüning, and A. Schünhofer. "Chiral Induction by Optically Active Aminoanthraquinones in Nematic Phases." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 261, no. 1 (1995): 205–16. http://dx.doi.org/10.1080/10587259508033467.

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10

Shibata, T., M. Kimura, and K. Ogasawara. "Novel Chiral Dopants From Optically Active 2.4-Pentanediol (II)." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 350, no. 1 (2000): 293–95. http://dx.doi.org/10.1080/10587250008025251.

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11

Markovich, Tomer, Elsen Tjhung, and Michael E. Cates. "Chiral active matter: microscopic ‘torque dipoles’ have more than one hydrodynamic description." New Journal of Physics 21, no. 11 (2019): 112001. http://dx.doi.org/10.1088/1367-2630/ab54af.

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12

Ai, Bao-quan, Zhi-gang Shao, and Wei-rong Zhong. "Mixing and demixing of binary mixtures of polar chiral active particles." Soft Matter 14, no. 21 (2018): 4388–95. http://dx.doi.org/10.1039/c8sm00444g.

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13

Caprini, Lorenzo, and Umberto Marini Bettolo Marconi. "Active chiral particles under confinement: surface currents and bulk accumulation phenomena." Soft Matter 15, no. 12 (2019): 2627–37. http://dx.doi.org/10.1039/c8sm02492h.

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14

Yang, Ya, Jing Lu, and Lan Zhou. "Few-photon routing via chiral light-matter couplings." Communications in Theoretical Physics 74, no. 2 (2022): 025101. http://dx.doi.org/10.1088/1572-9494/ac46a6.

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Abstract A quantum router is one of the essential elements in the quantum network. Conventional routers only direct a single photon from one quantum channel into another. Here, we propose a few-photon router. The active element of the router is a single qubit chirally coupled to two independent waveguides simultaneously, where each waveguide mode provides a quantum channel. By introducing the operators of the scatter-free space and the controllable space, the output state of the one-photon and two-photon scattering are derived analytically. It is found that the qubit can direct one and two pho
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15

Carenza, L. N., G. Gonnella, D. Marenduzzo, and G. Negro. "Chaotic and periodical dynamics of active chiral droplets." Physica A: Statistical Mechanics and its Applications 559 (December 2020): 125025. http://dx.doi.org/10.1016/j.physa.2020.125025.

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16

Yoo, SeokJae, and Q.-Han Park. "Metamaterials and chiral sensing: a review of fundamentals and applications." Nanophotonics 8, no. 2 (2019): 249–61. http://dx.doi.org/10.1515/nanoph-2018-0167.

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AbstractChirality, a property of broken mirror symmetry, prevails in nature. Chiral molecules show different biochemical behaviors to their mirror molecules. For left or right circularly polarized lights, the fundamental chiral states of electromagnetic fields interact differently with chiral matter, and this effect has been used as a powerful tool for the detection of chiral molecules. This optical sensing, also termed chiral sensing, is not only easy to implement but also non-invasive to the analytes. However, the measurements made by the optical sensing of chiral molecules are challenging,
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17

Kim, Kyongwan, Natsuhiko Yoshinaga, Sanjib Bhattacharyya, Hikaru Nakazawa, Mitsuo Umetsu, and Winfried Teizer. "Large-scale chirality in an active layer of microtubules and kinesin motor proteins." Soft Matter 14, no. 17 (2018): 3221–31. http://dx.doi.org/10.1039/c7sm02298k.

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18

Liao, Guo-Jun, and Sabine H. L. Klapp. "Emergent vortices and phase separation in systems of chiral active particles with dipolar interactions." Soft Matter 17, no. 28 (2021): 6833–47. http://dx.doi.org/10.1039/d1sm00545f.

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19

Shaltout, Amr, Jingjing Liu, Vladimir M. Shalaev, and Alexander V. Kildishev. "Optically Active Metasurface with Non-Chiral Plasmonic Nanoantennas." Nano Letters 14, no. 8 (2014): 4426–31. http://dx.doi.org/10.1021/nl501396d.

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20

Salmón, Manuel, and Gerard Bidan. "Chiral Polypyrroles from Optically Active Pyrrole Monomers." Journal of The Electrochemical Society 132, no. 8 (1985): 1897–99. http://dx.doi.org/10.1149/1.2114249.

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21

Ma, Fuduo, Sijia Wang, David T. Wu, and Ning Wu. "Electric-field–induced assembly and propulsion of chiral colloidal clusters." Proceedings of the National Academy of Sciences 112, no. 20 (2015): 6307–12. http://dx.doi.org/10.1073/pnas.1502141112.

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Chiral molecules with opposite handedness exhibit distinct physical, chemical, or biological properties. They pose challenges as well as opportunities in understanding the phase behavior of soft matter, designing enantioselective catalysts, and manufacturing single-handed pharmaceuticals. Microscopic particles, arranged in a chiral configuration, could also exhibit unusual optical, electric, or magnetic responses. Here we report a simple method to assemble achiral building blocks, i.e., the asymmetric colloidal dimers, into a family of chiral clusters. Under alternating current electric fields
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22

Jeeva, S., S. J. Cowling, E. P. Raynes, and J. W. Goodby. "Chiral liquid crystal dopants derived from optically active drugs." Liquid Crystals 36, no. 10-11 (2009): 1193–99. http://dx.doi.org/10.1080/02678290903056087.

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23

Hernández, Raúl Josué, Francisco J. Sevilla, Alfredo Mazzulla, Pasquale Pagliusi, Nicola Pellizzi, and Gabriella Cipparrone. "Collective motion of chiral Brownian particles controlled by a circularly-polarized laser beam." Soft Matter 16, no. 33 (2020): 7704–14. http://dx.doi.org/10.1039/c9sm02404b.

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Remote switching from passive to collective chiral-active motion by circularly-polarized light is shown for spherical polymeric Brownian particles. Light-propulsion is triggered by the coupling between the particle's chirality and the light helicity.
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24

Shen, Zaiyi, Alois Würger, and Juho S. Lintuvuori. "Hydrodynamic self-assembly of active colloids: chiral spinners and dynamic crystals." Soft Matter 15, no. 7 (2019): 1508–21. http://dx.doi.org/10.1039/c8sm02352b.

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25

Takehara, Sadao, Masashi Osawa, Kayoko Nakamura, et al. "New chiral dopants for FLC materials: optically active cyclic ethers." Ferroelectrics 148, no. 1 (1993): 195–202. http://dx.doi.org/10.1080/00150199308019946.

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26

Levis, Demian, and Benno Liebchen. "Micro-flock patterns and macro-clusters in chiral active Brownian disks." Journal of Physics: Condensed Matter 30, no. 8 (2018): 084001. http://dx.doi.org/10.1088/1361-648x/aaa5ec.

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27

Toxvaerd, S. "Origin of homochirality in biological systems." International Journal of Astrobiology 4, no. 1 (2005): 43–48. http://dx.doi.org/10.1017/s1473550405002326.

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Models for segregation of racemic mixtures of chiral amphiphiles and lipophiles in aqueous solutions show that the amphiphiles with active isomerization kinetics can perform a spontaneous symmetry break during the segregation and self-assemble to homochiral matter. Based on physico-chemical facts, it is argued that D-glyceraldehyde, which was synthesized from the volatiles at the hydrothermal reactors at the origin of life, could be the origin of homochirality in biological systems.
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28

Masuda, Ryoji, Yoshio Kaneko, Yoshinori Tokura, and Youtarou Takahashi. "Electric field control of natural optical activity in a multiferroic helimagnet." Science 372, no. 6541 (2021): 496–500. http://dx.doi.org/10.1126/science.aaz4312.

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Controlling the chiral degree of freedom in matter has long been an important issue for many fields of science. The spin-spiral order, which exhibits a strong magnetoelectric coupling, gives rise to chirality irrespective of the atomic arrangement of matter. Here, we report the resonantly enhanced natural optical activity on the electrically active magnetic excitation, that is, electromagnon, in multiferroic cupric oxide. The electric field control of the natural optical activity is demonstrated through magnetically induced chirality endowed with magnetoelectric coupling. These optical propert
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29

Miyazawa, Kazutoshi, Shinichi Saito, Kanetsugu Terashima, Makoto Kikuchi, and Takashi Inukai. "Novel optically active compounds having 2-alkanoyloxypropyl moiety as chiral dopants." Ferroelectrics 121, no. 1 (1991): 179–85. http://dx.doi.org/10.1080/00150199108217622.

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30

Lin, Wenbin. "Metal-Organic Frameworks for Asymmetric Catalysis and Chiral Separations." MRS Bulletin 32, no. 7 (2007): 544–48. http://dx.doi.org/10.1557/mrs2007.104.

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Metal-organic frameworks (MOFs) are an interesting class of molecule-based hybrid materials built from metal-connecting points and bridging ligands. MOFs have received much attention, owing to their potential impact on many technological areas, including gas storage, separation, and heterogeneous catalysis. The modular nature of MOFs endows them with facile tunability, and as a result, properly designed MOFs can yield ideal heterogeneous catalysts with uniform active sites through judicious choice of the building blocks. Homochiral MOFs, which can be prepared by numerous approaches (constructi
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31

Ouchi, Yuko, Yasuhiro Morisaki, and Yoshiki Chujo. "Synthesis of Optically Active Dendrimers Having Chiral Bisphosphine as a Core." Polymer Bulletin 59, no. 3 (2007): 339–50. http://dx.doi.org/10.1007/s00289-007-0780-y.

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32

Asakura, Kouichi, Kayo Kobayashi, Yoshinori Mizusawa, Takehiro Ozawa, Shuichi Osanai, and Sadao Yoshikawa. "Generation of an optically active octahedral cobalt complex by a chiral autocatalysis." Physica D: Nonlinear Phenomena 84, no. 1-2 (1995): 72–78. http://dx.doi.org/10.1016/0167-2789(95)00013-t.

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33

Zullo, Valerio, Tianao Guo, Anna Iuliano, and Mark R. Ringenberg. "Control of Molecular Packing in Crystal and Electron Communication of Two Ferrocenyl Moieties across Chiral Isomannide or Isosorbide Bridge." Crystals 13, no. 3 (2023): 520. http://dx.doi.org/10.3390/cryst13030520.

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Intramolecular electronic communication between electrochemically active groups connected by a bridging moiety can be modified through small changes in the spatial disposition of the redox active moieties and/or by the nature of the central core. In this study, chiral bio-based compounds, namely isomannide and isosorbide, were employed as cheap and easy-to-functionalize chiral scaffolds to bridge two ferrocenyl electroactive moieties. The crystal structures of both bis-ferrocenyl diester complexes were studied and they showed that the chirality of the bridge results in an open or tight helical
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34

Lemmerer, Andreas, Susan A. Bourne, Mino R. Caira, et al. "Incorporating active pharmaceutical ingredients into a molecular salt using a chiral counterion." CrystEngComm 12, no. 11 (2010): 3634. http://dx.doi.org/10.1039/c0ce00043d.

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35

Crossland, W. A., and A. B. Davey. "Addressing requirements for chiral smectic liquid crystal active backplane spatial light modulators." Ferroelectrics 149, no. 1 (1993): 361–74. http://dx.doi.org/10.1080/00150199308217307.

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36

Mirzaei, Mitra, та Per Berglund. "Engineering of ωTransaminase for Effective Production of Chiral Amines". Journal of Computational and Theoretical Nanoscience 17, № 6 (2020): 2827–32. http://dx.doi.org/10.1166/jctn.2020.8947.

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ωTransaminases are pyridoxal-5-phosphat (PLP) dependent enzymes having the ability to catalyze the transference of an amino group to a keto compound. These enzymes are used for production of chiral amines which are important building blocks in pharmaceutical industry. There is often a need to improve enzyme properties such as enzyme stability, enzyme specificity and to decrease substrate-product inhibition. Here, protein engineering was applied to improve the enzyme activity of the enzyme from Chromobacterium violaceum Rational-design and site-directed mutagenesis were applied on position of (
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37

Lei, Qun-Li, Massimo Pica Ciamarra, and Ran Ni. "Nonequilibrium strongly hyperuniform fluids of circle active particles with large local density fluctuations." Science Advances 5, no. 1 (2019): eaau7423. http://dx.doi.org/10.1126/sciadv.aau7423.

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Disordered hyperuniform structures are an exotic state of matter having vanishing long-wavelength density fluctuations similar to perfect crystals but without long-range order. Although its importance in materials science has been brought to the fore in past decades, the rational design of experimentally realizable disordered strongly hyperuniform microstructures remains challenging. Here we find a new type of nonequilibrium fluid with strong hyperuniformity in two-dimensional systems of chiral active particles, where particles perform independent circular motions of the radius R with the same
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38

Saha, Rajat, Susobhan Biswas, and Golam Mostafa. "pH-Triggered construction of NLO active CMOFs: change in supramolecular assembly, water clusters, helical architectures and their properties." CrystEngComm 13, no. 3 (2011): 1018–28. http://dx.doi.org/10.1039/c0ce00505c.

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Two different chiral metal–organic frameworks (CMOF), namely, {[Cu<sub>2</sub>(1,10-phen)<sub>2</sub>(tartrate)H<sub>2</sub>O]·8H<sub>2</sub>O}<sub>n</sub> (1) and {[Cu(1,10-phen)(H<sub>2</sub>tartrate)H<sub>2</sub>O]·6H<sub>2</sub>O}<sub>n</sub> (2) have been synthesized by alternating the pH of the reaction media.
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39

Ikemoto, T., K. Sakashita, Y. Kageyama, et al. "Relationship between Molecular Structure and Induced Spontaneous Polarization for Chiral Dopants Containing an Optically Active Lactone." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 250, no. 1 (1994): 247–56. http://dx.doi.org/10.1080/10587259408028210.

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40

Cui, Ying, Xiaosai Wang, Huan Jiang, and Yongyuan Jiang. "High-efficiency and tunable circular dichroism in chiral graphene metasurface." Journal of Physics D: Applied Physics 55, no. 13 (2021): 135102. http://dx.doi.org/10.1088/1361-6463/ac4450.

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Abstract Circular dichroism (CD) response is extremely important for dynamic polarization control, chiral molecular sensing and imaging, etc. Here, we numerically demonstrated high-efficiency and tunable CD using a symmetry broken graphene-dielectric-metal composite microstructure. By introducing slot patterns in graphene ribbons, the metasurface exhibits giant polarization-selective absorption for circularly polarized (CP) wave excitations. The maximum CD reaches 0.87 at 2.78 THz, which originates from the localized surface plasmon resonances in patterned graphene. Besides, the operating freq
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41

Ziarani, Ghodsi M., Fatemeh Mohajer, Razieh Moradi, and Parisa Mofatehnia. "The Molecular Diversity Scope of Urazole in the Synthesis of Organic Compounds." Current Organic Synthesis 16, no. 7 (2019): 953–67. http://dx.doi.org/10.2174/1570179416666190925162215.

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Background: As a matter of fact, nitrogen as a hetero atom among other atoms has had an important role in active biological compounds. Since heterocyclic molecules with nitrogen are highly demanded due to biological properties, 4-phenylurazole as a compound containing nitrogen might be important in the multicomponent reaction used in agrochemicals, and pharmaceuticals. Considering the case of fused derivatives “pyrazolourazoles” which are highly applicable because of their application for analgesic, antibacterial, anti-inflammatory and antidiabetic activities as HSP-72 induction inhibitors (I
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42

Liu, Li, Shu-Ping Huang, Guo-Dong Yang, et al. "Zn[Htma][ddm]: An Interesting Three-Dimensional Chiral Nonlinear Optical-Active Zinc-Trimesate Framework†." Crystal Growth & Design 10, no. 2 (2010): 930–36. http://dx.doi.org/10.1021/cg901259e.

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43

Andreani, Franco, Luigi Angiolini, Valeria Grenci, and Elisabetta Salatelli. "Optically active polyalkylthiophenes: synthesis and polymerization of chiral, symmetrically substituted, quinquethiophene monomer." Synthetic Metals 145, no. 2-3 (2004): 221–27. http://dx.doi.org/10.1016/j.synthmet.2004.05.006.

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44

ARIGA, KATSUHIKO, TAKUJI AIMIYA, QINGMIN ZHANG, AKIHIRO OKABE, MAKIKO NIKI, and TAKUZO AIDA. ""PROTEOSILICA" A NOVEL NANOCOMPOSITE WITH PEPTIDE ASSEMBLIES IN SILICA NANOSPACE: PHOTOISOMERIZATION OF SPIROPYRAN DOPED IN CHIRAL ENVIRONMENT." International Journal of Nanoscience 01, no. 05n06 (2002): 521–25. http://dx.doi.org/10.1142/s0219581x02000607.

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Mesoporous silica composites filling densely peptide assemblies (Proteosilica) were newly synthesized as transparent films. Spiropyran guest was co-doped in the films and photo-isomerization between spiropyran form and merocyanine form was repeated by alternate irradiation of visible and UV lights. Circular dichroism (CD) active spectra were observed only for the spiropyran form in the Proteosilica with hexagonal geometry. However, the CD active behavior was absent for the spiropyran in lamellar Proteosilica. Difference in peptide assembling structures would affect chiral sensitivity of the do
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45

Lee, Kwang Yeon, Young Hee Lee, Chang Kyo Shin, and Geon Joong Kim. "Chiral (Salen) Complexes Encapsulated in Mesoporous ZSM-5 as an Optical Active Catalyst for Asymmetric Phenolic Ring Opening of Terminal Epoxides." Solid State Phenomena 124-126 (June 2007): 1809–12. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.1809.

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ZSM-5 was modified by alkaline and acidic solution to introduce mesoporosity in the crystals. Heterogenized Co(III) salen was prepared in the mesopores of ZSM-5 by ‘ship-in-a-bottle’ method. Phenolic ring opening of epoxides was performed successfully by using encapsulated chiral salen catalysts. Very high enantioselectivity and conversion were obtained in PKR reaction by immobilized catalysts.
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46

Słomka, Jonasz, Piotr Suwara, and Jörn Dunkel. "The nature of triad interactions in active turbulence." Journal of Fluid Mechanics 841 (February 26, 2018): 702–31. http://dx.doi.org/10.1017/jfm.2018.108.

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Generalised Navier–Stokes (GNS) equations describing three-dimensional active fluids with flow-dependent narrow spectral forcing have been shown to possess numerical solutions that can sustain significant energy transfer to larger scales by realising chiral Beltrami-type chaotic flows. To rationalise these findings, we study here the triad truncations of polynomial and Gaussian GNS models focusing on modes lying in the energy injection range. Identifying a previously unknown cubic invariant for the triads, we show that their asymptotic dynamics reduces to that of a forced rigid body coupled to
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47

Filippi, Antonello, and Maurizio Speranza. "Chiral ions in the gas phase. 5. Acid-induced methanolysis of optically active styrene oxide." International Journal of Mass Spectrometry 185-187 (April 1999): 425–35. http://dx.doi.org/10.1016/s1387-3806(98)14184-2.

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48

Lai, Xin, and Shaofan Li. "Substrate elasticity and surface tension mediate the spontaneous rotation of active chiral droplet on soft substrates." Journal of the Mechanics and Physics of Solids 161 (April 2022): 104788. http://dx.doi.org/10.1016/j.jmps.2022.104788.

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49

Alhendawi, Hussein, Ernesto Brunet, Elena Rodríguez Payán та Huda Alkahlout. "Novel optically active 2D materials based on λ-zirconium phosphate and chiral monocarboxylic acids: Synthesis and characterization". Journal of Inclusion Phenomena and Macrocyclic Chemistry 99, № 3-4 (2021): 217–26. http://dx.doi.org/10.1007/s10847-021-01043-z.

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50

Morisaki, Yasuhiro, Yuko Ouchi, Kazuhiko Tsurui, and Yoshiki Chujo. "Synthesis of the Optically Active Polymer Consisting of Chiral Phosphorus Atoms and p-Phenylene-ethynylene Units." Polymer Bulletin 58, no. 4 (2006): 665–71. http://dx.doi.org/10.1007/s00289-006-0703-3.

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