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Journal articles on the topic 'Achiral and chiral'

Author: Grafiati

Published: 18 May 2024

Last updated: 31 July 2025

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1

Rananaware, Anushri, Duong Duc La, Mohammad Al Kobaisi, Rajesh S. Bhosale, Sidhanath V. Bhosale, and Sheshanath V. Bhosale. "Controlled chiral supramolecular assemblies of water soluble achiral porphyrins induced by chiral counterions." Chemical Communications 52, no. 67 (2016): 10253–56. http://dx.doi.org/10.1039/c6cc04427a.

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2

Guven, Zekiye P., Burcin Ustbas, Kellen M. Harkness, et al. "Synthesis and characterization of mixed ligand chiral nanoclusters." Dalton Transactions 45, no. 28 (2016): 11297–300. http://dx.doi.org/10.1039/c6dt00785f.

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Chiral mixed ligand silver nanoclusters were synthesized in the presence of a chiral and an achiral ligand. While the chiral ligand led mostly to the formation of nanoparticles, the presence of the achiral ligand drastically increased the yield of nanoclusters with enhanced chiral properties.

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3

Reyes Calle, Juliana, Jairo Antonio Cubillos Lobo, Consuelo Montes de Correa, and Aída Luz Villa Holguín de P. "Oxidising agent and catalyst chirality effect on epoxidation of R-(+)- Limonene using Jacobsen-type catalysts." Ingeniería e Investigación 28, no. 2 (2008): 37–44. http://dx.doi.org/10.15446/ing.investig.v28n2.14890.

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The oxidising agent effect on R-(+)-Limonene epoxide diastereoselectivity using chiral and achiral Jacobsen’s type catalysts is presented. The type of oxidising agent strongly influences diastereoselectivity. Moderate diastereomeric excesses were achieved in the presence of oxidising agents prepared in situ but in the absence of catalyst (23% for DMD and 29% for O2/pivalaldehyde). Similar diastereomeric excesses were obtained with both chiral and achiral catalyst when the oxidising agents were prepared in situ; 56% and 50% excesses were obtained when using DMD for the chiral and achiral cataly

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4

Wan, Xingcheng, Yangyang Li, Yixin Wang, Yifan Li, and Chao Zhang. "Recent Advances in Chiral and Achiral Metasurfaces Under Symmetry Preservation and Breaking." Symmetry 17, no. 7 (2025): 1001. https://doi.org/10.3390/sym17071001.

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Structural symmetry preservation and breaking play important roles in optical manipulation at subwavelength scales. By precisely engineering the symmetry of the nanostructures, metasurfaces can effectively realize various optical functions such as polarization control, wavefront shaping, and on-chip optical integration, with promising applications in information photonics, bio-detection, and flexible devices. In this article, we review the recent advances in chiral and achiral metasurfaces based on symmetry manipulation. We first introduce the fundamental principles of chiral and achiral metas

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5

Reyes, Juliana, Jairo Antonio Cubillos, Aída Luz Villa, and Consuelo Montes de Correa. "Effect of substrate and catalyst chirality on the diastereoselective epoxidation of R-(+)-limonene with manganese(III) salen complexes." Revista Facultad de Ingeniería Universidad de Antioquia, no. 48 (July 23, 2013): 18–26. http://dx.doi.org/10.17533/udea.redin.16005.

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The asymmetric epoxidation of R-(+)-limonene in the presence of the Jacobsen´s catalyst in its chiral and achiral either homogeneous or heterogeneous (immobilized on Al-MCM-41) forms was studied using in situ generated dimethyldioxirane as oxidizing agent. It was found that the catalytic activity of the chiral and achiral forms of the Jacobsen´s catalyst was very similar either homogeneous or heterogeneous. This result suggests that the preferential formation of cis-(+)-1,2-limonene oxide depends not only on the catalyst chiral center, but also on the substrate chiral center. This represents a

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6

Pakalidou, Nikoletta, David L. Cheung, Andrew J. Masters, and Carlos Avendaño. "Macroscopic chiral symmetry breaking in monolayers of achiral nonconvex platelets." Soft Matter 13, no. 45 (2017): 8618–24. http://dx.doi.org/10.1039/c7sm01840a.

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The fabrication of chiral structures using achiral building blocks is a fundamental problem that remains a challenge in materials science. Pictured are local chiral configurations formed by non-convex (achiral) platelets with 6- and 4-fold symmetries.

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7

Wilson, Tyler M., Audra Davis, Reilly E. Sonstrom, et al. "Essential Oil Composition and Enantioselective Profile of Agastache urticifolia (Lamiaceae) and Monardella odoratissima (Lamiaceae) from Utah." Molecules 28, no. 5 (2023): 2249. http://dx.doi.org/10.3390/molecules28052249.

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Two species within the Lamiaceae (mint) family, Agastache urticifolia and Monardella odoratissima, are aromatic plants that are native to the Intermountain Region (USA). Essential oil produced through steam distillation was examined to establish the essential oil yield and both the achiral and chiral aromatic profiles of both plant species. The resulting essential oils were analyzed by GC/MS, GC/FID, and MRR (molecular rotational resonance). For A. urticifolia and M. odoratissima, achiral essential oil profiles were largely composed of limonene (71.0%, 27.7%), trans-β-ocimene (3.6%, 6.9%), and

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8

Dressel, Christian, Wolfgang Weissflog, and Carsten Tschierske. "Spontaneous mirror symmetry breaking in a re-entrant isotropic liquid." Chemical Communications 51, no. 87 (2015): 15850–53. http://dx.doi.org/10.1039/c5cc06843f.

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9

Wang, Lewen, Tengfei He, Hailiang Liao, et al. "A Theoretical Design of Chiral Molecules through Conformational Lock towards Circularly Polarized Luminescence." Photonics 9, no. 8 (2022): 532. http://dx.doi.org/10.3390/photonics9080532.

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Circularly polarized (CP) light has shown great potential in quantum computing, optical communications, and three-dimensional displays. It is still a challenge to produce high-efficiency and high-purity CP light. Herein, we proposed a strategy to design chiral organic small molecules for CP light generation. These kinds of chiral molecules are formed by achiral light-emitting groups and achiral alkyl chains through conformational lock, which indicates that chirality can also be introduced into achiral light-emitting groups through rational molecular design. The chirality of these molecules can

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10

Becalski, Adam, William R. Cullen, Michael D. Fryzuk, et al. "The chemistry of thujone. XII. The synthesis of pyrethroid analogues via chiral cyclopropanation." Canadian Journal of Chemistry 66, no. 12 (1988): 3108–15. http://dx.doi.org/10.1139/v88-479.

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An extensive study involving achiral and chiral cyclopropanation of various isoprenoid units derived from the monoterpene thujone is presented. Carbenoid intermediates generated from ethyl and L-menthyl diazoacetates and various achiral and chiral copper catalysts are employed to achieve the desired cyclopropanation reaction. It is shown that high levels of enantiomeric excess can be achieved, particularly when L-menthyl diazoacetate and a chiral catalyst are employed. The resultant products are then converted to pyrethroid-like analogues.

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11

Jin, Lei, Xiongyu Liang, Chengmao He, Tiejun Wang, Kun Liang, and Li Yu. "Plasmon—Assisted Resonance Energy Transfer Involving Electric and Magnetic Coupling." Electronics 13, no. 8 (2024): 1566. http://dx.doi.org/10.3390/electronics13081566.

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We develop a quantum theory based on macroscopic quantum electrodynamics to research the resonance energy transfer (RET) between a chiral donor and acceptor. It differs from the previous Green function approach which needs specific boundary conditions to obtain an analytical solution for calculating the RET rate. Our theory can combine the finite-difference time-domain (FDTD) method, which gives a simple and efficient semi-analytical approach, to evaluate the chiral RET rate in an arbitrary plasmonic nanosystem. Applying our theory to the systems of chiral molecules 3-methylcyclopentanone (3MC

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12

Zhang, Wanning, Hui Chang, Jing Ai, Shunai Che, Yingying Duan, and Lu Han. "Spontaneous chiral self-assembly of achiral AIEgens into AIEgen-silica hybrid nanotubes." Chemical Communications 55, no. 96 (2019): 14438–41. http://dx.doi.org/10.1039/c9cc06873b.

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13

Tanaka, Koichi, Takaichi Hiratsuka, Yuko Kojima, and Yasuko T. Osano. "Synthesis, Structure and Chiral Inclusion Crystallisation of Tetrakis(4-Ethynylphenyl)Ethylene Derivatives." Journal of Chemical Research 2002, no. 5 (2002): 209–12. http://dx.doi.org/10.3184/030823402103171889.

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Achiral host molecules, tetrakis(4-ethynylphenyl)ethylene 3 and tetrakis(4-bromoethynylphenyl)ethylene 4, formed chiral host–guest inclusion crystals with achiral guest molecules via weak intermolecular interactions.

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14

Lee, Yen, Boyeong Kang, and Jiwon Seo. "Metalloporphyrin Dimers Bridged by a Peptoid Helix: Host-Guest Interaction and Chiral Recognition." Molecules 23, no. 11 (2018): 2741. http://dx.doi.org/10.3390/molecules23112741.

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Co-facial porphyrins have been designed to construct porphyrin tweezers with versatile molecular recognition capabilities. In this study, we synthesized metalloporphyrin–peptoid conjugates (MPPCs) displaying two metalloporphyrins on a peptoid scaffold with either achiral unfolded (1) or helical (2 and 3) secondary structures. Host–guest complexation of MPPCs was realized with various guests of different lengths and basicities, and the extent of complexation was measured by UV-vis and circular dichroism (CD) spectroscopic titration. Intermolecular and intramolecular chirality induction were obs

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15

Memmer, Reiner, and Folkert Janssen. "Computer Simulation of Chiral Liquid Crystal Phases IX. Chiral Induction in Guest-host Systems - Calculation of the Helical Twisting Power." Zeitschrift für Naturforschung A 54, no. 12 (1999): 747–54. http://dx.doi.org/10.1515/zna-1999-1212.

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Abstract The chiral induction in liquid crystalline phases was studied by Monte Carlo simulation of the chiral Lebwohl-Lasher model. Binary guest-host systems composed of achiral and chiral molecules as well as of different chiral molecules were investigated in dependence on the composition. A cholesteric phase was induced by dissolving a small fraction of chiral molecules in a nematic phase. For dilute solutions the equilibrium pitch was found to be a linear function of the chiral dopant concentration. Independent of system size effects the application of self-determined boundary conditions e

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16

Destoop, Iris, Andrea Minoia, Oleksandr Ivasenko, et al. "Transfer of chiral information from a chiral solvent to a two-dimensional network." Faraday Discussions 204 (2017): 215–31. http://dx.doi.org/10.1039/c7fd00103g.

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Chiral induction in self-assembled monolayers has garnered considerable attention in the recent past, not only due to its importance in chiral resolution and enantioselective heterogeneous catalysis but also because of its relevance to the origin of homochirality in life. Here, we demonstrate the emergence of homochirality in a supramolecular low-density network formed by achiral molecules at the interface of a chiral solvent and an atomically-flat achiral substrate. We focus on the impact of structure and functionality of the adsorbate and the chiral solvent on the chiral induction efficiency

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17

Wang, Chao, Hua Hao, Daisuke Hashizume, and Keisuke Tajima. "Surface-induced enantiomorphic crystallization of achiral fullerene derivatives in thin films." Chemical Science 11, no. 18 (2020): 4702–8. http://dx.doi.org/10.1039/d0sc01163k.

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18

Alexandrov, Anatoly I., and Tamara V. Pashkova. "Structure Investigation of Mesogenic Homo- and Copolymers Based on Chiral and Achiral Acrylates." Liquid Crystals and their Application 23, no. 4 (2023): 82–93. http://dx.doi.org/10.18083/lcappl.2023.4.82.

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The X-ray diffraction method was used to study the structure of mesogenic homo- and copolymers based on chiral and achiral acrylates (disubstituted biphenyl and phenylbenzoate) under the orienting influence of magnetic and (in some cases) electric fields. The analysis of diffraction patterns was carried out in terms of the Hosemann model of a paracrystal using structural modeling and diffraction calculations on models. It was established that chiral and achiral homopolymers form smectic bilayer polar structures, but the structure of the achiral homopolymer possesses weak polarization due to sm

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19

Mislow, Kurt. "Absolute Asymmetric Synthesis: A Commentary." Collection of Czechoslovak Chemical Communications 68, no. 5 (2003): 849–64. http://dx.doi.org/10.1135/cccc20030849.

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Absolute asymmetric synthesis, i.e., the formation of enantiomerically enriched products from achiral precursors without the intervention of chiral chemical reagents or catalysts, is in practice unavoidable on statistical grounds alone. That random chance, combined with suitable amplification mechanisms, might ultimately account for biomolecular homochirality in Nature was recognized more than a century ago. Soai and collaborators have recently developed an asymmetric autocatalysis reaction that is capable of amplifying a tiny enantiomeric excess of far below 1% to yield a nearly enantiopure p

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20

Royes, Jorge, Víctor Polo, Santiago Uriel, Luis Oriol, Milagros Piñol, and Rosa M. Tejedor. "Chiral supramolecular organization from a sheet-like achiral gel: a study of chiral photoinduction." Physical Chemistry Chemical Physics 19, no. 21 (2017): 13622–28. http://dx.doi.org/10.1039/c7cp01739a.

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21

Liu, Yiyi, Tharaka Perera, Qianqian Shi, et al. "Thermoresponsive chiral plasmonic nanoparticles." Nanoscale 14, no. 11 (2022): 4292–303. http://dx.doi.org/10.1039/d1nr08343k.

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Poly(N-isopropylacrylamide) (PNIPAM) has been used to modify chiral plasmonic nanoparticles. The thermoresponsive studies reveal the impact of achiral dielectric nanoenvironment on chiral plasmonic responses.

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22

Zhang, Yingjie, and Jianping Deng. "Chiral helical polymer materials derived from achiral monomers and their chiral applications." Polymer Chemistry 11, no. 34 (2020): 5407–23. http://dx.doi.org/10.1039/d0py00934b.

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Helix-sense-selective polymerization (HSSP) of achiral monomers and chiral post-induction of racemic helical polymers provide two alternative approaches for constructing chiral helical polymer materials.

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23

Miao, Tengfei, Xiaoxiao Cheng, Haotian Ma, Wei Zhang, and Xiulin Zhu. "Induction, fixation and recovery of self-organized helical superstructures in achiral liquid crystalline polymer." Polymer Chemistry 12, no. 41 (2021): 5931–36. http://dx.doi.org/10.1039/d1py01206a.

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24

Wang, Xiongbin, Junjie Hao, Jiaji Cheng, et al. "Chiral CdSe nanoplatelets as an ultrasensitive probe for lead ion sensing." Nanoscale 11, no. 19 (2019): 9327–34. http://dx.doi.org/10.1039/c8nr10506e.

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Achiral CdSe NPLs could show chirality through ligand exchange with chiral cysteine molecules. Chiral CdSe NPLs were successfully applied as a chiral probe to detect lead ions with high sensitivity and selectivity.

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25

Li, Wenfang, Zeyuan Dong, Junyan Zhu, Quan Luo, and Junqiu Liu. "Spontaneous formation of organic helical architectures through dynamic covalent chemistry." Chem. Commun. 50, no. 94 (2014): 14744–47. http://dx.doi.org/10.1039/c4cc07263d.

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26

Park, Changjun, Jinhee Lee, Taehyoung Kim, et al. "Homochiral Supramolecular Thin Film from Self-Assembly of Achiral Triarylamine Molecules by Circularly Polarized Light." Molecules 25, no. 2 (2020): 402. http://dx.doi.org/10.3390/molecules25020402.

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Here, we report the formation of homochiral supramolecular thin film from achiral molecules, by using circularly polarized light (CPL) only as a chiral source, on the condition that irradiation of CPL does not induce a photochemical change of the achiral molecules. Thin films of self-assembled structures consisting of chiral supramolecular fibrils was obtained from the triarylamine derivatives through evaporation of the self-assembled triarylamine solution. The homochiral supramolecular helices with the desired handedness was achieved by irradiation of circularly polarized visible light during

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27

Ramamurthy. "Achiral Zeolites as Reaction Media for Chiral Photochemistry." Molecules 24, no. 19 (2019): 3570. http://dx.doi.org/10.3390/molecules24193570.

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Obtaining enantiomerically-enriched photoproducts from achiral reactants has been a long-sought goal. The various methods developed to achieve chiral induction in photoproducts during the last fifty years still suffer from a lack of predictability, generality, and simplicity. With the current emphasis on green chemistry, obtaining enantiomerically enriched products via photochemistry is a likely viable alternative for the future. Of the various approaches developed during the last three decades, the one pioneered in the author’s laboratory involved the use of commercially-available and inexpen

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28

Štěpánek, Petr, Ondřej Vích, Lukáš Werner, Ladislav Kniežo, Hana Dvořáková та Pavel Vojtíšek. "Stereoselective Preparation of Precursors of α-C-(1→3)-Disaccharides". Collection of Czechoslovak Chemical Communications 70, № 9 (2005): 1411–28. http://dx.doi.org/10.1135/cccc20051411.

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The stereoselectivity of cycloaddition of sugar-containing substituted 1-(thiazol-2-yl)but-2-en-1-ones 1 and vinyl ethers was studied using the achiral vinyl ether/chiral catalyst as well as the chiral vinyl ether/achiral catalyst combinations. It has been shown that Eu(fod)3-catalyzed cycloaddition of oxadienes 1a-1e with the chiral vinyl ethers 9 and 10 affords stereoselectively almost pure cycloadducts 11a-11e and 12a-12e, respectively. The obtained cycloadducts are suitable precursors for the synthesis of α-C-(1→3)-disaccharides, containing 2-deoxy-arabino-hexopyranose moiety of D- or L-co

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29

MU, WEIHUA, ANTHONY NICKOLAS VAMIVAKAS, YAN FANG, and BOLIN WANG. "PHONON DISPERSION IN CHIRAL SINGLE-WALL CARBON NANOTUBES." Modern Physics Letters B 21, no. 25 (2007): 1667–76. http://dx.doi.org/10.1142/s021798490701419x.

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The method to obtain phonon dispersion of achiral single-wall carbon nanotubes (SWNTs) from 6×6 matrix proposed by Mahan and Jeon7 has been extended to chiral SWNTs. The number of calculated phonon modes of a chiral SWNT (10, 1) is much larger than that of a zigzag one (10, 0) because the number of atoms in the translational unit cell of chiral SWNT is larger than that of an achiral one even though they have relative similar radius. The possible application of our approach to other models with more phonon potential terms beyond Mahan and Jeon's model is discussed.

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30

Imai, Yoshitane. "Generation of Circularly Polarized Luminescence by Symmetry Breaking." Symmetry 12, no. 11 (2020): 1786. http://dx.doi.org/10.3390/sym12111786.

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Circularly polarized luminescence (CPL) has attracted significant attention in the fields of chiral photonic science and optoelectronic materials science. In a CPL-emitting system, a chiral luminophore derived from chiral molecules is usually essential. In this review, three non-classical CPL (NC-CPL) systems that do not use enantiomerically pure molecules are reported: (i) supramolecular organic luminophores composed of achiral organic molecules that can emit CPL without the use of any chiral auxiliaries, (ii) achiral or racemic luminophores that can emit magnetic CPL (MCPL) by applying an ex

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31

Rusková, Renáta, and Dušan Račko. "Knot Formation on DNA Pushed Inside Chiral Nanochannels." Polymers 15, no. 20 (2023): 4185. http://dx.doi.org/10.3390/polym15204185.

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We performed coarse-grained molecular dynamics simulations of DNA polymers pushed inside infinite open chiral and achiral channels. We investigated the behavior of the polymer metrics in terms of span, monomer distributions and changes of topological state of the polymer in the channels. We also compared the regime of pushing a polymer inside the infinite channel to the case of polymer compression in finite channels of knot factories investigated in earlier works. We observed that the compression in the open channels affects the polymer metrics to different extents in chiral and achiral channe

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32

Fu, Jingke, Xiaohong Huo, Bowen Li, and Wanbin Zhang. "Cooperative bimetallic catalysis in asymmetric allylic substitution." Organic & Biomolecular Chemistry 15, no. 46 (2017): 9747–59. http://dx.doi.org/10.1039/c7ob02476b.

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33

Li, Hanbo, Xinshuang Gao, Chenqi Zhang, Yinglu Ji, Zhijian Hu, and Xiaochun Wu. "Gold-Nanoparticle-Based Chiral Plasmonic Nanostructures and Their Biomedical Applications." Biosensors 12, no. 11 (2022): 957. http://dx.doi.org/10.3390/bios12110957.

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As chiral antennas, plasmonic nanoparticles (NPs) can enhance chiral responses of chiral materials by forming hybrid structures and improving their own chirality preference as well. Chirality-dependent properties of plasmonic NPs broaden application potentials of chiral nanostructures in the biomedical field. Herein, we review the wet-chemical synthesis and self-assembly fabrication of gold-NP-based chiral nanostructures. Discrete chiral NPs are mainly obtained via the seed-mediated growth of achiral gold NPs under the guide of chiral molecules during growth. Irradiation with chiral light duri

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34

Zhang, Qingfeng, Taylor Hernandez, Kyle W. Smith, et al. "Unraveling the origin of chirality from plasmonic nanoparticle-protein complexes." Science 365, no. 6460 (2019): 1475–78. http://dx.doi.org/10.1126/science.aax5415.

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Plasmon-coupled circular dichroism has emerged as a promising approach for ultrasensitive detection of biomolecular conformations through coupling between molecular chirality and surface plasmons. Chiral nanoparticle assemblies without chiral molecules present also have large optical activities. We apply single-particle circular differential scattering spectroscopy coupled with electron imaging and simulations to identify both structural chirality of plasmonic aggregates and plasmon-coupled circular dichroism induced by chiral proteins. We establish that both chiral aggregates and just a few p

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35

Lee, Jae-Jin, and Suk-Won Choi. "Preferential Circularly Polarized Luminescence from a Nano-Segregated Liquid Crystalline Phase Using a Polymerized Twisted Nematic Platform." Polymers 12, no. 11 (2020): 2529. http://dx.doi.org/10.3390/polym12112529.

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In this study, a polymerized twisted nematic (TN) network was used as an extrinsic chiral platform to overcome the heterogeneity during spontaneous symmetry breaking in a mixed system comprising an achiral bent-core molecule and rod-like mesogen. The TN platform was prepared by photopolymerizing a reactive mesogen dispersed in a low molecular weight liquid crystal with TN orientation. The use of TN orientation to correct the degeneracy in bent-core molecular systems has been previously reported; however, to the best of our knowledge, this is the first study that uses an extrinsic chiral platfo

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36

Lee, Hyoung-In. "Spin–Orbital Coupling and Conservation Laws in Electromagnetic Waves Propagating through Chiral Media." Optics 4, no. 1 (2023): 100–131. http://dx.doi.org/10.3390/opt4010008.

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This study examines the characteristics of the electromagnetic waves that propagate through an unbounded space filled with a homogeneous isotropic chiral medium. The resulting characters are compared to those of the electromagnetic waves propagating through an achiral free space. To this goal, we form energy conservation laws for key bilinear parameters in a chiral case. Due to a nonzero medium chirality, conservation laws turn out to contain extra terms that are linked to the spin–orbit coupling, which is absent for an achiral case. In this way, we identified where the neat hierarchy exhibite

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37

Geng, Bin, Ling-Xiang Guo, Bao-Ping Lin, et al. "Side chain liquid crystalline polymers with an optically active polynorbornene backbone and achiral mesogenic side groups." Polymer Chemistry 6, no. 29 (2015): 5281–87. http://dx.doi.org/10.1039/c5py00651a.

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This work describes a series of side-on and end-on SCLCPs with an optically active polynorbornene main chain and achiral mesogens. The side-on SCLCPs tend to form achiral mesophases, while their comparative end-on analogues exhibit chiral mesophases.

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38

Reddy, Kumbam Lingeshwar, Jikson Pulparayil Mathew, Sonia Maniappan, et al. "Mandelic acid appended chiral gels as efficient templates for multicolour circularly polarized luminescence." Nanoscale 14, no. 13 (2022): 4946–56. http://dx.doi.org/10.1039/d1nr08506a.

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39

Fernández, Zulema, Berta Fernández, Emilio Quiñoá, Ricardo Riguera, and Félix Freire. "Chiral information harvesting in helical poly(acetylene) derivatives using oligo(p-phenyleneethynylene)s as spacers." Chemical Science 11, no. 27 (2020): 7182–87. http://dx.doi.org/10.1039/d0sc02685a.

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40

Harris, Robert A. "Chiral fluctuations in achiral systems." Journal of Chemical Physics 115, no. 23 (2001): 10577–80. http://dx.doi.org/10.1063/1.1427024.

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41

STINSON, STEPHEN. "Achiral ligands abet chiral catalysis." Chemical & Engineering News 78, no. 10 (2000): 14. http://dx.doi.org/10.1021/cen-v078n010.p014.

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42

Flack, Howard D. "Chiral and Achiral Crystal Structures." Helvetica Chimica Acta 86, no. 4 (2003): 905–21. http://dx.doi.org/10.1002/hlca.200390109.

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43

Nunez-Martinez, M., J. Dong, I. Garcia, and LM Liz-Marzan. "Chiroptical hybrid nanomaterials based on metal nanoparticles and biomolecules." Advances in Colloid and Interface Science 341 (March 28, 2025): 103501. https://doi.org/10.1016/j.cis.2025.103501.

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Chirality at the nanoscale has recently attracted renewed attention from the scientific community. As a result, various strategies have been proposed to develop chiral nanomaterials based on metal nanoparticles and chiral biomolecules such as DNA, amino acids, or proteins. We review herein the past and recent literature related to the functionalization of metal nanoparticles with various chiral biomolecules and their assembly into biomaterials with chiroptical response. We divide the review into two main parts, according to the class of biomolecules. We first discuss mechanisms employed to obt

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44

Mou, Qi, Ruyuan Zhao, Ruihan Niu, et al. "Cp*Ir(iii)/chiral carboxylic acid-catalyzed enantioselective C–H alkylation of ferrocene carboxamides with diazomalonates." Organic Chemistry Frontiers 8, no. 24 (2021): 6923–30. http://dx.doi.org/10.1039/d1qo01344k.

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An achiral Cp*Ir(iii)/chiral carboxylic acid-catalysed enantioselective C–H alkylation of ferrocene carboxamides with diazomalonates was achieved, providing planar chiral alkylated ferrocenes in up to 94 : 6 er.

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45

Bi, Yuting, Zongze Zhang, Jingjing Wei, and Zhijie Yang. "Enhanced Chirality Transfer in Self‐Assembled Nanocomposites Powered by A Trace Amount of Chiral Dimeric Molecules." Angewandte Chemie, November 21, 2024. http://dx.doi.org/10.1002/ange.202418997.

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Abstract:

AbstractChiral‐selective self‐assembly has markedly advanced the development of chiral materials. While the Sergeant and Soldiers principle allows for chirality amplification, it necessitates precise shape‐matching between chiral and achiral molecules, leading to a low chirality transfer efficiency‐where one chiral molecule influences the chirality of a limited number of achiral molecules. Here, we show that this efficiency can be markedly enhanced by introducing chiral dimeric molecules. In this work, a single chiral molecule can control the chirality of up to 200 achiral molecules and even d

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46

Bi, Yuting, Zongze Zhang, Jingjing Wei, and Zhijie Yang. "Enhanced Chirality Transfer in Self‐Assembled Nanocomposites Powered by A Trace Amount of Chiral Dimeric Molecules." Angewandte Chemie International Edition, November 21, 2024. http://dx.doi.org/10.1002/anie.202418997.

Full text

Abstract:

AbstractChiral‐selective self‐assembly has markedly advanced the development of chiral materials. While the Sergeant and Soldiers principle allows for chirality amplification, it necessitates precise shape‐matching between chiral and achiral molecules, leading to a low chirality transfer efficiency‐where one chiral molecule influences the chirality of a limited number of achiral molecules. Here, we show that this efficiency can be markedly enhanced by introducing chiral dimeric molecules. In this work, a single chiral molecule can control the chirality of up to 200 achiral molecules and even d

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47

Blue, Laura E. "One-Dimensional Simultaneous Achiral and Chiral Analysis." LCGC North America, August 1, 2022, 360–62. http://dx.doi.org/10.56530/lcgc.na.yy3879t6.

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Abstract:

Most molecules with therapeutic value have at least one chiral center, requiring resolution of both achiral and chiral impurities. Separate achiral and chiral methods are the most used methodologies, but two-dimensional (2D) methods and columns in series have also been implemented. Having a mixed-mode column that can provide both achiral and chiral resolution in one-dimension (1D) would significantly improve impurity profile understanding and reduce testing workload.

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48

Zhang, Jun, Kai Wu, Xiaoqing Gao, et al. "Achiral and chiral ligands synergistically harness chiral self-assembly of inorganics." Science Advances 10, no. 42 (2024). http://dx.doi.org/10.1126/sciadv.ado5948.

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Abstract:

Chiral structures and functions are essential natural components in biominerals and biological crystals. Chiral molecules direct inorganics through chiral growth of facets or screw dislocation of crystal clusters. As chirality promoters, they initiate an asymmetric hierarchical self-assembly in a quasi-thermodynamic steady state. However, achieving chiral assembly requires a delicate balance between intricate interactions. This complexity causes the roles of achiral-chiral and inorganic components in crystallization to remain ambiguous. Here, we elucidate a definitive mechanism using an achira

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49

Sureshan, Kana M., Divina Xavier, Sourav Pathak, and Christian R. Göb. "Absolute Asymmetric Synthesis of a Homochiral Polymer from an Achiral Monomer." Angewandte Chemie, June 16, 2025. https://doi.org/10.1002/ange.202510058.

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A compelling hypothesis for the origin of homochirality that led to the origin of life is that a chiral informational polymer, formed somehow from achiral monomers, biased the early chemical events, leading to the exclusive synthesis of chiral building blocks of life. However, the formation of a chiral polymer from achiral monomers continues to be a mystery. We exploited the ability of achiral molecules to rarely crystallize in chiral space groups to design achiral monomers for topochemical polymerization to obtain chiral polymers. One of such achiral monomers synthesized, viz. a tripeptide mo

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50

Sureshan, Kana M., Divina Xavier, Sourav Pathak, and Christian R. Göb. "Absolute Asymmetric Synthesis of a Homochiral Polymer from an Achiral Monomer." Angewandte Chemie International Edition, June 16, 2025. https://doi.org/10.1002/anie.202510058.

Full text

Abstract:

A compelling hypothesis for the origin of homochirality that led to the origin of life is that a chiral informational polymer, formed somehow from achiral monomers, biased the early chemical events, leading to the exclusive synthesis of chiral building blocks of life. However, the formation of a chiral polymer from achiral monomers continues to be a mystery. We exploited the ability of achiral molecules to rarely crystallize in chiral space groups to design achiral monomers for topochemical polymerization to obtain chiral polymers. One of such achiral monomers synthesized, viz. a tripeptide mo

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