Efficient Transfer of Chirality in Complex Hybrid Materials and Impact on Chirality-induced Spin Selectivity DOI Creative Commons
Md Anik Hossain, Sara Illescas‐Lopez, Md. Wazedur Rahman

et al.

Chemistry of Materials, Journal Year: 2024, Volume and Issue: 36(23), P. 11449 - 11461

Published: Nov. 20, 2024

Transfer of chirality, or transmission asymmetric information from one system to another, plays an essential role in fundamental biological and chemical processes and, therefore, is for life. This phenomenon also holds immense potential spintronics the context chirality-induced spin selectivity (CISS). In CISS, spatial arrangement chiral molecules influences state electrons during charge-transfer processes. chirality achiral material a hybrid environment enables induction polarization material, thus vastly expanding library CISS-active electronic materials. Such "induced" CISS signals could have different responses compared pure because properties come into play former case. addition, multiple sources can be used, which nontrivial contribution induced effect act either synergistically antagonistically. opens way achieving tunability via means. Earlier, such chirality-transfer resulting were demonstrated containing carbon nanotubes (CNTs) functionalized with agent (Fmoc-diphenylalanine l/d). this context, we extend result by investigating additional moiety (l-lysozyme enzyme crystals) system. Here, crystal surrounds chiral-functionalized CNTs, show that synergistic interactions more efficient transfer, changes effect. manifests form (a) stronger signal only single agent, (b) nonmonotonic temperature dependence sign reversal signal, (c) persistence at higher temperatures. Hybrid materials could, offer intricate control modification its constituents, not possible homogeneous systems sources.

Language: Английский

Selective crystallization of pyrazinamide polymorphs in supramolecular gels: Synergistic selectivity by mimetic gelator and solvent DOI Creative Commons
Qi Zhang, Yizhen Yan, Yisheng Xu

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 687, P. 582 - 588

Published: Feb. 16, 2025

A mimetic gelator designed to incorporate the chemical structure of pyrazinamide (PZA), a highly polymorphic drug, has been synthesized. Metastable Forms β and δ PZA were obtained from supramolecular gel phase crystallization in nitrobenzene DMSO, respectively, using bis(urea) mimic PZA. This is only known way access pure Form at room temperature. In contrast, concomitant mixture metastable polymorphs most thermodynamically stable form solution crystallization. By analyzing intermolecular interactions crystallization, it proposed that solvent can influence nucleation behavior by close interaction with carbonyl group select δ.

Language: Английский

Citations

0
Two-step sequential energy transfer in sodium carboxymethyl cellulose-based gels for information encryption DOI

Binbin Zhang,

Zhihai Peng,

Qiuyu He

et al.

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 305, P. 141157 - 141157

Published: Feb. 17, 2025

Language: Английский

Citations

0
A Tailored Graphene Supramolecular Gel for Pharmaceutical Crystallization DOI Creative Commons
Qi Zhang,

Martin A. Screen,

Leon Bowen

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A graphene-based supramolecular gel was designed and prepared to control the crystallization process polymorphism of pharmaceuticals. The gelators were modified at end segments with pyrene moieties, which spontaneously interact graphene surface by aromatic stacking interaction resulting in a graphene-incorporated linked noncovalent interactions between urea groups. When included into gel, critical concentration system rigidity changed significantly, fluorescence spectroscopy determined close π-π gelator graphene, material confirmed as true nanocomposite electron microscopy. Further oxidatively obtain hydroxylated (Gr-OH), successfully incorporated serve medium for pharmaceutical crystallization. Glycine (GLY), caffeine (CAF) aripiprazole (APZ) selected model drugs phase Gr-OH hybrid gels. Incorporation allowed hydrogen bonding drug molecules, different polymorphs GLY, CAF APZ compared solution shorter induction time native gel.

Language: Английский

Citations

0
Efficient Transfer of Chirality in Complex Hybrid Materials and Impact on Chirality-induced Spin Selectivity DOI Creative Commons
Md Anik Hossain, Sara Illescas‐Lopez, Md. Wazedur Rahman

et al.

Chemistry of Materials, Journal Year: 2024, Volume and Issue: 36(23), P. 11449 - 11461

Published: Nov. 20, 2024

Transfer of chirality, or transmission asymmetric information from one system to another, plays an essential role in fundamental biological and chemical processes and, therefore, is for life. This phenomenon also holds immense potential spintronics the context chirality-induced spin selectivity (CISS). In CISS, spatial arrangement chiral molecules influences state electrons during charge-transfer processes. chirality achiral material a hybrid environment enables induction polarization material, thus vastly expanding library CISS-active electronic materials. Such "induced" CISS signals could have different responses compared pure because properties come into play former case. addition, multiple sources can be used, which nontrivial contribution induced effect act either synergistically antagonistically. opens way achieving tunability via means. Earlier, such chirality-transfer resulting were demonstrated containing carbon nanotubes (CNTs) functionalized with agent (Fmoc-diphenylalanine l/d). this context, we extend result by investigating additional moiety (l-lysozyme enzyme crystals) system. Here, crystal surrounds chiral-functionalized CNTs, show that synergistic interactions more efficient transfer, changes effect. manifests form (a) stronger signal only single agent, (b) nonmonotonic temperature dependence sign reversal signal, (c) persistence at higher temperatures. Hybrid materials could, offer intricate control modification its constituents, not possible homogeneous systems sources.

Language: Английский

Citations

0