A new trifunctional ligand, L(ala), containing a carboxylate donor group, a homochiral center derived from L-alanine and a strong pi-pi stacking, 1,8-naphthalimide synthon, has been used to prepare the copper(II) complex [Cu(L(ala))2(4,4'-bipy)(H2O)2].4.25H2O that has a homochiral, helical, supramolecular metal-organic framework 3-D structure, organized in one dimension solely by strong non-covalent forces.
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Angew Chem Int Ed Engl
December 2024
Shanghai Jiaotong University: Shanghai Jiao Tong University, School of Chemistry and Chemical Engineeringg, Dongchuan Road, Num 800, 200092, Shanghai, CHINA.
Circularly polarized luminescence (CPL) film attracted considerable attention in information storage and encryption, three-dimensional display, and chiral recognition. However, due to the limited molecular mobility within thin film, achieving a high asymmetry factor and non-contact modulation of CPL remain challenging. In this work, color-switchable homochiral CPL films with high luminescence asymmetry factor (glum~0.
View Article and Find Full Text PDFAdv Sci (Weinh)
December 2024
Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, China.
Circularly polarized light (CPL) is inherently chiral and is regarded as one possible source for the origin of homochirality. Coincidentally, chiral metal nanoparticles have great prospects in asymmetric photochemical reactions since they can enhance the chiral light-matter interactions. Nonetheless, little is known about how the spin angular momentum of light competes with the chiral electromagnetic field in the vicinity of a chiral nanoparticle during the chiral induction and amplification process.
View Article and Find Full Text PDFChem Sci
December 2024
Department Pharmazie, Ludwig-Maximilians-Universität München Butenandtstraße 5-13 Munich D-81377 Germany
Chemistry
November 2024
Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China.
Hierarchical self-assembly driven by non-covalent interactions is a prevalent strategy employed by nature to construct sophisticated biomacromolecules, such as proteins. However, the construction of protein-like superstructures that rely on weaker dispersion forces-driven hierarchical assembly remains largely unexplored. Here, we report the first example of dispersion forces driving the high-order assembly of the lanthanide trinuclear circular helicate [HNEt₃]₃[Eu₃(L)₆] (ΔΔΔ-1) into a protein-like lanthanide octamer ((ΔΔΔ-1)₈-2).
View Article and Find Full Text PDFAngew Chem Int Ed Engl
November 2024
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemical and Molecular Engineering, Peking University, Beijing, 100871, China.
Biological homochirality is a signature of life. Supramolecular polymerization is effective to achieve high hierarchical homochirality in nature, but has not been well-explored. Herein, we report regioselective and homochiral supramolecular polymerization of chiral nanotadpole aggregates made of either synthetic helical poly(phenylacetylene)s or chirality-amplified co-assembly of chiral and achiral poly(phenylacetylene)s.
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