Chirality plays a key role in many fields of natural sciences as well as life sciences. Chiral materials are widely developed and used for electrochemical chiral recognition. In recent years, carbon quantum dots (CQDs) have been widely used as a novel carbon nanomaterial due to their excellent charge transfer properties, good biocompatibility, and low cost. The special structure of π-conjugated porphyrin attracts attention. Supramolecular self-assembly shows a way to construct chiral materials by self-assembling simple molecules into chiral composites. Herein, we demonstrate the self-assembly of achiral porphyrins induced by chiral carbon quantum dots assembled from L- and or D-tryptophan (L- and or D-Trp) with carbon quantum dots, resulting in 5,10,15,20-tetrakis (4-carboxyPheyl) (TCPP) self-assembled structure. The electrochemical chiral recognition of chiral self-assembled materials was studied using Phenylalanine (Phe) enantiomer as a chiral analyte. Electrochemical chiral recognition results showed that the chiral self-assembled materials induced by chiral templates have a good ability to discriminate Phe enantiomers. Therefore, this research provides a new idea for the synthesis of chiral composites and further expands applications to electrochemical chiral recognition.
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http://dx.doi.org/10.1007/s00604-022-05629-3 | DOI Listing |
Anal Chem
January 2025
College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China.
Introducing chiral molecules into metal-organic frameworks (MOFs) to obtain chiral MOFs (CMOFs), the tunability of their structures makes them a highly anticipated class of chiral materials for electrochemical sensing. However, the structure of CMOFs is often limited by synthesis challenges, and introducing chiral molecules into MOFs often leads to a decrease in their internal space. This study introduces a defect engineering strategy into the synthesis of CMOFs to obtain CMOFs with defects, which is an efficient synthesis method.
View Article and Find Full Text PDFChemistry
January 2025
Nankai University, College of Life Science, CHINA.
In vitro multi-enzyme synthesis pathways harness the core elements of cellular synthesis while simplifying the complexities of cellular processes, facilitating the production of high-value chemicals. However, these in vitro synthesis processes often operate like a "black box," with limited monitoring of each reaction step, leading to a low substrate conversion efficiency. In this study, we present an intelligent multi-enzyme molecular machine(iMEMM) as a model system for achieving the deracemization of D, L-phosphinothricin (D, L-PPT).
View Article and Find Full Text PDFAcc Chem Res
January 2025
State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
ConspectusIn recent years, our research group has dedicated significant effort to the field of asymmetric organometallic electrochemical synthesis (AOES), which integrates electrochemistry with asymmetric transition metal catalysis. On one hand, we have rationalized that organometallic compounds can serve as molecular electrocatalysts (mediators) to reduce overpotentials and enhance both the reactivity and selectivity of reactions. On the other hand, the conditions for asymmetric transition metal catalysis can be substantially improved through electrochemistry, enabling precise modulation of the transition metal's oxidation state by controlling electrochemical potentials and regulating the electron transfer rate via current adjustments.
View Article and Find Full Text PDFChem Commun (Camb)
January 2025
School of Marine Science and Engineering, Hainan University, Haikou, China.
Severe photogenerated charge carrier recombination involved in photocatalytic CO reduction leads to low photocatalytic efficiency. Here we demonstrate that a chiral hierarchical structure could facilitate charge separation in BiOBr, thus suppressing charge recombination and enhancing photocatalytic performance. Chiral helical flower-like BiOBr nanospheres were prepared a D/L-sorbitol-assisted hydrothermal process, exhibiting a 1.
View Article and Find Full Text PDFAnal Chem
January 2025
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
Designing alloys with intrinsic chirality for chiral analysis is an interesting subject, since most alloys are achiral. Here, a starfish-shaped AuCu alloy is facilely prepared through simultaneous reduction of chloroauric acid (HAuCl) and copper chloride (CuCl) by l-ascorbic acid (l-AA). The resultant AuCu alloy exhibits fascinating chirality due to the chiral lattice distortion generated in the alloy.
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