Guigen Li
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View article: Spontaneous Elliptical Polarization of Racemic Multilayer Polymers and Oligomers
Spontaneous Elliptical Polarization of Racemic Multilayer Polymers and Oligomers Open
It is well established that racemic molecules are optically inactive. In this study, we report the discovery of novel racemic multilayer polymers and oligomers generated through catalytic polymerization that exhibit the ability to asymmetr…
View article: The Synthesis and Property Study of NH-Ac-Anchored Multilayer 3D Polymers
The Synthesis and Property Study of NH-Ac-Anchored Multilayer 3D Polymers Open
This study reports the synthesis, characterization, and property analysis of four novel multilayer 3D polymers (1A to 1D) with 1,3-phenyl bridge architectures spanning 248 to 320 layers. High-molecular-weight polymers were successfully syn…
View article: Characterization of Chiral Thiophene Multilayer 3D Polymers with AIE Properties for Environmental Monitoring of Chromium Ions
Characterization of Chiral Thiophene Multilayer 3D Polymers with AIE Properties for Environmental Monitoring of Chromium Ions Open
This study reports the synthesis and characterization of novel thiophene‐based multilayer 3D chiral polymers incorporating methoxy and octyloxy functional groups. These polymers exhibit unique fluorescence properties, including a pronounce…
View article: Synthesis and Characterization of Multilayer 3D Chiral Polymers with Enhanced Optical Properties
Synthesis and Characterization of Multilayer 3D Chiral Polymers with Enhanced Optical Properties Open
This study reports the synthesis of novel multilayer 3D chiral polymers using 2,2′-(2,7-Naphthalenediyl)bis[4,4,5,5-tetramethyl-1,3,2-dioxaborolane] and 1,8-dibronaphthalene along with its derivatives as key precursors. Comprehensive chara…
View article: Enantiopure Turbo Chirality Targets in Tri-Propeller Blades: Design, Asymmetric Synthesis, and Computational Analysis
Enantiopure Turbo Chirality Targets in Tri-Propeller Blades: Design, Asymmetric Synthesis, and Computational Analysis Open
Enantiopure turbo chirality in small organic molecules, without other chiral elements, is a fascinating topic that has garnered significant interest within the chemical and materials science community. However, further research into and ap…
View article: Aggregation-induced emission in novel multilayered 3D polymers: development of a fluorescent probe for selective metal ion detection
Aggregation-induced emission in novel multilayered 3D polymers: development of a fluorescent probe for selective metal ion detection Open
This study presents the characterization of a novel multilayered three-dimensional (3D) polymer exhibiting aggregation-induced emission (AIE) properties when excited at a low wavelength of 280 nm.
View article: Exploring chiral and achiral properties of novel multilayer 3D polymers: synthesis and characterization
Exploring chiral and achiral properties of novel multilayer 3D polymers: synthesis and characterization Open
This study reports the novel synthesis of multilayered 3D polymers via the 1,3,5-position coupling of 1,3,5-tris(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene with 1,8-dibronaphthalene, a previously unreported method.
View article: Exploration of Alkyne-Based Multilayered 3D Polymers and Oligomers: Subtle Aggregation-Induced Emission, Chromium(VI) Ion Detection, and Chiral Properties Characterization
Exploration of Alkyne-Based Multilayered 3D Polymers and Oligomers: Subtle Aggregation-Induced Emission, Chromium(VI) Ion Detection, and Chiral Properties Characterization Open
This study investigates the synthesis and characterization of alkyne-based multilayered three-dimensional (3D) polymers, which exhibit a subtle aggregation-induced emission (AIE) phenomenon. The polymers demonstrate significant potential a…
View article: Discovery of Staircase Chirality through the Design of Unnatural Amino Acid Derivatives
Discovery of Staircase Chirality through the Design of Unnatural Amino Acid Derivatives Open
Chirality has garnered significant attention in the scientific community since its discovery by Louis Pasteur over a century ago. It has been showing a profound impact on chemical, biomedical, and materials sciences. Significant progress h…
View article: CCDC 2359934: Experimental Crystal Structure Determination
CCDC 2359934: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Spontaneous Elliptical Polarization of Racemic Multilayer Polymers and Oligomers
Spontaneous Elliptical Polarization of Racemic Multilayer Polymers and Oligomers Open
It is well-known that racemic molecules are elliptically inactive. Herein, we found novel racemic multilayer polymers and oligomers that are generated from catalytic polymerization can asymmetrically rotate the plane-polarized circular lig…
View article: C(sp)-C(sp) Lever-Based Targets of Orientational Chirality: Design and Asymmetric Synthesis
C(sp)-C(sp) Lever-Based Targets of Orientational Chirality: Design and Asymmetric Synthesis Open
In this study, the design and asymmetric synthesis of a series of chiral targets of orientational chirality were conducted by taking advantage of N-sulfinylimine-assisted nucleophilic addition and modified Sonogashira catalytic coupling sy…
View article: Cover Feature: Design and Asymmetric Control of Orientational Chirality by Using the Combination of C(sp<sup>2</sup>)‐C(sp) Levers and Achiral <i>N</i>‐Protecting Group (Chem. Eur. J. 28/2024)
Cover Feature: Design and Asymmetric Control of Orientational Chirality by Using the Combination of C(sp<sup>2</sup>)‐C(sp) Levers and Achiral <i>N</i>‐Protecting Group (Chem. Eur. J. 28/2024) Open
Two hands holding a molecule hint at chirality, which exists in three dimensions from the macro- to the micro-world. A new type of chirality is generated by rotating three functional groups to different orientations along an axis. An energ…
View article: Photoinduced radical tandem annulation of 1,7-diynes: an approach for divergent assembly of functionalized quinolin-2(1H)-ones
Photoinduced radical tandem annulation of 1,7-diynes: an approach for divergent assembly of functionalized quinolin-2(1H)-ones Open
The first photocatalytic trichloromethyl radical-triggered annulative reactions of amide-linked 1,7-diynes with polyhalomethanes were established for the flexible assembly of functionalized quinolin-2(1H)-ones with generally acceptable yie…
View article: Photocatalytic Multicomponent Annulation of Amide-Anchored 1,7-Diynes Enabled by Deconstruction of Bromotrichloromethane
Photocatalytic Multicomponent Annulation of Amide-Anchored 1,7-Diynes Enabled by Deconstruction of Bromotrichloromethane Open
We present the first example of visible-light-mediated multicomponent annulation of 1,7-diynes by taking advantage of quadruple cleavage olf carbon-halogen bonds of BrCCl3 to generate a C1 synthon, which was adeptly applied to the preparat…
View article: Amino Turbo Chirality and Its Asymmetric Control
Amino Turbo Chirality and Its Asymmetric Control Open
A series of new targets containing 3 chiral elements of central, orientational, and turbo chirality have been designed and synthesized asymmetrically. The absolute configurations and conformations of these types of chirality were concurren…
View article: Enantioselective synthesis of [1,1′-binaphthalene]-8,8′-diyl bis(diphenylphosphane) and its derivatives
Enantioselective synthesis of [1,1′-binaphthalene]-8,8′-diyl bis(diphenylphosphane) and its derivatives Open
A new chiral phosphine ligand and its diol derivative have been designed and synthesized asymmetrically.
View article: New multiple-layered 3D polymers showing aggregation-induced emission and polarization
New multiple-layered 3D polymers showing aggregation-induced emission and polarization Open
An exceptional achiral and chiral multilayer 3D polymer has been created and controlled by uniform and distinct aromatic chromophore units that are multiply sandwiched by naphthyl berths.
View article: Discovery of Staircase Chirality through the Design of Unnatural Amino Acid Derivatives
Discovery of Staircase Chirality through the Design of Unnatural Amino Acid Derivatives Open
Chirality has garnered significant attention in the scientific community since its discovery by Louis Pasteur over a century ago. It has been showing a profound impact on chemical, biomedical, and materials sciences. Significant progress h…
View article: Synthesis of dienes from pyrrolidines using skeletal modification
Synthesis of dienes from pyrrolidines using skeletal modification Open
Saturated N-heterocyclic pyrrolidines are common in natural products, medicinal compounds and agrochemicals. However, reconstruction of their skeletal structures creating new chemical space is a challenging task, and limited methods exist …
View article: Homogeneous and Recyclable Palladium Catalysts: Application in Suzuki–Miyaura Cross-Coupling Reactions
Homogeneous and Recyclable Palladium Catalysts: Application in Suzuki–Miyaura Cross-Coupling Reactions Open
This work demonstrates the use of catalytic systems that take advantage of a metalla-GAP strategy (GAP = group-assisted purification) in homogeneous catalysis. This discovery allows simple reclamation and reuse of homogeneous metal catalys…
View article: Four-layer folding framework: design, GAP synthesis, and aggregation-induced emission
Four-layer folding framework: design, GAP synthesis, and aggregation-induced emission Open
The design and synthesis of a type of [1 + 4 + 2] four-layer framework have been conducted by taking advantage of Suzuki–Miyaura cross-coupling and group-assisted purification (GAP) chemistry. The optimized coupling of double-layer diboron…
View article: A new chiral phenomenon of orientational chirality, its synthetic control and computational study
A new chiral phenomenon of orientational chirality, its synthetic control and computational study Open
A new type of chirality, orientational chirality, consisting of a tetrahedron center and a remotely anchored blocker, has been discovered. The key structural element of this chirality is characterized by multiple orientations directed by a…
View article: Aggregation-Induced Catalysis: Asymmetric Catalysis with Chiral Aggregates
Aggregation-Induced Catalysis: Asymmetric Catalysis with Chiral Aggregates Open
So far, there have been 4 methods to control chirality including the use of chiral auxiliaries, reagents, solvents, and catalysts documented in literature and textbooks. Among them, asymmetric catalysts are normally divided into homogeneou…
View article: Sodium Pre-Intercalation-Based Na3-δ-MnO2@CC for High-Performance Aqueous Asymmetric Supercapacitor: Joint Experimental and DFT Study
Sodium Pre-Intercalation-Based Na3-δ-MnO2@CC for High-Performance Aqueous Asymmetric Supercapacitor: Joint Experimental and DFT Study Open
Electrochemical energy storage devices are ubiquitous for personal electronics, electric vehicles, smart grids, and future clean energy demand. SCs are EES devices with excellent power density and superior cycling ability. Herein, we focus…
View article: Aggregation-Induced Polarization (AIP): Optical Rotation Amplification and Adjustment of Chiral Aggregates of Folding Oligomers and Polymers
Aggregation-Induced Polarization (AIP): Optical Rotation Amplification and Adjustment of Chiral Aggregates of Folding Oligomers and Polymers Open
The phenomenon of aggregation-induced polarization (AIP) was observed showing optical rotation amplification and adjustment. The relationship between optical rotations of chiral aggregates of multilayered chiral folding oligomers and polym…
View article: CCDC 2103145: Experimental Crystal Structure Determination
CCDC 2103145: Experimental Crystal Structure Determination Open
View article: Central-to-Folding Chirality Control: Asymmetric Synthesis of Multilayer 3D Targets With Electron-Deficient Bridges
Central-to-Folding Chirality Control: Asymmetric Synthesis of Multilayer 3D Targets With Electron-Deficient Bridges Open
New multilayer 3D chiral molecules have been designed and synthesized asymmetrically through the strategy of center-to-multilayer folding chirality control and double Suzuki couplings. Individual diastereoisomers were readily obtained and …
View article: Catalyst-Dependent Direct and Deoxygenative Coupling of Alcohols by Convergent Paired Electrolysis
Catalyst-Dependent Direct and Deoxygenative Coupling of Alcohols by Convergent Paired Electrolysis Open
Open AccessCCS ChemistryRESEARCH ARTICLE6 Jun 2022Catalyst-Dependent Direct and Deoxygenative Coupling of Alcohols by Convergent Paired Electrolysis Sheng Zhang, Jianxue Shi, Jingjing Li, Man-Bo Li, Guigen Li and Michael Findlater Sheng Zh…
View article: Asymmetric Catalytic Assembly of Triple‐Columned and Multilayered Chiral Folding Polymers Showing Aggregation‐Induced Emission (AIE)
Asymmetric Catalytic Assembly of Triple‐Columned and Multilayered Chiral Folding Polymers Showing Aggregation‐Induced Emission (AIE) Open
Invited for the cover of this issue are Guigen Li's groups at Texas Tech University and Nanjing University. The cover artwork shows that chirality patterns exist from universal to molecular levels showing light emission properties. Read th…