1
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Xu T, Wang JY, Wang Y, Jin S, Tang Y, Zhang S, Yuan Q, Liu H, Yan W, Jiao Y, Yang XL, Li G. C(sp)-C(sp) Lever-Based Targets of Orientational Chirality: Design and Asymmetric Synthesis. Molecules 2024; 29:2274. [PMID: 38792134 PMCID: PMC11123770 DOI: 10.3390/molecules29102274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
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 systems. Orientational isomers were controlled completely using alkynyl/alkynyl levers [C(sp)-C(sp) axis] with absolute configuration assignment determined by X-ray structural analysis. The key structural element of the resulting orientational chirality is uniquely characterized by remote through-space blocking. Forty examples of multi-step synthesis were performed, with modest to good yields and excellent orientational selectivity. Several chiral orientational amino targets are attached with scaffolds of natural and medicinal products, showing potential pharmaceutical and medical applications in the future.
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Affiliation(s)
- Ting Xu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China; (T.X.); (Y.W.); (S.J.)
| | - Jia-Yin Wang
- Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, School of Pharmacy, Changzhou University, Changzhou 213164, China;
| | - Yu Wang
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China; (T.X.); (Y.W.); (S.J.)
| | - Shengzhou Jin
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China; (T.X.); (Y.W.); (S.J.)
| | - Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA; (Y.T.); (S.Z.); (Q.Y.); (H.L.)
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA; (Y.T.); (S.Z.); (Q.Y.); (H.L.)
| | - Qingkai Yuan
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA; (Y.T.); (S.Z.); (Q.Y.); (H.L.)
| | - Hao Liu
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA; (Y.T.); (S.Z.); (Q.Y.); (H.L.)
| | - Wenxin Yan
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecular, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; (W.Y.); (Y.J.)
| | - Yinchun Jiao
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecular, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; (W.Y.); (Y.J.)
| | - Xiao-Liang Yang
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China; (T.X.); (Y.W.); (S.J.)
| | - Guigen Li
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China; (T.X.); (Y.W.); (S.J.)
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA; (Y.T.); (S.Z.); (Q.Y.); (H.L.)
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2
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Zhang S, Yuan Q, Li G. New multiple-layered 3D polymers showing aggregation-induced emission and polarization. RSC Adv 2024; 14:13342-13350. [PMID: 38660524 PMCID: PMC11040433 DOI: 10.1039/d4ra02128b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 04/18/2024] [Indexed: 04/26/2024] Open
Abstract
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. In order to put together this assembly, it was necessary to search for new catalytic Suzuki-Miyaura polycouplings among various catalytic systems, monomers, and catalysts. Gel Permeation Chromatography (GPC) was able to verify the presence of many framework layers. The resulting achiral and chiral polymers displayed notable optical characteristic.
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Affiliation(s)
- Sai Zhang
- School of Pharmacy, Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University Changzhou Jiangsu 213164 China
| | - Qingkai Yuan
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
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3
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Tang Y, Yuan Q, Zhang S, Wang JY, Surowiec K, Li G. Enantioselective synthesis of [1,1'-binaphthalene]-8,8'-diyl bis(diphenylphosphane) and its derivatives. RSC Adv 2024; 14:2792-2795. [PMID: 38234866 PMCID: PMC10792274 DOI: 10.1039/d3ra07956b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 01/04/2024] [Indexed: 01/19/2024] Open
Abstract
Two 8,8' disubstituted binaphthyl ligands have been designed and synthesized in 3.1% and 11.4% overall yield, respectively. X-ray structure analysis demonstrated that a unique chiral microenvironment was created. With the assistance of a new aggregation-induced polarization (AIP) technology, chiral aggregates were determined as the fraction of polar solvent increased in the nonpolar/polar solvent system, which indicated their potential in modern asymmetric synthesis and catalysis.
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Affiliation(s)
- Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
| | - Qingkai Yuan
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
| | - Jia-Yin Wang
- School of Pharmacy, Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University Changzhou Jiangsu 213164 China
| | - Kazimierz Surowiec
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
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4
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Zhang S, Chen D, Wang JY, Yan S, Li G. Four-layer folding framework: design, GAP synthesis, and aggregation-induced emission. Front Chem 2023; 11:1259609. [PMID: 37638105 PMCID: PMC10450629 DOI: 10.3389/fchem.2023.1259609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 07/27/2023] [Indexed: 08/29/2023] Open
Abstract
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 diboronic esters with 1-bromo-naphth-2-yl phosphine oxides resulted in a series of multilayer folding targets, showing a broad scope of substrates and moderate to excellent yields. The final products were purified using group-assisted purification chemistry/technology, achieved simply by washing crude products with 95% EtOH without the use of chromatography and recrystallization. The structures were fully characterized and assigned by performing X-ray crystallographic analysis. UV-vis absorption, photoluminescence (PL), and aggregation-induced emission (AIE) were studied for the resulting multilayer folding products.
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Affiliation(s)
- Sai Zhang
- Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University, Changzhou, Jiangsu, China
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Daixiang Chen
- Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University, Changzhou, Jiangsu, China
| | - Jia-Yin Wang
- Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University, Changzhou, Jiangsu, China
| | - Shenghu Yan
- Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University, Changzhou, Jiangsu, China
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
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5
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Wang JY, Zhang S, Yuan Q, Li G, Yan S. Catalytic Radical-Triggered Annulation/Iododifluoromethylation of Enynones for the Stereospecific Synthesis of 1-Indenones. J Org Chem 2023. [PMID: 37220028 DOI: 10.1021/acs.joc.3c00471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A new Pd(II)-catalyzed annulation/iododifluoromethylation of enynones has been developed for the synthesis of versatile 1-indanones with moderate to good yields (26 examples). The present strategy enabled the concomitant incorporation of two important difluoroalkyl and iodo functionalities into 1-indenone skeletons with (E)-stereoselectivity. The mechanistic pathway was proposed, consisting of the difluoroalkyl radical-triggered α,β-conjugated addition/5-exo-dig cyclization/metal radical cross-coupling/reductive elimination cascade.
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Affiliation(s)
- Jia-Yin Wang
- School of Pharmacy, Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
| | - Qingkai Yuan
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
| | - Shenghu Yan
- School of Pharmacy, Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University, Changzhou, Jiangsu 213164, China
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6
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Jin S, Xu T, Tang Y, Wang JY, Wang Y, Pan J, Zhang S, Yuan Q, Rahman AU, Aquino AJA, Lischka H, Li G. A new chiral phenomenon of orientational chirality, its synthetic control and computational study. Front Chem 2023; 10:1110240. [PMID: 36688043 PMCID: PMC9850238 DOI: 10.3389/fchem.2022.1110240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 12/19/2022] [Indexed: 01/07/2023] Open
Abstract
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 through-space functional group. The multi-step synthesis of orientational chiral targets was conducted by taking advantage of asymmetric nucleophilic addition, Suzuki-Miyaura cross-coupling and Sonogashira coupling. An unprecedented catalytic species showing a five-membered ring consisting of C (sp2)-Br-Pd-C (sp2) bonds was isolated during performing Suzuki-Miyaura cross-coupling. X-ray diffraction analysis confirmed the species structure and absolute configuration of chiral orientation products. Based on X-ray structures, a model was proposed for the new chirality phenomenon to differentiate the present molecular framework from previous others. DFT computational study presented the relative stability of individual orientatiomers. This discovery would be anticipated to result in a new stereochemistry branch and to have a broad impact on chemical, biomedical, and material sciences in the future.
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Affiliation(s)
- Shengzhou Jin
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Ting Xu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Jia-Yin Wang
- Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University, Changzhou, Jiangsu, China
| | - Yu Wang
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Junyi Pan
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Qingkai Yuan
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Anis Ur Rahman
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Adelia J. A. Aquino
- Department of Mechanical Engineering, Texas Tech University, Lubbock, TX, United States
| | - Hans Lischka
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States,*Correspondence: Guigen Li, ; Hans Lischka,
| | - Guigen Li
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China,Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States,*Correspondence: Guigen Li, ; Hans Lischka,
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7
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Dual switch of helicity and fluorescent emission in amphiphilic glutamide Pyridine-Cyanostilbene based supramolecular gel. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Tang Y, Yuan Q, Wang Y, Zhang S, Wang JY, Jin S, Xu T, Pan J, Guilbeau CR, Pleasant AJ, Li G. Aggregation-induced polarization (AIP) of derivatives of BINOL and BINAP. RSC Adv 2022; 12:29813-29817. [PMID: 36321081 PMCID: PMC9578015 DOI: 10.1039/d2ra05597j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 10/04/2022] [Indexed: 11/17/2022] Open
Abstract
The relationship between optical rotations of small chiral molecules with water% in THF has been established. The typical aggregation co-solvent systems resulted in optical rotation amplification and adjustment, defined as aggregation-induced polarization (AIP). The AIP work can serve as a new tool to determine molecular aggregation, especially for those that cannot display aggregation-induced emission (AIE). Therefore, AIP and AIE are anticipated to complement each other. In addition, AIP can also serve as a new transmission tool providing adjusting right- or left-hand polarized lights of a series of individual wavelengths. Since chiral phosphine derivatives are among the most important ligands, this work would benefit research using chiral aggregates to control asymmetric synthesis and catalysts. Therefore, it will find many applications in chemical and materials sciences.
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Affiliation(s)
- Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech UniversityLubbock 79409-1061TexasUSA
| | - Qingkai Yuan
- Department of Chemistry and Biochemistry, Texas Tech UniversityLubbock 79409-1061TexasUSA
| | - Yu Wang
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing UniversityNanjing210093China
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech UniversityLubbock 79409-1061TexasUSA
| | - Jia-Yin Wang
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing UniversityNanjing210093China,Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou UniversityChangzhouJiangsu 213164China
| | - Shengzhou Jin
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing UniversityNanjing210093China
| | - Ting Xu
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing UniversityNanjing210093China
| | - Junyi Pan
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing UniversityNanjing210093China
| | - Collin Ray Guilbeau
- Department of Chemistry and Biochemistry, Texas Tech UniversityLubbock 79409-1061TexasUSA
| | - Alyssa Jenae Pleasant
- Department of Chemistry and Biochemistry, Texas Tech UniversityLubbock 79409-1061TexasUSA
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech UniversityLubbock 79409-1061TexasUSA,Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing UniversityNanjing210093China
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9
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Tang Y, Zhang S, Xu T, Yuan Q, Wang JY, Jin S, Wang Y, Pan J, Griffin I, Chen D, Li G. Aggregation-Induced Polarization (AIP): Optical Rotation Amplification and Adjustment of Chiral Aggregates of Folding Oligomers and Polymers. Front Chem 2022; 10:962638. [PMID: 36034657 PMCID: PMC9413080 DOI: 10.3389/fchem.2022.962638] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 06/24/2022] [Indexed: 11/13/2022] Open
Abstract
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 polymers with water% in THF (fw) has been established accordingly. New multilayered chiral oligomers were synthesized under the asymmetric catalytic systems established by our laboratory recently. These products were well-characterized by UV-vis, NMR, and MALDI-TOF spectra. Absolute stereochemistry (enantio- and diastereochemistry) was assigned by comparison with similar asymmetric induction by the same catalyst in our previous reactions. The present AIP work can serve as a new tool to determine chiral aggregates, especially for those that cannot display emission. AIP would also complement AIE-based CPL since AIP serves as a new tool providing enhanced right- or left-hand polarized lights with individual wavelengths. It will find many applications in chemical and materials science in the future.
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Affiliation(s)
- Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Ting Xu
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Qingkai Yuan
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Jia-Yin Wang
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Shengzhou Jin
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Yu Wang
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Junyi Pan
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Isaac Griffin
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Daixiang Chen
- Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University, Changzhou, China
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
- *Correspondence: Guigen Li,
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10
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Rouh H, Tang Y, Xu T, Yuan Q, Zhang S, Wang JY, Jin S, Wang Y, Pan J, Wood HL, McDonald JD, Li G. Aggregation-Induced Synthesis (AIS): Asymmetric Synthesis via Chiral Aggregates. Research (Wash D C) 2022; 2022:9865108. [PMID: 36061818 PMCID: PMC9394053 DOI: 10.34133/2022/9865108] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 07/25/2022] [Indexed: 11/26/2022] Open
Abstract
A new chiral aggregate-based tool for asymmetric synthesis has been developed by taking advantage of chiral aggregates of GAP (Group-Assisted Purification) reagents, N-phosphonyl imines. This tool was proven to be successful in the asymmetric GAP synthesis of functionalized 2,3-dihydrobenzofurans by reacting salicyl N-phosphonyl imines with dialkyl bromomalonates in various cosolvent systems. The chiral induction can be controlled by differentiating between two asymmetric directions simply by changing the ratios of cosolvents which are commonly adopted in AIE (aggregation-induced emission) systems. The formation of chiral aggregates was witnessed by a new analytical tool—aggregation-induced polarization (AIP). The present synthetic method will be broadly extended for general organic synthesis, particularly, for asymmetric synthesis and asymmetric catalysis in the future.
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Affiliation(s)
- Hossein Rouh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Ting Xu
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Qingkai Yuan
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Jia-Yin Wang
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Shengzhou Jin
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Yu Wang
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Junyi Pan
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Hannah L. Wood
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - James D. McDonald
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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11
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Lai YS, Chen YL, Lin CC, Su YH. Ultrafast chiral peptides purification via surface plasmon enhanced spin selectivity. Biosens Bioelectron 2022; 211:114339. [PMID: 35588636 DOI: 10.1016/j.bios.2022.114339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/02/2022] [Indexed: 11/17/2022]
Abstract
By D-arginine and L-arginine chiral peptides induced spin selectivity and Au NPs enhanced spin polarization, chiral peptides purification has been effectively simplified and the purification performance has raised from a mixture system. The angular momentums of light are operated by the polarizer and wave plates. Au NPs decorated ZnO nanorods electrodes are utilized to modulate the polarization of spintronic. Seed growth methods are for synthesizing spherical Au NPs. UV light reduction methods are for urchin-liked Au NPs. Au NPs are decorated on ZnO nanorods electrodes for rising photon to electron conversion efficiency and enhancing spin polarization rates by surface plasmon effect. From our results, photon to the electron conversion efficiency of ZnO nanorods electrodes has effectively enhanced by urchin-liked Au NPs decorating. Ultrahigh localized plasmon conversion efficiency as high as 60% was also obtained. Besides, density functional theory (DFT) calculations simulated the force on spintronic. Since the D-arginine and L-arginine are on Au substrate, DFT results demonstrate different angular momentum and spin polarization coupling. Along with urchin-liked Au NPs rising chiral induced spin polarization by surface plasmon resonance, the sensitivity of chiral arginine has been raised around 5000% from bare ZnO nanorods electrodes. The purification and separation time of a specific chiral arginine only needs 5 min.
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Affiliation(s)
- Yi-Sheng Lai
- Department of Material Science and Engineering, National Cheng Kung University, Taiwan
| | - Yu-Lin Chen
- Department of Material Science and Engineering, National Cheng Kung University, Taiwan
| | - Chia-Chun Lin
- Department of Material Science and Engineering, National Cheng Kung University, Taiwan
| | - Yen-Hsun Su
- Department of Material Science and Engineering, National Cheng Kung University, Taiwan.
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12
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Qu C, Deng S, Cheng Q, Jiao Y, Tang Z, Liu W. Theoretical study on aggregation-induced emission of new multi-layer 3D chiral molecules. MOLECULAR SIMULATION 2022. [DOI: 10.1080/08927022.2022.2068800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Chenxi Qu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
| | - Shuang Deng
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
| | - Qi Cheng
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
| | - Yinchun Jiao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecular, Ministry of Education, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
| | - Zilong Tang
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecular, Ministry of Education, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
| | - Wanqiang Liu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecular, Ministry of Education, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan University of Science and Technology, Xiangtan, People’s Republic of China
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13
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Tang Y, Wu G, Jin S, Liu Y, Ma L, Zhang S, Rouh H, Ali AIM, Wang JY, Xu T, Unruh D, Surowiec K, Li G. From Center-to-Multilayer Chirality: Asymmetric Synthesis of Multilayer Targets with Electron-Rich Bridges. J Org Chem 2022; 87:5976-5986. [PMID: 35442684 DOI: 10.1021/acs.joc.2c00234] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Asymmetric synthesis of new atropisomerically multilayered chiral targets has been achieved by taking advantage of the strategy of center-to-multilayer chirality and double Suzuki-Miyaura couplings. Diastereomers were readily separated via flash column chromatography and well characterized. Absolute configuration assignment was determined by X-ray structural analysis. Five enantiomerically pure isomers possessing multilayer chirality were assembled utilizing anchors involving electron-rich aromatic connections. An overall yield of 0.69% of the final target with hydroxyl attachment was achieved over 11 steps from commercially available starting materials.
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Affiliation(s)
- Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Guanzhao Wu
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Shengzhou Jin
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Yangxue Liu
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Liulei Ma
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Hossein Rouh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Ahmed I M Ali
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Jia-Yin Wang
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Ting Xu
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Daniel Unruh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Kazimierz Surowiec
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States.,Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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14
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Jin S, Wang JY, Tang Y, Rouh H, Zhang S, Xu T, Wang Y, Yuan Q, Chen D, Unruh D, Li G. Central-to-Folding Chirality Control: Asymmetric Synthesis of Multilayer 3D Targets With Electron-Deficient Bridges. Front Chem 2022; 10:860398. [PMID: 35433628 PMCID: PMC9010227 DOI: 10.3389/fchem.2022.860398] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 03/07/2022] [Indexed: 11/25/2022] Open
Abstract
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 separated via flash column chromatography. The key diastereoisomer was further converted into corresponding enantiomers. These enantiomers possess electron-deficient aromatic bridges layered with top and bottom aromatic scaffolds. X-ray structural analysis has unambiguously confirmed the configuration, and intermolecular packing results in regular planar patterns in solid crystals. The synthesis was achieved in a total of ten steps starting from commercially available starting materials.
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Affiliation(s)
- Shengzhou Jin
- School of Chemistry and Chemical Engineering, Institute of Chemistry and BioMedical Sciences, Nanjing University, Nanjing, China
| | - Jia-Ying Wang
- School of Chemistry and Chemical Engineering, Institute of Chemistry and BioMedical Sciences, Nanjing University, Nanjing, China
| | - Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Hossein Rouh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Ting Xu
- School of Chemistry and Chemical Engineering, Institute of Chemistry and BioMedical Sciences, Nanjing University, Nanjing, China
| | - Yu Wang
- School of Chemistry and Chemical Engineering, Institute of Chemistry and BioMedical Sciences, Nanjing University, Nanjing, China
| | - Qingkai Yuan
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Daixiang Chen
- Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University, Changzhou, China
| | - Daniel Unruh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Guigen Li
- School of Chemistry and Chemical Engineering, Institute of Chemistry and BioMedical Sciences, Nanjing University, Nanjing, China
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
- *Correspondence: Guigen Li,
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15
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Rouh H, Tang Y, Zhang S, Ali AIM, Surowiec K, Unruh D, Li G. Asymmetric [4 + 2] cycloaddition synthesis of 4 H-chromene derivatives facilitated by group-assisted-purification (GAP) chemistry. RSC Adv 2021; 11:39790-39796. [PMID: 35494146 PMCID: PMC9044656 DOI: 10.1039/d1ra08323f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 12/06/2021] [Indexed: 12/13/2022] Open
Abstract
In this work, we present a strategy for the preparation of functionalized 4H-chromene derivatives via a Cs2CO3-catalyzed [4 + 2] cycloaddition of enantiopure chiral salicyl N-phosphonyl imines with allenoates. Fifteen examples were achieved in excellent yields and diastereoselectivity. The products were purified simply by washing the crude mixture with hexanes following the Group-Assisted Purification (GAP) chemistry/technology to bypass traditional separation methods. The absolute configuration was unambiguously determined by X-ray structure analysis. A new asymmetric method for the synthesis of highly functionalized 4H-chromenes was developed via Group-Assisted Purification (GAP) chemistry and shown in good to high yield and excellent diastereoselectivity.![]()
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Affiliation(s)
- Hossein Rouh
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
| | - Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
| | - Ahmed I M Ali
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
| | - Kazimierz Surowiec
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
| | - Daniel Unruh
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock Texas 79409-1061 USA
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16
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Rahman AU, Zarshad N, Khan I, Faiz F, Li G, Ali A. Regio- and Diastereoselective Vicinal Aminobromination of Electron Deficient Olefins via Phosphorus-Based GAP Protocol. Front Chem 2021; 9:742399. [PMID: 34568286 PMCID: PMC8456122 DOI: 10.3389/fchem.2021.742399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 08/09/2021] [Indexed: 11/24/2022] Open
Abstract
Chemical synthesis based on Group-Assisted Purification chemistry (GAP) has been prolifically used as a powerful, greener and ecofriendly tool so far. Herein, we report hypervalent iodine (III) mediated regio- and diastereoselective aminobromination of electron-deficient olefins using group-assisted purification (GAP) method. By simply mixing the GAP auxiliary-anchored substrates with TsNH2-NBS as nitrogen/bromine sources and PhI(OAc)2 as a catalyst, a series of vicinal bromoamines with multifunctionalities were obtained in moderate to excellent yields (53-94%). The vicinal bromoamines were obtained without column chromatography and/or recrystallization simply by washing the crude mixtures with cosolvents and thus avoiding wastage of silica, solvents, time, and labor. The GAP auxiliary is recyclable and reusable.
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Affiliation(s)
- Anis Ur Rahman
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Nighat Zarshad
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, China
| | - Iltaf Khan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, China
| | - Faisal Faiz
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, China
| | - Guigen Li
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Asad Ali
- Department of Chemistry, Faculty of Chemical and Life Sciences, Abdul Wali Khan University, Mardan, Pakistan
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17
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Wang JY, Li G, Hao WJ, Jiang B. Enantio- and Regioselective CuH-Catalyzed Conjugate Reduction of Yne-Allenones. Org Lett 2021; 23:3828-3833. [PMID: 33955758 DOI: 10.1021/acs.orglett.1c00892] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new asymmetric catalytic conjugate reduction of yne-allenones to synthesize enantioenriched cyclobuta[a]naphthalen-4(2H)-ones has been established that uses copper-bisphosphine complexes as catalysts and gives excellent regio- and enantioselectivities (≥99% ee) in most cases. This protocol tolerates a broad scope of substrates, exhibits high compatibility with various substituents, and gives excellent stereoselectivity, providing a catalytic and efficient entry to fabrication of synthetically important chiral 6-6-4 tricarbocyclic scaffolds.
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Affiliation(s)
- Jia-Yin Wang
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Guigen Li
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.,Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
| | - Wen-Juan Hao
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Bo Jiang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China
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18
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Wu G, Liu Y, Yang Z, Ma L, Tang Y, Zhao X, Rouh H, Zheng Q, Zhou P, Wang JY, Siddique F, Zhang S, Jin S, Unruh D, Aquino AJA, Lischka H, Hutchins KM, Li G. Triple-Columned and Multiple-Layered 3D Polymers: Design, Synthesis, Aggregation-Induced Emission (AIE), and Computational Study. RESEARCH (WASHINGTON, D.C.) 2021; 2021:3565791. [PMID: 33629070 PMCID: PMC7888304 DOI: 10.34133/2021/3565791] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/21/2020] [Indexed: 12/22/2022]
Abstract
Conjugated polymers and oligomers have great potentials in various fields, especially in materials and biological sciences because of their intriguing electronic and optoelectronic properties. In recent years, the through-space conjugation system has emerged as a new assembled pattern of multidimensional polymers. Here, a novel series of structurally condensed multicolumn/multilayer 3D polymers and oligomers have been designed and synthesized through one-pot Suzuki polycondensation (SPC). The intramolecularly stacked arrangement of polymers can be supported by either X-ray structural analysis or computational analysis. In all cases, polymers were obtained with modest to good yields, as determined by GPC and 1H-NMR. MALDI-TOF analysis has proven the speculation of the step-growth process of this polymerization. The computational study of ab initio and DFT calculations based on trimer and pentamer models gives details of the structures and the electronic transition. Experimental results of optical and AIE research confirmed by calculation indicates that the present work would facilitate the research and applications in materials.
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Affiliation(s)
- Guanzhao Wu
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Yangxue Liu
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Zhen Yang
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Liulei Ma
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Xianliang Zhao
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Hossein Rouh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Qixuan Zheng
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Peng Zhou
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Jia-Yin Wang
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Farhan Siddique
- School of Pharmaceutical Sciences and Technology, Tianjin University, Tianjin 300072, China
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Shengzhou Jin
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Daniel Unruh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Adelia J. A. Aquino
- School of Pharmaceutical Sciences and Technology, Tianjin University, Tianjin 300072, China
- Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409, USA
| | - Hans Lischka
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
- School of Pharmaceutical Sciences and Technology, Tianjin University, Tianjin 300072, China
| | - Kristin M. Hutchins
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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19
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Zhao T, Han J, Duan P, Liu M. New Perspectives to Trigger and Modulate Circularly Polarized Luminescence of Complex and Aggregated Systems: Energy Transfer, Photon Upconversion, Charge Transfer, and Organic Radical. Acc Chem Res 2020; 53:1279-1292. [PMID: 32649172 DOI: 10.1021/acs.accounts.0c00112] [Citation(s) in RCA: 142] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Chiral functional materials with circularly polarized luminescence (CPL) have risen rapidly in recent years because of their fascinating characteristics and potential applications in various research fields. CPL refers to the differential spontaneous emission of left (L)- and right (R)-handed circularly polarized light upon photon or electron excitation. Generally, an outstanding CPL-active material needs to possess a high luminescence dissymmetry factor (glum) (defined as 2(IL - IR)/(IL + IR) where I is the emission intensity), which is between -2 and +2. Although the exciting development in CPL-active materials was achieved, the modulation of CPL signs is still a challenge. For small organic systems, a relatively small glum value, one of the key parameters of CPL, limits their practical applications. Searching for efficient approaches for amplifying glum is important. Therefore, over the past decades, besides optimizing the structure of small molecules, many other strategies to obtain efficient CPL-active materials have been developed. For instance, self-assembly has been well demonstrated as an effective approach to amplify the supramolecular chirality as well as the glum values. On the other hand, chiral liquid crystals (CLCs), which are capable of selective reflection of left- and right-handed circularly polarized light, also to serve as a host matrix for endowing guest emitters with CPL activity and high glum values. However, self-assembly focuses on modulating the conformation and spatial arrangement of chiral emitters. And the CPL of a luminophore-doped CLC matrix depends on the helix pitch and band gap positions. Lately, novel photophysical approaches to modulate CPL signs have gradually emerged.In this Account, we discuss the recent progress of excited-state-regulation involved CPL-active materials. The emergence, amplification, and inversion of CPL can be adjusted through regulation of the excited state of chiral emitters. For example, Förster resonance energy transfer (FRET) can amplify the glum values of chiral energy acceptors in chiral supramolecular assemblies. By combining the concepts of photon upconversion and CPL, high-energy upconverted circularly polarized emission was achieved under excitation of low-energy light, accompanied by an amplified glum. In addition, the organic systems with unpaired electrons, i.e., charge transfer (CT) system and open-shell π-radical, show favorable CPL properties, which can be flexibly tuned with an applied magnetic field. It should be noted that these photophysical process are associated with the excited state of chiral emitters. So far, while the main focus is on the regulation of the molecular and supramolecular nanostructures, direct regulation of the excited state of the chiral system will serve as a new platform to understand and regulate the CPL activity and will be helpful to develop smart chiroptical materials.
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Affiliation(s)
- Tonghan Zhao
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No.11, ZhongGuanCun BeiYiTiao, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jianlei Han
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No.11, ZhongGuanCun BeiYiTiao, Beijing 100190, P.R. China
| | - Pengfei Duan
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No.11, ZhongGuanCun BeiYiTiao, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Minghua Liu
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No.11, ZhongGuanCun BeiYiTiao, Beijing 100190, P.R. China
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No.2, ZhongGuanCun BeiYiJie, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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20
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Wu G, Liu Y, Yang Z, Jiang T, Katakam N, Rouh H, Ma L, Tang Y, Ahmed S, Rahman AU, Huang H, Unruh D, Li G. Enantioselective assembly of multi-layer 3D chirality. Natl Sci Rev 2020; 7:588-599. [PMID: 34692078 PMCID: PMC8289020 DOI: 10.1093/nsr/nwz203] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 11/14/2019] [Accepted: 11/17/2019] [Indexed: 01/17/2023] Open
Abstract
The first enantioselective assembly of sandwich-shaped organo molecules has been achieved by conducting dual asymmetric Suzuki-Miyaura couplings and nine other reactions. This work also presents the first fully C-C anchored multi-layer 3D chirality with optically pure enantiomers. As confirmed by X-ray diffraction analysis that this chiral framework is featured by a unique C2 -symmetry in which a nearly parallel fashion consisting of three layers: top, middle and bottom aromatic rings. Unlike the documented planar or axial chirality, the present chirality shows its top and bottom layers restrict each other from free rotation, i.e., this multi-layer 3D chirality would not exist if either top or bottom layer is removed. Nearly all multi-layered compounds showed strong luminescence of different colors under UV irradiation, and several randomly selected samples displayed aggregation-induced emission (AIE) properties. This work is believed to have broad impacts on chemical, medicinal and material sciences including optoelectronic materials in future.
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Affiliation(s)
- Guanzhao Wu
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Yangxue Liu
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Zhen Yang
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Tao Jiang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Nandakumar Katakam
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Hossein Rouh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Liulei Ma
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Sultan Ahmed
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Anis U Rahman
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Hongen Huang
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Daniel Unruh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
| | - Guigen Li
- Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
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