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Inherently Chiral and Symmetrical Heteroatom-Doped Zigzag-Type Hydrocarbon Belts

CCS Chemistry 2024年第5期6卷 1198-1210页

作者： Xue-Yuan Wang Xin-Yu Zhang Shuo Tong Qing-Hui Guo Mei-Ling Tan Cheng-Jun Li Mei-Xiang Wang Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084

hydrocarbon belts due to their potential applications in carbon *** contrast,heteroatomembedded zigzag hydrocarbon belts as advanced design strategies with fascinating structures and desirable,unique properties have remained largely unexplored,and inherently chiral ones are ***,we report the synthesis of a diversity of symmetric and highly enantiopure inherently chiral O-and N-doped zigzag-type hydrocarbon belts starting from strainless macrocycles based on fjord-stitching *** readily available pertriflated resorcin[6]arene underwent partial hydrolyses and intramolecular S_(N)Ar reactions to form a calix[3](9H-xanthene)derivative and a prochiral half-belt *** transformations of calix[3](9H-xanthene)into C_(3v)-symmetric molecular belts were achieved by closing the rest of the fjords with triple intramolecular S_(N)Ar reactions and Yamamoto homo coupling reactions,as well as palladiumcatalyzed intermolecular acridination reactions with primary *** prochiral half-belt underwent enantioselective desymmetrizative mono-acridination to afford an inherently chiral N,O_(4)-bridged pseudo-belt with an enantiomeric excess(ee)value of>99%under the catalysis of Pd(OAc)_(2)and(R)-*** closure reactions of the pseudo-belt produced diverse heteroatom-inlayed zigzag-type hydrocarbon belts of inherent ***,we showed the unique cavity structures of the belts and demonstrated interesting chiroptic properties of the inherently enantiopure chiral *** research opens the door for the exploration of novel and sophisticated symmetric and inherently chiral molecular nanobelt structures with outstanding physical and chemical properties,as well as potential applications.

关键词： zigzag-type molecular belt heterocycle chiroptical property fjord-stitching strategy resorcinarene

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Circularly polarized luminescence of lanthanide complexes:From isolated individuals,discrete oligomers,to hierarchical assemblies

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InfoMat 2023年第3期5卷 58-101页

作者： Yuan Zhong Zhennan Wu Yu Zhang Bin Dong Xue Bai State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchunthe People's Republic of China Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission Key Laboratory of Photosensitive Materials&Devices of Liaoning ProvinceSchool of Physics and Materials EngineeringDalian Nationalities UniversityDalianthe People's Republic of China

Circularly polarized luminescence(CPL)is the emission featured spatial orientation equivalent to circular *** to the unique magnetic dipole-allowed but electric-dipole-forbidden 4f→4f transitions,chiral lanthanide complexes have been recognized as ideal candidates to achieve unprecedented luminescence dissymmetry factor(glum).Their inherent electric-dipole-forbidden transition can be partly allowed,through the rational design of coordination ligands to lower the surrounding symmetry,further endowing them with relatively high quantum yields(QYs).Moreover,the blossom of supramolecular chemistry in lanthanide complexes allows for the construction of discrete oligomers and hierarchical assemblies,rendering them with enhanced chiroptical ***,we deploy this review by summarizing recent advances in the chiroptical properties of lanthanide complexes,spanning multiple scales from isolated mononuclear individuals,discrete polynuclear oligomers,to infinite hierarchical *** first introduce the basic concept and several important parameters for the assessment of CPL ***,isolated mononuclear lanthanide complexes coordinated with different types of antennas,along with the unique chirality transfer and induction in achiral lanthanide complexes were ***,the systematical discussion on chiroptical properties in discrete polynuclear lanthanide oligomers and infinite hierarchical lanthanide assemblies was ***,the state-of-the-art applications of CPL-active lanthanide complexes were *** end up this review with the conclusion and prospects,involving the rational design of ligands,directed and hierarchically precise self-assembly,and extending applications of chiral lanthanide complexes.

关键词： circularly polarized luminescence chiroptical property lanthanide complexes self-assembly

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chiroptical coassemblies between organic carboxylic acids and amino acid derivatives with C_(3)-symmetry

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Chinese Chemical Letters 2023年第6期34卷 319-322页

作者： Yiran Xia Aiyou Hao Pengyao Xing School of Chemistry and Chemical Engineering Shandong UniversityJi’nan 250100China

Benzimidazole amino acid derivatives behave as supramolecular hosts to include organic acids via complementary hydrogen bonding whereby supramolecular chirality and chiroptical properties could be *** acids enhanced the chiral assembly that showed tunable circularly polarized luminescence with high dissymmetry g-factors at 10^(-2)grade.

关键词： Supramolecular chirality Organic carboxylic acid Amino acid Coassembly chiroptical property

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