- Selective Synthesis of Diverse Heterocycles via Metal-Free Oxidative Coupling of beta-Tetralone and Nitrogen Nucleophiles
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A mild procedure for the selective preparation of diverse heterocycles (such as quinoxaline, phenazine, phenothiazine, etc.) from beta-tetralones and nitrogen nucleophiles under metal-free conditions has been developed. The iodine reagents played an important role in the selectivity control of condensation and dehydrogenative aromatization cascade processes. These reaction conditions tolerate a wide range of functional groups and apply to oxidation-sensitive nitrogen nucleophiles. (Figure presented.).
- Deng, Guo-Jun,Huang, Huawen,Jiang, Shuxin,Li, Rong,Shao, Wen,Wang, Shuowen
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supporting information
(2022/03/15)
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- Multistage Stimulus-Responsive Room Temperature Phosphorescence Based on Host–Guest Doping Systems
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Compared with inorganic long-lasting luminescent materials, organic room temperature phosphorescent (RTP) ones show several advantages, such as flexibility, transparency, solubility and color adjustability. However, organic RTP materials close to commerci
- Che, Weilong,Fang, Manman,Gao, Mingxue,Li, Xiaoning,Li, Zhen,Liu, Zhenjiang,Tian, Yu,Yang, Jie
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supporting information
p. 20259 - 20263
(2021/08/09)
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- Organic room temperature phosphorescent material with multiple stimulus response and preparation method and application thereof
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The invention discloses an organic room temperature phosphorescent material with multiple stimulus responses and a preparation method and application thereof. The room-temperature phosphorescent material mainly comprises triphenylphosphonium oxygen and a
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Paragraph 0073-0075
(2021/12/07)
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- Phenothiazine Scope: Steric Strain Induced Planarization and Excimer Formation
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Phenothiazine derivatives based on the 10-phenyl-10H-phenothiazine (NAS) chromophore, namely 7-phenyl-7H-benzo[c]phenothiazine (NAS-1) and 12-phenyl-12H-benzo[a]phenothiazine (NAS-2), were designed and synthesized. NAS-1 and NAS-2 are constitutional isomers with different steric strains imposed on the phenothiazine core moiety. In solution, the more-strained NAS-2 possesses a bent structure and undergoes photoinduced structural planarization (PISP). In the crystal, despite the absence of PISP, bent NAS-2 exhibits prominent excimer emission as well as emission mechanochromism, which is not observed in the planar-like NAS and NAS-1. This unconventional observation results from the bent core structure facilitating π–π stacking of the peripheral naphthalene moieties. Two-photon-coupled depth-dependent emission shows spectral differences between the surface and kernel of the NAS-2 crystal, and is believed to be a general phenomenon, at least in part, for materials exhibiting emission mechanochromism.
- Chen, Deng-Gao,Chen, Yi,Wu, Cheng-Ham,Chen, Yi-An,Chen, Meng-Chi,Lin, Jia-An,Huang, Chun-Ying,Su, Jianhua,Tian, He,Chou, Pi-Tai
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supporting information
p. 13297 - 13301
(2019/08/20)
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