다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

J. Appl. Cryst.の発刊に際して

Ju Mei,†,‡,∥ Nelson L. C. Leung,†,‡,∥ Ryan T. K. Kwok,†,‡ Jacky W. Y. Lam,†,‡ and Ben Zhong Tang*,†,‡,§ †HKUST-Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China ‡Department of Chemistry, HKUST Jockey Club Institute for Advanced Study, Institute of Molecular Functional Materials, Division of Biomedical Engineering, State Key Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China Guangdong Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China

Aggregation-Induced Emission: Together We Shine, United We Soar!

Advances in copper complexes as anticancer agents.

Recent advancements in supercapacitor technology

A high-performance rechargeable Mg2+/Li+ hybrid battery using CNT@TiO2 nanocables as the cathode

Cu-anchored CNTs for effectively catalytic reduction of 4-nitrophenol

Well-dispersed Li2CoTi3O8 nanoparticles as a multifunctional material for lithium-ion batteries and lithium-sulfur batteries

A novel photochromic compound, 1,3-diphenyl-4-(3-chloro-4-fluorobenzal)-5-hydoxypyrazole 4-phenylsemicarbazide (1a), has been synthesized by introducing a phenylsemicarbazide unit. The material exhibits good fatigue resistance and reversible fluorescent switching properties with distinct fluorescence on/off ratio under alternating UV irradiation and heating at 120 °C. For the fabrication of actual application materials, 1a/hydroxypropylmethylcellulose (HPMC) composite film has been successfully fabricated using hydrogel casting method. The 1a/HPMC composite film obtained can also show reversible photochromic reaction under UV irradiation and rapid thermal bleaching properties by heating. The HPMC composite film shows similar good photochromic properties as those of 1 in the crystalline state.

Photochromism of a pyrazolone derivative in crystalline state and in HPMC composite film

A new compound containing double heterocycles of pyrazole and thiophene, i.e. 1,3-diphenyl-4-(2-thienylmethylene)-5-hydroxypyrazole 4-phenylsemicarbazone (I), was synthesized and characterized by elemental analysis, MS, IR, 1HNMR, 13CNMR and X-ray single crystal diffraction. In solid state, it exhibits good photochromic properties under the UV and visible light irradiation. Upon the irradiation of UV light, the keto isomer (II) shows three IR absorption bands at 1697, 3302, 3404 cm−1, which are not observed for the enol isomer. To understand the IR spectral changes, theoretical calculations were carried out using Gaussian 03 program. Based on analysis of the single crystal structure and the results of theoretical calculation, the photochromic mechanism is due to the double-proton transfer by intramolecular and intermolecular hydrogen bonds, leading to the isomerization between the enol and the keto form.

Lang Liu

Papers

A high-performance rechargeable Mg2+/Li+ hybrid battery using CNT@TiO2 nanocables as the cathode

Cu-anchored CNTs for effectively catalytic reduction of 4-nitrophenol

Well-dispersed Li2CoTi3O8 nanoparticles as a multifunctional material for lithium-ion batteries and lithium-sulfur batteries

Photochromism of a pyrazolone derivative in crystalline state and in HPMC composite film

A novel solid-state photochromic compound containing double heterocycles