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101.
Dr. Xin Wang Dr. Junjie He Dr. Benqing Zhou Dr. Youming Zhang Dr. Jiatao Wu Dr. Rui Hu Prof. Liwei Liu Prof. Jun Song Prof. Junle Qu 《Angewandte Chemie (International ed. in English)》2018,57(28):8668-8673
As a highly stable band gap semiconductor, antimonene is an intriguing two‐dimensional (2D) material in optoelectronics. However, its short layer distance and strong binding energy make it challenging to prepare high‐quality large 2D antimonene; therefore, its predicted tunable band gap has not been experimentally confirmed. Now, an approach to prepare smooth and large 2D antimonene with uniform layers that uses a pregrinding and subsequent sonication‐assisted liquid‐phase exfoliation process has been established. Mortar pregrinding provides a shear force along the layer surfaces, forming large, thin antimony plates, which can then easily be exfoliated into smooth, large antimonene, avoiding long sonication times and antimonene destruction. The resulting antimonene also enabled verification of the tunable band gap from 0.8 eV to 1.44 eV. Hole extraction and current enhancement by about 30 % occurred when the antimonene was used as a hole transport layer in perovskite solar cells. 相似文献
102.
Jing Wu Ying Qu Kun Shi Bingyang Chu Yanpeng Jia Xue Xiao Qianjun He Zhiyong Qian 《中国化学快报》2018,29(12):1819-1823
The CPT was loaded into the HMSNs with the high loading capacity. Then the CPT@HMSNs were loaded into the PLEL thermosensitive hydrogels for local therapy to prevent the recurrence of breast cancer after the tumor was resected. 相似文献
103.
Linaclotide and its D-enantiomer were obtained through Fmoc solid phase peptide synthesis method and co-crystalized through racemic crystallization. The crystal structure showed that linaclotide has a tight, three-beta turns structure immobilized by three pairs of disulfide bonds. 相似文献
104.
A method for the synthesis of allylboronates by iron-catalyzed boration of allylic alcohols with H3BO3 as an additive is developed. The introduction of H3BO3 promotes the cleavage of C?O bond in allylic alcohols obviously. Functional groups, such as fluoro, chloro, bromo, alkyl, and alkoxy, are tolerated well. Thus, various allylboronates are obtained in acceptable yield. 相似文献
105.
Qian Zhang Ke-Qing Li Jun-Hui Yang Gui-Rong Qu Na-Na Ma Hai-Ming Guo 《Supramolecular chemistry》2018,30(12):977-981
The binding selectivity of an adenine-monofunctionalized pillar[5]arene (H) with a series of pyrimidine derivatives were investigated through 1H NMR experiments and density functional theory (DFT) study. High binding-selectivity was demonstrated. Typically, H displayed very strong binding strength with 6-(2,4-dioxo-3, 4-dihydropyrimidin-1 (2H)-yl)hexanenitrile (G1) [Ka >105 M?1], up to about 3000-fold as compared with 1-hexylpyrimidine-2,4(1H, 3H)-dione (G5) [Ka = 31 M?1]. The strong binding ability of H with G1 was due to the cooperative multiple hydrogen bond, dipole-dipole, C-H···π and π···π interactions. The high binding-selectivity was also verified by calculation results. The calculated interaction energy (ΔEi) of G1?H was ?12.92 Kcal·mol?1 while that of G5?H was ?2.85 Kcal·mol?1. 相似文献
106.
双钼配合物〔Mo(DTC)4〕〔MoCl6〕(其中DTC=S2CN(C2H5)2)由于它在一个分子中同时包含两个处于不同配位环境中的、表观氧化态都是正五价的钼,即:一个Mo5+与四个DTC配体构成配位阳离子〔Mo(DTC)4〕+;另一个Mo5+与氯离子配体构成配位阴离子〔MoCl6〕-而独具特色。本文首次发表了它的红外和紫外-可见吸收光谱数据,并通过初步的光谱分析,确定了上述配合物的结构特征。 相似文献
107.
近年来,毛细管电泳(CE) 手性分离方法的研究主要集中在各种手性添加剂与对映体药物的匹配及实验条件的最优化选择上.目前,较为成熟的CE分离模式有:区带电泳(CZE)、凝胶电泳(CGE)、等速电泳(CITP)、胶束电动色谱(MEKC)和非水电泳(NACE)等,并已成功地用于手性化合物对映体的分离.CE手性分离研究正朝着新型手性选择剂的研制和实现与其他各种定性分析仪器及其他色谱分离模式的联用方向发展. 相似文献
108.
Huang H Qu C Liu X Huang S Xu Z Zhu Y Chu PK 《Chemical communications (Cambridge, England)》2011,47(24):6897-6899
Controlled assembly of gold nanorods induced by Na(3)PO(4) leads to a significant amplification of localized surface plasmon resonance (LSPR) signals. The strong affinity between Au and Hg alters the coupled LSPR signals due to the amalgamation of Hg and Au. This allows detection of Hg in aqueous solutions with ultra-high sensitivity and excellent selectivity, without sample pretreatment. 相似文献
109.
Li B Cao H Shao J Zheng H Lu Y Yin J Qu M 《Chemical communications (Cambridge, England)》2011,47(11):3159-3161
Incorporation of reduced graphene oxide into β-Ni(OH)(2) presents high performances with specific discharge capacity of 283 mA hg(-1) after 50 cycles in Ni-MH batteries, and 507 mA hg(-1) after 30 cycles in Li ion batteries. 相似文献
110.
Anilinemethyltriethoxysilane (AMTEOS) was first used as precursor as well as selective stationary phase to prepare the sol-gel derived anilinemethyltriethoxysilane/polydimethylsiloxane (AMTEOS/PDMS) solid-phase microextraction (SPME) fibers. The novel SPME fiber exhibits high extraction efficiency, good thermal stability and long lifetime compared with commercial SPME coatings. In addition, the phenyl groups in the porous layer can exhibit π-π interactions with aromatic compounds, such as monocyclic aromatic hydrocarbons (MAHs) and polycyclic aromatic hydrocarbons (PAHs). Therefore, SPME using the AMTEOS/PDMS sol-gel fiber coupled with GC-FID was recommended as a sensitive and selective method towards the analysis of these compounds in environmental water samples. The optimal extraction conditions were investigated by adjusting extraction time, salt addition, extraction temperature, and desorption time. The method showed linearity between 2 and 4000 μg l−1 for MAHs and 1 and 1000 μg l−1 for PAHs. The limit of detection (LOD) was 0.6-3.8 μg l−1for MAHs and 0.2-1.5 μg l−1 for PAHs. The novel AMTEOS/PDMS fiber was applied to extract small amount of aromatic compounds in wastewater and river water respectively. The recovery of the method was acceptable for quantitative analysis. 相似文献