|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 窄孔分布介孔分子筛MSU-1的合成(英文)显示文摘以水玻璃为硅源,在pH=3以下合成MSU X介孔材料的报道很少,本文将pH范围扩展至0 78,并从廉价的水玻璃和工业级非离子表面活性剂AEO9出发,用二步法合成出介孔分子筛MSU 1。首先将无机前驱体和非离子表面活性剂在介稳态下(pH≈2,t≈2℃)混合,然后调pH至所需值(0 78~3 94),在该pH值下进行二氧化硅缩聚。合成出的MSU 1具有孔分布窄,短程有序度提高,颗粒呈微米级等特点。其中在pH=1 98下合成的MSU 1具有最薄的孔壁、最大的比表面和孔容;在pH=0 78下合成的MSU 1具有最厚的孔壁、最大的孔径和d100值。随着pH值的增大,孔壁厚度先减小后增大。 | 李苑 YANGJun TANGYu BAILiang XIANGHong-wei LIYong-wang 杨骏 唐渝 白亮 相宏伟 李永旺 | 2003 | 燃料化学学报2003，31，2： | 2 |
| 2 | Resources and medicine value of buckwheatin China显示文摘 | ZHAOGang(赵刚) TANGYu(唐宇) WANGAnhu(王安虎) | 2010 | Chinese Wild Plant Resources2010，20，2： | 1 |
| 3 | A shape memory scaffold for body temperature self-repairing wearable perovskite solar cells with efficiency exceeding 21%显示文摘Grain boundary cracks in flexible perovskite films can be repaired by filling with self-repairing polymers during the preparation and wearable operation.However,the self-repairing polymers are commonly active through external heating or humidification treatments,which cannot match with the human body's temperature tolerance of wearable devices.Herein,a body temperature-responsive shape memory polyurethane(SMPU)is demonstrated to achieve the real-time mechanical self-repairing of grain boundary cracks(~37°C).Furthermore,the strong intermolecular interaction between SMPU and the uncoordinated Pb2+and I−,can reduce the trap density in perovskite films.The blade-coated device achieves a power conversion efficiency(PCE)of 21.33%,which is among the best reported flexible perovskite solar cells(PSCs;0.10 cm2).Importantly,the device with SMPU can recover more than 80%of the PCE after 6000 cycles(bending radius:8 mm).Finally,the flexible PSCs are used for wearable solar power supply of a smartphone,which show great potential for self-repairing wearable electronics. | Tangyue Xue Zengqi Huang Pei Zhang Meng Su Xiaotian Hu Tingqing Wu Baojin Fan Gangshu Chen Guanghui Yu Wentao Liu Xuying Liu Yiqiang Zhang Yanlin Song | 2022 | InfoMat2022，4，12： | 1 |
| 4 | Chiral Lewis Acid-Catalyzed Norrish Type II Cyclization to Synthesizeα-Oxazolidinones via Enantioselective Protonation显示文摘The Norrish type II reaction is an interesting photochemical process through Csp3-H functionalization of N,N-disubstituted oxo-amine or oxo-amide provides access to diverse synthetic building blocks by different pathways.Due to the finite lifetime of the excited state and rapid changes in the intermediates,there are significant challenges in controlling the stereochemical outcomes of this reaction over the strong racemic background reaction.The oxazolidin-4-one skeleton is a useful structural motif found in bioactive molecules,and it is the one that is produced by a not well-studied route among the three routes in Norrish type II cyclization.Herein we report the asymmetric version of this process,and a variety of oxazolidin-4-ones is achieved from arylα-oxoamides via triplet excimers with three H-transfer steps interspersed by a cyclization step under mild,visible light.In the presence of chiral N,N-dioxide/metal complex catalysts,diastereo-and enantiocontrol in this photochemical reaction happens with enantioselective protonation of enol intermediates as the crucial stereo-determining step,getting the better of the thermodynamical control pathway.Trans-oxazolidine-4-ones can be obtained in high enantioselectivity,which can be transferred into optically active cis-oxazolidine-4-ones after the treatment with a base. | Tangyu Zhan Liangkun Yang Qiyou Chen Rui Weng Xiaohua Liu Xiaoming Feng | 2023 | CCS Chemistry2023，5，9： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员