排序方式: 共有8条查询结果,搜索用时 31 毫秒
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Ye Jingyao Al-Jobory Alaa Zhang Qian-Chong Cao Wenqiang Alshehab Abdullah Qu Kai Alotaibi Turki Chen Hang Liu Junyang Ismael Ali K. Chen Zhong-Ning Lambert Colin J. Hong Wenjing 《中国科学:化学(英文版)》2022,65(9):1822-1828
Science China Chemistry - Destructive quantum interference (DQI) provides a unique approach to controlling the leakage current in the OFF state of molecular devices. However, the DQI in... 相似文献
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Crystalline polyoxo-titanium clusters (PTCs),as a molecular model of TiO2 nanomaterials,have attracted unprecedented attention due to their designable structure,tunable band gap,catalysis,and photochromic properties.A new trinuclear Ti3-oxo cluster,[Ti3(μ2-O)(μ3-O)(abz)6(OiPr)2]·CH3CN·H2O (Ti3),was synthesized by solvothermal method with a yield of 60%by using 4-aminobenzoic acid as liga... 相似文献
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QU Kai PAN Zi-You WANG Jin-Yun ZHANG Bochao ZENG Hao SANG Yu-Feng ZHANG Qian-Chong CHEN Zhong-Ning 《高等学校化学研究》2023,39(2):224-227
Understanding the quantum effect in the cross-conjugated system is of fundamental significance in molecular electronics. In this study, four molecules Xa-O, Xa, BP and BP-O were synthesized to investigate the destructive quantum interference(DQI) of a carbonyl bridge. The single-molecule conductance measured by the scanning tunneling microscope break junction(STM-BJ) technique demonstrates an increase in the conductance from molecule BP-O to molecule Xa-O as the cross-conjugated system is extended. Theoretical calculations show that the explicit DQI feature is presented in BP-O but absent in Xa-O, which indicates the removal of DQI in the restrained structures and results in the conductance enhancement in Xa-O. 相似文献
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Duan Ping Liu Junyang Wang Jin-Yun Qu Kai Cai Shuning Wang Fei Chen Lichuan Huang Xiaoyan Li Ruihao Shi Jia Zhang Qian-Chong Hong Wenjing Chen Zhong-Ning 《中国科学:化学(英文版)》2020,63(4):467-474
Seeking the strategies of designing highly conductive molecular structures is one of the core researches in molecular electronics.As asymmetric structure has manifested feasible properties in comprehensive fields, we introduce the structures of asymmetric platinum(Ⅱ) complexes into the charge transport study at single-molecule scale for the first time. The single-molecule conductance measurement results reveal that, in platinum(Ⅱ)-aryloligoynyl structures, the conductance of asymmetrically coordinated complexes is obviously higher than that of the symmetric isomers with the same molecular length, while the conductance is almost identical in symmetric and asymmetric platinum(Ⅱ)-oligoynyl complexes. Theoretical study uncovers that, upon connecting to the oligoynyl structure, the aromatic group effectively extends the π-system of the whole conductive backbone and gathers the HOMO population mainly on the longer oligoynyl ligand, which reduces the energy barrier in electron transport and enhances the conductance through HOMO energy lifting. This result provides feasible strategy for achieving high conductive molecular devices. 相似文献
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Peng JB Zhang QC Kong XJ Zheng YZ Ren YP Long LS Huang RB Zheng LS Zheng Z 《Journal of the American Chemical Society》2012,134(7):3314-3317
Four 52-metal-ion 3d-4f cluster complexes featuring a common core of Ln(42)M(10) (Ln = Gd(3+), Dy(3+); M = Co(2+/3+), Ni(2+)) were obtained through self-assembly of the metal ions templated by mixed anions (ClO(4)(-) and CO(3)(2-)). Magnetic studies revealed that the Gd(42)Co(10) and Gd(42)Ni(10) clusters exhibit the largest magnetocaloric effect (MCE) among any known 3d-4f complexes. Replacement of Gd(3+) ions with anisotropic Dy(3+) ions caused significant changes in the magnetic behavior of the clusters; both Dy(42)Co(10) and Dy(42)Ni(10) displayed slow relaxation of the magnetization. 相似文献
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Xu HR Zhang QC Zhao HX Long LS Huang RB Zheng LS 《Chemical communications (Cambridge, England)》2012,48(40):4875-4877
Proton transport along different axes in an organic-inorganic compound [(C(6)H(10)N(2))(2)(SO(4))(2)·3H(2)O](n) (1) was investigated, revealing that proton transport is not only influenced by the structure of the proton transport pathway, but also by the order-disorder extent of proton carriers. 相似文献
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