Ferrocene-terminated trans-Ru(dppm)2 (dppm=Ph2PCH2PPh2)-containing molecular wires with alligator clips were prepared. They are suitable for self-assembly on gold electrode to investigate the influence of metal incor...Ferrocene-terminated trans-Ru(dppm)2 (dppm=Ph2PCH2PPh2)-containing molecular wires with alligator clips were prepared. They are suitable for self-assembly on gold electrode to investigate the influence of metal incorporation on the electron transportation property of the molecular wires.展开更多
Interfacial charge transfer is the key kinetic process dictating the operation of lithium-ion battery. Redox-mediated charge propagations of the electronic (e- and h+ ) and ionic species (Li+) at the electrode-e...Interfacial charge transfer is the key kinetic process dictating the operation of lithium-ion battery. Redox-mediated charge propagations of the electronic (e- and h+ ) and ionic species (Li+) at the electrode-electrolyte interface have recently gained increasing attention for better exploitation of battery materials. This article briefly summarises the energetic and kinetic aspects of lithium-ion batteries, and reviews the recent progress on various redox-assisted Li+ storage approaches. From molecular wiring to polymer wiring and from redox targeting to redox flow lithium battery, the role of redox mediators and the way of the redox species functioning in lithium-ion batteries are discussed.展开更多
A series of dendrimer-encapsulated poly(phenyleneethynylene)s 4~6 were Synthesize d. The light-harvesting antenna functions of dendrimer frameworks together with the blue-light emitting activities of 4~6 were highli...A series of dendrimer-encapsulated poly(phenyleneethynylene)s 4~6 were Synthesize d. The light-harvesting antenna functions of dendrimer frameworks together with the blue-light emitting activities of 4~6 were highlighted.展开更多
We describe in this paper the fabrication of two- and one-dimensional nanostructures with organic molecular beam epitaxy (OMBE) principle based on controlled selfassembly by using adsorbate-substrate and intennolecu...We describe in this paper the fabrication of two- and one-dimensional nanostructures with organic molecular beam epitaxy (OMBE) principle based on controlled selfassembly by using adsorbate-substrate and intennolecular interactions that are important in molecular fabrication. Cu(100) single crystal was used as substrate in fabricating molecular nanostructures. Scanning tunneling microscopy (STM) experiments confirmed that Zn-tetra- [3,5-di-t-butylphenyl]porphyrin-molecules can be used to fabricate both monolayer and molecular wire on Cu(100) surface simultaneously, and the latter is arranged on the terrace edges. We herein briefly discuss the selectivity in terms of a mechanism in which the highest occupied and lowest unoccupied molecular orbitals (HOMO and LUMO) of the molecules interact with the surface.展开更多
Exploring the charge transport properties and electronic functions of molecules is of primary interest in the area of molecular electronics.Conjugated polymers(CPs) represent an attractive class of molecular candida...Exploring the charge transport properties and electronic functions of molecules is of primary interest in the area of molecular electronics.Conjugated polymers(CPs) represent an attractive class of molecular candidates,benefiting from their outstanding optoelectronic properties.However,they have been less studied compared with the small-molecule family,mainly due to the difficulties in incorporating CPs into molecular junctions.In this review,we present a summary on how to fabricate CP-based singlechain and monolayered junctions,then discuss the transport behaviors of CPs in different junction architectures and finally introduce the potential applications of CPs in molecular-scale electronic devices.Although the research on CP-based molecular electronics is still at the initial stage,it is widely accepted that(1) CP chains are able to mediate long-range charge transport if their molecular electronic structures are properly designed,which makes them potential molecular wires,and(2) the intrinsic optoelectronic properties of CPs and the possibility of incorporating desirable functionalities by synthetic strategies imply the potential of employing tailor-made polymeric components as alternatives to small molecules for future molecular-scale electronics.展开更多
In this article, we report on the characterization of various molecular junctions' current-voltage characteristics (Ⅰ-Ⅴ curves) evolution under mechanical modulations, by employing a novel electrochemically assis...In this article, we report on the characterization of various molecular junctions' current-voltage characteristics (Ⅰ-Ⅴ curves) evolution under mechanical modulations, by employing a novel electrochemically assisted-mechanically controllable break junction (EC-MCBJ) method. For 1,4-benzenedithiol, the Ⅰ-Ⅴ curves measured at constant electrode pair separation show excellent reproducibility, indicating the feasibility of our EC-MCBJ method for fabricating molecular junctions. For ferrocene-bisvinylphenylmethyl dithiol (Fc-VPM), an anomalous type of Ⅰ-Ⅴ curve was observed by the particular control over the stepping motor. This phenomenon is rationalized assuming a model of atomic contact evolution with the presence of molecular junctions. To test this hypothesized model, a molecule with a longer length, 1,3-butadiyne-linked dinuclear ruthenium(H) complex (Ru-1), was implemented, and the Ⅰ-Ⅴ curve evolution was investigated under similar circumstances. Compared with Fc-VPM, the observed Ⅰ-Ⅴ curves show close analogy and minor differences, and both of them fit the hypothesized model well.展开更多
基金This work was supported by the National Natural Science Foundation of China No. 20074036.
文摘Ferrocene-terminated trans-Ru(dppm)2 (dppm=Ph2PCH2PPh2)-containing molecular wires with alligator clips were prepared. They are suitable for self-assembly on gold electrode to investigate the influence of metal incorporation on the electron transportation property of the molecular wires.
基金supported by the National Research Foundation,Prime Minister’s Office,Singapore under its Competitive Research Program(CRP Award No.NRFCRP8-2011-04)
文摘Interfacial charge transfer is the key kinetic process dictating the operation of lithium-ion battery. Redox-mediated charge propagations of the electronic (e- and h+ ) and ionic species (Li+) at the electrode-electrolyte interface have recently gained increasing attention for better exploitation of battery materials. This article briefly summarises the energetic and kinetic aspects of lithium-ion batteries, and reviews the recent progress on various redox-assisted Li+ storage approaches. From molecular wiring to polymer wiring and from redox targeting to redox flow lithium battery, the role of redox mediators and the way of the redox species functioning in lithium-ion batteries are discussed.
文摘A series of dendrimer-encapsulated poly(phenyleneethynylene)s 4~6 were Synthesize d. The light-harvesting antenna functions of dendrimer frameworks together with the blue-light emitting activities of 4~6 were highlighted.
基金This work was supported by the Excellent Scientist Program of South China University of Technology (324-D60090), the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (B09-B7060040) and the National Natural Science Foundation of China (20643001)
文摘We describe in this paper the fabrication of two- and one-dimensional nanostructures with organic molecular beam epitaxy (OMBE) principle based on controlled selfassembly by using adsorbate-substrate and intennolecular interactions that are important in molecular fabrication. Cu(100) single crystal was used as substrate in fabricating molecular nanostructures. Scanning tunneling microscopy (STM) experiments confirmed that Zn-tetra- [3,5-di-t-butylphenyl]porphyrin-molecules can be used to fabricate both monolayer and molecular wire on Cu(100) surface simultaneously, and the latter is arranged on the terrace edges. We herein briefly discuss the selectivity in terms of a mechanism in which the highest occupied and lowest unoccupied molecular orbitals (HOMO and LUMO) of the molecules interact with the surface.
基金the financial support from 985/211 Project(No.WF220411002)Shanghai Jiao Tong University and the national "1000-talent Plan(Youth)"
文摘Exploring the charge transport properties and electronic functions of molecules is of primary interest in the area of molecular electronics.Conjugated polymers(CPs) represent an attractive class of molecular candidates,benefiting from their outstanding optoelectronic properties.However,they have been less studied compared with the small-molecule family,mainly due to the difficulties in incorporating CPs into molecular junctions.In this review,we present a summary on how to fabricate CP-based singlechain and monolayered junctions,then discuss the transport behaviors of CPs in different junction architectures and finally introduce the potential applications of CPs in molecular-scale electronic devices.Although the research on CP-based molecular electronics is still at the initial stage,it is widely accepted that(1) CP chains are able to mediate long-range charge transport if their molecular electronic structures are properly designed,which makes them potential molecular wires,and(2) the intrinsic optoelectronic properties of CPs and the possibility of incorporating desirable functionalities by synthetic strategies imply the potential of employing tailor-made polymeric components as alternatives to small molecules for future molecular-scale electronics.
基金This work was supported by the National Basic Research Program of China (Nos. 2011YQ030124, 2014CB845603, and 2015CB932301), National Natural Science Foundation of China (Nos. 91427304, 21321062, 21303114, 21403181, and 21503179), Natural Science Foundation of Fujian Province (No. 2012J05034), and by CNRS UMR 8640 PASTEUR and LIA CNRS NanoBioCatEchem.
文摘In this article, we report on the characterization of various molecular junctions' current-voltage characteristics (Ⅰ-Ⅴ curves) evolution under mechanical modulations, by employing a novel electrochemically assisted-mechanically controllable break junction (EC-MCBJ) method. For 1,4-benzenedithiol, the Ⅰ-Ⅴ curves measured at constant electrode pair separation show excellent reproducibility, indicating the feasibility of our EC-MCBJ method for fabricating molecular junctions. For ferrocene-bisvinylphenylmethyl dithiol (Fc-VPM), an anomalous type of Ⅰ-Ⅴ curve was observed by the particular control over the stepping motor. This phenomenon is rationalized assuming a model of atomic contact evolution with the presence of molecular junctions. To test this hypothesized model, a molecule with a longer length, 1,3-butadiyne-linked dinuclear ruthenium(H) complex (Ru-1), was implemented, and the Ⅰ-Ⅴ curve evolution was investigated under similar circumstances. Compared with Fc-VPM, the observed Ⅰ-Ⅴ curves show close analogy and minor differences, and both of them fit the hypothesized model well.