Molecular plug/socket

Keywords Molecular Devices a Molecular Machines a Molecular Wires a Antenna Systems a Molecular Switches a Plug/socket Systems a Pseudorotaxanes a Rotaxanes a Catenanes a Supramolecuiar Chemistry a Photochemistry a Electrochemistry a Luminescence... 

E. Ishow, A. Credi, V. Balzani, F. Spadola, L. Mandolini, A Molecular-level Plug/socket System. Electronic Energy Transfer from a Binaphthyl Unit Incorporated into a Crown Ether to an Anthracenyl Unit Linked to an Ammonium Ion , Chem. Eur. ]. 1999, 5, 984-989. 

Ishow, E., Credi, A., Balzani, V., Spadola, F., Mandolini, L., A molecular-level plug/socket system Electronic energy transfer from a binaphthyl unit incorporated into a crown ether to an anthracenyl unit linked to an ammonium ion. Chem. Eur. J. 1999, 5, 984-989. 

Fig. 7 Molecular-level plug/socket system for energy transfer based on the reversible acid-base driven threading-dethreading motions in the hydrogen bonded pseudorotaxane 4d5H+ (CH2C12 room temperature). The acid-driven threading of compound 6, incorporating a bulky benzyl group, through the macrocyclic cavity of 4 does not occur [57]...

The plug-socket concept described above can be used to design molecular systems that mimic the function played by a macroscopic electrical extension cable. The operation of an extension cable is more complex than that of a plug/socket system, since it involves three components that must be hold together by two connections that have to be controllable reversibly and independently in the fully connected system, an electron (or electronic energy) flow must take place between the remote donor and acceptor units (Fig. 8). 

The plug/socket concept has recently been used to design and construct a self-assembling [3]pseudorotaxane that mimics at the molecular level the function played by a macroscopic extension. The system is made (Fig. 33) [140] of three components, 35 +, 36H +, and 2. Component 35 + consists of two moieties—a [Ru(bpy)3]2+ unit, which plays the role of electron donor under light excitation, and a... 

The plug-socket concept described above can be used to design molecular systems which mimic the function played by a macroscopic electrical extension cable. The operation of an extension cable is more complex than that of a... 

The above results are interesting since the plug/socket molecular-level concept can be straightforwardly extended to suitably selected systems where (a) light excitation induces an electron flow, and (b) the "plug in/plug off function is stereoselective since... 

Most polymers are electrical insulators, which makes them very useful for making plugs, sockets and light switches. However, a group of polymers have been developed that can conduct electricity. One of the first was the polymer formed from the hydrocarbon called ethyne (also still know by its old name, acetylene). Its molecular formula is C2H2 and its displayed formula is ... 

Fig. 1. Various schematics of bead display for molecular assemblies on beads. The Py subunits of the G protein (circles labeled with [i and y) are fused with either FLAG or hexahistidine tag, which recognizes the biotinylated M2 anti-FLAG antibodies on streptavidin-coated beads or chelated nickel on the dextran-treated beads. A socket and plug connecter is utilized to depict the very high-affinity interaction of the epitope tag. This modular setup allows for either a subunit (for capturing FPR-GFP) or as subunit (for capturing / 2AR-GFP) to be coupled with the fly subunit to form the complete G protein coating the bead. Fluorescent components such as GFP or ligand are indicated in green. See text for details.

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