Applications of self-assembled monolayers in materials chemistry |
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Authors: | Nirmalya K Chaki M Aslam Jadab Sharma and K Vijayamohanan |
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Institution: | (1) Physical and Materials Chemistry Division, National Chemical Laboratory, 411008 Pune, India |
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Abstract: | Self-assembly provides a simple route to organise suitable organic molecules on noble metal and selected nanocluster surfaces
by using monolayers of long chain organic molecules with various functionalities like -SH,-COOH,-NH2, silanes etc. These surfaces can be effectively used to build-up interesting nano level architectures. Flexibility with respect
to the terminal functionalities of the organic molecules allows the control of the hydrophobicity or hydrophilicity of metal
surface, while the selection of length scale can be used to tune the distant-dependent electron transfer behaviour. Organo-inorganic
materials tailored in this fashion are extremely important in nanotechnology to construct nanoelctronic devices, sensor arrays,
supercapacitors, catalysts, rechargeable power sources etc. by virtue of their size and shape-dependent electrical, optical
or magnetic properties. The interesting applications of monolayers and monolayer-protected clusters in materials chemistry
are discussed using recent examples of size and shape control of the properties of several metallic and semiconducting nanoparticles.
The potential benefits of using these nanostructured systems for molecular electronic components are illustrated using Au
and Ag nanoclusters with suitable bifunctional SAMs. |
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Keywords: | Self-assembled monolayer monolayer protected clusters molecular electronics bio-mimetic synthesis superlattice |
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