Ability to tune the size, shape, and composition at the nano-particles has led to the growth of extensive research in the area of novel multifunctional materials. The ability to engineer the interparticle properties for fabricating nanoparticle assemblies in macroscopic scales is also very important from the perspective of exploiting the collective properties of the nanopoarticle assemblies as multifunctional materials for practical applications that involve surface or interfacial processes.
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The exploration of nanoparticle-structured molecular recognition is an important front in many emerging chemical and biological sensor technologies. The viability of introducing noncovalent character (e.g., hydrogen bonding) through shell molecules provides tunable molecular interactions for enhancing selectivity, which parallels synthetic or biological receptors.Through investigation of these nano-particle assemblies implies that both non-covalent and covalent interactions are important for manipulating the interparticle properties in the multifunctional nanostructures. The noncovalent interparticle interactions are useful for regulating molecular recognition and sensing properties, whereas the covalent interactions facilitate the assembly of stable interfacial nanostructures.
The viability of the one-step molecularly mediated assemblies also open technological prospects to combine the nanostructure-tuning capabilities with the electrical, optical, magnetic, and spectroscopic properties for designing chemical sensors, biosensors, and medical probes. Implications of insights to expanding the exploration of nanoparticle thin film assemblies for a wide range of technological applications has been discussed in details in a recent article in Langmuir.
Ref: Langmuir, 2010, 26 (2), pp 618–632
Authors: Lingyan Wang, Jin Luo, Mark J. Schadt and Chuan-Jian Zhong
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