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Soft Lithographic Functionalization and Patterning Oxide-free Silicon and Germanium
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Unconventional layer-by-layer assembly: surface molecular imprinting and its applications.

Huaping Xu1, Monika Schönhoff, Xi Zhang

  • 1Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China. xuhuaping@mail.tsinghua.edu.cn

Small (Weinheim an Der Bergstrasse, Germany)
|January 4, 2012
PubMed
Summary

Unconventional layer-by-layer (LbL) assembly uses preassembled building blocks to create functional thin films. This method enables the use of diverse molecules for advanced applications like molecular imprinting and selective filtration.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Surface Chemistry

Background:

  • Layer-by-layer (LbL) assembly is a versatile technique for fabricating multilayer thin films.
  • Conventional LbL methods face limitations with singly charged, uncharged, or water-repellent molecules.

Purpose of the Study:

  • To summarize unconventional LbL assembly methods.
  • To highlight the potential of these methods for advanced functionalities, including surface molecular imprinting.

Main Methods:

  • Preassembly of building blocks in solution before interfacial LbL formation.
  • Utilizing various interaction types: electrostatic complexes, hydrogen-bonded complexes, block-copolymer micelles, and π-π interaction complexes.

Main Results:

  • Unconventional LbL overcomes limitations of conventional methods, enabling the use of a wider range of molecules.
  • Preassembly enhances building block capabilities for advanced functionalities.
  • Surface molecular imprinting emerges as a key application of unconventional LbL.

Conclusions:

  • Unconventional LbL assembly offers a powerful approach to fabricating functional thin films with tailored properties.
  • The described methods and applications, particularly molecular imprinting, show significant potential for selective surface patterning and filtration.