Control synthesis of functional nanoassemblies using Langmuir-Blodgett method

H. L. Wang, Z. Tang, Y. Gao, R. J. Magyar, S. Tretiak, A. P. Shreve

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We reported here design syntheses of a series of amphiphilic molecular building blocks that can self-assembled at the air-water interface to form 2D and 3D nanostructures with tunable opto-electronic properties. Compression of these molecular building blocks with tunable π-π (hydrophobic) interactions using Langmuir-Blodgett method gives rise to monolayer thin films with different packing density and electronic coupling between chromophores. Depends on the noncovalent interaction between chromophores, we observe a transition of packing density with increasing sized of phenylene acetylene repeat unit. Furthermore, we use a series of spectroscopy tools such as neutron scattering to probe the nanoassembly structures at the molecular level. We also use simulation method to help determine the excited state electronic structure. Our results demonstrate that the interplay between dipole-dipole and π-π interactions dominate the formation of thin films with various packing density and their associated optical properties.

Original languageEnglish
Title of host publication2005 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2005 Technical Proceedings
EditorsM. Laudon, B. Romanowicz
Pages754-757
Number of pages4
Publication statusPublished - 2005
Externally publishedYes
Event2005 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2005 - Anaheim, CA, United States
Duration: 8 May 200512 May 2005

Publication series

Name2005 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2005 Technical Proceedings

Conference

Conference2005 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2005
Country/TerritoryUnited States
CityAnaheim, CA
Period8/05/0512/05/05

Keywords

  • Langmuir
  • Noncovalent interaction
  • Oligomer
  • Phenylene acetylene
  • Self-assembly

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