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Tang Z, Hicks RK, Magyar RJ, et al. Synthesis and characterization of amphiphilic phenylene ethynylene oligomers and their Langmuir-Blodgett films. Langmuir. 2006;22(21):8813-20doi: 10.1021/la060914k.
Tang, Z., Hicks, R. K., Magyar, R. J., Tretiak, S., Gao, Y., & Wang, H. L. (2006). Synthesis and characterization of amphiphilic phenylene ethynylene oligomers and their Langmuir-Blodgett films. Langmuir : the ACS journal of surfaces and colloids, 22(21), 8813-20. https://doi.org/10.1021/la060914k
Tang, Zhexiong, et al. "Synthesis and characterization of amphiphilic phenylene ethynylene oligomers and their Langmuir-Blodgett films." Langmuir : the ACS journal of surfaces and colloids vol. 22,21 (2006): 8813-20. doi: https://doi.org/10.1021/la060914k
Tang Z, Hicks RK, Magyar RJ, Tretiak S, Gao Y, Wang HL. Synthesis and characterization of amphiphilic phenylene ethynylene oligomers and their Langmuir-Blodgett films. Langmuir. 2006 Oct 10;22(21):8813-20. doi: 10.1021/la060914k. PMID: 17014122.
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Langmuir. 2006 Oct 10;22(21):8813-20. doi: 10.1021/la060914k.

Synthesis and characterization of amphiphilic phenylene ethynylene oligomers and their Langmuir-Blodgett films.

Langmuir : the ACS journal of surfaces and colloids

Zhexiong Tang, Raea K Hicks, Rudolph J Magyar, Sergei Tretiak, Yuan Gao, Hsing-Lin Wang

Affiliations

  1. PCAS, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.

PMID: 17014122 DOI: 10.1021/la060914k

Abstract

We report the synthesis of a series of amphiphilic molecular building blocks that can be self-assembled at the air-water interface to form two- and three-dimensional nanostructures with tunable optoelectronic properties. Compression of these molecular building blocks using the Langmuir-Blodgett method gives rise to monolayer and multilayer thin films with different packing densities and electronic properties that are tunable due to varying pi-pi (hydrophobic) interactions. Depending on the noncovalent interaction between chromophores, we observe a transition toward denser packing with increasing number of phenylene ethynylene repeat units. Additionally, we use quantum-chemical simulations to help determine the excited-state electronic structure, intermolecular interactions, and packing trends. Our results demonstrate that the interplay between dipole-dipole and pi-pi interactions dominates the formation of thin films with various packing densities and determines the associated optical properties.

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