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Synthesis and characterization of amphiphilic phenylene ethynylene oligomers and their Langmuir-Blodgett films.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tang, Zhexiong Hicks, Raea K. Tretiak, Sergei Gao, Yuan Wang, Hsing-Lin |
| Copyright Year | 2006 |
| 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. |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/la060914k |
| PubMed reference number | 17014122 |
| Journal | Medline |
| Volume Number | 22 |
| Issue Number | 21 |
| Alternate Webpage(s) | http://cnls.lanl.gov/~serg/postscript/la060914k.pdf |
| Alternate Webpage(s) | https://doi.org/10.1021/la060914k |
| Journal | Langmuir : the ACS journal of surfaces and colloids |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
