Localized Electronic Excitations in Phenylacetylene Dendrimers
نویسندگان
چکیده
منابع مشابه
Localized Electronic Excitations in Phenylacetylene Dendrimers
Electron-hole pairs created upon optical excitation of conjugated dendrimers (fractal antenna macromolecules) are shown to be localized within segments connected by benzene rings substituted at the meta-position. The absorption spectra of two families of dendrimers are analyzed using collective electronic normal modes representing the changes in charge and bond-order distributions induced by th...
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Traditional pictures of optical properties in phenylacetylene dendrimers view the molecule as a collection of independent chromophores, linked by meta-substitution at the central phenyl ring. While this picture is reasonable for explaining the observed absorption trends, it breaks down in describing the emission behavior. We utilize a combination of ab initio theory and experiment to demonstrat...
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ژورنال
عنوان ژورنال: The Journal of Physical Chemistry B
سال: 1998
ISSN: 1520-6106,1520-5207
DOI: 10.1021/jp980745f