Conjugated NDI鈥揇onor Polymers: Exploration of Donor Size and Electrostatic Complementarity

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• 作者：Paul M. Alvey ; Robert J. Ono ; Christopher W. Bielawski ; Brent L. Iverson
• 刊名：Macromolecules
• 出版年：2013
• 出版时间：February 12, 2013
• 年：2013
• 卷：46
• 期：3
• 页码：718-726
• 全文大小：487K
• 年卷期：v.46,no.3(February 12, 2013)
• ISSN：1520-5835

文摘

Conjugated donor鈥揳cceptor copolymers comprised of electron-deficient 1,4,5,8-naphthalenetetracarboxylic diimide (NDI) linked to a series of relatively electron-rich aromatics via ethynyl spacers were synthesized and characterized. While LUMO levels remained constant at 鈭?.75 eV, HOMO levels were sensitive to the relatively electron-rich aromatic donors and systematically tuned from 鈭?.68 to 鈭?.17 eV. Regardless of the electron-rich comonomer, fluorescence and X-ray diffraction data were consistent with the polymer chains being assembled through the stacking of NDI moieties in an offset face-to-face fashion rather than alternating donor鈥揳cceptor stacks.