Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 137, Issue 2, Pages 893-897Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja510946c
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Funding
- European Research Council [ERC-2012-ADG_20120216]
- Ministerio de Economia y Competitividad (MINECO) of Spain [CTQ2011-24652, BFU2011-29038]
- Ministerio de Economia y Competitividad (MINECO) of Spain (Ramon y Cajal)
- CAM (FOTOCARBON project) [S2013/ MIT-2841]
- Grants-in-Aid for Scientific Research [26102011, 14J00873, 26620104] Funding Source: KAKEN
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Controlling self-organization and morphology of chemical architectures is an essential challenge in the search for higher energy-conversion efficiencies in a variety of optoelectronic devices. Here, we report a highly ordered donor/acceptor functional material, which has been obtained using the principle of ionic self-assembly. Initially, an electron donor pi-extended tetrathiafulvalene and an electron-acceptor perylene-bisimide were self-organized separately obtaining n- and p-nanofibers at the same scale. These complementary n- and p-nanofibers are endowed with ionic groups with opposite charges on their surfaces. The synergic interactions establish periodic alignments between both nanofibers resulting in a material with alternately segregated donor/acceptor nanodomains. Photoconductivity measurements show values for these n/p-co-assembled materials up to 0.8 cm(2) V-1 s(-1), confirming the effectiveness in the design of these heterojunction structures. This easy methodology offers great possibilities to achieve highly ordered n/p-materials for potential applications in different areas such as optoelectonics and photovoltaics.
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