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Sakakibara K, Chithra P, Das B, et al. Aligned 1-D nanorods of a π-gelator exhibit molecular orientation and excitation energy transport different from entangled fiber networks. J Am Chem Soc. 2014;136(24):8548-51doi: 10.1021/ja504014k.
Sakakibara, K., Chithra, P., Das, B., Mori, T., Akada, M., Labuta, J., Tsuruoka, T., Maji, S., Furumi, S., Shrestha, L. K., Hill, J. P., Acharya, S., Ariga, K., & Ajayaghosh, A. (2014). Aligned 1-D nanorods of a π-gelator exhibit molecular orientation and excitation energy transport different from entangled fiber networks. Journal of the American Chemical Society, 136(24), 8548-51. https://doi.org/10.1021/ja504014k
Sakakibara, Keita, et al. "Aligned 1-D nanorods of a π-gelator exhibit molecular orientation and excitation energy transport different from entangled fiber networks." Journal of the American Chemical Society vol. 136,24 (2014): 8548-51. doi: https://doi.org/10.1021/ja504014k
Sakakibara K, Chithra P, Das B, Mori T, Akada M, Labuta J, Tsuruoka T, Maji S, Furumi S, Shrestha LK, Hill JP, Acharya S, Ariga K, Ajayaghosh A. Aligned 1-D nanorods of a π-gelator exhibit molecular orientation and excitation energy transport different from entangled fiber networks. J Am Chem Soc. 2014 Jun 18;136(24):8548-51. doi: 10.1021/ja504014k. Epub 2014 Jun 03. PMID: 24873554.
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J Am Chem Soc. 2014 Jun 18;136(24):8548-51. doi: 10.1021/ja504014k. Epub 2014 Jun 03.

Aligned 1-D nanorods of a π-gelator exhibit molecular orientation and excitation energy transport different from entangled fiber networks.

Journal of the American Chemical Society

Keita Sakakibara, Parayalil Chithra, Bidisa Das, Taizo Mori, Misaho Akada, Jan Labuta, Tohru Tsuruoka, Subrata Maji, Seiichi Furumi, Lok Kumar Shrestha, Jonathan P Hill, Somobrata Acharya, Katsuhiko Ariga, Ayyappanpillai Ajayaghosh

Affiliations

  1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan.

PMID: 24873554 DOI: 10.1021/ja504014k

Abstract

Linear π-gelators self-assemble into entangled fibers in which the molecules are arranged perpendicular to the fiber long axis. However, orientation of gelator molecules in a direction parallel to the long axes of the one-dimensional (1-D) structures remains challenging. Herein we demonstrate that, at the air-water interface, an oligo(p-phenylenevinylene)-derived π-gelator forms aligned nanorods of 340 ± 120 nm length and 34 ± 5 nm width, in which the gelator molecules are reoriented parallel to the long axis of the rods. The orientation change of the molecules results in distinct excited-state properties upon local photoexcitation, as evidenced by near-field scanning optical microscopy. A detailed understanding of the mechanism by which excitation energy migrates through these 1-D molecular assemblies might help in the design of supramolecular structures with improved charge-transport properties.

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