Dynamic Self-assembly of Coordination Nanotubes.
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Accession number;04A0258587
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| Title;Dynamic Self-assembly of Coordination Nanotubes. |
| Author;
TASHIRO SHOHEI
(Univ. Tokyo, Graduate School, JPN)
TOMINAGA MASAHIDE
(Univ. Tokyo, Graduate School, JPN)
KAWANO MASAKI
(Univ. Tokyo, Graduate School, JPN)
SAKAMOTO SHIGERU
(Chiba Univ., Chemical Analysis Center, JPN)
YAMAGUCHI KENTARO
(Chiba Univ., Chemical Analysis Center, JPN)
FUJITA MAKOTO
(Univ. Tokyo, Graduate School, JPN)
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Journal Title;Abstracts. Symposium on Biofunctional Chemistry
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Journal Code:L0836A
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ISSN:
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VOL.18th;NO.;PAGE.8-9(2003)
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| Figure&Table&Reference;FIG.2, REF.1 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The dynamic assembly discussed here stems from the enPd(NO3)2 and new ligand, which has four tripyridine podands on benzene scaffold. At low concentration, mono end-capped tube 1 was quantitatively formed. The self-assembly of 1 was concomitant with the formation of a minor component. At higher concentration, 1 was gradually converted into the minor product, which was isolated as single crystals. The X-ray crystallographic analysis showed that this product is 3.0 nm long tube 2 consisting of two molecules of ligand and twelve Pd units. When the crystals of 2 were dissolved in D2O, this tube showed sufficient stability even on one month without interconversion to 1. At lower concentration, 1 and 2 are not in equilibrium despite the labile nature of PdII-pyridine coordination bonds. Thus, 1 is shown to be not thermodynamic but kinetically trapped structures. (author abst.) |
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