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Optical and Magnetic Processes and the Side Chains of Diacetylenic Materials

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Abstract

Similarities in the molecular energy levels of alkylcarbazoles and aliphatic nitroxides motivate the detailed study of 4,4′-(butadiyne-l,4-diyl)-bis-(2,2,6,6-tetramethyl-4-hydroxypiperidin-l-oxyl) as a precursor to a ferromagnetic polymer. A more convenient synthetic route to is reported, and an X-ray-induced transformation of the β-phase of to the α-phase has been observed. The magnetic properties of and derived polymers have been studied using a SQUID system. The observed level of ferromagnetism found in samples of polymerized is comparable to the amount of trace iron materials detected in these samples.

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Authors and Affiliations

  1. GTE Laboratories Incorporated, 40 Sylvan Road, Waltham, 02254, Massachusetts, USA

    Daniel J Sandman, Gregory P. Hamill, Mark Levinson, Philip G. Rossoni & Elizabeth A Yost

  2. Francis Bitter National Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, 02139, Massachusetts, USA

    Georgia C. Papaefthymiou

Authors
  1. Daniel J Sandman
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  2. Gregory P. Hamill
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  3. Mark Levinson
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  4. Philip G. Rossoni
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  5. Elizabeth A Yost
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  6. Georgia C. Papaefthymiou
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Sandman, D.J., Hamill, G.P., Levinson, M. et al. Optical and Magnetic Processes and the Side Chains of Diacetylenic Materials. MRS Online Proceedings Library 173, 567–576 (1989). https://doi.org/10.1557/PROC-173-567

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