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Thermal behaviour and slow molecular mobility in two isomers of biphenylmethanol

DSC and TSDC study

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Abstract

The thermal behaviour of 2- and 4-biphenylmethanol were studied by differential scanning calorimetry (DSC). It was found that the 2-isomer shows a relatively strong resistance to crystallisation, and that it easily vitrifies on cooling. Oppositely, 4-biphenylmethanol readily crystallizes on cooling. The slow molecular mobility of 2-biphenylmethanol in the amorphous solid state was studied by DSC and by thermally stimulated depolarisation currents (TSDC). Both techniques indicate that 2-biphenylmethanol is a relatively strong glass-former, with a fragility index of ~50 in the Angell's scale.

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Authors and Affiliations

  1. Centro de Química Estrutural, Complexo I, IST, Lisboa, Portugal, 1049-001, Av. Rovisco Pais

    Diogo H P & Pinto S S

  2. Centro de Química-Física Molecular, Complexo I, IST, Lisboa, Portugal, 1049-001 , Av. Rovisco Pais

    Moura Ramos J J

Authors
  1. Diogo H P
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  2. Pinto S S
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  3. Moura Ramos J J
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Correspondence to Diogo H P.

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Diogo, H.P., Pinto, S.S. & Moura Ramos, J.J. Thermal behaviour and slow molecular mobility in two isomers of biphenylmethanol . J Therm Anal Calorim 83, 361–366 (2006). https://doi.org/10.1007/s10973-005-7275-6

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  • DOI: https://doi.org/10.1007/s10973-005-7275-6

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