Research Article

A MALDI-TOF MS study of lanthanide(III)-cored poly(phenylenevinylene) dendrimers

  1. Joaquín C. García-Martínez,
  2. Carmen Atienza,
  3. Milagros de la Peña,
  4. Ana C. Rodrigo,
  5. Juan Tejeda,
  6. Julián Rodríguez-López*

Article first published online: 3 DEC 2008

DOI: 10.1002/jms.1534

Issue

Journal of Mass Spectrometry

Journal of Mass Spectrometry

Volume 44, Issue 5, pages 613–620, May 2009

Additional Information

How to Cite

García-Martínez, J. C., Atienza, C., de la Peña, M., Rodrigo, A. C., Tejeda, J. and Rodríguez-López, J. (2009), A MALDI-TOF MS study of lanthanide(III)-cored poly(phenylenevinylene) dendrimers. Journal of Mass Spectrometry, 44: 613–620. doi: 10.1002/jms.1534

Author Information

  1. Área de Química Orgánica, Facultad de Química, Universidad de Castilla-La Mancha, Avda. Camilo José Cela, 10, 13071-Ciudad Real, Spain

*Área de Química Orgánica, Facultad de Química, Universidad de Castilla-La Mancha, Avda. Camilo José Cela, 10, 13071-Ciudad Real, Spain.

Publication History

  1. Issue published online: 11 MAY 2009
  2. Article first published online: 3 DEC 2008
  3. Manuscript Accepted: 29 OCT 2008
  4. Manuscript Received: 9 SEP 2008

Funded by

  • Spanish Ministerio de Educación y Ciencia. Grant Numbers: NAN2004-08843-C05-02, CTQ2006-08871
  • Junta de Comunidades de Castilla-La Mancha. Grant Numbers: PCI08-0033, PAI07-0007-1001

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Keywords:

  • dendrimers;
  • poly(phenylenevinylene);
  • lanthanide complexes;
  • MALDI-TOF

Abstract

An extensive study by matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry (MS) of some first-generation and second-generation lanthanide(III)-cored poly(phenylenevinylene) dendrimers is described. The complexes were obtained by self-assembly of suitably functionalized carboxylate dendrons around the lanthanide ion (La3+, Er3+). Fourier transform infrared (FT-IR) spectroscopy gave reasonable evidence for the proposed structures. However, MS was used to ascertain unequivocally the complex formation. The most reliable results were found in the negative reflector mode, using 2-[(2E)-3-(4-tert-butylphenyl)-2-methylprop-2-enylidene]malononitrile (DCTB) as matrix. Well-defined and highly resolved base peaks corresponding to negative ions of [Gn4La]− and [Gn4Er]− were found in all cases, with an excellent match between the theoretical and observed isotope distributions. However, the 3 : 1 stoichiometry used in the synthesis guarantees an empirical formula Gn3Ln for the complexes. Copyright © 2008 John Wiley & Sons, Ltd.

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