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ISSN 1998-9539

Determination of the Methylpheophorbide а Association Degree by Diffusion Ordered NMR Spectroscopy (DOSY)

A. L. Stolypko,a,b and Dmitry V. Belykha@

aInstitute of Chemistry, Komi Scientific Center, Ural Division, Russian Academy of Sciences, 167982 Syktyvkar, Russian Federation

bSyktyvkar State University, 167000 Syktyvkar, Russian Federation

@Corresponding author E-mail:


DOI: 10.6060/mhc151085b

Macroheterocycles 2015 8(4) 389-393


The behavior of methylpheophorbide a in solution was studied by diffusion ordered NMR spectroscopy (DOSY), and its molecule association degree was estimated. It was found that methylpheophorbide a associates consist of an average of 4–5 molecules at room temperature. When the temperature increases the associate’s size decreases, and at 50–55 °C the associate’s size approaches to the size of the monomer.

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