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. 2017 Jun 5;7(2):28. doi: 10.3390/membranes7020028

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Molecular weight of PIM-1 prepared by polycondensation with excess of 2 above 1. Reaction conditions: K₂CO₃ (2.04 molar towards 1), 3 h at 55 °C in DMF. SEC measurements detected by RI (squares) and MALS (triangles).