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Application of ^1H DOSY for Facile Measurement of Polymer Molecular Weights

Li, Weibin and Chung, Hoyong and Daeffler, Chris and Johnson, Jeremiah A. and Grubbs, Robert H. (2012) Application of ^1H DOSY for Facile Measurement of Polymer Molecular Weights. Macromolecules, 45 (24). pp. 9595-9603. ISSN 0024-9297. PMCID PMC3545650. doi:10.1021/ma301666x.

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To address the practical issues of polymer molecular weight determination, the first accurate polymer weight-average molecular weight determination method in diverse living/controlled polymerization via DOSY (diffusion-ordered NMR spectroscopy) is reported. Based on the linear correlation between the logarithm of diffusion coefficient (log D) and the molecular weights (log M_w), external calibration curves were created to give predictions of molecular weights of narrowly dispersed polymers. This method was successfully applied to atom transfer radical polymerization (ATRP), reversible addition–fragmentation chain transfer (RAFT), and ring-opening metathesis polymerization (ROMP), with weight-average molecular weights given by this method closely correlated to those obtained from GPC measurement.

Item Type:Article
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URLURL TypeDescription CentralArticle
Johnson, Jeremiah A.0000-0001-9808-7172
Grubbs, Robert H.0000-0002-0057-7817
Additional Information:© 2012 American Chemical Society. Received: August 7, 2012. Revised: October 11, 2012. Published: December 4, 2012. Financial support by NIH (R01 GM031332-28) is acknowledged. The authors thank Marc M. Baum at the Oak Crest Institute for generously providing Bruker 300 MHz NMR for diffusion experiments. We also thank Prof. Paul G. Williard at Brown University for constructive advices.
Funding AgencyGrant Number
NIHR01 GM031332-28
Issue or Number:24
PubMed Central ID:PMC3545650
Record Number:CaltechAUTHORS:20130118-113515924
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Official Citation:Application of 1H DOSY for Facile Measurement of Polymer Molecular Weights Weibin Li, Hoyong Chung, Chris Daeffler, Jeremiah A. Johnson, and Robert H. Grubbs Macromolecules 2012 45 (24), 9595-9603
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:36480
Deposited By: Ruth Sustaita
Deposited On:18 Jan 2013 21:09
Last Modified:09 Nov 2021 23:22

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