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Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels
11:34

Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels

Published on: September 8, 2016

[Spectra studies on the interaction of Mn2+ and poly N-isopropylacrylamide]

Shao-fen Guo1, Ming-qing Chen, Tian-hong Lu

  • 1School of Chemistry and Materials, Engineering, Southern Yangtze University, Wuxi 214036, China.

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|January 7, 2006
PubMed

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¹H NMR: Complex Splitting01:13

¹H NMR: Complex Splitting

A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied first.