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Comparison of MALDI-TOF mass spectra obtained for (a) linear poly(ε-caprolactone) (Mn = 2440 PDI = 1.02) and (b) cyclic poly(ε-caprolactone) (Mn = 2400 PDI = 1.02). Insets (c) and (d) correspond to linear and cyclic poly (ε-caprolactone), respectively, where the expanded region between 2340 and 2380 m/z, highlights the disappearance of the (red) post-source fragment ions and the (green) in-source fragment ions as a result of the aromatic stabilization of the triazole product.
