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DNP-enhanced ultrawideline Pb-207 solid-state NMR spectroscopy: an application to cultural heritage science

TitleDNP-enhanced ultrawideline Pb-207 solid-state NMR spectroscopy: an application to cultural heritage science
Publication TypeJournal Article
Year of Publication2017
AuthorsKobayashi, T, Perras, FA, Murphy, A, Yao, Y, Catalano, J, Centeno, SA, Dybowski, C, Zumbulyadis, N, Pruski, M
JournalDalton Transactions
Volume46
Pagination3535-3540
Date Published03
Type of ArticleArticle
ISBN Number1477-9226
Accession NumberWOS:000397819000015
Keywordsadiabatic pulses, biradicals, chemistry, dynamic nuclear-polarization, high-frequency, inversion, lead carboxylates, oil paintings, reactivity, resonance, spectra
Abstract

(2) relaxation time of the basic lead carbonate phase hinders the acquisition of the NMR signal at room temperature. We additionally observe that the DNP enhancement is twice as large for lead palmitate (a lead soap, which is a degradation product implicated in the visible deterioration of lead-based oil paintings), than it is for the basic lead carbonate. This enhancement has allowed us to detect the formation of a lead soap in an aged paint film by Pb-207 SSNMR spectroscopy; which may aid in the detection of deterioration products in smaller samples removed from works of art.

DOI10.1039/c7dt00182g
Custom 1

3D Catalysis

Custom 2

LDRD

Alternate JournalDalton Trans.