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Solution-phase and Magnetic Approach Towards Understanding Iron Gall Inks



Harshita Kumari, Steven R. Kline, Cindi L. Dennis, Andrew V. Mossine, Rick L. Paul, Carol A. Deakyne, Jerry L. Atwood


Crystallization of compounds of iron with polyphenols, such as iron gall inks, has been an ongoing challenge. As with iron-gall inks, iron complexes of 1,2,3-trihydroxphenol-containing marocycles have also proved difficult to crystallize. Despite this difficulty, however, our cohesive solid-state and solution-phase study of iron-containing C-methylpyrogallol[4]arene (PgC1) nanoassemblies has allowed us to deduce the structure of these species in both the solid and solution phases. Our combined use of SQUID, PGAA and SANS techniques indicates that, in both phase, the nanoassemblies have a tubular architecture with the iron in the framework. The magnetic analysis suggests a decanted or spiral arrangement of the iron in the 1:1.3::PgC1:Fe tubular arrays. The SANS analyses have also revealed the importance of pyridine concentration in the formation of tubes; in the absence of excess pyridine, the nanoassemblies have a spherical architecture.
Angewandte Chemie-International Edition


small-angle neutron scattering, prompt gamma activation analysis, self-assembled nanocapsules, nanotubes, SQUID


Kumari, H. , Kline, S. , Dennis, C. , Mossine, A. , Paul, R. , Deakyne, C. and Atwood, J. (2012), Solution-phase and Magnetic Approach Towards Understanding Iron Gall Inks, Angewandte Chemie-International Edition (Accessed June 15, 2024)


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Created August 12, 2012, Updated October 12, 2021