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影响因子：16.6

DOI码：10.1002/anie.201903553

发表刊物：Angewandte Chemie International Edition

摘要：Oil paints comprise pigments, drying oils, and additives that together confer desirable properties, but can react to form metal carboxylates (soaps) that may damage artworks over time. To obtain information on soap formation and aggregation, we introduce a new tapping-mode measurement paradigm for the photothermal induced resonance (PTIR) technique that enables nanoscale IR spectroscopy and imaging on highly heterogenous and rough paint thin sections. PTIR is used in combination with μ-computed tomography and IR microscopy to determine the distribution of metal carboxylates in a 23-year old oil paint of known formulation. Results show that heterogeneous agglomerates of Al-stearate and a Zn-carboxylate complex with Zn-stearate nano-aggregates in proximity are distributed randomly in the paint. The gradients of zinc carboxylates are unrelated to the Al-stearate distribution. These measurements open a new chemically sensitive nanoscale observation window on the distribution of metal soaps that can bring insights for understanding soap formation in oil paint.

合写作者：Victoria Beltran,Georg Ramer,Georges Pavlidis,Dilworth Y. Parkinson,Mathieu Thoury,Tyler Meldrum,Andrea Centrone

第一作者：Xiao Ma

论文类型：期刊论文

通讯作者：Barbara H. Berrie

卷号：58,

期号：34

页面范围：11652-11656

是否译文：否

发表时间：2019-06-21

收录刊物：SCI

发布期刊链接：https://onlinelibrary.wiley.com/doi/10.1002/anie.201903553