{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,23]],"date-time":"2026-08-23T15:37:20Z","timestamp":1787499440809,"version":"build-2736575974"},"reference-count":32,"publisher":"Wiley","issue":"47","license":[{"start":{"date-parts":[[2015,10,20]],"date-time":"2015-10-20T00:00:00Z","timestamp":1445299200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Italian MIUR","award":["2010329WPF_001"],"award-info":[{"award-number":["2010329WPF_001"]}]},{"name":"Italian MIUR","award":["SD04A"],"award-info":[{"award-number":["SD04A"]}]},{"name":"FWO (Brussels)","award":["G.0C12.13"],"award-info":[{"award-number":["G.0C12.13"]}]},{"name":"FWO (Brussels)","award":["G.0704.08"],"award-info":[{"award-number":["G.0704.08"]}]},{"name":"FWO (Brussels)","award":["G.01769.09"],"award-info":[{"award-number":["G.01769.09"]}]},{"name":"EU"},{"name":"Fund Inbev-Baillet Latour (Brussels)"},{"name":"CNR"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Angew Chem Int Ed"],"published-print":{"date-parts":[[2015,11,16]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    This paper presents firm evidence for the chemical alteration of chrome yellow pigments in Van\u2005Gogh\u2019s\n                    <jats:italic>Sunflowers<\/jats:italic>\n                    (Van\u2005Gogh Museum, Amsterdam). Noninvasive in situ spectroscopic analysis at several spots on the painting, combined with synchrotron\u2010radiation\u2010based X\u2010ray investigations of two microsamples, revealed the presence of different types of chrome yellow used by Van\u2005Gogh, including the lightfast PbCrO\n                    <jats:sub>4<\/jats:sub>\n                    and the sulfur\u2010rich PbCr\n                    <jats:sub>\n                      1\u2212\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    S\n                    <jats:sub>\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    O\n                    <jats:sub>4<\/jats:sub>\n                    (\n                    <jats:italic>x<\/jats:italic>\n                    \u22480.5) variety that is known for its high propensity to undergo photoinduced reduction. The products of this degradation process, i.e., Cr\n                    <jats:sup>III<\/jats:sup>\n                    compounds, were found at the interface between the paint and the varnish. Selected locations of the painting with the highest risk of color modification by chemical deterioration of chrome yellow are identified, thus calling for careful monitoring in the future.\n                  <\/jats:p>","DOI":"10.1002\/anie.201505840","type":"journal-article","created":{"date-parts":[[2015,10,20]],"date-time":"2015-10-20T11:30:50Z","timestamp":1445340650000},"page":"13923-13927","source":"Crossref","is-referenced-by-count":62,"title":["Evidence for Degradation of the Chrome Yellows in Van\u2005Gogh\u2019s\n                    <i>Sunflowers<\/i>\n                    : A Study Using Noninvasive In\u2005Situ Methods and Synchrotron\u2010Radiation\u2010Based X\u2010ray Techniques"],"prefix":"10.1002","volume":"54","author":[{"given":"Letizia","family":"Monico","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Koen","family":"Janssens","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ella","family":"Hendriks","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Frederik","family":"Vanmeert","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Geert","family":"Van\u2005der\u2005Snickt","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marine","family":"Cotte","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gerald","family":"Falkenberg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brunetto Giovanni","family":"Brunetti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Costanza","family":"Miliani","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2015,10,20]]},"reference":[{"key":"e_1_2_3_1_2","unstructured":"http:\/\/vangoghletters.org\/vg\/ Letter 668 (accessed August 2015);"},{"key":"e_1_2_3_2_2","unstructured":"http:\/\/vangoghletters.org\/vg\/ Letters 593 595 684 687 710 863 (accessed August 2015)."},{"key":"e_1_2_3_3_2","volume-title":"The Sunflowers are mine: The story of Van Gogh\u2019s masterpiece","author":"Bailey M.","year":"2013"},{"key":"e_1_2_3_4_2","first-page":"17","author":"Van Tilborgh L.","year":"2001","journal-title":"Van Gogh Museum Journal"},{"key":"e_1_2_3_5_2","first-page":"187","volume-title":"Artists\u2019 Pigments. 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