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Here, a wearable, colorimetric UV film dosimeter that provides color transition, from purple to transparent, is reported to indicate the UV dose. The film dosimeter is made of a purple photodegradable dye ((2Z,6Z)\u20102,6\u2010bis(2\u2010(2,6\u2010diphenyl\u20104H\u2010thiopyran\u20104\u2010ylidene)ethylidene)cyclohexanone or DTEC) blended in low density polyethylene film. The DTEC film discolored 3.3 times more under the exposure of UV light (302 nm) than visible light (543 nm), and a UV bandpass filter is developed to increase this selectivity to UV light. The DTEC film completely discolors to transparency in 2 h under an AM 1.5 solar simulator, suggesting the potential as an indicator for individuals with types I\u2013VI skin to predict interventions to avoid sunburn. Finally, the DTEC film is integrated with the UV bandpass filter on a wristband to function as a wearable dosimeter for low cost and convenient monitoring of sunlight exposure.<\/jats:p>","DOI":"10.1002\/admt.201800037","type":"journal-article","created":{"date-parts":[[2018,4,23]],"date-time":"2018-04-23T04:52:42Z","timestamp":1524459162000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":41,"title":["A Wearable Colorimetric Dosimeter to Monitor Sunlight Exposure"],"prefix":"10.1002","volume":"3","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4304-0745","authenticated-orcid":false,"given":"Junxin","family":"Wang","sequence":"first","affiliation":[{"name":"Department of NanoEngineering University of California, San Diego  9500 Gilman Drive La Jolla CA 92093 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ananthakrishnan Soundaram","family":"Jeevarathinam","sequence":"additional","affiliation":[{"name":"Department of NanoEngineering University of California, San Diego  9500 Gilman Drive La Jolla CA 92093 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anamik","family":"Jhunjhunwala","sequence":"additional","affiliation":[{"name":"Department of Bioengineering University of California, San Diego  9500 Gilman Drive La Jolla CA 92093 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haowen","family":"Ren","sequence":"additional","affiliation":[{"name":"Center for Memory and Recording Research University of California, San Diego  9500 Gilman Drive La Jolla CA 92093 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeanne","family":"Lemaster","sequence":"additional","affiliation":[{"name":"Department of NanoEngineering University of California, San Diego  9500 Gilman Drive La Jolla CA 92093 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanqi","family":"Luo","sequence":"additional","affiliation":[{"name":"Department of NanoEngineering University of California, San Diego  9500 Gilman Drive La Jolla CA 92093 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David P.","family":"Fenning","sequence":"additional","affiliation":[{"name":"Department of NanoEngineering University of California, San Diego  9500 Gilman Drive La Jolla CA 92093 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eric E.","family":"Fullerton","sequence":"additional","affiliation":[{"name":"Center for Memory and Recording Research University of California, San Diego  9500 Gilman Drive La Jolla CA 92093 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jesse V.","family":"Jokerst","sequence":"additional","affiliation":[{"name":"Department of NanoEngineering University of California, San Diego  9500 Gilman Drive La Jolla CA 92093 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2018,4,23]]},"reference":[{"key":"e_1_2_7_1_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1011-1344(01)00201-9"},{"key":"e_1_2_7_1_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00403-012-1212-x"},{"key":"e_1_2_7_1_3","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-4632.2010.04474.x"},{"key":"e_1_2_7_1_4","doi-asserted-by":"publisher","DOI":"10.1039\/c1pp05144j"},{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1001\/archderm.138.11.1462"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.1312933110"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.88.22.10124"},{"key":"e_1_2_7_4_2","first-page":"1179","volume":"152","author":"Atillasoy E. 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