{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,13]],"date-time":"2026-09-13T02:09:56Z","timestamp":1789265396882,"version":"build-2803163510"},"reference-count":15,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2025,1,20]],"date-time":"2025-01-20T00:00:00Z","timestamp":1737331200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"IER Foundation 2021","award":["IERF202101"],"award-info":[{"award-number":["IERF202101"]}]},{"name":"IER Foundation 2021","award":["HZQB-KCZYB-2020083"],"award-info":[{"award-number":["HZQB-KCZYB-2020083"]}]},{"name":"IER Foundation 2021","award":["62204213"],"award-info":[{"award-number":["62204213"]}]},{"name":"IER Foundation 2021","award":["2023A04J0405"],"award-info":[{"award-number":["2023A04J0405"]}]},{"name":"Hetao Shenzhen-Hong Kong Science and Technology Innovation Cooperation Zone","award":["IERF202101"],"award-info":[{"award-number":["IERF202101"]}]},{"name":"Hetao Shenzhen-Hong Kong Science and Technology Innovation Cooperation Zone","award":["HZQB-KCZYB-2020083"],"award-info":[{"award-number":["HZQB-KCZYB-2020083"]}]},{"name":"Hetao Shenzhen-Hong Kong Science and Technology Innovation Cooperation Zone","award":["62204213"],"award-info":[{"award-number":["62204213"]}]},{"name":"Hetao Shenzhen-Hong Kong Science and Technology Innovation Cooperation Zone","award":["2023A04J0405"],"award-info":[{"award-number":["2023A04J0405"]}]},{"name":"National Natural Science Foundation of China","award":["IERF202101"],"award-info":[{"award-number":["IERF202101"]}]},{"name":"National Natural Science Foundation of China","award":["HZQB-KCZYB-2020083"],"award-info":[{"award-number":["HZQB-KCZYB-2020083"]}]},{"name":"National Natural Science Foundation of China","award":["62204213"],"award-info":[{"award-number":["62204213"]}]},{"name":"National Natural Science Foundation of China","award":["2023A04J0405"],"award-info":[{"award-number":["2023A04J0405"]}]},{"name":"Guangzhou Municipal Science and Technology Program","award":["IERF202101"],"award-info":[{"award-number":["IERF202101"]}]},{"name":"Guangzhou Municipal Science and Technology Program","award":["HZQB-KCZYB-2020083"],"award-info":[{"award-number":["HZQB-KCZYB-2020083"]}]},{"name":"Guangzhou Municipal Science and Technology Program","award":["62204213"],"award-info":[{"award-number":["62204213"]}]},{"name":"Guangzhou Municipal Science and Technology Program","award":["2023A04J0405"],"award-info":[{"award-number":["2023A04J0405"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>The effectiveness of ultraviolet-C light-emitting diodes (UVC LEDs) is currently limited by the lack of suitable encapsulation materials, restricting their use in sterilization, communication, and in vivo cancer tumor inhibition. This study evaluates various silicone oils for UVC LED encapsulation. A material aging experiment was conducted on CF1040 (octamethylcyclotetrasiloxane), HF2020 (methyl hydro polysiloxanes), and MF2020-1000 (polydimethylsiloxane) under UVC radiation for 1000 h. The analysis assessed transmittance changes and chemical composition alterations throughout the aging process. Notably, HF2020 showed an increase in transmittance before 500 h, indicating a curing process attributed to the photolysis of Si-H, leading to the formation of Si-O-Si. Further testing on 265 nm UVC LEDs, both with and without HF2020 encapsulation, showed that the encapsulated LEDs exhibited a remarkable maximum increase of 27% in radiant power compared to their unencapsulated counterparts. Additionally, these encapsulated LEDs sustained higher radiant power levels during the first 200 h of operation. Notably, its potential application in photodynamic therapy is significant; by activating photosensitizers with higher UVC exposure, it facilitates the rapid production of reactive oxygen species, leading to effective cancer cell destruction within a short timeframe.<\/jats:p>","DOI":"10.3390\/polym17020250","type":"journal-article","created":{"date-parts":[[2025,1,20]],"date-time":"2025-01-20T07:47:37Z","timestamp":1737359257000},"page":"250","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Characterization of Self-Cured Silicone Oils for Encapsulation of Ultraviolet-C Light-Emitting Diodes"],"prefix":"10.3390","volume":"17","author":[{"given":"Xing","family":"Qiu","sequence":"first","affiliation":[{"name":"HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute, Futian, Shenzhen 518000, China"},{"name":"Smart Manufacturing Thrust, Hong Kong University of Science and Technology (Guangzhou), Nansha, Guangzhou 511400, China"},{"name":"PKU-HKUST Shenzhen-Hongkong Institution, Nanshan, Shenzhen 518057, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qianhang","family":"Yu","sequence":"additional","affiliation":[{"name":"HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute, Futian, Shenzhen 518000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuanjie","family":"Cheng","sequence":"additional","affiliation":[{"name":"Electronic Packaging Laboratory, Hong Kong University of Science and Technology, Hong Kong SAR, China"},{"name":"Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8669-4052","authenticated-orcid":false,"given":"Jeffery C. 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