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Herein, the structure\u2013property relationships of molecular weight, activation temperature, and inclusion of a photocatalyst on the film-forming capabilities of CaproGlu are investigated. Using polycaprolactone of molecular weight 1000 Da allows for a non-inferior storage modulus and elasticity compared to a paste-like formulation while retaining the fluidity required for easy spreading. Increasing the activation temperature of CaproGlu results in lower viscosity and requires a larger dosage of light energy for gelation. The inclusion of an iridium photocatalyst allows for faster photoactivation kinetics with non-inferior rheological properties compared to controls. Preliminary skin sensitization assays show negative results for both CaproGlu and IrPC formulations, supporting the potential for topical usage.<\/jats:p>","DOI":"10.1021\/acsabm.5c02506","type":"journal-article","created":{"date-parts":[[2026,7,14]],"date-time":"2026-07-14T18:23:47Z","timestamp":1784053427000},"page":"6839-6846","source":"Crossref","is-referenced-by-count":0,"title":["Sunlight Activated, Film Forming Polymer Based on Diazirine Grafted Polycaprolactone"],"prefix":"10.1021","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0752-1584","authenticated-orcid":true,"given":"Elwin W. 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