Backbone Stiffness‐Dependent Photoluminescence of Pendant Fluorophores in Organic Nanoparticles. - Yin, Rongguan; Lin, Ting‐Chih; Chen, Sihan; Murata, Hironobu; Luo, Lianshun; Hu, Xiaolei; Kim, Khidong; DiFiglia, Elizabeth; Bockstaller, Michael R.; Matyjaszewski, Krzysztof (Small Structures, 2026)