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Updated: Nov 9, 2025

Micropunching Lithography for Generating Micro- and Submicron-patterns on Polymer Substrates
Published on: July 2, 2012
Photo-controlled growth of polymeric submicronsized particles
João Avó1,2, João C Lima3, A Jorge Parola3
1CQFM-IN and IBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Portugal. joao.avo@tecnico.ulisboa.pt.
Abstract:
A tripodal coumarin derivative shows complex photoreactivity, changing from intra- to intermolecular photodimerization with increasing concentration. At high concentration, the compound undergoes efficient photopolymerization, resulting in the formation of polymeric submicron-sized particles. The size of these particles can be precisely increased through photoirradiation, without affecting their polydispersity.

