Over the past 50 years, the field of organic photochemistry has produced a wealth of information, from reaction mechanisms to useful methodology for synthetic transformations. Many technological innovations have been realized during this time due to the exploits of this knowledge, including photoresists and lithography for the production of integrated circuits, photocharge generation for xerography, multidimensional fluorescence imaging, photodynamic therapy for cancer treatment, photoinitiated polymerization, and UV protection of plastics and humans through the development of UV absorbing compounds and sunscreens, to name a few. The scientific basis of many of these processes continues to be utilized today, particularly in the development of organic three-dimensional optical data storage media and processes and light-activated medicine.  Onium salt photoacid generators (PAGs), pioneered by James V. Crivello plays a prominent role in many of these emerging technologies and have influenced numerous fields ranging from photocured coatings to high-resolution photoresists used in integrated circuit chip manufacturing.  The impact of these materials has inspired research in stereolithography and intriguing new frontiers in 3D optical data storage and biomedical research.  Research will be presented in the use of onium salts in photoinitiated ring-opening polymerization of monomers for stereolithography, two-photon lithography, novel strategies for 3D optical data storage, and oxygen-independent photodynamic cancer therapy.

Adventures with onium salts: From photolithography and 3D optical data storage to photodynamic therapy

251st National Meeting (2016)

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