Quantum yield determination for photolysis of photoimageable polymer in thin films

Highly Fluorescent and Photochromic Diarylethene Oligomer Bridged by p-Phenylenevinylene

“…Interestingly, photochromic conversion of BTF−PPV was high as determined from the slope of the absorbance increase with irradiation time . The quantum yield of photocyclization (Φ pc ) for 3 was determined as 0.38, which was comparable to that of tetramer (0.40 in hexane) bridged by ethynylene group …”

Tetraorganylborate salts as convenient precursors for photogeneration of tertiary amines

“…This is not the case if the borate complexes are part of a polymer as a pendant group. 22 Since the tetraorganylborate salts formed amines upon photolysis, we tested them as curing agents for thermally driven amine catalyzed epoxy crosslinking. 23 Target complexes were incorporated in a solid matrix of a polymer having pendant epoxy groups, poly(glycidyl methacrylate).…”

Highly Active Visible-Light Photocatalysts for Curing a Ceramic Precursor1

“…Our interest is in using laser techniques (stereolithography) 22-26 and photoimaging − to produce shaped preceramic objects or thin-film patterns that can be converted into ceramic with retention of the photocured shapes and patterns. For this work platinum(II) bis(β-diketonate) complexes [Pt(L) 2 ] have been employed as hydrosilation photocatalysts. , The utility of Pt(L) 2 for photopolymerization and photocuring of carbosilanes was demonstrated with the UV absorbing homologue platinum(II) bis(acetylacetonate), or Pt(acac) 2 .…”

“…Highly crosslinked polymers satisfy this requirement. 21 Our interest is in using laser techniques (stereolithography) [22][23][24][25][26] and photoimaging [27][28][29][30] to produce shaped preceramic objects or thin-film patterns that can be converted into ceramic with retention of the photocured shapes and patterns. For this work platinum(II) bis(β-diketonate) complexes [Pt(L) 2 ] have been employed as hydrosilation photocatalysts.…”