Lu, Youmei published the artcileHighly efficient two-photon initiated polymerization in solvent by using a novel two-photon chromophore and co-initiators, Safety of 2,6-Diisopropyl-N,N-dimethylaniline, the publication is Journal of Materials Chemistry (2004), 14(9), 1391-1395, database is CAplus.
Highly efficient two-photon initiated polymerization (TPIP) of acrylate monomer in dioxane solution was carried out using three-component photoinitiator system containing a novel D-¦Ð-A-¦Ð-D type chromophore I (Ia; R = Bu2N, Ib; R = Et2N), the co-initiator 6-diisopropyl-N,N-dimethylaniline (DDA) and diphenyliodonium salt, Ph2I+PF6–(PIP). The authors measured the quasi two-photon polymerization rates (Rp) based on scanning speed and the width of the written protruding line. Polymerization rates of in the presence of chromophore Ia and Ib were 113 ¦Ìm3 s-1 and 157 ¦Ìm3 s-1 in the case of the laser power 4.5 mW at 820 nm (pulse width: 85 fs, repetition rate 82 MHz ) resp. In order to estimate the mechanism of the photochem. reaction, the change of UV absorption of the three-component system, T-T transient absorption and the cyclic voltammetry (CV) of the novel chromophores were measured. The authors concluded that highly efficient electron transfer between DDA and the chromophore contributed to the long-lived radical cations of the chromophore. As a result, the generation of both DDA radicals and Ph radicals was ascribed to high sensitivity in TPIP.
Journal of Materials Chemistry published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C14H23N, Safety of 2,6-Diisopropyl-N,N-dimethylaniline.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia