We present the synthesis of substituted ketones, conjugated analogs of Michlerâs ketone. These molecules exhibit broadband TPA properties between 700 and 1100 nm due to a charge transfer from the terminal amino groups to the central ketone function and with maximum cross sections from 200 to 325 Ã 10â50 cm4 s photonâ1. Moreover, they present an interesting reducing character for radical creation. Both properties allow us to consider these molecules as promising photoinitiators of polymerization in the near infrared.
我们合成了取代酮--Michler酮的共轭类似物。由于电荷从末端
氨基转移到中心酮功能,这些分子在 700 至 1100 纳米波长范围内表现出宽带
TPA 特性,最大截面为 200 至 325 Ã 10â50 cm4 s 光子1。此外,它们还能产生有趣的还原性自由基。这两种特性使我们能够将这些分子视为有前景的近红外聚合光
引发剂。