A mild method for rapid tert-butyldiphenylsilylation of primary and secondary alcohols
作者:Steven A. Hardinger、Ngadi Wijaya
DOI:10.1016/s0040-4039(00)79237-9
日期:1993.6
A rapid and efficient method for the protection of primary and secondary alcohols as their tert-butyldiphenylsilyl (tBDPS) ethers was developed. Reaction of the alcohol and tBDPSCl in DMF with AgNO3, NH4NO3, or NH4ClO4 provides good yields of the corresponding silyl ethers
开发了一种快速有效的方法来保护伯醇和仲醇的叔丁基二苯基甲硅烷基(tBDPS)醚。醇和tBDPSCl在DMF中与AgNO 3,NH 4 NO 3或NH 4 ClO 4的反应可提供相应甲硅烷基醚的良好收率
Efficient fully functionalized photorefractive polymethacrylates with infrared sensitivity and different spacer lengths
作者:Christiaan Engels、David Van Steenwinckel、Eric Hendrickx、Mark Schaerlaekens、André Persoons、Celest Samyn
DOI:10.1039/b102489m
日期:2002.3.21
A series of photorefractive polymethacrylates, containing a Disperse Red type chromophore and carbazole as charge transport agent with various spacer lengths, was synthesized and characterized. The photorefractive effect of these materials was studied by four-wave mixing and two beam-coupling at 780 nm after sensitization with 1 wt% TNFM. We have found a gain coefficient of Γ
= 140 cm−1 at an applied electric field of 60 V µm−1 and complete internal diffraction at an applied electric field of 52 V µm−1. For fully functionalized photorefractive polymers, these values rank among the highest reported up to date.