کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1328570 977594 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New stable, isolable triarylmethyl based dyes absorbing in the near infrared
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
New stable, isolable triarylmethyl based dyes absorbing in the near infrared
چکیده انگلیسی

A series of new intensely coloured multicharged methylium compounds containing the 4-[2-ferrocenylethenyl]phenyl group and with significant electronic absorption in the near infrared have been prepared via acidification of the tertiary carbinols obtained by reaction of 4-[FcCHCH]C6H4Li with diethyl isophthalate, diethyl terephthalate, diethyl phthalate or the triethyl ester of 1,3,5-benzene carboxylic acid. Even more stable dyes were prepared from two new triarylmethanol derivatives containing 2,6-dimethoxy-4-[2-(ferrocenyl)ethenyl]phenyl or 2,6-dimethoxy-4-[2-[4-(dimethylamino)phenyl]ethenyl]phenyl groups which were prepared by reaction of 4-[FcCHCH]-2,6-MeO2C6H2Li or 4-[4-Me2NC6H4CHCH]-2,6-MeO2C6H2Li (Fc = ferrocenyl) with diethyl carbonate. These carbinols on treatment with acid deposit dark-purple crystals which have been isolated and characterised spectroscopically. They absorb in the near infrared and, whereas their solutions begin to decolourise only after several days, they display long-term stability to air and moisture in the solid state.

Stable carbocationic dyes absorbing in the near infrared have been prepared from triarylmethanol derivatives containing 2,6-dimethoxy-4-[2-(ferrocenyl)ethenyl]phenyl or 2,6-dimethoxy-4-[2-[4-(dimethylamino)phenyl]ethenyl]phenyl groups. These carbinols on treatment with acid deposit dark-purple crystals which display long-term stability in the solid state.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Organometallic Chemistry - Volume 691, Issue 12, 1 June 2006, Pages 2785–2792
نویسندگان
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