کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
50433 46794 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impact of dendrimer density on epoxide enantioselectivity over an immobilised chiral salen complex
ترجمه فارسی عنوان
تأثیر تراکم دندریمر بر انعطاف پذیری اپوکسی در یک مجموعه ملین مسهل مجهز شده
کلمات کلیدی
دندریمر، سالنهای غیرقانونی، اپوکسی کردن
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• Decreasing dendrimer surface density increases enantioselectivity 5 fold
• Anchoring of salen complexes to dendrimers up to generation 4
• Increase in enantioselectivity as temperature is increased

PAMAM dendrimers were grown on two silica supports with different surface dendrimer densities and subsequently used to immobilise a chiral salen complex. The low density supported sample resulted in the complex exhibiting the ability to act enantioselectively while this effect was all but lost for sample based on the high density support. The negative effect of the high density material was attributed to undesired interactions between the complex and the support. An understanding of this effect allowed partial recovery of enantioselectivity for the high density support based catalysts through operating at higher temperatures.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 43, 5 January 2014, Pages 159–163
نویسندگان
, , , ,