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NMR Studies into the Potential Interactions of Fullerene C60 with Tetraphenylporphyrin and Some of Its Derivatives
المؤلفون المشاركون
المصدر
Advances in Physical Chemistry
العدد
المجلد 2010، العدد 2010 (31 ديسمبر/كانون الأول 2010)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2010-09-20
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
الملخص EN
1H NMR relaxation studies were employed to investigate potential interactions between C60 and tetraphenylporphyrin, H2[TPP], and parasubstituted tetraphenylporphyrins, H2[(p-X)4TPP], where X = CN and OCH3 in solution.
The substituted porphyrins provided a means by which to investigate the role that electronic effects play in the interaction process.
A comparison of the relaxation rates, R1, and correlation times, τC, of the pyrrole and phenyl hydrogens in these complexes, without and with the presence of C60, revealed that the introduction of C60 into solution did not have a noticeable effect on R1 and τC of these protons in H2[TPP], indicating the absence of long-term intermolecular interaction at either of these two sites.
A similar analysis of the two protons in the other two substituted tetraphenylporphyrin analogs revealed slower molecular dynamics indicating the presence of intermolecular interactions.
Stronger interactions were observed in H2[(p-OCH3)4TPP] indicating that the electron-donating abilities of the -OCH3 group promote the interaction process.
Our results indicate that it is very likely that enhanced selectivity in the chemical purifications of fullerenes and metallofullerenes can be achieved by employing tetraphenylporphyrin-silica stationary phases which have been modified with electron-donating groups.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Obondi, C.& Rodriguez, A. A.. 2010. NMR Studies into the Potential Interactions of Fullerene C60 with Tetraphenylporphyrin and Some of Its Derivatives. Advances in Physical Chemistry،Vol. 2010, no. 2010, pp.1-9.
https://search.emarefa.net/detail/BIM-446439
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Obondi, C.& Rodriguez, A. A.. NMR Studies into the Potential Interactions of Fullerene C60 with Tetraphenylporphyrin and Some of Its Derivatives. Advances in Physical Chemistry No. 2010 (2010), pp.1-9.
https://search.emarefa.net/detail/BIM-446439
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Obondi, C.& Rodriguez, A. A.. NMR Studies into the Potential Interactions of Fullerene C60 with Tetraphenylporphyrin and Some of Its Derivatives. Advances in Physical Chemistry. 2010. Vol. 2010, no. 2010, pp.1-9.
https://search.emarefa.net/detail/BIM-446439
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-446439
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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