Supramolecular fullerene/porphyrin interaction in solution : spectroscopic and theoretical investigations
Department of Chemistry, The University of Burdwan, Golapbag, Burdwan-713 104, West Bengal, India E-mail: sum_9974@rediffmail.com Fax : 91-342-2530452 Manuscript received 05 October 2010. accepted 30 December 2010 The present paper deals with the study of supramolecular interaction of an octaethyl Z...
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Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Zenodo
2011
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Subjects: | |
Online Access: | https://dx.doi.org/10.5281/zenodo.5764007 https://zenodo.org/record/5764007 |
Summary: | Department of Chemistry, The University of Burdwan, Golapbag, Burdwan-713 104, West Bengal, India E-mail: sum_9974@rediffmail.com Fax : 91-342-2530452 Manuscript received 05 October 2010. accepted 30 December 2010 The present paper deals with the study of supramolecular interaction of an octaethyl Zn 11 porphyrin molecule (I) with C 60 and C 70 In toluene medium by means of absorption spectrophotometric and luminescence measurements. Stoichiometry of both the fullerene complexes of 1 is determined to be 1 : 1. Binding affinity of I towards C 60 and C 70 is examined by both UV-Vis spectrophotometric and steady state fluorescence spectroscopic techniques, which reveals relatively large value of binding constant (K) for the c 70 /1 system (~ 23350 dml mol -1 ) in comparison to C 60 /1 system (i.e. ~11455 dm 3 mol -1 ). Quantum chemical calculations at molecular mechanics level offer Insight into the geometric structure of the supramolecules and give formidable support In favour of large value of K for the C 70 /1 system in terms of the heat of formation value of the fullerene/1 complexes. |
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