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Synthesis and ultrafast spectroscopic study of new [6,6]methanofullerenes

IR@NPL: CSIR-National Physical Laboratory, New Delhi


Field	Value

Title	Synthesis and ultrafast spectroscopic study of new [6,6]methanofullerenes

Creator	Naqvi, Samya Gupta, Neha Kumari, Neelam Jewariya, Mukesh Kumar, Pramod Kumar, Rachana Chand, Suresh

Subject	Chemistry

Description	Ultrafast transient absorption and terahertz spectroscopic studies have been performed on new [6,6] methanofullerenes synthesized by the reaction of diazomethane (generated in situ from their hydrazone precursor) with fullerene[60] via our eco-friendly methodology, i.e., amine-assisted 1,3 dipolar cycloaddition (AACA). Synthesized materials have been characterized by different spectroscopic techniques for their structure establishment, including terahertz spectroscopy to study changes in spectra on functionalization. Attachment of different types of functional groups on exohedral chains resulted in band gap tuning. Photoinduced charge generation and charge separation studies have been performed to understand the charge carrier dynamics in a methanofullerene : P3HT mixture. Efficient charge separation efficiency is observed in both the acceptors on mixing with P3HT, making them potential acceptor materials in organic solar cells. High photoconductivity calculated by terahertz time domain spectroscopy of these new fullerene derivatives can also be exploited in other organic electronic devices.

Publisher	Royal Society of Chemistry

Date	2016

Type	Article PeerReviewed

Format	application/pdf

Identifier	http://npl.csircentral.net/2391/1/Synthesis%20and%20ultrafast%20spectroscopic.pdf Naqvi, Samya and Gupta, Neha and Kumari, Neelam and Jewariya, Mukesh and Kumar, Pramod and Kumar, Rachana and Chand, Suresh (2016) Synthesis and ultrafast spectroscopic study of new [6,6]methanofullerenes. RSC Advances, 6 (30). 24889-24897. ISSN 2046-2069

Relation	http://npl.csircentral.net/2391/