Isobutrin from butea monosperma (flame of the forest): a promising new natural sensitizer belonging to chalcone class

TitleIsobutrin from butea monosperma (flame of the forest): a promising new natural sensitizer belonging to chalcone class
Publication TypeJournal Article
Year of Publication2011
AuthorsAgarkar, SA, Kulkarni, RR, Dhas, VV, Chinchansure, AA, Hazra, P, Joshi, SP, Ogale, SB
JournalACS Applied Materials & Interfaces
Volume3
Issue7
Pagination2440-2444
Date PublishedJUL
Type of ArticleArticle
ISSN1944-8244
KeywordsButea monosperma, chalcone, dye-sensitized solar cell, isobutrin, sensitizer, TiO(2)
Abstract

In this work, ``isobutrin'', an ecofriendly sensitizer that is extracted from Butea monosperma (commonly known as ``Flame of the Forest'') flowers, is introduced. It is a bright yellow pigment belonging to the chalcone class and is examined as a sensitizer for optoelectronic applications. It is observed that chelation of this dye with Ti ions results into a strong dye-TiO(2) charge transfer (DTCT) band in the visible region. This Ti-Isobutrin chelate is stable, irreversible and its formation is studied using Benesi-Hildebrand plot. The locations of HOMO-LUMO states of the Ti-isobutrin chelate and the corresponding band alignment with TiO(2) are obtained. Also, a thermal stability test revealed that isobutrin is stable above 100 degrees C.

DOI10.1021/am200341y
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

4.20

Divison category: 
Organic Chemistry
Physical and Materials Chemistry