title: Isobutrin from butea monosperma (flame of the forest): a promising new natural sensitizer belonging to chalcone class.
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 °C.
authors: Physical and Materials Chemistry Division, National Chemical Laboratory (Council of Scientific and Industrial Research), Pune 411008, India. shruti.agarkar28@gmail.com
authors: Shruti A
authors: SA
authors: Agarkar
authors: Roshan R
authors: RR
authors: Kulkarni
authors: Vivek V
authors: VV
authors: Dhas
authors: Ashish A
authors: AA
authors: Chinchansure
authors: Partha
authors: P
authors: Hazra
authors: Swati P
authors: SP
authors: Joshi
authors: Satishchandra B
authors: SB
authors: Ogale