title: Novel photochromism of differently-linked bis-benzopyrans.
abstract: The unique photochromic bis-chromene 5 incorporates the structural attributes of both 3 and 4 . UV-vis irradiation of 5 leads to a dark brown colour, which is formed by mixing the purple and red colours observed for the photolysates of 3 and 4 , respectively.
authors.affiliation: Department of Chemistry, Indian Institute of Technology, Kanpur, 208016, India. moorthy@iitk.ac.in
authors.forename: Jarugu Narasimha
authors.initials: JN
authors.lastname: Moorthy
authors.forename: Parthasarathy
authors.initials: P
authors.lastname: Venkatakrishnan
authors.forename: Subhas
authors.initials: S
authors.lastname: Samanta