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Novel photochromism of differently-linked bis-benzopyrans
Jarugu Narasimha Moorthy1, Parthasarathy Venkatakrishnan, Subhas Samanta
1Department of Chemistry, Indian Institute of Technology, Kanpur, 208016, India. moorthy@iitk.ac.in
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.
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