title: Absorption and Fluorescent Studies of 3-Hydroxychromones.
abstract: The synthesis and spectral studies of variously substituted 3-hydroxychromones have been carried out. A key relationship between the structural motif of synthesized 3-hydroxychromones (3-HCs) and their fluorescent properties was found. The chromones substituted with electron-donating group at 4'-position expressed the red shift of the N(*) and T(*) band and also exhibited the increased fluorescent intensity ratio while the chromones with electron-withdrawing group showed the blue shift of the N(*) and T(*) band. Therefore, these 3-HCs may behave as the possible fluorescent probes.
authors.affiliation: Department of Chemistry, Kurukshetra University, Kurukshetra, 136119, Haryana, India.
authors.forename: Radhika
authors.initials: R
authors.lastname: Khanna
authors.affiliation: Department of Chemistry, Kurukshetra University, Kurukshetra, 136119, Haryana, India.
authors.forename: Ramesh
authors.initials: R
authors.lastname: Kumar
authors.affiliation: Department of Chemistry, Kurukshetra University, Kurukshetra, 136119, Haryana, India.
authors.forename: Aarti
authors.initials: A
authors.lastname: Dalal
authors.affiliation: Department of Chemistry, Kurukshetra University, Kurukshetra, 136119, Haryana, India. rckamboj@hotmail.com.
authors.forename: Ramesh C
authors.initials: RC
authors.lastname: Kamboj
keywords: 3-Hydroxychromones; Absorption; ESIPT; Fluorescence