Journal of Photochemistry and Photobiology A: Chemistry 355 (2018) 398–407 Contents lists available at ScienceDirect Journal of Photochemistry and Photobiology A: Chemistry journal home page : www.elsevier.com/locat e/jphotochem Probing the pH dependent assembly-disassembly of water-soluble organic capsules with coumarins and anthracene A. Mohan Raj, Sree Gayathri Talluri, Marie Dubus, Shipra Gupta, Barnali Mondal, V. Ramamurthy* Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA A R T I C L E I N F O A B S T R A C T Article history: Received 6 June 2017 Octaacid (OA) and octaamine (OAm) form water-soluble capsules in presence of guest molecules. Using Received in revised form 21 July 2017 the polarity dependent ﬂuorescence of coumarins (coumarin-1, coumarin-153 and coumarin-480) we Accepted 24 July 2017 have shown that the dynamic OA and OAm capsules can be reversibly disassembled and reassembled by Available online 25 July 2017 controlling the pH of the solution. Anthracene is a unique guest molecule that forms a 2:2 capsule with both OA and OAm and shows excimer emission when inside the capsule and monomer emission when in Dedicated to Professor Chen-Ho Tung, an water. Reversible pH dependent excimer-monomer emission of anthracene has revealed
Journal of Photochemistry and Photobiology A: Chemistry – Elsevier
Published: Mar 15, 2018
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