title: Theoretical and Experimental Studies of N,N-Dimethyl-N'-Picryl-4,4'-Stilbenediamine.
abstract: N,N-dimethyl-N'-picryl-4,4'-stilbenediamine (DMPSDA) was prepared, purified and crystallised in a form of black lustrous crystals, and its absorption and fluorescence spectra were recorded in cyclohexane, acetonitrile and dimethyl sulfoxide. Non-emissive intramolecular charge transfer state (ICT) was clearly observed in this molecule in all three solvents. Theoretical calculations demonstrating a betaine electronic structure of the trinitrophenyl group in the ground state of the molecule and a charge transfer nature of the long wavelength transition S0→ S1supported the experimental observations of the ICT formation in the molecule.
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
authors.forename: Vladislav
authors.initials: V
authors.lastname: Papper
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Institute of Chemistry, Humboldt University of Berlin, Berlin, Germany.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Kharlanov
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
authors.forename: Ayrine
authors.initials: A
authors.lastname: Sukharaharja
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore. wjsteele@ntu.edu.sg.
authors.forename: Terry W J
authors.initials: TWJ
authors.lastname: Steele
authors.affiliation: Department of Biotechnology Engineering, National Institute for Biotechnology in the Negev, Ilse Kats Institute for Nanoscale Science and Technology, Ben Gurion University of the Negev, Beer Sheva, Israel.
authors.forename: Robert S
authors.initials: RS
authors.lastname: Marks
keywords: Fluorescence; Intramolecular charge transfer
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2011 Apr 1;67(Pt 4):o948
references.pmid: 21754214
references.citation: J Biochem Biophys Methods. 1996 Nov 15;33(2):117-33
references.pmid: 8951532