title: Two-photon dyes containing heterocyclic rings with enhanced photostability.
abstract: A series of donor-pi-donor derivatives containing phenyl, naphthyl, and anthryl groups as the pi-center and heterocyclic rings as the conjugation bridge have been synthesized and their one- and two-photon spectroscopic properties and photostability were determined. These compounds show bathochromic shifts in the absorption and emission spectra, larger two-photon cross-section, and enhanced photostability in comparison to their open-chain analogues. In addition, a convenient method for the qualitative photostability measurement is proposed.
authors.affiliation: Molecular Opto-Electronics Laboratory, Department of Chemistry, Korea University, Seoul. chobr@korea.ac.kr
authors.forename: Hwan Myung
authors.initials: HM
authors.lastname: Kim
authors.forename: Wen Jun
authors.initials: WJ
authors.lastname: Yang
authors.forename: Chang Ho
authors.initials: CH
authors.lastname: Kim
authors.forename: Won-Hwa
authors.initials: WH
authors.lastname: Park
authors.forename: Seung-Joon
authors.initials: SJ
authors.lastname: Jeon
authors.forename: Bong Rae
authors.initials: BR
authors.lastname: Cho
mesh_terms: D004396:Coloring Agents / Q000138:chemical synthesis* / Q000737:chemistry; D005453:Fluorescence; D006571:Heterocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D007202:Indicators and Reagents; D049449:Luminescence; D008853:Microscopy; D010777:Photochemistry; D017785:Photons; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet
chemical_list: D004396:Coloring Agents; D006571:Heterocyclic Compounds; D007202:Indicators and Reagents