title: Synthesis and characterization of platinum(II) complexes containing spiro system.
abstract: Platinum complexes [Pt(bpy)Cl2](bpy: 2,2'-bipyridine) and [Pt(PT)Cl2](PT: 1,10-phenantroline) were reacted with 5,5"-(9,9-dioctyl-9H-fluorene-2,7-diyl)bis(2,2'-bipyrine), bpy-spiro-bpy, to afford mono and diplatinium complexes: [(bpy)Pt(bpy-spiro-bpy)][PF6]2, [(bpy)Pt(bpy-spiro-bpy)Pt(bpy)])[PF6]4, and [(PT)Pt(bpy-spiro-bpy)])][PF6]2, which were characterized by NMR, UV/VIS, mass spectrum, and PL spectroscopy. They showed very high internal quantum yields (0.35-0.67) and emitted light in the blue region (473-520 nm). Herein, we describe the synthesis, characterization of the mono- and di-platinum complexes in detail.
authors.affiliation: Department of Chemical Engineering, Sunchon National University, Sunchon, Jeonnam 540-742, Korea.
authors.forename: Woong Kyu
authors.initials: WK
authors.lastname: Jo
authors.forename: Chee Hun
authors.initials: CH
authors.lastname: Kwak
authors.forename: Ji Hoon
authors.initials: JH
authors.lastname: Lee
authors.forename: Sang-Chul
authors.initials: SC
authors.lastname: Jung
authors.forename: Ho Geun
authors.initials: HG
authors.lastname: Ahn
authors.forename: Min Chul
authors.initials: MC
authors.lastname: Chung