PtII complexes with 6-(5-trifluoromethyl-pyrazol-3-yl)-2, 2′-bipyridine terdentate chelating ligands : Synthesis, characterization, and luminescent properties

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Jing-Lin Chen
  • Sheng-Yuan Chang
  • Kellen Chen
  • Yi-Ming Cheng
  • Chun-Wei Lin
  • Gene-Hsiang Lee
  • Pi-Tai Chou
  • Chen-Hao Wu
  • Ping-I. Shih
  • Ching-Fong Shu

Detail(s)

Original languageEnglish
Pages (from-to)2112-2123
Journal / PublicationChemistry - An Asian Journal
Volume3
Issue number12
Online published21 Nov 2008
Publication statusPublished - 1 Dec 2008
Externally publishedYes

Abstract

A series of PtII complexes Pt(fpbpy)Cl (1), Pt(fpbpy)(OAc) (2), Pt(fpbpy)(NHCOMe) (3), Pt(fpbpy)(NHCOEt) (4), and [Pt(fpbpy)(NCMe)](BF 4) (5) with deprotonated 6-(5-trifluoromethyl-pyrazol-3-yl)-2, 2′-bipyridine terdentate ligand are prepared, among which 1 is converted to complexes 2-5 by a simple ligand substitution. Alternatively, acetamide complex 3 is prepared by hydrolysis of acetonitrile complex 5, while the back conversion from 3 to 1 is regulated by the addition of HCl solution, showing the reaction sequence 1→5→3→1. Multilayer OLED devices are successfully fabricated by using triphenyl-(4-(9-phenyl-9H-fluoren-9-yl)phenyl) silane (TPSi-F) as host material and with doping concentrations of 1 varying from 7 to 100%. The electroluminescence showed a substantial red-shifting versus the normal photoluminescence detected in solution. Moreover, at a doping concentration of 28%, the device showed a saturated red luminescence with a maximum external quantum yield of 8.5% at 20 mA cm-2 and a peak luminescence of 47 543 cd m-2 at 18.5 V.  

Research Area(s)

  • Charge transfer, Chelates, N ligands, OLEDs, Platinum

Citation Format(s)

PtII complexes with 6-(5-trifluoromethyl-pyrazol-3-yl)-2, 2′-bipyridine terdentate chelating ligands : Synthesis, characterization, and luminescent properties. / Chen, Jing-Lin; Chang, Sheng-Yuan; Chi, Yun; Chen, Kellen; Cheng, Yi-Ming; Lin, Chun-Wei; Lee, Gene-Hsiang; Chou, Pi-Tai; Wu, Chen-Hao; Shih, Ping-I.; Shu, Ching-Fong.

In: Chemistry - An Asian Journal, Vol. 3, No. 12, 01.12.2008, p. 2112-2123.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review