{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T05:46:03Z","timestamp":1791092763002,"version":"4.1.0"},"reference-count":61,"publisher":"Wiley","issue":"47","license":[{"start":{"date-parts":[[2010,10,19]],"date-time":"2010-10-19T00:00:00Z","timestamp":1287446400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2010,12,17]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    A series of platinum(II) complexes bearing tridentate cyclometalated C^N^N (C^N^N=6\u2010phenyl\u20102,2'\u2010bipyridine and \u03c0\u2010extended R\u2010C^N^N=3\u2010[6'\u2010(naphthalen\u20102''\u2010yl)pyridin\u20102'\u2010yl]isoquinoline) ligands with fluorene units have been synthesised and their photophysical properties have been studied. The fluorene units are incorporated into the cyclometalated ligands by a Suzuki coupling reaction. An increase in the \u03c0\u2010conjugation of the cyclometalated ligands confers favourable photophysical properties compared to the 6\u2010phenyl\u20102,2'\u2010bipyridine analogues. The fluorene\u2010based platinum(II) complexes display vibronic\u2010structured emission bands with\n                    <jats:italic>\u03bb<\/jats:italic>\n                    <jats:sub>max<\/jats:sub>\n                    =558\u2013601\u2005nm, and high emission quantum yields up to 0.76 in degassed dichloromethane. Their emissions are tentatively assigned to excited states with mixed\n                    <jats:sup>3<\/jats:sup>\n                    IL\/\n                    <jats:sup>3<\/jats:sup>\n                    MLCT parentage (IL=intraligand, MLCT=metal\u2010to\u2010ligand charge transfer). The crystal structures of these platinum(II) complexes reveal extensive Pt\n                    <jats:sup>II<\/jats:sup>\n                    \u22c5\u22c5\u22c5\u03c0 and\/or \u03c0\u2013\u03c0 interactions. The fluorene\u2010based platinum(II) complexes are soluble in organic solvents, have high thermal stability with decomposition temperature &gt;350\u2009\u00b0C, and can be thermally vacuum\u2010sublimed or solution\u2010processed as phosphorescent dopants for the fabrication of organic light\u2010emitting diodes (OLEDs). A monochromic OLED with\n                    <jats:bold>3\u2009d<\/jats:bold>\n                    as dopant (2\u2005wt\u2009%) fabricated by vacuum deposition gave a current efficiency of 14.7\u2005cd\u2009A\n                    <jats:sup>\u22121<\/jats:sup>\n                    and maximum brightness of 27000\u2005cd\u2009m\n                    <jats:sup>\u22122<\/jats:sup>\n                    . A high current efficiency (9.2\u2005cd\u2009A\n                    <jats:sup>\u22121<\/jats:sup>\n                    ) has been achieved in a solution\u2010processed OLED using complex\n                    <jats:bold>3\u2009f<\/jats:bold>\n                    (5\u2005wt\u2009%) doped in a PVK (poly(9\u2010vinylcarbazole)) host.\n                  <\/jats:p>","DOI":"10.1002\/chem.201001570","type":"journal-article","created":{"date-parts":[[2010,10,19]],"date-time":"2010-10-19T05:42:23Z","timestamp":1287466943000},"page":"14131-14141","source":"Crossref","is-referenced-by-count":59,"title":["Synthesis, Photophysical and Electrophosphorescent Properties of Fluorene\u2010Based Platinum(II) Complexes"],"prefix":"10.1002","volume":"16","author":[{"given":"Mai\u2010Yan","family":"Yuen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven C. 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