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Herein, we demonstrate a strategy to improve the color purity of tetradentate Pt(II) complexes with the assistance of \u22c5\u22c5\u22c5H interaction by incorporating trifluoromethyl (\u2212CF\n                    <jats:sub>3<\/jats:sub>\n                    ) groups into the well\u2010known blue tetradentate Pt(II) phosphorescent complex. The results show that the different substitution positions of \u2212CF\n                    <jats:sub>3<\/jats:sub>\n                    have significantly varying effects on the FWHM values of the complexes; specifically, introducing \u2212CF\n                    <jats:sub>3<\/jats:sub>\n                    on the benzene ring of carbazole effectively reduces the FWHM, while introducing it on the benzene ring linked to the carbene unit has a minimal impact. When utilized in a mixed host system of SiCzCz\/SiTrzCz2, the OLEDs with these new complexes as emitters demonstrated maximum external quantum efficiencies (EQEs) of 27.1\u2009%, 33.8\u2009%, and 27.6\u2009% for\n                    <jats:bold>\n                      PtON\u2010CF\n                      <jats:sub>3<\/jats:sub>\n                      \u20101\n                    <\/jats:bold>\n                    ,\n                    <jats:bold>\n                      PtON\u2010CF\n                      <jats:sub>3<\/jats:sub>\n                      \u20102\n                    <\/jats:bold>\n                    , and\n                    <jats:bold>\n                      PtON\u20102CF\n                      <jats:sub>3<\/jats:sub>\n                    <\/jats:bold>\n                    , respectively, with excellent color purity (CIEy\u22480.14 for the\n                    <jats:bold>\n                      PtON\u2010CF\n                      <jats:sub>3<\/jats:sub>\n                      \u20102\n                    <\/jats:bold>\n                    based device). Notably, the device based on\n                    <jats:bold>\n                      PtON\u2010CF\n                      <jats:sub>3<\/jats:sub>\n                      \u20102\n                    <\/jats:bold>\n                    matched the stability of the benchmark\n                    <jats:bold>PtON\u2010TBBI<\/jats:bold>\n                    complex.This work offers an important guideline for the design of high efficient Pt(II) phosphorescent complexes with good blue color purity.\n                  <\/jats:p>","DOI":"10.1002\/anie.202418770","type":"journal-article","created":{"date-parts":[[2024,12,4]],"date-time":"2024-12-04T22:36:09Z","timestamp":1733351769000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":40,"title":["Improving the Blue Color Purity of Tetradentate Pt(II) Complexes with the Assistance of F\u22c5\u22c5\u22c5H Interaction towards High\u2010Performance Blue Phosphorescent OLEDs with EQE over 33\u2009%"],"prefix":"10.1002","volume":"64","author":[{"given":"Jianing","family":"Zhu","sequence":"first","affiliation":[{"name":"Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University  Shenzhen 518060 P. 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