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Stereoselective Formation of Facial Tris-Cyclometalated Pt IV Complexes: Dual Phosphorescence from Heteroleptic Derivatives.

التفاصيل البيبلوغرافية
العنوان: Stereoselective Formation of Facial Tris-Cyclometalated Pt IV Complexes: Dual Phosphorescence from Heteroleptic Derivatives.
المؤلفون: López-López JC; Departamento de Química Inorgánica, Universidad de Murcia, Campus de Espinardo, 19, 30100, Murcia, Spain., Bautista D; ACTI, Universidad de Murcia, Campus de Espinardo, 21, 30100, Murcia, Spain., González-Herrero P; Departamento de Química Inorgánica, Universidad de Murcia, Campus de Espinardo, 19, 30100, Murcia, Spain.
المصدر: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2020 Sep 01; Vol. 26 (49), pp. 11307-11315. Date of Electronic Publication: 2020 Jul 28.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Wiley-VCH Country of Publication: Germany NLM ID: 9513783 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1521-3765 (Electronic) Linking ISSN: 09476539 NLM ISO Abbreviation: Chemistry Subsets: PubMed not MEDLINE; MEDLINE
أسماء مطبوعة: Original Publication: Weinheim, Germany : Wiley-VCH
مستخلص: A stereoselective synthetic route to homo- and heteroleptic facial tris-cyclometalated Pt IV complexes is reported, involving the oxidative addition of 2-(2-pyridyl)- or 2-(1-isoquinolinyl)benzenediazonium salts to cis-[Pt(C^N) 2 ] precursors, with C^N=cyclometalated 2-(p-tolyl)pyridine (tpy), 2-phenylquinoline (pq), 2-(2-thienyl)pyridine or 1-phenylisoquinoline (piq), to produce labile diazenide intermediates that undergo photochemical or thermal elimination of N 2 . The method allows the preparation of derivatives bearing cyclometalated ligands of low π-π* transition energies. The new complexes exhibit phosphorescence in fluid solution at room temperature arising from triplet ligand-centered ( 3 LC) excited states, which, in the cases of the heteroleptic derivatives, involve the ligand with the lowest π-π* gap. The heteroleptic piq derivatives exhibit fluorescence and dual phosphorescence from different ligand-centered excited states in rigid media, demonstrating the potential of cyclometalated Pt IV complexes as multi-emissive materials.
(© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)
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معلومات مُعتمدة: PGC2018-100719-BI00 Ministerio de Ciencia, Innovación y Universidades; CTQ2015-69568-P Secretaría de Estado de Investigación, Desarrollo e Innovación; 19890/GERM/15 Fundación Séneca
فهرسة مساهمة: Keywords: cyclometalating ligands; electrochemistry; luminescence; photophysics; platinum
تواريخ الأحداث: Date Created: 20200401 Latest Revision: 20201207
رمز التحديث: 20231215
DOI: 10.1002/chem.202001164
PMID: 32227518
قاعدة البيانات: MEDLINE
الوصف
تدمد:1521-3765
DOI:10.1002/chem.202001164