دورية أكاديمية
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Near-unity NIR phosphorescent quantum yield from a room-temperature solvated metal nanocluster.

التفاصيل البيبلوغرافية
العنوان: Near-unity NIR phosphorescent quantum yield from a room-temperature solvated metal nanocluster.
المؤلفون: Shi WQ; Department of Chemistry, Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Tsinghua University, Beijing 100084, P. R. China., Zeng L; Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China., He RL; Department of Chemistry, Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Tsinghua University, Beijing 100084, P. R. China., Han XS; Department of Chemistry, Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Tsinghua University, Beijing 100084, P. R. China., Guan ZJ; Department of Chemistry, Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Tsinghua University, Beijing 100084, P. R. China.; Department of Chemistry, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China., Zhou M; Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China., Wang QM; Department of Chemistry, Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Tsinghua University, Beijing 100084, P. R. China.
المصدر: Science (New York, N.Y.) [Science] 2024 Jan 19; Vol. 383 (6680), pp. 326-330. Date of Electronic Publication: 2024 Jan 18.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: American Association for the Advancement of Science Country of Publication: United States NLM ID: 0404511 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1095-9203 (Electronic) Linking ISSN: 00368075 NLM ISO Abbreviation: Science Subsets: PubMed not MEDLINE; MEDLINE
أسماء مطبوعة: Publication: : Washington, DC : American Association for the Advancement of Science
Original Publication: New York, N.Y. : [s.n.] 1880-
مستخلص: Metal nanoclusters have emerged as promising near-infrared (NIR)-emissive materials, but their room-temperature photoluminescence quantum yield (PLQY), especially in solution, is often low (<10%). We studied the photophysics of Au 22 ( t BuPhC≡C) 18 (Au 22 ) and its alloy counterpart Au 16 Cu 6 ( t BuPhC≡C) 18 (Au 16 Cu 6 ) (where t Bu is tert -butyl and Ph is phenyl) and found that copper (Cu) doping suppressed the nonradiative decay (~60-fold less) and promoted intersystem crossing rate (~300-fold higher). The Au 16 Cu 6 nanocluster exhibited >99% PLQY in deaerated solution at room temperature with an emission maximum at 720 nanometers tailing to 950 nanometers and 61% PLQY in the oxygen-saturated solution. The approach to achieve near-unity PLQY could enable the development of highly emissive metal cluster materials.
تواريخ الأحداث: Date Created: 20240118 Latest Revision: 20240118
رمز التحديث: 20240119
DOI: 10.1126/science.adk6628
PMID: 38236955
قاعدة البيانات: MEDLINE
الوصف
تدمد:1095-9203
DOI:10.1126/science.adk6628