Synthesis of NIR‐Emitting InAs‐Based Core/Shell Quantum Dots with the Use of Tripyrazolylarsane as Arsenic Precursor
作者： Remo Tietze , René Panzer , Thorben Starzynski , Chris Guhrenz , Florian Frenzel
关键词:
摘要: Tris(3,5-dimethylpyrazolyl)arsane (1) is introduced as a low-cost and convenient to handle arsenic precursor for the straight Forward synthesis of InAs Quantum dots (QDs). Transamination 1 with solvent oleylamine (OLAH) gives trioleylarsane (As(OLA)3) which in presence reducing agents diisobutylaluminum hydride (DIBAL-H) or trioleylphosphane (P(OLA)3) yields QDs via typical hot injection approach. The size obtained core are tuned by varying reaction time, amount applied agent, even more effectively changing Indium and/or zinc halide precursors, InX3, ZnX2 (Cl, Br, I). Passivation resulting particles protective ZnS ZnSe shell results improved photoluminescence core/shell covering spectral range between 600 1150 nm.
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