A facile method for gold decoration of Te@CdTe nanorods in aqueous solution

Shao, Haibao; Wang, Chunlei; Wang, Zhuyuan; Li, Rongqing; Xu, Qingyu; Jiang, Yuan; Zhang, Jiayi; Fan, Bo; Cui, Yiping

doi:10.1016/j.jcis.2012.06.016

Cited by 1 publication

(1 citation statement)

References 54 publications

(40 reference statements)

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“…In the above reactions, the coordinative interaction between N 2 H 4 and cations (Zn 2+ and Cu + ) may greatly increase the diffusion speed of cations thus creates the driving force to convert the ZnSe NCs into Cu 1.8 Se. In fact, previous reports had revealed that N 2 H 4 could promote the growth or transformation of NCs in aqueous solution by binding to the metal ions [38][39][40]. In addition, an extremely excessive amount of N 2 H 4 in aqueous solution can also serve as an alkaline buffer to neutralize the acidic Cu or Zn stock solution.…”

Section: Resultsmentioning

confidence: 99%

Fast Doping of Cu into ZnSe NCs by Hydrazine Promoted Cation Exchange in Aqueous Solution at Room Temperature

Shao

Wang

et al. 2015

J Fluoresc

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Controllable doping is an effective way of tuning the properties of semiconductor nanocrystals (NCs). In this work, a simple strategy of fast doping Cu ions into ZnSe NCs under ambient conditions was proposed. The principle of doping is based on hydrazine (N2H4) promoted cation exchange reaction. By direct addition of Cu ion stock solution into the preformed ZnSe NCs, Cu doped ZnSe NCs can be obtained. Furthermore, the emission of doped NCs can be tuned by changing the amount of impurity ion addition. The cation exchange reaction is facilitated by three factors: 1) N2H4 addition, 2) fast impurity ions, and 3) partial stabilizer removal. The proposed cation exchange reaction in aqueous solution could be an alternate route for NC doping as well as synthesis of ionic NCs.

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Section: Resultsmentioning

confidence: 99%