Kwak Cheol Hwan, Park Joong Pill, Lee Sung Sil, Muruganantham Rethinasabapathy, Kwon Soonjo, Roh Changhyun, Kim Sang-Wook, Huh Yun Suk
Department of Biological Engineering, Inha University, Nam-gu, Incheon 22212, Republic of Korea.
Department of Molecular Science and Technology, Ajou University, Yeongtong-gu, Suwon 16499, Republic of Korea.
J Nanosci Nanotechnol. 2018 Feb 1;18(2):1339-1342. doi: 10.1166/jnn.2018.14918.
CdSe quantum dots (QDs) with a uniform size distribution were synthesized using a droplet-based microfluidic reactor. The droplet-based microfluidic reactor enabled continuous production of CdSe QDs at a temperature of less than 250 °C in an extremely shorter reaction time (less than 30 s) when compared with the batch reactor. The photoluminescence (PL) and ultraviolet (UV) absorption spectra of the CdSe QDs were recorded at different reaction times and the size and optical properties of the QDs were discussed. The structure morphology and elemental composition of the CdSe QDs were determined using a transmission electron microscopy (TEM) and electrondispersive spectroscopy (EDS). The size of CdSe QDs prepared using the microfluidic reactor was estimated to be from 1.6 to 2.6 nm with an average size of 2.2 nm. This droplet-based microfluidic reactor has the potential to be automated system continuous synthesis of CdSe QDs.
使用基于微滴的微流控反应器合成了尺寸分布均匀的CdSe量子点（QDs）。与间歇式反应器相比，基于微滴的微流控反应器能够在低于250°C的温度下，在极短的反应时间（小于30秒）内连续生产CdSe量子点。在不同反应时间记录了CdSe量子点的光致发光（PL）和紫外（UV）吸收光谱，并讨论了量子点的尺寸和光学性质。使用透射电子显微镜（TEM）和电子能谱（EDS）确定了CdSe量子点的结构形态和元素组成。使用微流控反应器制备的CdSe量子点尺寸估计为1.6至2.6纳米，平均尺寸为2.2纳米。这种基于微滴的微流控反应器有潜力成为自动化系统连续合成CdSe量子点。
