Báo cáo hóa học: " One-Pot Synthesis of Biocompatible CdSe/CdS Quantum Dots and Their Applications as Fluorescent Biological Labels" doc

... empera- ture, and 19 mg of Se powder was added. Finally, the mixture was heated to 240°C and kept for a certain period of time such as 1, 5, 60, and 120 min. Synthesis of CdSe/CdS QDs As sulfur source, ... μL of the as- synthesized QDs containing differen t concentrations of nanoparticles. After 24-h labeling and washing, 20 μL of a solution of MTT (5 mg/mL in P...

Ngày tải lên: 21/06/2014, 08:20

... measures have been constructed that yield  Δ and  δ. In the first part of this paper, we construct two Borel regular measures ᏹ ∗s and ᏹ s ∗ . The properties of these two new measures, many of ... Borel probability meausre μ on R n . Haase [8] studies the dimension of product measures in terms of dim and Dim, here we discuss the case in terms of  δ and Dim. In this secti...

Ngày tải lên: 22/06/2014, 22:20

... was the electrical conductivity, R was the tested value of resisti vity, S was the area of the effective measuring electrode, and h was the thickness of the samples. It is found that the s of ... 0.337, and a PCE o f 1.04%. With doping 1and2 mMAlconcentrations,theJ SC of devices increases to 10.26 and 11.08 mA cm -2 ,andthePCE increases to 1.26% and 1.44%, respectively. Wit...

Ngày tải lên: 20/06/2014, 22:20

... were charged and discharged at 1 C for the first 10 cycles, and then, the rate was increased in stages to 20 C. At a rate of 20 C, the capacity of the nano-Li 4 Ti 5 O 12 powders was still high: ... discharge capacity was 154 mAh g −1 over a voltage window of 1.0 to 2.5 V at a current rate of 1 C (175 mAh g −1 ; here, C is defined as three Li ions per hour and per formul...

Ngày tải lên: 20/06/2014, 23:20

... al. [38] delivered a specific capacitance of 944 F/g at a scan rate of 1 mV/s based on the mass of MnO 2 alone or 141 F/g based on the total mass of the composite. From works reported in the ... displacement E2g mode, disorder-induced features of the CNTs and the overtone of D band [36]. As shown in Figure 2b, three Raman bands located at 501, 575, and 645 cm −1 for the...

Ngày tải lên: 20/06/2014, 23:20

... quantity of dispersant is needed and the batch of product can be enlarged easily. Figure 1 shows the XRD profile of the as- prepared nanoparticles, and the sample has perfectly crystallized perovskite ... modeling of aqueous and hydrothermal synthesis of barium titanate (BaTiO 3 ). Chem Mater 2005, 17:5346-5356. doi:10.1186/1556-276X-6-466 Cite this article as: Qi et al.:...

Ngày tải lên: 21/06/2014, 01:20

... amount of PVP was increased to 0.310 g (the molar ratio of repeating units of PVP t o Bi 3+ is about 6), bismuth nanospheres and nanowires were formed, as shown in Figure 4a. The diameters of obtained ... nanoparticles and nanotubes were formed w hen DMF w as used as a solvent instead of EG. The possible formation mechanism of the bis- muth nanotubes was also discussed...

Ngày tải lên: 21/06/2014, 06:20

... production of CNTs. Experimental Synthesis of ACNTs bundles was carried out using spray pyrolysis-assisted CVD method. Neem oil was used as carbon source and fe rrocene [Fe (C 5 H 5 ) 2 ] as a source of Fe ... authors are grateful to Prof. C. N. R. Rao, Prof. A. K. Raychaudhary, Prof. A. K. Sood, Prof. P. M. Ajayan, and Prof. D. P. Singh (Vice-Chancellor B.H.U) for their enc...

Ngày tải lên: 21/06/2014, 06:20

... mmol of In(OAc) 3 was added to a mixture of 0.12 mmol of MA and 4 ml of ODE in a 50-ml three-necked flask. The solution was then heated to 110°C for 1.5 h in vacuum. Injection solution was prepared ... precipitated and washed with methanol and 1-butanol and re- dispersed in hexane. Synthesis of InP/ZnS For in situ fabrication of InP/ZnS core-shell NQDs, the tempera...

Ngày tải lên: 21/06/2014, 17:20

... image of a bundle of CdO nanowires; d HRTEM image of nanowires that make up the bundle; and e EDX spectrum of the as- prepared nanostructures Fig. 3 a FESEM, b TEM images and c SAED pattern of the ... in Fig. 2c) of high aspect ratios as demonstrated elsewhere [27–30]. As shown in Fig. 4, the nanostrands could serve as building blocks for the formation of ordered nano...

Ngày tải lên: 21/06/2014, 18:20