CdSe quantum dots capped with naturally occurring biobased oils

2015 ◽  
Vol 39 (9) ◽  
pp. 7251-7259 ◽  
Author(s):  
Joseph W. Kyobe ◽  
Egid B. Mubofu ◽  
Yahya M. M. Makame ◽  
Sixberth Mlowe ◽  
Neerish Revaprasadu
Keyword(s):  
Quantum Dots ◽  
Ricinoleic Acid ◽  
Castor Oil ◽  
Cdse Quantum Dots ◽  
Capping Agents ◽  
Naturally Occurring

Ultra-small CdSe quantum dots were thermally synthesized using castor oil and ricinoleic acid both as capping agents and dispersing solvents.

scholarly journals CdSe Quantum Dots Sensitized Mesoporous TiO2Solar Cells with CuSCN as Solid-State Electrolyte

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Guanbi Chen ◽  
Lei Wang ◽  
Yu Zou ◽  
Xia Sheng ◽  
Hongjuan Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solid State ◽  
Barrier Layer ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Cdse Quantum Dots ◽  
Solid State Electrolyte ◽  
Capping Agents ◽  
Organic Capping

Mesoporous TiO2is functionalized by 3-mercaptopropyl trimethyoxysilane (MPTMS) to anchor CdSe quantum dots (QDs). The resulting TiO2/CdSe is combined with solid-state electrolyte (CuSCN) to form solar cells. It is found that the efficiency of electron injection from QDs to TiO2can be improved owing to the substitution of the long chains of organic capping agents at the surface of QDs with MPTMS. The hydrolyzate of MPTMS forms an insulating barrier layer to reduce the recombination at the TiO2/CdSe interface, leading to the increase of open-circuit voltage (Voc).

Cadmium sulfide quantum dots stabilized by castor oil and ricinoleic acid

2016 ◽  
Vol 76 ◽  
pp. 95-102 ◽  
Author(s):  
Joseph William Kyobe ◽  
Egid Beatus Mubofu ◽  
Yahya M.M. Makame ◽  
Sixberth Mlowe ◽  
Neerish Revaprasadu
Keyword(s):  
Quantum Dots ◽  
Cadmium Sulfide ◽  
Ricinoleic Acid ◽  
Castor Oil

Evaluation of castorbean samples by economically - valuable traits

2018 ◽  
pp. 39-48
Keyword(s):  
Ricinoleic Acid ◽  
Castor Bean ◽  
Castor Oil ◽  
Oil Content ◽  
Climatic Conditions ◽  
Second Order ◽  
Yield Potential ◽  
Technological Parameters ◽  
Potential Yield ◽  
Ricinolic Acid

Castor oil (Ricinus communus L.) is an important commercial product. The climatic conditions of Ukraine determine the possibility of growing the castor as an annual crop. At the Institute of Oilseeds NAAS studied castor collection. The aim of the work was the selection of the most promising samples of castor oil, combining a large yield potential in a narrow range of vertical distribution for optimal technological parameters of mechanical harvesting with a high content of oil in seeds and ricinolic acid in oil. In the experience of 2015-2016, the manifestation of morphological features of 17 castor bean samples was studied. The height of plants, individual samples among themselves differed more than twice. Long-brush samples of ЕР118, К374, М203, К159 are distinguished on the basis of the length of the brush. The shortest brush was observed in sample K1008. The length of the productive brush in the studied samples is from 10.7 to 32.9 cm. Most castor bean samples under favorable conditions form brushes of the second and higher orders. According to this parameter, samples of Ep118 and selection No. 38 with four inflorescences of the second order are of the greatest interest. The largest brushes of the second order are similar in size to the brushes of the first order were observed in the samples: К1127, К810, К153. The adaptability of harvesting castor beads requires that the brushes of the first and second order coincide in height with each other, since the harvester can take a maximum of 60 cm. For the sum of the productive brushes of the first and second orders, the greatest potential yield will be provided by samples K159 and K1127. Among the studied collection stands out the small seed sample K159 and the large seed samples - PRL41 and K80. The average oil content in the seeds of the collection was from 52 to 61.4%. Sample38 had the highest oil content. The content of ricinolic acid in the collection was from 70.9 to 82.9%. Samples were isolated: К134, К1008, PRL41, К430 with the content of ricinoleic acid more than 80%. The results of the study of all parameters make it possible to isolate valuable technological samples. Sample K1064 with a high technological potential of productivity, with a seed oil content of 57.2%, has a not very high content of ricinoleic acid of 74.3%. Sample K1127 with an oil content of 58.6%, a mass of 1000 seeds of 265 g, a high potential of productive brushes has a wide variation in the arrangement of brushes. Sample K134 with a oil content of 57.1%, ricinoleic acid content of 80.7% has small second-order brushes and can be used as a single-cysts in a thicker seeding.

Ultrafast fs coherent excitonic dynamics in CdSe quantum dots assemblies addressed and probed by 2D electronic spectroscopy

2021 ◽  
Vol 154 (1) ◽  
pp. 014301
Author(s):  
Elisabetta Collini ◽  
Hugo Gattuso ◽  
R. D. Levine ◽  
F. Remacle
Keyword(s):  
Quantum Dots ◽  
Electronic Spectroscopy ◽  
Cdse Quantum Dots

scholarly journals One pot synthesis of bi-linker stabilised CdSe quantum dots

2010 ◽  
Vol 245 ◽  
pp. 012067 ◽  
Author(s):  
I Concina ◽  
M M Natile ◽  
A Braga ◽  
A Vomiero ◽  
V Morandi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cdse Quantum Dots ◽  
One Pot ◽  
One Pot Synthesis

Measuring temperature heterogeneities during solar-photothermal heating using quantum dot nanothermometry

The Analyst ◽  
2021 ◽  
Author(s):  
Stephanie K. Loeb ◽  
Haoran Wei ◽  
Jae-Hong Kim
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Fluorescence Emission ◽  
Emission Wavelength ◽  
Wavelength Shift ◽  
Cdse Quantum Dots ◽  
Photothermal Heating

The fluorescence emission wavelength shift of CdSe quantum dots due to heat-induced lattice dilatation is used to spatially resolve temperatures in solar photothermal systems.

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