Phase Separation of Binary Blends in Polymer Nanoparticles

Small ◽  
2007 ◽  
Vol 3 (6) ◽  
pp. 1041-1048 ◽  
Author(s):  
Thomas Kietzke ◽  
Dieter Neher ◽  
Michael Kumke ◽  
Omayma Ghazy ◽  
Ulrich Ziener ◽  
...  
Keyword(s):  
Phase Separation ◽  
Polymer Nanoparticles ◽  
Binary Blends

scholarly journals Controlling the Solidification of Organic Photovoltaic Blends with Nucleating Agents

2014 ◽  
Vol 2 (1) ◽  
Author(s):  
Jennifer A. Nekuda Malik ◽  
Neil D. Treat ◽  
Maged Abdelsamie ◽  
Liyang Yu ◽  
Ruipeng Li ◽  
...  
Keyword(s):  
Phase Separation ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Nucleating Agent ◽  
Organic Photovoltaic ◽  
Degree Of Crystallinity ◽  
Nucleating Agents ◽  
Binary Blends ◽  
Donor And Acceptor ◽  
Improve Device

AbstractBlending fullerenes with a donor polymer for the fabrication of organic solar cells often leads to at least partial vitrification of one, if not both, components. For prototypical poly(3-hexylthiophene):fullerene blend, we show that the addition of a commercial nucleating agent, di(3,4-dimethyl benzylidene)sorbitol, to such binary blends accelerates the crystallization of the donor, resulting in an increase in its degree of crystallinity in as-cast structures. This allows manipulation of the extent of intermixing/ phase separation of the donor and acceptor directly from solution, offering a tool to improve device characteristics such as power conversion efficiency.

Photopolymerization-induced phase separation in binary blends of photocurable/linear polymers

Polymer ◽  
2002 ◽  
Vol 43 (9) ◽  
pp. 2845-2859 ◽  
Author(s):  
Kazutaka Murata ◽  
Jain Sachin ◽  
Hideki Etori ◽  
Takanori Anazawa
Keyword(s):  
Phase Separation ◽  
Linear Polymers ◽  
Binary Blends

Spontaneous formation of polymer nanoparticles with inner micro-phase separation structures

Soft Matter ◽  
2008 ◽  
Vol 4 (6) ◽  
pp. 1302 ◽  
Author(s):  
Takeshi Higuchi ◽  
Atsunori Tajima ◽  
Hiroshi Yabu ◽  
Masatsugu Shimomura
Keyword(s):  
Phase Separation ◽  
Polymer Nanoparticles ◽  
Spontaneous Formation

Bulk standards for low-temperature biological x-ray microanalysis

1984 ◽  
Vol 42 ◽  
pp. 282-283
Author(s):  
P. Echlin ◽  
M. McKoon ◽  
E.S. Taylor ◽  
C.E. Thomas ◽  
K.L. Maloney ◽  
...  
Keyword(s):  
Phase Separation ◽  
Low Temperature ◽  
Analytical Method ◽  
Salt Solutions ◽  
Absolute Concentration ◽  
Cooling Process ◽  
X Ray ◽  
The Absolute ◽  
Analytical Procedures ◽  
Electrical Conductors

Although sections of frozen salt solutions have been used as standards for x-ray microanalysis, such solutions are less useful when analysed in the bulk form. They are poor thermal and electrical conductors and severe phase separation occurs during the cooling process. Following a suggestion by Whitecross et al we have made up a series of salt solutions containing a small amount of graphite to improve the sample conductivity. In addition, we have incorporated a polymer to ensure the formation of microcrystalline ice and a consequent homogenity of salt dispersion within the frozen matrix. The mixtures have been used to standardize the analytical procedures applied to frozen hydrated bulk specimens based on the peak/background analytical method and to measure the absolute concentration of elements in developing roots.

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