Acenaphtho[1, 2-k]fluoranthene-Fused Diimide Derivatives: An Investigation of the Relationship Between Molecular Structure and Device Performance

2017 ◽  
Vol 6 (9) ◽  
pp. 1231-1234 ◽  
Author(s):  
Lin Ding ◽  
Chi-Yuan Yang ◽  
Yu-Qing Zheng ◽  
Jie-Yu Wang ◽  
Jian Pei ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Device Performance ◽  
The Relationship

The Effect of Donor Molecular Structure on Power Conversion Efficiency of Small-Molecule-Based Organic Solar Cells

2019 ◽  
Vol 16 (3) ◽  
pp. 236-243 ◽  
Author(s):  
Hui Zhang ◽  
Yibing Ma ◽  
Youyi Sun ◽  
Jialei Liu ◽  
Yaqing Liu ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Molecular Design ◽  
Power Conversion ◽  
The Relationship

In this review, small-molecule donors for application in organic solar cells reported in the last three years are highlighted. Especially, the effect of donor molecular structure on power conversion efficiency of organic solar cells is reported in detail. Furthermore, the mechanism is proposed and discussed for explaining the relationship between structure and power conversion efficiency. These results and discussions draw some rules for rational donor molecular design, which is very important for further improving the power conversion efficiency of organic solar cells based on the small-molecule donor.

scholarly journals Forecasting the properties of linear block-copoliurethanes based on oligoesters of regular structure

2021 ◽  
pp. 4-10
Author(s):  
V.N. Anisimov ◽  
◽  
V.V. Anisimov
Keyword(s):  
Molecular Structure ◽  
Regular Structure ◽  
High Strength ◽  
Operating Conditions ◽  
Properties Of Materials ◽  
Reasonable Choice ◽  
The Relationship ◽  
Tribotechnical Characteristics ◽  
Quality Indexes ◽  
Linear Block

We showed that the development of recommendations for a reasonable choice of linear block copolyurethanes that would be optimal for given operating conditions is still intuitive and does not consider the features of the molecular structure and the nature of initial components. We suggested a new scientifically grounded approach to the creation of linear block-copolyurethanes with increased wear resistance in relation to strength, deformation, thermophysical and tribotechnical characteristics. To simplify analysis of the properties of the studied materials, a mathematical model was developed, which describes the relationship between all considered properties of materials and their structure. We proposed to assess the relationship between structure and properties of the investigated materials by using quality indexes. Maximum values of quality indexes, depending on the operating conditions, correspond to different contents of hard blocks (Pc), and, consequently, to different molecular structure of the studied polyurethanes. Thus, it is reasonable to use block-copolyurethanes based on OBGA500 with a maximum content of hard blocks (Рс>60%) for operating conditions where it is necessary to provide high strength characteristics. Polyurethanes synthesized with the formation of clusters of hard blocks in the range of 45–55% are recommended for the use as wear-resistant materials.

scholarly journals Studies on the antibacterial properties of the bile acids and some compounds derived from cholanic acid

1947 ◽  
Vol 134 (877) ◽  
pp. 523-537 ◽  
Keyword(s):  
Molecular Structure ◽  
Staphylococcus Aureus ◽  
Surface Tension ◽  
Bile Acids ◽  
Antibacterial Properties ◽  
Simple Relationship ◽  
The Relationship ◽  
Positive Complex ◽  
Cholanic Acid ◽  
Limiting Dilution

In this work the bile acids and certain of their derivatives have been studied with regard to their bacteriostatic power and relative activities in removing the Gram-positive complex from yeast. No correlation between these properties was obtained. A simple relationship was apparent, however, between the bacteriostatic activities of the compounds and their ability to depress the surface tension of the metabolism medium. The limiting dilution at which the 'active' bile acids were bacteriostatic for Staphylococcus aureus corresponded to a depression of the surface tension of the medium by approximately 4∙5 dynes. The relationship between bacteriostatic power and surface activity was only valid for this particular series of compounds of closely related molecular structure.

The relationship between the expression pattern of starch biosynthesis enzymes and molecular structure of high amylose maize starch

2020 ◽  
Vol 247 ◽  
pp. 116681 ◽  
Author(s):  
Yuyue Zhong ◽  
Linsan Liu ◽  
Jianzhou Qu ◽  
Silu Li ◽  
Andreas Blennow ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Expression Pattern ◽  
Starch Biosynthesis ◽  
Maize Starch ◽  
High Amylose ◽  
The Relationship
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