Presentation Title

Long Range Charge Transfer With Ordered Dipoles

Faculty Mentor

Valentine Vullev

Start Date

18-11-2017 10:00 AM

End Date

18-11-2017 11:00 AM

Location

BSC-Ursa Minor 82

Session

Poster 1

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

The reduction of energy loss is the ideal goal for meeting US energy consumption needs without deteriorating the global climate. With 30% of the light energy harvested in single junction solar cells, improvements in efficiency can be found through controlling crystallinity. The specific crystalline structure dictates the coulombic interactions that are the ordered dipoles i.e. electrets. If charge transfer is controlled at a molecular scale, then energy efficiency will improve and the amount of light energy being lost as heat will decrease. Controlling charge transfer by encouraging charge separation and mitigating charge recombination allows for a higher percentage of light energy to be converted into electric energy. Rectifying these charges through bioinspired molecular electrets based on anthranilamide templates allow for long range hole transfer. Conducting nucleophilic aromatic substitution on 4,5-difluoro-2-nitrobenzoic acid provides the necessary grounds for various anthranilamide structures. We are focusing on Fhx, which contains a hexylamine at the fifth position and a fluorine at the fourth position. We manipulated the compound by synthesizing from the C-terminus to N-terminus so that the long range charge transfer can occur from the N-terminus to the C-terminus.We will characterize this anthranilamide through absorbance, fluorescence, and lifetime measurements of Fhx.

Summary of research results to be presented

We were able to purify Fhx to a very clean state through various filtration methods i.e. liquid liquid extraction and recrystallization. Then we verified such through Nuclear Magnetic Resonance proton spectroscopy. We found that testing our products with chloroform provided better results.

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Nov 18th, 10:00 AM Nov 18th, 11:00 AM

Long Range Charge Transfer With Ordered Dipoles

BSC-Ursa Minor 82

The reduction of energy loss is the ideal goal for meeting US energy consumption needs without deteriorating the global climate. With 30% of the light energy harvested in single junction solar cells, improvements in efficiency can be found through controlling crystallinity. The specific crystalline structure dictates the coulombic interactions that are the ordered dipoles i.e. electrets. If charge transfer is controlled at a molecular scale, then energy efficiency will improve and the amount of light energy being lost as heat will decrease. Controlling charge transfer by encouraging charge separation and mitigating charge recombination allows for a higher percentage of light energy to be converted into electric energy. Rectifying these charges through bioinspired molecular electrets based on anthranilamide templates allow for long range hole transfer. Conducting nucleophilic aromatic substitution on 4,5-difluoro-2-nitrobenzoic acid provides the necessary grounds for various anthranilamide structures. We are focusing on Fhx, which contains a hexylamine at the fifth position and a fluorine at the fourth position. We manipulated the compound by synthesizing from the C-terminus to N-terminus so that the long range charge transfer can occur from the N-terminus to the C-terminus.We will characterize this anthranilamide through absorbance, fluorescence, and lifetime measurements of Fhx.