Regioselective Fluorination of Thiophene-Based Heterocycles for Modulation of Multiple Physical Properties in Organic
Seung Un Ryu1,2, Jaehyoung Koo3, Taehyun Kim1
1Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongsangbuk-do 37673, Republic of Korea.
Abstract:
Thiophene-based derivatives are cost-effective and promising electron-donating units in high-performance π-conjugated materials for organic electronics. Fluorination is crucial for modulating their electronic and structural properties; however, few studies have been conducted due to synthetic challenges. We developed a fluorination method that enables regioselective fluorination of thiophene-based heterocycles. Our comparative study revealed that the position and number of fluorine atoms fine-tune molecular orbital energies and interactions, providing valuable insights for organic semiconductor applications.
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