Chemistry

Unraveling two distinct polymorph transition mechanisms in one n-type single crystal for dynamic electronics

D. W. Davies, B. Seo, et al.

Discover the intriguing thermally activated phase transitions in 2-dimensional quinoidal terthiophene (2DQTT-o-B), a cutting-edge n-type organic semiconductor. This research unveils how alkyl chain engineering plays a crucial role in controlling polymorphic behaviors, paving the way for innovative electronic applications. Conducted by a team of experts, including Daniel William Davies and Ying Diao.

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Abstract

Crystals of 2-dimensional quinoidal terthiophene (2DQTT-o-B), a high-performance n-type organic semiconductor, demonstrate two distinct thermally activated phase transitions. Reorientation of alkyl side chains triggers cooperative behavior, while a nucleation and growth transition is coincident with increasing alkyl chain disorder and driven by biradical state formation. Alkyl chain engineering is integral to rationally controlling these polymorphic behaviors for novel electronic applications.

Publisher

Nature Communications

Published On

Mar 21, 2023

Authors

Daniel William Davies, Bumjoon Seo, Sang Kyu Park, Stephen B. Shiring, Hyunjoong Chung, Prapti Kafle, Dafei Yuan, Joseph W. Strzalka, Ralph Weber, Xiaozhang Zhu, Brett M. Savoie, Ying Diao

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