writer：Bin Mu, Yu Zhao, Xun Li, Xuhong Quan, and Wei Tian*
keywords：iquid crystal, discotic columnar mesophase, hydrogen bond, conductivity, luminescence, thermochromic behavior
source：期刊
specific source：ACS Appl. Mater. Interfaces 2020, 12, 9637-9645
Issue time：2020年

Developing discotic columnar liquid crystals (LCs) with both high electrical conductivity and strong luminescence remains a challenge because the intracolumnar interdisc π-π stacking usually in ordered discotic columnar LCs is essential to generate charge transport pathways but normally detrimental to light emissions. We here present tricyanotristyrylbenzene-based quasi-discotic LCs upon bearing three wedge-shaped alkyl tails for addressing this issue. The resulted columnar materials displayed both high electrical conductivity and strong luminescence, especially for the ones stabilized by multivalent hydrogen-bonding interactions. Besides, an interesting thermochromic luminescence tuning behavior in a smooth manner was observed over a wide wavelength range for the hydrogen bond-stabilized columnar LCs. This study will lead to the future design and application of new multifunctional optoelectronic materials by integrating excellent conductivity and luminescence tuning behaviors.

全文链接：

https://dx.doi.org/10.1021/acsami.9b20769