Miao Dandan, Di Michele Vanessa, Gagnon Félix, Aumaître Cyril, Lucotti Andrea, Del Zoppo Mirella, Lirette Frédéric, Tommasini Matteo, Morin Jean-François
Département de chimie and Centre de Recherche sur les Matériaux Avancés (CERMA), Université Laval, 1045 Ave de la Médecine, Québec, Canada G1V 0A6.
Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy.
J Am Chem Soc. 2021 Aug 4;143(30):11302-11308. doi: 10.1021/jacs.1c05616. Epub 2021 Jul 23.
Linear and helical graphene nanoribbons ( and ) bearing electron-rich pyrrole units have been synthesized by using the photochemical cyclodehydrochlorination (CDHC) reaction. The pyrrole units in the polymer backbone make the polymer electron-rich with moderate bandgap values and relatively high HOMO energy levels. The planarization of the pyrrole unit through cyclization yields a bandgap value almost 0.5 eV lower than that measured for polypyrrole. Conductivity values in the thin film up to 0.12 S/cm were measured for the chemically oxidized (four-point method). Both GNRs showed excellent fluorescence sensing properties for TNT in solution with values up to 6.4 × 10 M.
通过光化学环脱氯化氢（CDHC）反应合成了带有富电子吡咯单元的线性和螺旋形石墨烯纳米带（和）。聚合物主链中的吡咯单元使聚合物富电子，具有适度的带隙值和相对较高的最高占据分子轨道（HOMO）能级。通过环化使吡咯单元平面化，产生的带隙值比聚吡咯测量值低近0.5电子伏特。对于化学氧化的（四点法），薄膜中的电导率值高达0.12 S/cm。两种石墨烯纳米带对溶液中的三硝基甲苯（TNT）都表现出优异的荧光传感特性，值高达6.4×10 M。
