Lathika Aswani Sathish, Rana Shammi, Prasoon Anupam, Sindhu Pooja, Roy Debashree, Ballav Nirmalya
Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pune 411 008, India.
J Phys Chem Lett. 2020 Dec 17;11(24):10548-10551. doi: 10.1021/acs.jpclett.0c03229. Epub 2020 Dec 9.
Wet-chemical fabrication of a crystalline Ag-TCNQ (TCNQ = 7,7,8,8-tetracyanoquinodimethane) thin film on non-Ag substrate is challenging whereby the chemistry was powered by photon energy and/or electrical energy. We report for the first time, direct chemical growth of a Ag-TCNQ thin film on a functionalized Au substrate by employing the layer-by-layer (LbL) approach at ambient reaction conditions. Various Ag(I) salt precursors previously realized to be unsuitable for the fabrication of Ag-TCNQ thin films on non-Ag substrates ultimately gave rise to dense and uniform thin films of Ag-TCNQ. The crucial knob regulating the direct formation of the thin films of Ag-TCNQ was identified to be the pH of the respective Ag(I) solutions.
在非银基底上通过湿化学方法制备结晶态的Ag-TCNQ（TCNQ = 7,7,8,8-四氰基对苯二醌二甲烷）薄膜具有挑战性，此前该化学过程由光子能量和/或电能驱动。我们首次报道，在环境反应条件下，通过逐层（LbL）方法在功能化的金基底上直接化学生长Ag-TCNQ薄膜。先前已认识到各种Ag(I)盐前驱体不适用于在非银基底上制备Ag-TCNQ薄膜，但最终却得到了致密且均匀的Ag-TCNQ薄膜。经确定，调节Ag-TCNQ薄膜直接形成的关键因素是各Ag(I)溶液的pH值。
