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Proton Initiated Ligand Exchange Reactions for Colloidal Nanocrystals Functionalized by Inorganic Ligands with Extremely Weak Coordination Ability
Chemistry of Materials ( IF 7.2 ) Pub Date : 2019-12-30 , DOI: 10.1021/acs.chemmater.9b04707 Wenran Wang 1, 2, 3 , Zhenxiao Pan 1 , Huashang Rao 1 , Guizhi Zhang 1 , Han Song 1 , Zhengyan Zhang 1 , Xinhua Zhong 1, 2
Chemistry of Materials ( IF 7.2 ) Pub Date : 2019-12-30 , DOI: 10.1021/acs.chemmater.9b04707 Wenran Wang 1, 2, 3 , Zhenxiao Pan 1 , Huashang Rao 1 , Guizhi Zhang 1 , Han Song 1 , Zhengyan Zhang 1 , Xinhua Zhong 1, 2
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Replacing initial long chain organic ligands by small, stable, and conductive inorganic ligands (ILs) via inorganic ligand exchange reaction (ILER) opens up new opportunities for the functionalization and application of colloidal nanocrystals (NCs). Although IL functionalized NCs have been successfully obtained via ILER for most ILs, some common anions, including F–, NO3–, SO42–, and ClO4– with extremely weak coordination ability, are hardly explored. Herein, we demonstrate for the first time the access of these IL capped NCs via ILER by using H+ as the electrophile reagent, which efficiently and irreversibly strips off the original organic ligands first. A long-term colloidal stability can be realized for these anion capped NCs via the replacement of H+ by other suitable monovalent counterions. It is believed that the successful capping with these hard ILs for soft NCs such as CdSe will not only promote the development of IL exchange theory and mechanism but also significantly enrich the toolbox of colloidal NCs and provide great opportunities in the design and construction of new NC-based devices.
中文翻译：
质子引发的配体交换由无机配体具有极弱的配位能力功能化的胶体纳米晶体的配体交换反应。
通过无机配体交换反应（ILER）用小的，稳定且导电的无机配体（IL）代替初始的长链有机配体，为胶体纳米晶体（NCs）的功能化和应用开辟了新的机遇。虽然IL官能的NC已经经由ILER被成功地获得了大多数离子液体，一些常见的阴离子，包括˚F -，NO 3 -，SO 4 2-，和C10 4 -与极弱的配位能力，几乎不探索。在此，我们首次展示了使用H +通过ILER访问这些具有IL上限的NC作为亲电试剂，它首先有效且不可逆地剥离了原始有机配体。通过用其他合适的单价抗衡离子替换H +，可以实现这些阴离子加帽的NC的长期胶体稳定性。可以相信，用这些硬质离子对CdSe等软质NC的成功封盖不仅将促进IL交换理论和机理的发展，而且将大大丰富胶体NC的工具箱，并为新NC的设计和构建提供巨大的机会。基于设备。
更新日期：2019-12-30
中文翻译：
质子引发的配体交换由无机配体具有极弱的配位能力功能化的胶体纳米晶体的配体交换反应。
通过无机配体交换反应（ILER）用小的，稳定且导电的无机配体（IL）代替初始的长链有机配体，为胶体纳米晶体（NCs）的功能化和应用开辟了新的机遇。虽然IL官能的NC已经经由ILER被成功地获得了大多数离子液体，一些常见的阴离子，包括˚F -，NO 3 -，SO 4 2-，和C10 4 -与极弱的配位能力，几乎不探索。在此，我们首次展示了使用H +通过ILER访问这些具有IL上限的NC作为亲电试剂，它首先有效且不可逆地剥离了原始有机配体。通过用其他合适的单价抗衡离子替换H +，可以实现这些阴离子加帽的NC的长期胶体稳定性。可以相信，用这些硬质离子对CdSe等软质NC的成功封盖不仅将促进IL交换理论和机理的发展，而且将大大丰富胶体NC的工具箱，并为新NC的设计和构建提供巨大的机会。基于设备。
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