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Contrasting Ligand-Exchange Behavior of Wurtzite and Zinc-Blende Cadmium Telluride Nanoplatelets
Chemistry of Materials ( IF 7.2 ) Pub Date : 2021-02-12 , DOI: 10.1021/acs.chemmater.0c04247 Haochen Sun 1 , William E. Buhro 1
Chemistry of Materials ( IF 7.2 ) Pub Date : 2021-02-12 , DOI: 10.1021/acs.chemmater.0c04247 Haochen Sun 1 , William E. Buhro 1
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The ligand-exchange chemistries of wurtzite (WZ) and zinc-blende (ZB) CdTe nanoplatelets are compared and contrasted. WZ CdTe nanoplatelets of composition (CdTe)[(n-octylamine)0.15(oleylamine)0.27] undergo reversible L-type to Z-type ligand exchange with Cd(oleate)2, Zn(oleate)2, CdCl2, and ZnCl2. However, the WZ CdTe nanoplatelets are unstable with anionic X-type ligation. In contrast, ZB CdTe nanoplatelets of composition (CdTe)3[Cd(carboxylate)2]0.74 (carboxylate is a mixture of oleate and propionate) undergo semireversible X-type to X′-type ligand exchange with CdCl2, CdBr2, and ZnCl2 but do not exhibit Z-type to L-type ligand exchange. The contrasting ligand-exchange behaviors of the WZ and ZB CdTe nanoplatelets are consistent with their contrasting facet structures. The WZ nanoplatelets express majority nonpolar facets and prefer neutral L- or Z-type ligation, whereas the ZB nanoplatelets express polar, cationic facets and prefer anionic X-type ligation.
中文翻译：
纤锌矿和碲化锌-镉-镉碲纳米片的对比配体交换行为
比较和对比了纤锌矿（WZ）和闪锌矿（ZB）CdTe纳米片的配体交换化学。组成为（CdTe）[（正辛胺）0.15（油胺）0.27 ]的WZ CdTe纳米片与Cd（油酸酯）2，Zn（油酸酯）2，CdCl 2和ZnCl 2进行可逆的L型至Z型配体交换。但是，WZ CdTe纳米血小板在阴离子X型连接中不稳定。相比之下，组成为（CdTe）3 [Cd（羧酸盐）2 ] 0.74（羧酸盐是油酸盐和丙酸盐的混合物）的ZB CdTe纳米片与CdCl进行半可逆的X型至X'型配体交换2，CdBr 2和ZnCl 2，但不表现出Z型至L型配体交换。WZ和ZB CdTe纳米片的对比配体交换行为与其对比的刻面结构一致。WZ纳米血小板表达大多数非极性小平面，并且倾向于中性L型或Z型连接，而ZB纳米血小板表达极性，阳离子小平面，并且优选阴离子X型连接。
更新日期：2021-03-09
中文翻译：
纤锌矿和碲化锌-镉-镉碲纳米片的对比配体交换行为
比较和对比了纤锌矿（WZ）和闪锌矿（ZB）CdTe纳米片的配体交换化学。组成为（CdTe）[（正辛胺）0.15（油胺）0.27 ]的WZ CdTe纳米片与Cd（油酸酯）2，Zn（油酸酯）2，CdCl 2和ZnCl 2进行可逆的L型至Z型配体交换。但是，WZ CdTe纳米血小板在阴离子X型连接中不稳定。相比之下，组成为（CdTe）3 [Cd（羧酸盐）2 ] 0.74（羧酸盐是油酸盐和丙酸盐的混合物）的ZB CdTe纳米片与CdCl进行半可逆的X型至X'型配体交换2，CdBr 2和ZnCl 2，但不表现出Z型至L型配体交换。WZ和ZB CdTe纳米片的对比配体交换行为与其对比的刻面结构一致。WZ纳米血小板表达大多数非极性小平面，并且倾向于中性L型或Z型连接，而ZB纳米血小板表达极性，阳离子小平面，并且优选阴离子X型连接。
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