New Forms of CdSe: Molecular Wires, Gels, and Ordered Mesoporous Assemblies,Journal of the American Chemical Society

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New Forms of CdSe: Molecular Wires, Gels, and Ordered Mesoporous Assemblies
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2017-02-22 , DOI: 10.1021/jacs.6b10077
Margaret H. Hudson ₁ , Dmitriy S. Dolzhnikov ₁ , Alexander S. Filatov ₁ , Eric M. Janke ₁ , Jaeyoung Jang ₁ , Byeongdu Lee ₂ , Chengjun Sun ₂ , Dmitri V. Talapin _{1,

3}

Affiliation

This work investigates the structure and properties of soluble chalcogenidocadmates, a molecular form of cadmium chalcogenides with unprecedented one-dimensional bonding motifs. The single crystal X-ray structure reveals that sodium selenocadmate consists of infinite one-dimensional wires of (Cd2Se3)n2n- charge balanced by Na+ and stabilized by coordinating solvent molecules. Exchanging the sodium cation with tetraethylammonium or didodecyldimethylammonium expands the versatility of selenocadmate by improving its solubility in a variety of polar and nonpolar solvents without changing the anion structure and properties. The introduction of a micelle-forming cationic surfactant allows for the templating of selenocadmate, or the analogous telluride species, to create ordered organic-inorganic hybrid CdSe or CdTe mesostructures. Finally, the interaction of selenocadmate "wires" with Cd2+ ions creates an unprecedented gel-like form of stoichiometric CdSe. We also demonstrate that these low-dimensional CdSe species show characteristic semiconductor behavior, and can be used in photodetectors and field-effect transistors.

中文翻译：

CdSe 的新形式：分子线、凝胶和有序介孔组件

这项工作研究了可溶性硫属元素镉化合物的结构和性质，这是一种具有前所未有的一维键合基序的镉硫属元素化物的分子形式。单晶 X 射线结构显示硒镉酸钠由 (Cd2Se3)n2n- 电荷的无限一维线组成，由 Na+ 平衡并通过配位溶剂分子稳定。用四乙基铵或双十二烷基二甲基铵交换钠阳离子，通过提高其在各种极性和非极性溶剂中的溶解度而不改变阴离子结构和性质，扩展了硒代镉的多功能性。形成胶束的阳离子表面活性剂的引入允许对硒钙酸盐或类似的碲化物物种进行模板化，以创建有序的有机-无机杂化 CdSe 或 CdTe 介观结构。最后，硒钙酸盐“线”与 Cd2+ 离子的相互作用产生了前所未有的凝胶状化学计量 CdSe。我们还证明了这些低维 CdSe 物种显示出典型的半导体行为，可用于光电探测器和场效应晶体管。

更新日期：2017-02-22

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