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New Forms of CdSe: Molecular Wires, Gels, and Ordered Mesoporous Assemblies

Title
New Forms of CdSe: Molecular Wires, Gels, and Ordered Mesoporous Assemblies
Author
장재영
Keywords
FIELD-EFFECT TRANSISTORS; COLLOIDAL NANOCRYSTALS; QUANTUM DOTS; SOLAR-CELLS; METAL CHALCOGENIDES; PORE ORGANIZATION; SCALE SYNTHESIS; GAS SEPARATION; SEEDED GROWTH; CDE E
Issue Date
2017-03
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v. 139, no. 9, page. 3368-3377
Abstract
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)(n)2(n-) 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.
URI
https://pubs.acs.org/doi/10.1021/jacs.6b10077http://repository.hanyang.ac.kr/handle/20.500.11754/113299
ISSN
0002-7863
DOI
10.1021/jacs.6b10077
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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