期刊
CHEMISTRY OF MATERIALS
卷 32, 期 24, 页码 10708-10718出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.0c03984
关键词
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资金
- Russian Science Foundation [19-73-20196]
- Rutgers University
- Center for Functional Nanomaterials, which is a U.S. DOE Office of Science Facility, at Brookhaven National Laboratory [DE-SC0012704]
- Russian Science Foundation [19-73-20196] Funding Source: Russian Science Foundation
The CuI-derived inorganic-organic hybrid compounds are considered as promising phosphors for the lighting industry. Herein, exploiting N-monoalkylated hexaminium salts, [R-HMTA]X (R = Me, Et, Pr, and propargyl; X = Cl and I), as multibridging ligands, we have designed and synthesized a unique class of one-dimensional and two-dimensional hybrid CuI-materials. The reactions of these salts with CuI give rise to Allin-One (MO) type compounds combining ionic and dative bonds between inorganic and organic components. The latter is formed by structurally unique inorganic [CuxIy]((y-x)-) clusters, chains, or sheets interconnected through [R-HMTA](+) cations via multiple Cu-N bonds. The so-designed compounds at ambient temperature exhibit tunable luminescence spanning from deep blue to red color (lambda(em) = 430-625 nm) with microsecond lifetimes and the quantum efficiency of up to 78%. Remarkably, the MO materials feature nontrivial excitation- (ED) and temperature-dependent (TD) luminescence, allowing their emission color to be finely adjusted from deep blue to red through changing the excitation wavelength and/or temperature. Based on the TD emission spectroscopy and theoretical calculations, a possible mechanism of the luminescence has been proposed. The very interesting luminescence characteristics coupled with good thermal and photostability render these MO hybrid materials possible candidates for applications in energy-efficient lighting devices.
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