A Chained Iodocuprate(I) and its Photoluminescence Behavior

Wang, Rongyan; Qu, Xuejian; Yu, Jie‐Hui; Xu, Ji‐Qing

doi:10.1007/s10876-020-01777-9

Cited by 1 publication

(1 citation statement)

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“…Many works on halide complexes dealing with thermochromism describe this feature in terms of color changes and luminescent behavior [ 43 , 44 ] or by comparing crystallographic parameters by taking into account the sets of X-ray diffraction data at two or more temperatures [ 35 , 36 , 39 , 45 , 46 ]. It should also be noted that two different thermochromic mechanisms have been highlighted in the literature previously: charge transfer decrease, which can be found in iodoplumbate/iodoargentate complexes [ 43 , 44 , 47 ], as well as the contraction of lattice parameters and subtle changes in bond lengths in more structurally labile iodobismuthates [ 36 ] or heterometallic Ag/Cu modified iodoplumbates [ 48 ].…”

Section: Resultsmentioning

confidence: 99%

Copper- and Silver-Containing Heterometallic Iodobismuthates: Features of Thermochromic Behavior

Shentseva

Usoltsev

Korobeynikov

et al. 2023

IJMS

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Nine heterometallic iodobismuthates with the general formula Cat2{[Bi2M2I10}] (M = Cu(I), Ag(I), Cat = organic cation) were synthesized. According to X-ray diffraction data, their crystal structures consisted of {Bi2I10} units interconnected with Cu(I) or Ag(I) atoms through I-bridging ligands, forming one-dimensional polymers. The compounds are thermally stable up to 200 °C. Optical band gaps (Eg), estimated at room temperature via diffuse reflectance measurements, range from 1.81 to 2.03 eV. Thermally induced changes in optical behavior (thermochromism) for compounds 1–9 were recorded, and general correlations were established. The thermal dependence of Eg appears to be close to linear for all studied compounds.

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