Synthesis, characterization and phase transitions in the inorganic-organic layered perovskite-type hybrids [(CnH2n+1NH3)2PbI4], n=4, 5 and 6
Synthesis, characterization and phase transitions in the inorganic-organic layered perovskite-type hybrids [(CnH2n+1NH3)2PbI4], n=4, 5 and 6
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DOI：
10.1107/s0108768107031758
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发表时间：
2007-10-01
影响因子：
1.9
通讯作者：
Lemmerer, Andreas
中科院分区：
文献类型：
--
作者：
Billing, David G.;Lemmerer, Andreas
三种无机-有机层状钙钛矿型杂化物的通式为[(CnH2n(+)1NH3)(2)PbI4]，n = 4、5和6，在256至393 K的温度范围内表现出许多可逆的一级相变。[(C4H9NH3)(2)PbI4]具有单相变，[(C5H11NH3) 2PbI4]有两个相变，[(C6H13NH3)(2)PbI4]有三个相变。在所有三种情况下，最低温度相变都是热致变色的，对于 [( C4H9NH3)(2)PbI4] 和 [( C6H13NH3)(2)PbI4]，晶体颜色从最低温度相中的黄色变为橙色，对于 [(C5H11NH3)(2)PbI4] 晶体从橙色变为红色。所有三种化合物均通过单晶 X 射线衍射、SC-XRD 研究了与该相变相关的结构细节。
Three inorganic-organic layered perovskite-type hybrids of the general formula [( CnH2n (+) 1NH3)(2)PbI4], n = 4, 5 and 6, display a number of reversible first-order phase transitions in the temperature range from 256 to 393 K. [( C4H9NH3)(2)PbI4] has a single phase transition, [( C5H11NH3) 2PbI4] has two phase transitions and [( C6H13NH3)(2)PbI4] has three phase transitions. In all three cases, the lowest-temperature phase transition is thermochromic and the crystals change colour from yellow in their lowest-temperature phase to orange in their higher-temperature phase for [( C4H9NH3)(2)PbI4] and [( C6H13NH3)(2)PbI4], and from orange to red for [( C5H11NH3)(2)PbI4]. The structural details associated with this phase transition have been investigated via single-crystal Xray diffraction, SC-XRD, for all three compounds.