Haloplumbate Nanochains Templated by Quaternary Phosphorus: Good Water Stabilities, Thermochromic Luminescenceand Photocurrent Responses

• 作者: CUI Jian-Hao ZHANG Wen-Ting ZHENG Hui-Dong LI Hao-Hong
• 来源期刊: 结构化学
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: coordination chemistry
• 页码范围: 775-784
• 页数: 10页
• 语种: 英文
• DOI: 10.14102/j.cnki.0254-5861.2011-3009

摘要

Two triphenylmethylphosphonium/haloplumbate hybrids, i.e., [(PPh3Me)2(Pb2I6)?CH3CN]n (1) and [(PPh3Me)(PbBr3)]n (2), have been prepared, in which the (PbX3)nn- nanochains built from face-sharing PbX6 octahedra are surrounded by organic templates to assemble the core-shell quantum well. Besides, C?H···π interactions among Ph3PMe+ cations can also be detected, which give rise to the 2-D organic layer of 1 and 1-D chain for 2. The good water stabilities could be induced by the strong C?H···π interactions, which can deter the hydrolysis reaction. The energy band gaps of this work mainly derive from the charge transfer of organic components, but their luminescence stems from the inorganic (PbX3)nn- nanochains with co-existence of free excitons and self-trapped excitons. At temperature lower than 117 K, strong quantum confinement will rule out the free excitons, and self-trapped excitons will dominate, resulting in red-shift luminescence. Moreover, effective and repeatable photocurrent responses can be found in these hybrids.