Vapochromic luminescence of a spin-coated copper(I) complex thin film by the direct coordination of vapour molecules
Vapochromic luminescence of a spin-coated copper(I) complex thin film by the direct coordination of vapour molecules
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DOI：
10.1039/d0dt03167d
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发表时间：
2020-12-14
影响因子：
4
通讯作者：
Kato, Masako
中科院分区：
文献类型：
--
作者：
Kondo, Sae;Yoshimura, Nobutaka;Kato, Masako
使用聚乙烯吡咯烷酮 (PVP) 和吡啶通过旋涂制备了简单且高发光的 Cu(I) 配合物 [CuI(PPh3)(2)(py)]（PPh3 = 三苯基膦，py = 吡啶）（Cu-py）的均匀薄膜，且不破坏该配合物。厚度为1μm的薄膜（Cu-py@PVP）表现出对蒸汽的有效响应，当暴露于N-杂芳族化合物（例如py和2-甲基吡嗪（Mepyz））的蒸汽时，表现出蓝绿色和黄色之间的可逆发光变化。在晶体状态下也观察到配体取代引起的气色发光颜色变化，但薄膜的响应明显快于晶体样品。通过比较 Cu-py 晶体与新制备的 Cu(I) 配合物 [CuI(Mepyz)(PPh3)(2)] (Cu-Mepyz) 的发光特性，充分表征了薄膜上蒸汽诱导的配体交换。
A homogeneous thin film of a simple and highly luminescent Cu(I) complex, [CuI(PPh3)(2)(py)] (PPh3 = triphenylphosphine, py = pyridine) (Cu-py), was fabricated via spin coating using polyvinylpyrrolidone (PVP) and pyridine without destroying the complex. The thin film (Cu-py@PVP), with a thickness of 1 mu m, exhibited efficient response to vapour, exhibiting reversible luminescence changes between blue-green and yellow upon exposure to vapours of N-heteroaromatic compounds such as py and 2-methylpyrazine (Mepyz). Vapochromic luminescence colour change resulting from ligand substitution was also observed in the crystal state, but the response of the thin film was remarkably faster than that of the crystalline samples. The vapour-induced ligand exchange on the thin film was fully characterised by comparing the luminescence properties of the Cu-py crystal with the newly prepared Cu(I) complex, [CuI(Mepyz)(PPh3)(2)] (Cu-Mepyz).