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手性有机-无机化合物([(NHCHCH)NH])[MnBr]Br光致发光和压电晶体的非线性光学活性

Nonlinear Optical Activity of a Chiral Organic-Inorganic ([(NHCHCH)NH])[MnBr]Br Photoluminescent and Piezoelectric Crystal.

作者信息

Rok Magdalena, Miniewicz Andrzej, Zdończyk Maria, Zarychta Bartosz, Mikurenda Julia W, Bartkiewicz Stanisław, Wiśniewska-Bełej Monika, Cybińska Joanna, Piecha-Bisiorek Anna

机构信息

Faculty of Chemistry, University of Wroclaw, 14 F. Joliot - Curie, 50-383 Wroclaw, Poland.

Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland.

出版信息

J Phys Chem Lett. 2024 May 16;15(19):5276-5287. doi: 10.1021/acs.jpclett.4c00709. Epub 2024 May 9.

DOI:10.1021/acs.jpclett.4c00709
PMID:38722175
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11103696/
Abstract

The family of Mn-based organic-inorganic hybrids has greatly expanded due to their advantages in applications. They also show superior bright and size-tunable photoluminescence and can be considered a perfect alternative to toxic lead-based compounds. In this work, we present the detailed structural, optical, and electrical characterization of ([(NHCHCH)NH])[MnBr]Br. The title compound exhibits a unique type of inorganic arrangement created by the trigonal bipyramids. It crystallizes in noncentrosymmetric space group 32, indicating its optical activity, piezoelectricity, and second-order optical nonlinearity proven by the second harmonic of light measurements. The studied crystals exhibit intense photoluminescence originating from the Mn(II) ion T(G) → A transition. The measured lifetime of the photoluminescence emission is ≤1.5 ms, while the measured quantum yield for both powder and crystal samples reaches ∼70%.

摘要

由于其在应用方面的优势，锰基有机-无机杂化物家族得到了极大的扩展。它们还表现出优异的明亮且尺寸可调的光致发光特性，可被视为有毒铅基化合物的理想替代品。在这项工作中，我们展示了([(NHCHCH)NH])[MnBr]Br的详细结构、光学和电学特性。标题化合物呈现出由三角双锥形成的独特无机排列类型。它结晶于非中心对称空间群32中，这表明其具有光学活性、压电性以及通过光的二次谐波测量所证实的二阶光学非线性。所研究的晶体表现出源于Mn(II)离子T(G)→A跃迁的强烈光致发光。光致发光发射的测量寿命≤1.5毫秒，而粉末和晶体样品的测量量子产率均达到约70%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b6c/11103696/c76cb579d16b/jz4c00709_0010.jpg
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