Bulk Assemblies of Lead Bromide Trimer Clusters with Geometry-Dependent Photophysical Properties

Sujin Lee; Chenkun Zhou; Jennifer Neu; Drake Beery; Ashley Arcidiacono; Maya Chaaban; Haoran Lin; Alyssa Gaiser; Banghao Chen; Thomas E. Albrecht-Schmitt; Theo Siegrist; Biwu Ma

doi:10.1021/acs.chemmater.9b03893

Bulk Assemblies of Lead Bromide Trimer Clusters with Geometry-Dependent Photophysical Properties

Sujin Lee, Chenkun Zhou, Jennifer Neu, Drake Beery, Ashley Arcidiacono, Maya Chaaban, Haoran Lin, Alyssa Gaiser, Banghao Chen, Thomas E. Albrecht-Schmitt, Theo Siegrist, Biwu Ma

Research output: Contribution to journal › Article › peer-review

63 Scopus citations

Abstract

Single crystalline bulk assemblies of metal halide clusters show great potential as highly efficient light emitters with tunable photophysical properties. However, synthetic control of the geometry of the clusters in a rational manner has not been well established, and the relationships between the photophysical properties and structures of this emerging class of zero-dimensional materials are still not well understood. Here, we report the synthesis and characterization of two bulk assemblies of lead bromide clusters, (bmpy)₆[Pb₃Br₁₂] (T1) and (bmpy)₉[ZnBr₄]₂[Pb₃Br₁₁] (T2) (bmpy: 1-butyl-1-methylpyrrolidinium), which contain metal halide trimer clusters with different geometries. T1 with chain-shaped [Pb₃Br₁₂]^6- clusters is not emissive at room temperature, whereas T2 with triangle-shaped [Pb₃Br₁₁]^5- clusters exhibits yellowish-green emission peaked at 564 nm with a photoluminescence quantum efficiency of 7% at room temperature. Detailed analysis of the structural and photophysical properties show that the photophysical properties and excited-state dynamics of these materials are highly dependent on the geometry of the metal halide clusters.

Original language	English
Pages (from-to)	374-380
Number of pages	7
Journal	Chemistry of Materials
Volume	32
Issue number	1
DOIs	https://doi.org/10.1021/acs.chemmater.9b03893
State	Published - Jan 14 2020
Externally published	Yes

Funding

This work is supported by the National Science Foundation (DMR-1709116) and the Air Force Office of Scientific Research (AFOSR) (17RT0906). J.N. acknowledges support from NSF-DMR-1606952. Part of the work was carried out at the National High Magnetic Field Laboratory, which is supported by the National Science Foundation under NSF DMR-1644779 and the State of Florida. The authors thank Dr. Kenneth Hanson for the help with emission measurements.

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title = "Bulk Assemblies of Lead Bromide Trimer Clusters with Geometry-Dependent Photophysical Properties",

abstract = "Single crystalline bulk assemblies of metal halide clusters show great potential as highly efficient light emitters with tunable photophysical properties. However, synthetic control of the geometry of the clusters in a rational manner has not been well established, and the relationships between the photophysical properties and structures of this emerging class of zero-dimensional materials are still not well understood. Here, we report the synthesis and characterization of two bulk assemblies of lead bromide clusters, (bmpy)6[Pb3Br12] (T1) and (bmpy)9[ZnBr4]2[Pb3Br11] (T2) (bmpy: 1-butyl-1-methylpyrrolidinium), which contain metal halide trimer clusters with different geometries. T1 with chain-shaped [Pb3Br12]6- clusters is not emissive at room temperature, whereas T2 with triangle-shaped [Pb3Br11]5- clusters exhibits yellowish-green emission peaked at 564 nm with a photoluminescence quantum efficiency of 7% at room temperature. Detailed analysis of the structural and photophysical properties show that the photophysical properties and excited-state dynamics of these materials are highly dependent on the geometry of the metal halide clusters.",

author = "Sujin Lee and Chenkun Zhou and Jennifer Neu and Drake Beery and Ashley Arcidiacono and Maya Chaaban and Haoran Lin and Alyssa Gaiser and Banghao Chen and Albrecht-Schmitt, {Thomas E.} and Theo Siegrist and Biwu Ma",

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AU - Chaaban, Maya

AU - Lin, Haoran

AU - Gaiser, Alyssa

AU - Chen, Banghao

AU - Albrecht-Schmitt, Thomas E.

AU - Siegrist, Theo

AU - Ma, Biwu

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Bulk Assemblies of Lead Bromide Trimer Clusters with Geometry-Dependent Photophysical Properties

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