Two-Dimensional and Emission-Tunable: An Unusual Perovskite Constructed from Lindqvist-Type [Pb6Br19]7- Nanoclusters

Xinxiong Li; T Thu Ha Do; A Granados Del Águila; Yinjuan Huang; Wangqiao Chen; Yongxin Li; Rakesh Ganguly; Samuel Morris; Qihua Xiong; Dong-Sheng Li; Qichun Zhang

doi:10.1021/acs.inorgchem.8b02535

Two-Dimensional and Emission-Tunable: An Unusual Perovskite Constructed from Lindqvist-Type [Pb₆Br₁₉]^7- Nanoclusters

Inorg Chem. 2018 Nov 19;57(22):14035-14038. doi: 10.1021/acs.inorgchem.8b02535. Epub 2018 Nov 1.

Authors

Affiliations

¹ School of Materials Science and Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798 , Singapore.
² Division of Physics and Applied Physics, School of Physical and Mathematics Science , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore.
³ Division of Chemistry and Biological Chemistry, School of Physical and Mathematics Science , Nanyang Technological University , Singapore 637371 , Singapore.
⁴ College of Material and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials , China Three Gorges University , Yichang 443002 , China.

PMID: 30383376
DOI: 10.1021/acs.inorgchem.8b02535

Abstract

Preparing low-dimensional perovskite materials with novel building units is highly desirable because such materials have already been demonstrated to show unusual physical properties. In this report, we first reported a new and unusual two-dimensional perovskite framework, [B(HIm)₄]₄Pb₁₃Br₃₈ (1), constructed from novel Lindqvist-type [Pb₆Br₁₉]^7- nanoclusters. The as-prepared material shows good water resistance and chemical/heat stability. More importantly, 1 has been proven to exhibit temperature/excitation-wavelength-dependent emission. A possible mechanism has been provided.