Methylpiperazine based 0D chiral hybrid lead halides for second harmonic generation

Hybrid organic-inorganic metal halides (HOMHs) have recently attracted broad research interest for their structural tunability and remarkable optoelectronic properties. Among them, chiral HOMHs have demonstrated promising applications in second-order nonlinear optics (NLO) on account of their inhere...

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Published in:Dalton transactions : an international journal of inorganic chemistry 2022-05, Vol.51 (18), p.7248-7254
Main Authors: Jia, Xiaodi, Zheng, Yongshen, Cheng, Puxin, Han, Xiao, Xu, Liang, Xu, Jialiang
Format: Article
Language:English
Subjects:
Amines
Dichroism
Halides
Laser damage
Lead compounds
Metal halides
Nonlinear optics
Optical properties
Optoelectronics
Second harmonic generation
Thermal stability
Yield point
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Summary:Hybrid organic-inorganic metal halides (HOMHs) have recently attracted broad research interest for their structural tunability and remarkable optoelectronic properties. Among them, chiral HOMHs have demonstrated promising applications in second-order nonlinear optics (NLO) on account of their inherent noncentrosymmetric structures. Herein, we synthesized two new chiral HOMHs, ( -/ -2-C H N ) PbI , based on -/ -2-methylpiperazine chiral amines. They feature a band gap close to 2.9 eV with high phase purity as well as environmental and thermal stability. The induction of the chiral optical properties of ( -/ -2-C H N ) PbI by chiral organic cations was verified by circular dichroism (CD) spectroscopy. Moreover, the resulted HOMHs materials demonstrate a strong second harmonic generation response with a large laser damage threshold (∼2.97 mJ cm ), showing promising applications in NLO photonic devices.
ISSN:1477-9226
1477-9234
DOI:10.1039/d2dt00557c