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

Abstract

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...

Oxidation-Induced Dissolution Recrystallization Structural Transformation Strategy Enhanced Nonlinear Optical Effect of Hybrid Chiral Tin Bromide Single Crystals

“…The octahedron forms an asymmetric unit of R -2-mpipSnBr 6 , which is a typical 0D perovskite structure, through hydrogen bonding (N 1 –H···Br c , 2.537 Å) with the meta-N atom of the R -2-mpip 2+ cationic methyl group. Surprisingly, in the presence of DRST, R -2-mpipSnBr 6 single crystals displayed a wavy arrangement of organic constituents that is similar to that of the lead iodide analogue ( R / S -2-C 5 H 14 N 2 ) 2 PbI 6 . This results from the breakage of hydrogen bonds on the ortho-position N atoms of the inorganic polyhedral and the structural modifications to the polyhedral.…”

“…Surprisingly, in the presence of DRST, R-2-mpipSnBr 6 single crystals displayed a wavy arrangement of organic constituents that is similar to that of the lead iodide analogue (R/S-2-C 5 H 14 N 2 ) 2 PbI 6 . 37 This results from the breakage of hydrogen bonds on the ortho-position N atoms of the inorganic polyhedral and the structural modifications to the polyhedral. It can be seen that DRST has no effect on the structure of organic components.…”

Chirality–Racemization Strategy Toward Copper (I) Iodide Hybrid Single‐Crystalline Scintillators for X‐Ray Detection and Imaging Applications

“…[35] And Xu research group have synthesized zero-dimensional (0D) chiral lead-based hybrid organic-inorganic (R-/S-2-C 5 H 14 N 2 ) 2 PbI 6 and chiral (R/S-MPEA 2 SnBr 6 ), which demonstrates the strong second harmonic generation response for promising applications in NLO photonic devices. [31,36] The above studies about chiral multifunctional materials focus on lead (Pb) halide materials. However, the toxicity and instability of Pb hindered the optoelectronic applications of these chiral hybrid halide materials.…”

“…[17,18] Chiral hybrid organic-inorganic materials formed by substituting the A-site cations with the chiral organic cations manifest the noncentrosymmetric structures, which enable them exhibit the interesting optoelectronic functionality, such as chiroptics [19][20][21] and chiro-spintronics. [22,23] Moreover, highly luminous organic ligands and inorganic frameworks are introduced into the chiral material systems, which exhibit the multifunctionally chiroptical characteristics in CPL detection, [24][25][26] chirality-induced light-emitting diode (LED), [27][28][29] biological security, [30] information storage, [31] and three-dimensional (3D) displaying. [32] And thus, a lot of efforts have been made to achieve multifunctionalities of highperformance chiral metal halide hybrid materials and devices.…”

Three-Dimensional Perovskite Phase Transition Materials with Switchable Second Harmonic Generation Properties Introduced by Homochiral (1S,4S)-2,5-Diazabicyclo[2.2.1]-heptane

“…Interestingly, because the chiral space group belongs to one of the noncentrosymmetric space groups, the utilization of chiral organic molecules into OIHP can break its inherent symmetry and effectively reduce structural symmetry. − Therefore, it is more likely to obtain SHG-responsive substances by designing chiral materials. When designing synthetic molecules, choosing chiral centers gives the crystal a greater probability of crystallizing in polar space groups. ,− …”