Issue 40, 2023

High piezoelectric, dielectric relaxation and semiconductor properties in a one-dimensional organic–inorganic hybrid complex: [2-methyl-1,5-pentanediamine][BiCl5]

Abstract

Molecular-based phase change materials are a kind of special multi-functional molecular material, which can possess ferroelectric, pyroelectric, dielectric, piezoelectric, nonlinear and semiconductor properties; in particular, organic–inorganic hybrid complexes, containing both organic and inorganic materials, have received much attention. In the past ten years, although a lot of breakthroughs have been made, the key parameters still need to be further explored. In this work, we have synthesized a group of organic–inorganic hybrid multifunctional materials with dielectric relaxation, [2-MPDA][BiX5] (2-MPDA = 2-methyl-1,5-pentanediamine, X = Cl, Br, I), and the variable temperature structure, DSC (differential scanning calorimetry), variable temperature dielectric, SHG (second harmonic generation), ultraviolet absorption and piezoelectric properties were measured and analyzed. The results show that [2-MPDA][BiCl5] (1) has a reversible structural phase transition near 166 K, and the space groups of [2-MPDA][BiBr5] (2) and [2-MPDA][BiI5] (3) are Pnma. The band gap is 3.02 eV, 2.63 eV and 1.93 eV at 460 nm, 490 nm and 660 nm, respectively. The piezoelectric coefficient d33 = 6 pC N−1 along the c-axis of compound 1 is the same as that of KTP (b-aixs), and is better than that of ZnO (c-aixs), croconic acid (c-aixs) and Nylon-11 (thin film). This work provides a new idea and method for the exploration of molecular-based lead-free structure phase change multifunctional materials.

Graphical abstract: High piezoelectric, dielectric relaxation and semiconductor properties in a one-dimensional organic–inorganic hybrid complex: [2-methyl-1,5-pentanediamine][BiCl5]

Supplementary files

Article information

Article type
Paper
Submitted
11 Aug. 2023
Accepted
29 Sept. 2023
First published
30 Sept. 2023

J. Mater. Chem. C, 2023,11, 13675-13680

High piezoelectric, dielectric relaxation and semiconductor properties in a one-dimensional organic–inorganic hybrid complex: [2-methyl-1,5-pentanediamine][BiCl5]

Z. Hu, X. Liu, S. Sun, C. Gong, N. Liu and J. Gao, J. Mater. Chem. C, 2023, 11, 13675 DOI: 10.1039/D3TC02873A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements