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Related Experiment Video

Updated: Jun 13, 2025

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

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Published on: June 9, 2023

Reversible Structural Phase Transitions in Zero-Dimensional Cu(I)-Based Metal Halides for Dynamically Tunable

Ran An^1,2, Qishun Wang², Yuan Liang^2,3

¹Faculty of Chemistry, Northeast Normal University, Jilin, Changchun, 130024, China E-mail: addresses.

Angewandte Chemie (International Ed. in English)

|September 12, 2024

Summary

This summary is machine-generated.

Two novel zero-dimensional metal halides, (C19H18P)2CuI3 and (C19H18P)2Cu4I6, exhibit distinct luminescence and reversible phase transitions. These properties enable a unique anti-counterfeiting system with dynamic color shifts.

Keywords:

anti-counterfeiting hybrid metal halides structural phase transitions tunable emissions zero-dimensional

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Published on: December 29, 2016

Area of Science:

Materials Science
Solid-State Chemistry
Photophysics

Background:

Zero-dimensional (0D) metal halides are crucial for tunable optical properties but face challenges in understanding their luminescence and phase transitions.
Developing new materials with controllable optical functionalities is essential for advanced applications.

Purpose of the Study:

To design and synthesize inter-transformable 0D Cu(I)-based metal halides.
To elucidate their luminescence mechanisms and structural phase transitions.
To explore their potential in anti-counterfeiting applications.

Main Methods:

Synthesis of (C19H18P)2CuI3 and (C19H18P)2Cu4I6 under distinct conditions.
Experimental characterization of optical properties and luminescence.
Density functional theory (DFT) calculations for mechanism elucidation.
Investigation of reversible structural phase transitions.

Main Results:

Two inter-transformable 0D Cu(I) metal halides, (C19H18P)2CuI3 and (C19H18P)2Cu4I6, were synthesized.
(C19H18P)2CuI3 shows bright cyan emission (77% PLQY) from self-trapped excitons.
(C19H18P)2Cu4I6 exhibits yellow-orange fluorescence (83% PLQY) due to charge transfer effects and Cu-Cu bonding.
Both compounds display reversible structural phase transitions.

Conclusions:

The study provides insights into luminescence mechanisms and phase transitions in 0D metal halides.
The reversible phase transitions enable a dynamic anti-counterfeiting system with color-shifting capabilities.
This work offers new strategies for modulating optical properties and developing advanced optical materials.