DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Supramolecular Metal Halide Complexes for High-Temperature Nonlinear Optical Switches

Journal Article · · Journal of the American Chemical Society

Nonlinear optical (NLO) switching materials, which exhibit reversible intensity modulation in response to thermal stimuli, have found extensive applications across diverse fields, including sensing, photoelectronics, and photonic applications. While significant progress has been made in solid-state NLO switching materials, these materials typically showcase their highest NLO performance near room temperature. However, this performance drastically deteriorates upon heating, primarily due to the phase transition undergone by the materials from non-centrosymmetric to centrosymmetric phase. Here, we introduce a new class of NLO switching materials, solid-state supramolecular compounds 18-Crown-6 ether@Cu2Cl4·4H2O (1·4H2O), exhibiting reversible and stable NLO switching when subjected to near-infrared (NIR) photoexcitation and/or thermal stimuli. The reversible crystal structure in response to external stimuli is attributed to the presence of a weakly coordinated bridging water molecule, facilitated by hydrogen bonding/chelation interactions between the metal halide and crown-ether supramolecules. We observed an exceptionally high second-harmonic generation (SHG) signal under continuous photoexcitation, even at temperatures exceeding 110°C. In addition, the bridging water molecules within the complex can be released and recaptured in a fully reversible manner, all without requiring excessive energy input. This feature allows for precise control of SHG signal activation and deactivation through structural transformations, resulting in a high-contrast off/on ratio, reaching values in the million-fold range.

Research Organization:
University of Maryland, College Park, MD (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
Grant/Contract Number:
SC0018631
OSTI ID:
2337766
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 13 Vol. 146; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (48)

Efficient, Reversible Redox-Switching of Molecular First Hyperpolarizabilities in Ruthenium(II) Complexes Possessing Large Quadratic Optical Nonlinearities journal February 1999
The First Improper Ferroelectric of 2D Multilayered Hybrid Perovskite Enabling Strong Tunable Polarization‐Directed Second Harmonic Generation Effect journal June 2021
Molecular Dynamics of Flexible Polar Cations in a Variable Confined Space: Toward Exceptional Two-Step Nonlinear Optical Switches journal May 2016
Light Emission of Self‐Trapped Excitons in Inorganic Metal Halides for Optoelectronic Applications journal June 2022
The Discovery of Crown Ethers (Noble Lecture) journal August 1988
Efficient Photoswitching of the Nonlinear Optical Properties of Dipolar Photochromic Zinc(II) Complexes journal December 2007
Electron‐Transfer Photochromism To Switch Bulk Second‐Order Nonlinear Optical Properties with High Contrast journal September 2014
An Exceptional Thermally Induced Four‐State Nonlinear Optical Switch Arising from Stepwise Molecular Dynamic Changes in a New Hybrid Salt journal November 2021
Porous and Water Stable 2D Hybrid Metal Halide with Broad Light Emission and Selective H2O Vapor Sorption journal February 2023
Multi‐Stimuli Responsive Luminescence and Domino Phase Transition of Hybrid Copper Halides with Nonlinear Optical Switching Behavior journal March 2023
The crystal structure of a heterobimetallic crown ether complex: [Na(dibenzo-18-crown-6)][FeCl4] journal September 1995
Aerobic oxidation of alkanes in the presence of acetaldehyde catalysed by copper-crown ether journal March 1996
Wave-Equation Description of Nonlinear Optical Interactions book January 2008
First- and second-sphere coordination chemistry of alkali metal crown ether complexes journal May 2001
Resonant Nonlinear Optics in Phase-Coherent Media book January 2000
Supramolecular Approach for Fine-Tuning of the Bright Luminescence from Zero-Dimensional Antimony(III) Halides journal June 2020
Highly Enhanced Third-Harmonic Generation in 2D Perovskites at Excitonic Resonances journal December 2017
Design, Synthesis, Structural and Nonlinear Optical Properties of Photochromic Crystals:  Toward Reversible Molecular Switches journal August 2005
Nonlinear Optical Switching Behavior in the Solid State: A Theoretical Investigation on Anils journal August 2011
Metal- vs Hydrogen-Bonding Complexation in Zinc Complexes of 18-Crown-6 journal June 1994
Inclusion of a Cu2+ Ion by a Large-Cavity Crown Ether Dibenzo-24-Crown-8 through Supramolecular Interactions journal September 2005
Cyclic polyethers and their complexes with metal salts journal December 1967
NH 2 -MIL-53(Al): A High-Contrast Reversible Solid-State Nonlinear Optical Switch journal May 2012
Solid State Molecular Dynamic Investigation of An Inclusion Ferroelectric: [(2,6-Diisopropylanilinium)([18]crown-6)]BF 4 journal June 2014
Observation of Vortex Domains in a Two-Dimensional Lead Iodide Perovskite Ferroelectric journal February 2020
Solid-State Nonlinear Optical Switch with the Widest Switching Temperature Range Owing to Its Continuously Tunable Tc journal March 2020
18-Crown-6 Coordinated Metal Halides with Bright Luminescence and Nonlinear Optical Effects journal January 2021
Strong Second- and Third-Harmonic Generation in 1D Chiral Hybrid Bismuth Halides journal September 2021
Supramolecular Assembly of Halide Perovskite Building Blocks journal June 2022
Unusual High-Temperature Reversible Phase-Transition Behavior, Structures, and Dielectric–Ferroelectric Properties of Two New Crown Ether Clathrates journal October 2015
Plastic Transition to Switch Nonlinear Optical Properties Showing the Record High Contrast in a Single-Component Molecular Crystal journal December 2015
Two-Dimensional Organic–Inorganic Perovskite Ferroelectric Semiconductors with Fluorinated Aromatic Spacers journal October 2019
Room-temperature ferroelectricity in CuInP2S6 ultrathin flakes journal August 2016
Ferroelectricity and polarity control in solid-state flip-flop supramolecular rotators journal February 2009
Inversion symmetry and bulk Rashba effect in methylammonium lead iodide perovskite single crystals journal May 2018
Direct observation of geometric and sliding ferroelectricity in an amphidynamic crystal journal August 2022
Direct evidence of correlation between the second harmonic generation anisotropy patterns and the polarization orientation of perovskite ferroelectric journal August 2017
MnBr2/18-crown-6 coordination complexes showing high room temperature luminescence and quantum yield journal January 2016
A novel acid-controlled second-order nonlinear optical switch based on dimethyldihydropyrene/cyclophanediene photoswitch journal January 2022
Synthetic and structural studies of tin(IV) complexes of crown ethers journal January 1984
Nonlinear optical properties of halide perovskites and their applications journal December 2020
Hydrogen-bonded Networks in Crown Ether Complexes of Hydrated Metal Ions journal May 1998
4-Methoxyanilinium Perrhenate 18-Crown-6: A New Ferroelectric with Order Originating in Swinglike Motion Slowing Down journal June 2013
OLEX2 : a complete structure solution, refinement and analysis program journal January 2009
Crystal structure refinement with SHELXL journal January 2015
SHELXT – Integrated space-group and crystal-structure determination journal January 2015
Metal-free ferroelectric halide perovskite exhibits visible photoluminescence correlated with local ferroelectricity journal June 2022
Cryptands and Cryptates book January 2018