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Title: Linker-Based Bandgap Tuning in Conductive MOF Solid Solutions

Journal Article · · Small

Herein, the synthesis of Cu3(HAB)x(TATHB)2-x (HAB: hexaaminobenzene, TATHB: triaminotrihydroxybenzene) is reported. Synthetic improvement of Cu3(TATHB)2 leads to a more crystalline framework with higher electrical conductivity value than previously reported. The improved crystallinity and analogous structure between TATHB and HAB enable the synthesis of Cu3(HAB)x(TATHB)2-x with ligand compositions precisely controlled by precursor ratios. The electrical conductivity is tuned from 4.2 × 10-8 to 2.9 × 10-5 S cm-1 by simply increasing the nitrogen content in the crystal lattice. Furthermore, computational calculation supports that the solid solution facilitates the band structure tuning. In conclusion, it is envisioned that the findings not only shed light on the ligand-dependent structure–property relationship but create new prospects in synthesizing multicomponent electrically conductive metal-organic frameworks (MOFs) for tailoring optoelectronic device applications.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
National Research Foundation of Korea; National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
2423501
Journal Information:
Small, Journal Name: Small Journal Issue: 11 Vol. 19; ISSN 1613-6810
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (29)

Pseudobinary Solid-Solution: An Alternative Way for the Bandgap Engineering of Semiconductor Nanowires in the Case of GaP-ZnSe journal March 2015
Origin of the Chemiresistive Response of Ultrathin Films of Conductive Metal–Organic Frameworks journal November 2018
A Dual‐Ligand Porous Coordination Polymer Chemiresistor with Modulated Conductivity and Porosity journal January 2020
Charge Separation by Creating Band Bending in Metal–Organic Frameworks for Improved Photocatalytic Hydrogen Evolution journal May 2022
Postsynthetic Modification of Metal−Organic Frameworks for Photocatalytic Applications journal February 2022
Improving the deconvolution and interpretation of XPS spectra from chars by ab initio calculations journal December 2016
Solid-Solution Mixed-Linker Synthesis of Isoreticular Al-Based MOFs for an Easy Hydrophilicity Tuning in Water-Sorption Heat Transformations journal May 2019
Power of Infrared and Raman Spectroscopies to Characterize Metal-Organic Frameworks and Investigate Their Interaction with Guest Molecules journal December 2020
Electrically Conductive Metal–Organic Frameworks journal April 2020
Enhancing Electrical Conductivity of Semiconducting MOFs via Defect Healing journal September 2021
Evaluation of the H 2 Evolving Activity of Benzenehexathiolate Coordination Frameworks and the Effect of Film Thickness on H 2 Production journal January 2018
Anomalous Band Gap Behavior in Mixed Sn and Pb Perovskites Enables Broadening of Absorption Spectrum in Solar Cells journal May 2014
Two-Dimensional Metal–Organic Surfaces for Efficient Hydrogen Evolution from Water journal December 2014
Organic Solid Solution Composed of Two Structurally Similar Porphyrins for Organic Solar Cells journal February 2015
Solid–Solution-Based Metal Alloy Phase for Highly Reversible Lithium Metal Anode journal April 2020
Synthesis of a Copper 1,3,5-Triamino-2,4,6-benzenetriol Metal–Organic Framework journal October 2020
Continuous Electrical Conductivity Variation in M 3 (Hexaiminotriphenylene) 2 (M = Co, Ni, Cu) MOF Alloys journal June 2020
Engineering Interfacial Charge Transfer in CsPbBr 3 Perovskite Nanocrystals by Heterovalent Doping journal December 2016
The Two-Dimensional A x Cd x Bi 4– x Q 6 (A = K, Rb, Cs; Q = S, Se): Direct Bandgap Semiconductors and Ion-Exchange Materials journal May 2017
Signature of Metallic Behavior in the Metal–Organic Frameworks M 3 (hexaiminobenzene) 2 (M = Ni, Cu) journal September 2017
Stabilization of Hexaaminobenzene in a 2D Conductive Metal–Organic Framework for High Power Sodium Storage journal July 2018
Synthetic Routes for a 2D Semiconductive Copper Hexahydroxybenzene Metal–Organic Framework journal September 2018
Welding Metallophthalocyanines into Bimetallic Molecular Meshes for Ultrasensitive, Low-Power Chemiresistive Detection of Gases journal December 2018
New Family of Argyrodite Thioantimonate Lithium Superionic Conductors journal October 2019
Nitrogenated holey two-dimensional structures journal March 2015
Strain engineering of metal-based nanomaterials for energy electrocatalysis journal January 2019
Defect engineering of oxide perovskites for catalysis and energy storage: synthesis of chemistry and materials science journal January 2021
Mixed-component metal–organic frameworks (MC-MOFs): enhancing functionality through solid solution formation and surface modifications journal January 2011
Photovoltaic materials: Present efficiencies and future challenges journal April 2016