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

Title: The Coordination Behaviour of CuI Photosensitizers Bearing Multidentate Ligands Investigated by X-ray Absorption Spectroscopy

Journal Article · · Chemistry - A European Journal

A systematic series of four novel homo- and heteroleptic Cu(I)photosensitizers based on tetradentate 1,10-phenanthroline ligands of the type X^N^N^X containing two additional donor moieties in the 2,9-position (X=SMe or OMe) were designed. Their solid-state structures were assessed by X-ray diffraction. Cyclic voltammetry, UV-vis absorption, emission and X-ray absorption spectroscopy were then used to determine their electrochemical, photophysical and structural features in solution. Following, time-resolved X-ray absorption spectroscopy in the picosecond time scale, coupled with time-dependent density functional theory calculations, provided in-depth information on the excited state electron configurations. For the first time, a significant shortening of the Cu-X distance and a change in the coordination mode to a pentacoordinated geometry is shown in the excited states of the two homoleptic complexes. These findings are important with respect to a precise understanding of the excited state structures and a further stabilization of this type of photosensitizers.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); IMDEA Nanoscience Inst., Madrid (Spain); Univ. of Stuttgart (Germany)
Sponsoring Organization:
USDOE Office of Science (SC); German Research Foundation (DFG); Instituto IMDEA Nanociencia; Acciones de Dinamizacijn Europa Investigacion; Spanish Ministerio de Ciencia; Baden- Werttemberg Foundation; Ayudante de Investigacion; Ministry of Science and Innovation (Spain); Community of Madrid (Spain)
Grant/Contract Number:
AC02-06CH11357; SEV-2016-0686; EIN2019-103399; PID2019-111086RA-I00; TS 330/4-1; KA 4671/2-1; TS 330/3-1; PEJ-2019-AI/AMB-13038
OSTI ID:
1658815
Alternate ID(s):
OSTI ID: 1646610
Journal Information:
Chemistry - A European Journal, Vol. 26, Issue 43; ISSN 0947-6539
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

References (108)

Catalyst: Chemistry’s Role in Providing Clean and Affordable Energy for All journal October 2016
[Cu(N^N)(P^P)] + complexes with 2,2′:6′,2′′-terpyridine ligands as the N^N domain journal January 2015
Re-evaluating the Cu K pre-edge XAS transition in complexes with covalent metal–ligand interactions journal January 2015
Characterization of the Excited State Properties of Some New Photosensitizers of the Ruthenium (Polypyridine) Family journal November 1981
Molecular Construction Kit for Tuning Solubility, Stability and Luminescence Properties: Heteroleptic MePyrPHOS-Copper Iodide-Complexes and their Application in Organic Light-Emitting Diodes journal August 2013
A series of luminescent Cu(i) mixed-ligand complexes containing 2,9-dimethyl-1,10-phenanthroline and simple diphosphine ligands journal January 2006
Death and Rebirth: Photocatalytic Hydrogen Production by a Self-Organizing Copper–Iron System journal April 2014
Heteroleptic Copper(I) Complexes Prepared from Phenanthroline and Bis-Phosphine Ligands: Rationalization of the Photophysical and Electrochemical Properties journal November 2018
Insights into the Mechanism of Photocatalytic Water Reduction by DFT-Supported In Situ EPR/Raman Spectroscopy journal August 2011
Photochemistry of transition metal complexes. Mechanism and efficiency of energy conversion by electron-transfer quenching journal May 1975
Photoactive mono- and polynuclear Cu(i)–phenanthrolines. A viable alternative to Ru(ii)–polypyridines? journal January 2001
Copper-Based Photosensitisers in Water Reduction: A More Efficient In Situ Formed System and Improved Mechanistic Understanding journal December 2015
Synthesis and Structural Characterization of Cu(I) and Ni(II) Complexes that Contain the Bis[2-(diphenylphosphino)phenyl]ether Ligand. Novel Emission Properties for the Cu(I) Species journal June 2002
Future Global Energy Prosperity: The Terawatt Challenge journal June 2005
Determination of side products in the photocatalytic generation of hydrogen with copper photosensitizers by resonance Raman spectroelectrochemistry journal January 2016
Nickel–Thiolate Complex Catalyst Assembled in One Step in Water for Solar H 2 Production journal December 2011
Improving the photoresponse of copper(i) dyes in dye-sensitized solar cells by tuning ancillary and anchoring ligand modules journal January 2013
Chromium(0), Molybdenum(0), and Tungsten(0) Isocyanide Complexes as Luminophores and Photosensitizers with Long-Lived Excited States journal April 2017
An Efficient Homogeneous Intermolecular Rhenium-Based Photocatalytic System for the Production of H 2 journal March 2009
“Shine & Click” Photo-Induced Interfacial Unmasking of Strained Alkynes on Small Water-Soluble Gold Nanoparticles journal November 2016
Copper(II) Complexes of Phenanthroline and Histidine Containing Ligands: Synthesis, Characterization and Evaluation of their DNA Cleavage and Cytotoxic Activity journal November 2016
Heteroleptic Copper Photosensitizers: Why an Extended π-System Does Not Automatically Lead to Enhanced Hydrogen Production journal December 2016
Probing the Diphosphine Ligand’s Impact within Heteroleptic, Visible-Light-Absorbing Cu(I) Photosensitizers for Solar Fuels Production journal December 2018
Redox-coupled structural changes in copper chemistry: Implications for atom transfer catalysis journal November 2018
Heteroleptic diimine copper(i) complexes with large extinction coefficients: synthesis, quantum chemistry calculations and physico-chemical properties journal January 2013
Retardation of Back Electron Transfer in Photoredox Processes by the Addition of Surfactant Micelles journal August 1985
Highly Efficient Photocatalytic Water Reduction with Robust Iridium(III) Photosensitizers Containing Arylsilyl Substituents journal September 2013
[Cu(P^P)(N^N)][PF 6 ] compounds with bis(phosphane) and 6-alkoxy, 6-alkylthio, 6-phenyloxy and 6-phenylthio-substituted 2,2′-bipyridine ligands for light-emitting electrochemical cells journal January 2018
X-ray absorption near-edge spectroscopy in bioinorganic chemistry: Application to M–O2 systems journal January 2013
Photocatalytic Hydrogen Production with Copper Photosensitizer-Titanium Dioxide Composites journal August 2013
Ultrafast Excited-State Dynamics of Copper(I) Complexes journal February 2015
Designing Highly Efficient Cu I Photosensitizers for Photocatalytic H 2 Evolution from Water journal April 2017
New luminescent copper(I) complexes with extended π-conjugation journal February 2018
Homogeneous photocatalytic production of hydrogen from water by a bioinspired [Fe 2 S 2 ] catalyst with high turnover numbers journal January 2010
Mechanistic Evaluation of a Nickel Proton Reduction Catalyst Using Time-Resolved X-ray Absorption Spectroscopy journal September 2016
Solution and solid-state conformations of 1,5-pyridine and 1,5-phenanthroline-bridged p-tert-butylcalix[8]arene derivatives journal September 2013
Biomimetic and Microbial Approaches to Solar Fuel Generation journal December 2009
Neutral copper( i ) dipyrrin complexes and their use as sensitizers in dye-sensitized solar cells journal January 2014
Thermally Activated Delayed Fluorescence (TADF) and Enhancing Photoluminescence Quantum Yields of [Cu I (diimine)(diphosphine)] + Complexes—Photophysical, Structural, and Computational Studies journal July 2014
Fast synthesis of a tris(N,N-diimine)chromium( iii ) complex by a microwave-assisted approach journal January 2014
Projection, size factors, and reaction dynamics of colloidal redox catalysts mediating light induced hydrogen evolution from water journal November 1979
Oxygen Gas Sensing by Luminescence Quenching in Crystals of Cu(xantphos)(phen) + Complexes journal October 2010
Heteroleptic Copper(I) Complexes Prepared from Phenanthroline and Bis-Phosphine Ligands journal September 2013
Estimation of excited-state redox potentials by electron-transfer quenching. Application of electron-transfer theory to excited-state redox processes journal August 1979
Synthesis, Structure, and Photoinduced Catalysis of [FeFe]-Hydrogenase Active Site Models Covalently Linked to a Porphyrin or Metalloporphyrin Moiety journal July 2009
A distorted tetrahedral copper(II) complex of a tetradentate Schiff base ligand journal March 1979
Reductive Side of Water Splitting in Artificial Photosynthesis: New Homogeneous Photosystems of Great Activity and Mechanistic Insight journal November 2010
Rapid Excited-State Structural Reorganization Captured by Pulsed X-rays journal September 2002
MLCT State Structure and Dynamics of a Copper(I) Diimine Complex Characterized by Pump−Probe X-ray and Laser Spectroscopies and DFT Calculations journal June 2003
Heteroleptic [Cu(P^P)(N^N)][PF6] Compounds with Isomeric Dibromo-1,10-Phenanthroline Ligands journal January 2020
Design of a Long-Lifetime, Earth-Abundant, Aqueous Compatible Cu(I) Photosensitizer Using Cooperative Steric Effects journal July 2013
Elucidating the Nature of the Excited State of a Heteroleptic Copper Photosensitizer by using Time-Resolved X-ray Absorption Spectroscopy journal April 2018
Towards Artificial Leaves for Solar Hydrogen and Fuels from Carbon Dioxide journal March 2012
Three-Dimensional Local Structure of Photoexcited Cu Diimine Complex Refined by Quantitative XANES Analysis journal June 2008
The Future of Energy Supply: Challenges and Opportunities journal January 2007
Powering the planet: Chemical challenges in solar energy utilization journal October 2006
Electronic Structures of Metal Sites in Proteins and Models:  Contributions to Function in Blue Copper Proteins journal February 2004
Isocyanid-Komplexe von Cr 0 , Mo 0 und W 0 als Leuchtstoffe und Photosensibilisatoren mit langlebigen angeregten Zuständen journal April 2017
Energy alternatives: Electricity without carbon journal August 2008
Homogeneous Photocatalytic Hydrogen Production Using π-Conjugated Platinum(II) Arylacetylide Sensitizers journal February 2011
Powering the future of molecular artificial photosynthesis with light-harvesting metallosupramolecular dye assemblies journal January 2013
Highly Efficient Photocatalytic Water Reduction with Robust Iridium(III) Photosensitizers Containing Arylsilyl Substituents journal September 2013
Advances in the light conversion properties of Cu(I)-based photosensitizers journal November 2014
Coherent Nuclear Dynamics in Ultrafast Photoinduced Structural Change of Bis(diimine)copper(I) Complex journal May 2011
XANES spectra of copper(II) complexes: correlation of the intensity of the 1s .fwdarw. 3d transition and the shape of the complex journal February 1992
K- and L-edge X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS) determination of differential orbital covalency (DOC) of transition metal sites journal August 2017
Einblicke in den Mechanismus der photokatalytischen Wasserreduktion durch DFT-gestützte In-situ-EPR/Raman-Spektroskopie journal August 2011
Making Hydrogen from Water Using a Homogeneous System Without Noble Metals journal July 2009
Metal-complex chromophores for solar hydrogen generation journal January 2017
Solvent-Induced Luminescence Quenching: Static and Time-Resolved X-Ray Absorption Spectroscopy of a Copper(I) Phenanthroline Complex journal May 2013
Solar Electricity and Solar Fuels: Status and Perspectives in the Context of the Energy Transition journal November 2015
A pentanuclear iron catalyst designed for water oxidation journal February 2016
Interplays of excited state structures and dynamics in copper(I) diimine complexes: Implications and perspectives journal January 2015
Tracking the Structural and Electronic Configurations of a Cobalt Proton Reduction Catalyst in Water journal August 2016
Electron Transfer by Copper Centers journal February 2004
σ-Hammett parameter: a strategy to enhance both photo- and electro-luminescence features of heteroleptic copper( i ) complexes journal January 2017
Photocatalytic CO 2 Reduction Using Cu(I) Photosensitizers with a Fe(II) Catalyst journal March 2016
Photoinduced Structural Dynamics of Molecular Systems Mapped by Time-Resolved X-ray Methods journal May 2017
Review of photocatalytic water-splitting methods for sustainable hydrogen production: Review: photocatalysis for sustainable hydrogen journal May 2016
Recent developments in hydrogen evolving molecular cobalt(II)–polypyridyl catalysts journal December 2015
Photocatalytic Water Reduction with Copper-Based Photosensitizers: A Noble-Metal-Free System journal October 2012
Using Scanning Electrochemical Microscopy to Examine Copper(I) Sensitizers for Dye-Sensitized Solar Cells journal May 2014
Redox Properties of Copper(I) Complex Bearing 4,7-Diphenyl-2,9-dimethyl-1,10-phenanthroline and 1,4-Bis(diphenylphosphino)butane Ligands and Effects of Light in the Presence of Chloroform journal March 2017
Influence of Ligand Substitution on Excited State Structural Dynamics in Cu(I) Bisphenanthroline Complexes journal November 2010
Substitution-Controlled Excited State Processes in Heteroleptic Copper(I) Photosensitizers Used in Hydrogen Evolving Systems journal September 2014
Dye-Sensitized Solar Cell Studies of a Donor-Appended Bis(2,9-dimethyl-1,10-phenanthroline) Cu(I) Dye Paired with a Cobalt-Based Mediator journal February 2013
Understanding and exploiting long-lived near-infrared emission of a molecular ruby journal March 2018
A Noble-Metal-Free System for Photocatalytic Hydrogen Production from Water journal October 2013
Eisencarbonyle: effiziente Katalysatoren für die lichtgetriebene Wasserstofferzeugung aus Wasser journal November 2009
Hydrogen Generation by Visible Light Irradiation of Aqueous Solutions of Metal Complexes. An approach to the photochemical conversion and storage of solar energy journal June 1979
Visible Light-Driven Hydrogen Production from Aqueous Protons Catalyzed by Molecular Cobaloxime Catalysts journal June 2009
Vibrational Energy Flow Controls Internal Conversion in a Transition Metal Complex journal September 2010
Transition Metal Complexes with 1-Adamantoyl Hydrazones - Cytotoxic Copper(II) Complexes of Tri- and Tetradentate Pyridine Chelators Containing an Adamantane Ring System: Transition Metal Complexes with 1-Adamantoyl Hydrazones journal January 2015
X-ray absorption edge determination of the oxidation state and coordination number of copper. Application to the type 3 site in Rhus vernicifera laccase and its reaction with oxygen journal October 1987
General Scheme for Oxidative Quenching of a Copper Bis-Phenanthroline Photosensitizer for Light-Driven Hydrogen Production journal May 2016
Photocatalytic Hydrogen Generation from Water with Iron Carbonyl Phosphine Complexes: Improved Water Reduction Catalysts and Mechanistic Insights journal April 2011
Photocatalytic Water Reduction with Copper-Based Photosensitizers: A Noble-Metal-Free System journal October 2012
Photochemistry and photophysics of Ru(II)polypyridine complexes in the Bologna group. From early studies to recent developments journal January 2001
Light-Driven Hydrogen Generation: Efficient Iron-Based Water Reduction Catalysts journal December 2009
A Multiplet Analysis of Fe K-Edge 1s → 3d Pre-Edge Features of Iron Complexes journal July 1997
Copper Photosensitizers Containing P^N Ligands and Their Influence on Photoactivity and Stability journal November 2017
Photocatalytic hydrogen production journal January 2011
Heteroleptic bis-diimine copper(I) complexes for applications in solar energy conversion journal January 2016
Light Induced Redox Reactions of Water Soluble Porphyrins, sensitization of hydrogen generation from water by zincporphyrin derivatives journal March 1980
The role of the bridging ligand in photocatalytic supramolecular assemblies for the reduction of protons and carbon dioxide journal August 2012
Die Zukunft der Energieversorgung – Herausforderungen und Chancen journal January 2007
Heteroleptic diimine–diphosphine Cu(I) complexes as an alternative towards noble-metal based photosensitizers: Design strategies, photophysical properties and perspective applications journal February 2018
Imidazo-Phenanthroline Ligands as a Convenient Modular Platform for the Preparation of Heteroleptic Cu(I) Photosensitizers journal December 2018


Figures / Tables (11)