Host-Guest Engineering of Layered Double Hydroxides towards Efficient Oxygen Evolution Reaction: Recent Advances and Perspectives

Ce-Doped NiFe-Layered Double Hydroxide Ultrathin Nanosheets/Nanocarbon Hierarchical Nanocomposite as an Efficient Oxygen Evolution Catalyst

(2018) Huajie Xu et al.   ACS Applied Materials & Interfaces

NiFe-Layered Double Hydroxide Nanosheet Arrays Supported on Carbon Cloth for Highly Sensitive Detection of Nitrite

(2018) Yue Ma et al.   ACS Applied Materials & Interfaces

Bifunctional Heterostructure Assembly of NiFe LDH Nanosheets on NiCoP Nanowires for Highly Efficient and Stable Overall Water Splitting

(2018) Haojie Zhang et al.   ADVANCED FUNCTIONAL MATERIALS

Hierarchical CuCo 2 S 4 @NiMn-layered double hydroxide core-shell hybrid arrays as electrodes for supercapacitors

(2018) Jinghuang Lin et al.   CHEMICAL ENGINEERING JOURNAL

Electrosynthesis of Conducting Polymers in Lecithin Liquid Crystal Reaction Field

(2018) Kohei Yamabe et al.   FIBERS AND POLYMERS

One-step electrosynthesis of cadmium/aluminum layered double hydroxides composite as electrochemical probe for voltammetric detection of anthracene

(2018) Xueying Qiao et al.   JOURNAL OF ELECTROANALYTICAL CHEMISTRY

Single-Atom Au/NiFe Layered Double Hydroxide Electrocatalyst: Probing the Origin of Activity for Oxygen Evolution Reaction

(2018) Jingfang Zhang et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Fast formation of single-unit-cell-thick and defect-rich layered double hydroxide nanosheets with highly enhanced oxygen evolution reaction for water splitting

(2018) Rui Gao et al.   Nano Research

Sub-3 nm Ultrafine Monolayer Layered Double Hydroxide Nanosheets for Electrochemical Water Oxidation

(2018) Yufei Zhao et al.   Advanced Energy Materials

Highly Active Trimetallic NiFeCr Layered Double Hydroxide Electrocatalysts for Oxygen Evolution Reaction

(2018) Yang Yang et al.   Advanced Energy Materials

Integrated Flexible Electrode for Oxygen Evolution Reaction: Layered Double Hydroxide Coupled with Single-Walled Carbon Nanotubes Film

(2018) Hengjie Liu et al.   ACS Sustainable Chemistry & Engineering

A layered Na1−xNiyFe1−yO2 double oxide oxygen evolution reaction electrocatalyst for highly efficient water-splitting

(2017) Baicheng Weng et al.   Energy & Environmental Science

Enhanced electrocatalytic properties of electrodeposited amorphous cobalt-nickel hydroxide nanosheets on nickel foam by the formation of nickel nanocones for the oxygen evolution reaction

(2017) Sanghwa Yoon et al.   JOURNAL OF ALLOYS AND COMPOUNDS

Electrosynthesis of neodymium oxide nanorods and its nanocomposite with conjugated conductive polymer as a hybrid electrode material for highly capacitive pseudocapacitors

(2017) Hamid Mohammad Shiri et al.   JOURNAL OF COLLOID AND INTERFACE SCIENCE

Ultrafast and large scale preparation of superior catalyst for oxygen evolution reaction

(2017) Xianqing Tian et al.   JOURNAL OF POWER SOURCES

In-situ intercalation of NiFe LDH materials: An efficient approach to improve electrocatalytic activity and stability for water splitting

(2017) Xiumin Li et al.   JOURNAL OF POWER SOURCES

Phosphorus oxoanion-intercalated layered double hydroxides for high-performance oxygen evolution

(2017) Ma Luo et al.   Nano Research

Hierarchically scaffolded CoP/CoP2 nanoparticles: controllable synthesis and their application as a well-matched bifunctional electrocatalyst for overall water splitting

(2017) Wan Li et al.   Nanoscale

NiMn layered double hydroxides as efficient electrocatalysts for the oxygen evolution reaction and their application in rechargeable Zn–air batteries

(2017) Afriyanti Sumboja et al.   Nanoscale

A Cost-Efficient Bifunctional Ultrathin Nanosheets Array for Electrochemical Overall Water Splitting

(2017) Ying Zhang et al.   Small

First-Row Transition Metal Based Catalysts for the Oxygen Evolution Reaction under Alkaline Conditions: Basic Principles and Recent Advances

(2017) Fei Lu et al.   Small

Photogenerated Carriers Boost Water Splitting Activity over Transition-Metal/Semiconducting Metal Oxide Bifunctional Electrocatalysts

(2017) Xiling Han et al.   ACS Catalysis

NiFe Layered Double Hydroxide Nanoparticles on Co,N-Codoped Carbon Nanoframes as Efficient Bifunctional Catalysts for Rechargeable Zinc-Air Batteries

(2017) Qing Wang et al.   Advanced Energy Materials

Ultrathin Co–Fe hydroxide nanosheet arrays for improved oxygen evolution during water splitting

(2017) Tingting Zhou et al.   RSC Advances

A Highly Active CoFe Layered Double Hydroxide for Water Splitting

(2017) Lanxiang Feng et al.   ChemPlusChem

Influence on the Electrocatalytic Water Oxidation of M2+/M3+ Cation Arrangement in NiFe LDH: Experimental and Theoretical DFT Evidences

(2017) Ariel Guzmán-Vargas et al.   Electrocatalysis

A review of nanocarbons in energy electrocatalysis: Multifunctional substrates and highly active sites

(2017) Cheng Tang et al.   Journal of Energy Chemistry

Fe incorporated α-Co(OH)2 nanosheets with remarkably improved activity towards the oxygen evolution reaction

(2017) Haiyan Jin et al.   Journal of Materials Chemistry A

A general approach to synthesise ultrathin NiM (M = Fe, Co, Mn) hydroxide nanosheets as high-performance low-cost electrocatalysts for overall water splitting

(2017) Xiuhui Sun et al.   Journal of Materials Chemistry A

Two-dimensional ultrathin arrays of CoP: Electronic modulation toward high performance overall water splitting

(2017) Lei Zhou et al.   Nano Energy

Photo-assisted synthesis of zinc-iron layered double hydroxides/TiO 2 nanoarrays toward highly-efficient photoelectrochemical water splitting

(2017) Ruikang Zhang et al.   Nano Energy

Engineering Pyrite-Type Bimetallic Ni-Doped CoS2 Nanoneedle Arrays over a Wide Compositional Range for Enhanced Oxygen and Hydrogen Electrocatalysis with Flexible Property

(2017) Guowei He et al.   Catalysts

In situ growth of ultrathin Ni–Fe LDH nanosheets for high performance oxygen evolution reaction

(2017) Haidong Yang et al.   Inorganic Chemistry Frontiers

Defect-Rich Ultrathin Cobalt–Iron Layered Double Hydroxide for Electrochemical Overall Water Splitting

(2016) Peng Fei Liu et al.   ACS Applied Materials & Interfaces

Vertically Aligned FeOOH/NiFe Layered Double Hydroxides Electrode for Highly Efficient Oxygen Evolution Reaction

(2016) Jun Chi et al.   ACS Applied Materials & Interfaces

Hierarchical NiFe Layered Double Hydroxide Hollow Microspheres with Highly-Efficient Behavior toward Oxygen Evolution Reaction

(2016) Cong Zhang et al.   ACS Applied Materials & Interfaces

Atomically Thin MoS2: A Versatile Nongraphene 2D Material

(2016) Y. P. Venkata Subbaiah et al.   ADVANCED FUNCTIONAL MATERIALS

Efficient Electrochemical and Photoelectrochemical Water Splitting by a 3D Nanostructured Carbon Supported on Flexible Exfoliated Graphene Foil

(2016) Yang Hou et al.   ADVANCED MATERIALS

Transition-Metal (Co, Ni, and Fe)-Based Electrocatalysts for the Water Oxidation Reaction

(2016) Lei Han et al.   ADVANCED MATERIALS

Hierarchical CoNi-Sulfide Nanosheet Arrays Derived from Layered Double Hydroxides toward Efficient Hydrazine Electrooxidation

(2016) Lei Zhou et al.   ADVANCED MATERIALS

NiCo-layered double hydroxides vertically assembled on carbon fiber papers as binder-free high-active electrocatalysts for water oxidation

(2016) Chang Yu et al.   CARBON

Oxygen and hydrogen evolution reactions on Ru, RuO 2 , Ir, and IrO 2 thin film electrodes in acidic and alkaline electrolytes: A comparative study on activity and stability

(2016) Serhiy Cherevko et al.   CATALYSIS TODAY

Ternary NiFeMn layered double hydroxides as highly-efficient oxygen evolution catalysts

(2016) Zhiyi Lu et al.   CHEMICAL COMMUNICATIONS

Measurement Techniques for the Study of Thin Film Heterogeneous Water Oxidation Electrocatalysts

(2016) Michaela Burke Stevens et al.   CHEMISTRY OF MATERIALS

Iron-Doped Nickel Phosphate as Synergistic Electrocatalyst for Water Oxidation

(2016) Yibing Li et al.   CHEMISTRY OF MATERIALS

Synergistic Effect of Cobalt and Iron in Layered Double Hydroxide Catalysts for the Oxygen Evolution Reaction

(2016) Fengkai Yang et al.   ChemSusChem

Effect of interlayer anions on [NiFe]-LDH nanosheet water oxidation activity

(2016) B. M. Hunter et al.   Energy & Environmental Science

TiO2/graphene/NiFe-layered double hydroxide nanorod array photoanodes for efficient photoelectrochemical water splitting

(2016) Fanyu Ning et al.   Energy & Environmental Science

Versatile nanoporous bimetallic phosphides towards electrochemical water splitting

(2016) Yongwen Tan et al.   Energy & Environmental Science

Vertically oriented cobalt selenide/NiFe layered-double-hydroxide nanosheets supported on exfoliated graphene foil: an efficient 3D electrode for overall water splitting

(2016) Yang Hou et al.   Energy & Environmental Science

Ultra-large scale synthesis of Co–Ni layered double hydroxides monolayer nanosheets by a solvent-free bottom-up strategy

(2016) Wenle Ma et al.   JOURNAL OF ALLOYS AND COMPOUNDS

Oxygen Evolution Reaction Dynamics, Faradaic Charge Efficiency, and the Active Metal Redox States of Ni–Fe Oxide Water Splitting Electrocatalysts

(2016) Mikaela Görlin et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Highly Active and Stable Catalysts of Phytic Acid-Derivative Transition Metal Phosphides for Full Water Splitting

(2016) Gong Zhang et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Development of efficient electrocatalysts via molecular hybridization of NiMn layered double hydroxide nanosheets and graphene

(2016) Wei Ma et al.   Nanoscale

Nickel–vanadium monolayer double hydroxide for efficient electrochemical water oxidation

(2016) Ke Fan et al.   Nature Communications

Uncovering the Nature of Active Species of Nickel Phosphide Catalysts in High-Performance Electrochemical Overall Water Splitting

(2016) Prashanth W. Menezes et al.   ACS Catalysis

NiFe-Based (Oxy)hydroxide Catalysts for Oxygen Evolution Reaction in Non-Acidic Electrolytes

(2016) Fabio Dionigi et al.   Advanced Energy Materials

Rational composition and structural design of in situ grown nickel-based electrocatalysts for efficient water electrolysis

(2016) Xiangye Liu et al.   Journal of Materials Chemistry A

Rational design of cobalt–chromium layered double hydroxide as a highly efficient electrocatalyst for water oxidation

(2016) Chenlong Dong et al.   Journal of Materials Chemistry A

Dual-valence nickel nanosheets covered with thin carbon as bifunctional electrocatalysts for full water splitting

(2016) Wang Xi et al.   Journal of Materials Chemistry A

Layer-by-layer assembly of exfoliated layered double hydroxide nanosheets for enhanced electrochemical oxidation of water

(2016) Cong Zhang et al.   Journal of Materials Chemistry A

Nanostructured catalysts for electrochemical water splitting: current state and prospects

(2016) Xiumin Li et al.   Journal of Materials Chemistry A

Guest–host modulation of multi-metallic (oxy)hydroxides for superb water oxidation

(2016) Cheng Tang et al.   Journal of Materials Chemistry A

A flexible all-solid-state micro-supercapacitor based on hierarchical CuO@layered double hydroxide core–shell nanoarrays

(2016) Zhenhua Li et al.   Nano Energy

Mixed-Metal Semiconductor Anodes for Electrochemical Water Splitting and Reactive Chlorine Species Generation: Implications for Electrochemical Wastewater Treatment

(2016) Su Ryu et al.   Catalysts

A Superlattice of Alternately Stacked Ni–Fe Hydroxide Nanosheets and Graphene for Efficient Splitting of Water

(2015) Wei Ma et al.   ACS Nano

Spatially Confined Hybridization of Nanometer-Sized NiFe Hydroxides into Nitrogen-Doped Graphene Frameworks Leading to Superior Oxygen Evolution Reactivity

(2015) Cheng Tang et al.   ADVANCED MATERIALS

Superaerophobic Electrodes for Direct Hydrazine Fuel Cells

(2015) Zhiyi Lu et al.   ADVANCED MATERIALS

Recent Progress in Cobalt-Based Heterogeneous Catalysts for Electrochemical Water Splitting

(2015) Jiahai Wang et al.   ADVANCED MATERIALS

Co intake mediated formation of ultrathin nanosheets of transition metal LDH—an advanced electrocatalyst for oxygen evolution reaction

(2015) Xia Long et al.   CHEMICAL COMMUNICATIONS

Layered double hydroxides toward electrochemical energy storage and conversion: design, synthesis and applications

(2015) Mingfei Shao et al.   CHEMICAL COMMUNICATIONS

Surface chemical-modification for engineering the intrinsic physical properties of inorganic two-dimensional nanomaterials

(2015) Yuqiao Guo et al.   CHEMICAL SOCIETY REVIEWS

Oxygen Evolution Reaction Electrocatalysis on Transition Metal Oxides and (Oxy)hydroxides: Activity Trends and Design Principles

(2015) Michaela S. Burke et al.   CHEMISTRY OF MATERIALS

Methylviologen mediated electrochemical reduction of AgCl—A new route to produce a silica core/Ag shell nanocomposite material in solution

(2015) Vitaliy V. Yanilkin et al.   ELECTROCHEMISTRY COMMUNICATIONS

Novel electrodeposition media to synthesize CoNi-Pt Core@Shell stable mesoporous nanorods with very high active surface for methanol electro-oxidation

(2015) A. Serrà et al.   ELECTROCHIMICA ACTA

One-Dimensional Core–Shell Architecture Composed of Silver Nanowire@Hierarchical Nickel–Aluminum Layered Double Hydroxide Nanosheet as Advanced Electrode Materials for Pseudocapacitor

(2015) Shuxing Wu et al.   Journal of Physical Chemistry C

Nickel–cobalt layered double hydroxide nanosheets as high-performance electrocatalyst for oxygen evolution reaction

(2015) Jing Jiang et al.   JOURNAL OF POWER SOURCES

Operando Analysis of NiFe and Fe Oxyhydroxide Electrocatalysts for Water Oxidation: Detection of Fe4+ by Mössbauer Spectroscopy

(2015) Jamie Y. C. Chen et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Surface Interrogation Scanning Electrochemical Microscopy of Ni1–xFexOOH (0 < x < 0.27) Oxygen Evolving Catalyst: Kinetics of the “fast” Iron Sites

(2015) Hyun S. Ahn et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Stable Cobalt Nanoparticles and Their Monolayer Array as an Efficient Electrocatalyst for Oxygen Evolution Reaction

(2015) Liheng Wu et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Molecular Insight in Structure and Activity of Highly Efficient, Low-Ir Ir–Ni Oxide Catalysts for Electrochemical Water Splitting (OER)

(2015) Tobias Reier et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

In Situ Formation of Cobalt Oxide Nanocubanes as Efficient Oxygen Evolution Catalysts

(2015) Gregory S. Hutchings et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Re-entrant Lithium Local Environments and Defect Driven Electrochemistry of Li- and Mn-Rich Li-Ion Battery Cathodes

(2015) Fulya Dogan et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Identification of Highly Active Fe Sites in (Ni,Fe)OOH for Electrocatalytic Water Splitting

(2015) Daniel Friebel et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Hydrothermal Continuous Flow Synthesis and Exfoliation of NiCo Layered Double Hydroxide Nanosheets for Enhanced Oxygen Evolution Catalysis

(2015) Hanfeng Liang et al.   NANO LETTERS

Atomically thin two-dimensional organic-inorganic hybrid perovskites

(2015) L. Dou et al.   SCIENCE

Hierarchical Conducting Polymer@Clay Core-Shell Arrays for Flexible All-Solid-State Supercapacitor Devices

(2015) Mingfei Shao et al.   Small

Fast electrosynthesis of Fe-containing layered double hydroxide arrays toward highly efficient electrocatalytic oxidation reactions

(2015) Zhenhua Li et al.   Chemical Science

Charge-Transfer Effects in Ni–Fe and Ni–Fe–Co Mixed-Metal Oxides for the Alkaline Oxygen Evolution Reaction

(2015) Michael K. Bates et al.   ACS Catalysis

In situ growth of spinel CoFe2O4 nanoparticles on rod-like ordered mesoporous carbon for bifunctional electrocatalysis of both oxygen reduction and oxygen evolution

(2015) Pengxi Li et al.   Journal of Materials Chemistry A

Delineating the roles of Co3O4 and N-doped carbon nanoweb (CNW) in bifunctional Co3O4/CNW catalysts for oxygen reduction and oxygen evolution reactions

(2015) Siyang Liu et al.   Journal of Materials Chemistry A

Dual-sized NiFe layered double hydroxides in situ grown on oxygen-decorated self-dispersal nanocarbon as enhanced water oxidation catalysts

(2015) Xiaolin Zhu et al.   Journal of Materials Chemistry A

One-step synthesis of zinc–cobalt layered double hydroxide (Zn–Co-LDH) nanosheets for high-efficiency oxygen evolution reaction

(2015) Chen Qiao et al.   Journal of Materials Chemistry A

Ultrathin nickel–iron layered double hydroxide nanosheets intercalated with molybdate anions for electrocatalytic water oxidation

(2015) Na Han et al.   Journal of Materials Chemistry A

Carbon Quantum Dot/NiFe Layered Double-Hydroxide Composite as a Highly Efficient Electrocatalyst for Water Oxidation

(2014) Di Tang et al.   ACS Applied Materials & Interfaces

A Strongly Coupled Graphene and FeNi Double Hydroxide Hybrid as an Excellent Electrocatalyst for the Oxygen Evolution Reaction

(2014) Xia Long et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Three-dimensional NiFe layered double hydroxide film for high-efficiency oxygen evolution reaction

(2014) Zhiyi Lu et al.   CHEMICAL COMMUNICATIONS

Redox catalysis in organic electrosynthesis: basic principles and recent developments

(2014) Robert Francke et al.   CHEMICAL SOCIETY REVIEWS

A high-performance reduced graphene oxide/ZnCo layered double hydroxide electrocatalyst for efficient water oxidation

(2014) Di Tang et al.   DALTON TRANSACTIONS

An exceptionally facile method to produce layered double hydroxides on a conducting substrate and their application for solar water splitting without an external bias

(2014) Seungho Cho et al.   Energy & Environmental Science

Ultrathin Cobalt–Manganese Layered Double Hydroxide Is an Efficient Oxygen Evolution Catalyst

(2014) Fang Song et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Nickel–Iron Oxyhydroxide Oxygen-Evolution Electrocatalysts: The Role of Intentional and Incidental Iron Incorporation

(2014) Lena Trotochaud et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

A mini review of NiFe-based materials as highly active oxygen evolution reaction electrocatalysts

(2014) Ming Gong et al.   Nano Research

Hierarchical construction of an ultrathin layered double hydroxide nanoarray for highly-efficient oxygen evolution reaction

(2014) Qiu Yang et al.   Nanoscale

Exfoliation of layered double hydroxides for enhanced oxygen evolution catalysis

(2014) Fang Song et al.   Nature Communications

Ionothermal synthesis of cobalt iron layered double hydroxides (LDHs) with expanded interlayer spacing as advanced electrochemical materials

(2014) X. Ge et al.   Journal of Materials Chemistry A

Co3O4@layered double hydroxide core/shell hierarchical nanowire arrays for enhanced supercapacitance performance

(2014) Fanyu Ning et al.   Nano Energy

Defect Chemistry of Oxide Nanomaterials with High Surface Area: Ordered Mesoporous Thin Films of the Oxygen Storage Catalyst CeO2–ZrO2

(2013) Pascal Hartmann et al.   ACS Nano

An Advanced Ni–Fe Layered Double Hydroxide Electrocatalyst for Water Oxidation

(2013) Ming Gong et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

NiTi-Layered double hydroxides nanosheets as efficient photocatalysts for oxygen evolution from water using visible light

(2013) Yufei Zhao et al.   Chemical Science

Advanced zinc-air batteries based on high-performance hybrid electrocatalysts

(2013) Yanguang Li et al.   Nature Communications

Hierarchical Nanocomposites Derived from Nanocarbons and Layered Double Hydroxides - Properties, Synthesis, and Applications

(2012) Meng-Qiang Zhao et al.   ADVANCED FUNCTIONAL MATERIALS

A temperature sensor based on CdTe quantum dots–layered double hydroxide ultrathin films via layer-by-layer assembly

(2012) Ruizheng Liang et al.   CHEMICAL COMMUNICATIONS

Recent Advances in the Synthesis and Application of Layered Double Hydroxide (LDH) Nanosheets

(2012) Qiang Wang et al.   CHEMICAL REVIEWS

Synthesis and Activities of Rutile IrO2 and RuO2 Nanoparticles for Oxygen Evolution in Acid and Alkaline Solutions

(2012) Youngmin Lee et al.   Journal of Physical Chemistry Letters

Large-Scale Exfoliation of Inorganic Layered Compounds in Aqueous Surfactant Solutions

(2011) Ronan J. Smith et al.   ADVANCED MATERIALS

Preparation of Fe3O4@SiO2@Layered Double Hydroxide Core–Shell Microspheres for Magnetic Separation of Proteins

(2011) Mingfei Shao et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Layer-by-Layer Engineered Co–Al Hydroxide Nanosheets/Graphene Multilayer Films as Flexible Electrode for Supercapacitor

(2011) Xinyi Dong et al.   LANGMUIR

Layer-by-layer assembly of layered double hydroxide/cobalt phthalocyanine ultrathin film and its application for sensors

(2010) Jingbin Han et al.   JOURNAL OF MATERIALS CHEMISTRY

One-Step Synthesis of Organic LDH and Its Comparison with Regeneration and Anion Exchange Method

(2009) De-Yi Wang et al.   CHEMISTRY OF MATERIALS

Iron Oxide-Based Nanotube Arrays Derived from Sacrificial Template-Accelerated Hydrolysis: Large-Area Design and Reversible Lithium Storage

(2009) Jinping Liu et al.   CHEMISTRY OF MATERIALS

Heterogeneous Ultrathin Films of Poly(vinyl alcohol)/Layered Double Hydroxide and Montmorillonite Nanosheets via Layer-by-Layer Assembly

(2009) Shu Huang et al.   JOURNAL OF PHYSICAL CHEMISTRY B

Electrolyte-Dependent Electrosynthesis and Activity of Cobalt-Based Water Oxidation Catalysts

(2009) Yogesh Surendranath et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Heterogeneous ultrathin films fabricated by alternate assembly of exfoliated layered double hydroxides and polyanion

(2008) Jing Bin Han et al.   CHEMICAL COMMUNICATIONS