OOIR: Observatory of International Research

Papers

(The H4-Index of Analytical Chemistry is 81. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-04-01 to 2025-04-01.)

Article	Citations
Issue Publication Information	316
¹H Nuclear Magnetic Resonance Spectroscopy-Based Methods for the Quantification of Proteins in Urine	299
Issue Publication Information	261
Issue Editorial Masthead	258
Pioneering Just-in-Time (JIT) Strategy for Accelerating Raman Method Development and Implementation for Biologic Continuous Manufacturing	241
Issue Editorial Masthead	231
Fast Chemical Contrast by X-ray Fluorescence Intensity Ratio Detection	204
Issue Editorial Masthead	189
Issue Publication Information	183
Visualization of Mechanical Force Regulation of Exosome Secretion Using High Time-Spatial Resolution Imaging	181
High Selectivity Fluorescence and Electrochemical Dual-Mode Detection of Glutathione in the Serum of Parkinson’s Disease Model Mice and Humans	166
Comprehensive Approach for Sequential MALDI-MSI Analysis of Lipids, N-Glycans, and Peptides in Fresh-Frozen Rodent Brain Tissues	154
A Single-Chain Peptide Probe Targeting Pathological Collagen for Precise Staging of Hepatic Fibrosis by MR Imaging	154
Calixarene-Based Magnetic Nanosponge Decorating AgNPs for Rapid and Selective Surface-Enhanced Raman Scattering Analysis in Complex Samples	153
Ultrasensitive “Hunter of Target”: Rabbit Monoclonal Antibody-Based Competitive Lateral Flow Immunoassay for Saxitoxin	153
Exploiting the Potential of Spherical PAM Antenna for Enhanced CRISPR-Cas12a: A Paradigm Shift toward a Universal Amplification-Free Nucleic Acid Test Platform	148
Rapid High-Sensitivity Analysis of Methane Clumped Isotopes (Δ¹³CH₃D and Δ¹²CH₂D₂) Using Mid-Infrared Laser Spectroscopy	148
Toward Hyphenated In Situ Infrared and Raman Spectroscopies in Interfacial Electrochemistry	147
PAH-Finder: A Pattern Recognition Workflow for Identification of PAHs and Their Derivatives	146
Michael and Schiff-Base Reactions-Assisted Fluorescence Sensor Based on the MOF Nanosheet Microspheres for the Effective Discrimination and Detection of Hydroquinone and Catechol	142
Unveiling Microscopic Variations during Photodynamic Therapy via Polarity-Responsive Fluorescence Lifetime Imaging	138
Development of a Semiquantitative Barcode Readout Approach for Paper-Based Analytical Devices (PADs) for Enzymatic H₂O₂ and Glucose Detection	136
Altering Lipid A Precursor Ion Types in the Gas Phase for In-Depth Structural Elucidation via Tandem Mass Spectrometry	134
Discovery-Based Analysis for Chemical Trends in Chromatographic Data Sets Using Alteration Analysis and Two-Dimensional Correlation Analysis	132
Microextraction-Single Particle-Inductively Coupled Plasma-Mass Spectrometry for the Direct Analysis of Nanoparticles on Surfaces	131

Welcome to 2025	131
N-Deficient B-Doped g-C₃N₄/CdS Heterojunction-Based PEC-FL Biosensor Assisted by CRISPR-Cas12a System for Ultrasensitive Determination of microRNA	122
New BODIPY-Labeled Antibody for Detection of Foot-and-Mouth Disease Virus	122
Real-Time Analysis of CO₂ Reduction Product Distribution by Synchrotron Vacuum Ultraviolet Photoionization Mass Spectrometry	122
Quantitative Assessment of Retention Mechanisms for Ionized Compounds in Hydrophilic Interaction Chromatography (HILIC)	120
A Fluorescence-Based Temperature-Jump Apparatus for Illustrating Protein Dynamics on the Millisecond Time Scale	120
Primer Exchange Reaction with Cascade RNA Transcription for Highly Specific Detection of Exosomal miRNA and Liver Cancer Diagnosis	120
Reactive Oxygen Species (ROS)–Tyrosinase Cascade-Activated Near-Infrared Fluorescent Probe for the Precise Imaging of Melanoma	117
Bipolar Electrode-Based Precise Manipulation and Selective Electroporation of Cells	117
Single-Cell Array Enhanced Cell Damage Recognition Using Artificial Intelligence for Anticancer Drug Discovery	116
Harnessing crRNA Transformer for Facile and Specific Nucleic Acid Detection	114
Dual-Amplification Single-Particle ICP-MS Strategy Based on Strand Displacement Amplification–CRISPR/Cas12a Amplification for Homogeneous Detection of miRNA	113
Shadow Effect-Triggered Photosensitive Gate of Organic Photoelectrochemical Transistor for Enhanced Biodetection	113
Correction to “Dual-Recognition-Mediated Autocatalytic Amplification Assay for the Subpopulations of PD-L1 Positive Extracellular Vesicle”	113
Issue Publication Information	111
Issue Editorial Masthead	111
A Dual-Structured Chromogenic Enzyme Platform for a Rapid, Sensitive, Durable, and Precise Gene Expression Analysis	109
Rapid Size Determination of Quasispherical Gold Nanoparticles by Electrocatalysis Efficiency-Regulated Electrochemiluminescence	109
Correction to “Comparative Metabolomics and Microbiome Analysis of Ethanol versus OMNImet/gene•GUT Fecal Stabilization”	105
Long-Term Stable and Multifeature Microfluidic Impedance Flow Cytometry Based on a Constricted Channel for Single-Cell Mechanical Phenotyping	104
Identification of Molecular Profile of Cell Membrane via Magnetic Plasmonic Nanoprobe	104
Biophysical and Morphological Cell Features Retrieved by Digital Holographic Microscopy Correlate with Drug-Induced Changes in Cell Migration Behavior	100
Spatial Variations in Hydrogen Bonding Interaction within Polymer Blends Revealed by Infrared Nanoimaging	100
Application of Surface-Enhanced Raman Spectroscopy in Head and Neck Cancer Diagnosis	99
Permeability-Engineered Compartmentation System-Enabled Digital PCR (PECS-dPCR): A Digital Platform toward Multistep Biomolecular Assays	99
Aggregation-Induced Electrochemiluminescence of Silica-Confined Tetraphenylethylene with Pd Nanocube-Loaded Co₃O₄ Nanosheets as a Coreaction Accelerator for Sensitive Bioanalysis	99
Development of a Nanobody–Alkaline Phosphatase Fusion Protein for Detection of SARS-CoV-2 Spike Protein in a Fluorescence Enzyme Immunoassay	97
Advanced SERS Platform for Uniform and Reliable Molecular Detection	96
Advanced Ligase Chain Reaction Strategy to Generate a Circular DNA Walker for Electrochemiluminescent Detection of Single Nucleotide Polymorphism	96
Online Monitoring of the Processing of Traditional Chinese Medicine by Neutral Desorption Atmospheric Pressure Chemical Ionization Mass Spectrometry	96
Manipulating Near-Infrared Absorption via Engineering Anisotropic Plasmonic Spiky Au Nanocubes for the Highly Efficient Dual-Response Immune Detection of T-2 Toxin	96
Cyclic Olefin Copolymer-Based Fixed-Target Sample Delivery Device for Protein X-ray Crystallography	94
Developing Multiple Media Approach to Investigate Reproducible Characteristic VOCs of Lung Cancer Cells	94
Microarray-Based Methodology for Lipid Profiling, Enzymatic Activity, And Binding Assays in Printed Lipid Raft Membranes from Astrocytes and Neurons	94
Supercritical CO₂ and Subcritical H₂O Analysis Instrument: Automated Lipid Analysis for In Situ Planetary Life Detection	92
Issue Editorial Masthead	91
Fast Quantitative LC-MS/MS Determination of Illicit Substances in Solid and Liquid Unknown Seized Samples	91
Isotope Dilution DNA Logic Circuits for Multiple Output and Absolute Quantification	90
Novel Clean-Background Coffee Ring SERS Platform for Trace Toxin Analysis	89
Bidirectionally Favorable Platform: A Dual-Targeting Probe-Encoded Maple Leaf-Type Fluorescent Lateral Flow Immunoassay for Multiple Biomarker Detection	88
Removal of Homogeneous Broadening from ¹H-Detected Multidimensional Solid-State NMR Spectra	88
Near-Infrared Light-Mediated Living Cells Mitochondrial Proteome Proximity Labeling	88
Lignin Monomer Quantification Without Standards: Using Gas Chromatography with Dual Quantitative Carbon Detection and Mass Spectrometry	88
Self-Assembled DNA/SG-I Nanoflower: Versatile Photocatalytic Biosensors for Disease-Related Markers	88
Increased Sensitivity in VOC Detection by Using a Novel Photoinduced Multiple Ionization Mass Spectrometry	87
Network Flow Methods for NMR-Based Compound Identification	85
Endogenous Free-Electron-Involved Coreactant-Free Electrochemiluminescence from Nanoclusters and Its Immunoassay Application	85
CRISPR-Cas12a/Cas13a Multiplex Bioassay for ctDNA and miRNA by Mass Spectrometry	85
Electromembrane Extraction Provides Unprecedented Selectivity for Drugs in Cell Culture Media Used in Organoid and Organ-on-Chip Systems	84
Gut in Tube─Continuous Measurement of Metabolic Crosstalk between Cell Populations in Heterogeneous Samples by NMR Imaging	84

Exploring Single-Probe Single-Cell Mass Spectrometry: Current Trends and Future Directions	84
Time-Dependent Chemiluminescence Fingerprint for Ultrasensitive Trap State Identification in Zinc Gallates	83
Microfluidic Replication and Phenotypic Profiling of Extracellular Vesicles from the Tumor Microenvironment Using Dual-Switch Aptamer Logic Gates	83
Multilevel─Intact, Subunits, and Peptides─Characterization of Antibody-Based Therapeutics by a Single-Column LC–MS Setup	83
Visualization of Oxidative Stress in the Early Stage of Alzheimer’s Disease with a NIR-IIb Probe	82
Computational Super-Resolution: An Odyssey in Harnessing Priors to Enhance Optical Microscopy Resolution	82
Issue Publication Information	81
Deep Learning-Assisted Ultrasensitive Detection of Gold Nanoparticles Using Light Microscopy Images Captured by a Cellphone Camera	81