Themed collection Most popular 2021 analytical chemistry articles, 2021
DNA nanostructure-based nucleic acid probes: construction and biological applications
In recent years, DNA has been widely noted as a kind of material that can be used to construct building blocks for biosensing, in vivo imaging, drug development, and disease therapy because of its advantages of good biocompatibility and programmable properties.
Fluorescent small organic probes for biosensing
Small-molecule based fluorescent probes are increasingly important for the detection and imaging of biological signaling molecules due to their simplicity, high selectivity and sensitivity, whilst being non-invasive, and suitable for real-time analysis of living systems.
Near-infrared fluorescent molecular probes for imaging and diagnosis of nephro-urological diseases
Near-infrared fluorescent molecular probes with improved imaging depth and optimized biodistribution have been reviewed, showing great potential for diagnosis of nephro-urological diseases.
Activatable fluorescence sensors for in vivo bio-detection in the second near-infrared window
Fluorescence imaging in the second near-infrared (NIR-II, 1000–1700 nm) window has exhibited advantages of high optical resolution at deeper penetration (ca. 5–20 mm) in bio-tissues owing to the reduced photon scattering and tissue autofluorescence.
Near-infrared fluorescent probes: a next-generation tool for protein-labeling applications
This minireview describes the development of NIR chemical probes for various protein-tag systems.
Structural and process controls of AIEgens for NIR-II theranostics
Structural and process controls of NIR-II AIEgens realize manipulating of radiative (R) and nonradiative (NR) decay for precise theranostics.
Enzyme-activatable fluorescent probes for β-galactosidase: from design to biological applications
This review highlights the molecular design strategy of β-galactosidase-activatable probes from turn-on mode to ratiometric mode, from ACQ to AIE-active probes, from NIR-I to NIR-II imaging and dual-mode of chemo-fluoro-luminescence imaging.
CRISPR technology incorporating amplification strategies: molecular assays for nucleic acids, proteins, and small molecules
Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) and CRISPR-associated (Cas) protein systems revolutionize genome engineering and advance analytical chemistry and diagnostic technology.
Phosphorescent metal complexes as theranostic anticancer agents: combining imaging and therapy in a single molecule
The recent development in phosphorescent iridium, ruthenium and rhenium complexes as theranostic anticancer agents is summarized.
The chronological evolution of small organic molecular fluorescent probes for thiols
The chronological evolution of small organic molecular fluorescent probes for thiols: from separation dependency analysis to cellular specific analysis, what's next?
HSA-Lys-161 covalent bound fluorescent dye for in vivo blood drug dynamic imaging and tumor mapping
HSA lysine-161 covalent bound quinoxaline–coumarin based fluorescent dye realized in situ blood drug concentration monitoring and tumor visualization.
Enzyme-activated near-infrared fluorogenic probe with high-efficiency intrahepatic targeting ability for visualization of drug-induced liver injury
We rationally designed a leucine aminopeptidase (LAP) activated fluorogenic probe hCy-CA-LAP with high hepatocyte-targeting ability for accurate and sensitive imaging of DILI.
Systematic investigation of the aza-Cope reaction for fluorescence imaging of formaldehyde in vitro and in vivo
Systematic investigation of various homoallylamines reveals N-p-methoxybenzyl homoallylamine as the optimal 2-aza-Cope reaction moiety for development of highly efficient formaldehyde fluorescent probes for in vitro and in vivo imaging.
Stress response decay with aging visualized using a dual-channel logic-based fluorescent probe
Rather than tracking aging using the resting state, ROKS, an optical probe, was developed for evaluating the degree of aging dynamically by precisely monitoring the stress response of individuals under stress.
Genetic encoding of a highly photostable, long lifetime fluorescent amino acid for imaging in mammalian cells
Acridonylalanine (Acd) is photostable, with a high quantum yield and long fluorescence lifetime in water. An evolved tRNA synthetase (RS) enables genetic incorporation of Acd in mammalian cells and its use in fluorescence lifetime imaging microscopy.
Turning waste into wealth: facile and green synthesis of carbon nanodots from pollutants and applications to bioimaging
The pollutant reactive red 2 was employed to synthesize fluorescent carbon nanodots allowing biological imaging in vitro and in vivo.
Activation of apoptosis by rationally constructing NIR amphiphilic AIEgens: surmounting the shackle of mitochondrial membrane potential for amplified tumor ablation
In this contribution, based on a “step-by-step” molecular design strategy, a novel NIR amphiphilic AIEgen TPA-S-TPP with a triplet lifetime of 11.43 μs and surmounting the shackle of MMP was successfully fabricated for amplified tumor ablation.
NIR-II cell endocytosis-activated fluorescent probes for in vivo high-contrast bioimaging diagnostics
A Cell Endocytosis-Activated Fluorescent (CEAF) probe triggered by disaggregation and protonation is designed for high contrast in vivo bioimaging and diagnostics in the second near-infrared window (1000–1700 nm).
Strategic engineering of alkyl spacer length for a pH-tolerant lysosome marker and dual organelle localization
A series naphthalimide-based fluorophores were designed by alkyl spacer length engineering to discover a pH-tolerant lysosomal marker. This approach also allows to probe lysosome-related organelles in C. elegans and communication between organelles.
Translating daily COVID-19 screening into a simple glucose test: a proof of concept study
COVID-19 glucose test: translating SARS-CoV-2 detection into a glucose test is achieved by incorporating target-responsive rolling circle amplification and a CRISPR-based collateral cleavage module with a portable glucose meter.
X-ray scattering reveals ion clustering of dilute chromium species in molten chloride medium
Ion clustering of dilute chromium species was unexpectedly revealed in a high-temperature molten chloride salt, challenging several long-held assumptions regarding specific ionic interactions and transport in molten ionic media.
Late-stage functionalisation of alkyne-modified phospha-xanthene dyes: lysosomal imaging using an off–on–off type of pH probe
A series of NIR-emissive phospha-xanthene dyes bearing an ethynyl group are reported. The late-stage functionalisation of the NIR dyes enables creation of multi-functionalised fluorescent probes that can be designed to target organelles of interest.
Synthesis of an AIEgen functionalized cucurbituril for subcellular bioimaging and synergistic photodynamic therapy and supramolecular chemotherapy
An AIEgen-functionalized cucurbituril was synthesized for the first time and spontaneously self-assembled into nanoaggregates in aqueous solutions and allowed subcellular imaging of the lysosome and photodynamic therapy and chemotherapy of cancer.
Rapid and ultrasensitive electrochemical detection of circulating tumor DNA by hybridization on the network of gold-coated magnetic nanoparticles
This study introduces a new electrochemical sensing strategy for the rapid detection of circulating tumor DNA (ctDNA) from whole blood in combination with a network of DNA-Au@MNPs with high sensitivity and excellent selectivity.
Design and synthesis of a ratiometric photoacoustic imaging probe activated by selenol for visual monitoring of pathological progression of autoimmune hepatitis
A ratiometric photoacoustic imaging probe activated by selenol was developed for visual monitoring of pathological progression of autoimmune hepatitis.
Hierarchical dynamics in allostery following ATP hydrolysis monitored by single molecule FRET measurements and MD simulations
We report on a study that combines advanced fluorescence methods with molecular dynamics simulations to cover timescales from nanoseconds to milliseconds for a large protein, the chaperone Hsp90.
Single-molecule fluorescence detection of a tricyclic nucleoside analogue
Fluorescent nucleoside analogue ABN is readily detected at the single-molecule level and retains a quantum yield >50% in duplex DNA oligonucleotides.
Accelerated reactions of amines with carbon dioxide driven by superacid at the microdroplet interface
Microdroplets display distinctive interfacial chemistry, manifested as accelerated reactions relative to those observed for the same reagents in bulk.
Purely organic light-harvesting phosphorescence energy transfer by β-cyclodextrin pseudorotaxane for mitochondria targeted imaging
A new type of purely organic light-harvesting PET supramolecular assembly is constructed with efficient energy transfer and ultrahigh antenna effect. Moreover, the assembly could be used for mitochondria targeted imaging in A549 cancer cells.
All-in-one mitochondria-targeted NIR-II fluorophores for cancer therapy and imaging
Small-molecule subcellular organelle-targeting theranostic probes are crucial for early disease diagnosis and treatment.
About this collection
This specially curated collection pulls together some of the most popular articles from 2021 in the field of analytical chemistry. The collection presents some outstanding contributions to the field, ranging from fluorescent small organic probes for biosensing to electrochemical detection of circulating tumor DNA, and as with all Chemical Science articles – they are all completely free to access and read. We hope you enjoy browsing through this collection.
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