A novel highly sensitive and selective ‘off-on’ fluorescent probe for thiophenols has been developed by a PET mechanism through rational design.

Real-time monitoring of the contents molecular oxygen (O2) in tumor cells is great significance early diagnosis cancer. At same time, photodynamic therapy (PDT) could be realized by highly toxic singlet (1O2) generated situ during O2 sensing, making it one most promising methods for cancer therapy. Herein, iridium(III) complex cored hyperbranched phosphorescent conjugated polymer dots with negative charges hypoxia imaging and efficient PDT was rationally designed synthesized. The incomplete...

Manipulation of a multi-physical quantity to steer molecular photophysical property is great significance in improving sensing performance. Here, an investigation on how physical rooted the structure induces optical behavior change facilitate ultrasensitive detection ethylenediamine (EDA) performed by varying set thiols. The model molecule consisting thiol with dual-carboxyl exhibits strongest fluorescence, which ascribed electron-donating ability and prompted larger orbital overlap...

Abstract Precise and timely recognition of hazardous chemical substances is great significance for safeguarding human health, ecological environment, public security, etc., especially crucial adopting appropriate disposition measures. Up to now, there remains a practical challenge sensitively detect differentiate organic amines with similar structures intuitive analysis outcomes. Here, unique optical probe two electrophilic sites rapid ultra‐sensitive ratiometric fluorescence detection...

Abstract Ru‐based nanomaterials are promising alternatives to Pt electrocatalysts for green hydrogen energy generation, and crystal phase engineering holds the key unlocking their catalytic potential new heights. However, controllable regulation on Ru‐alloys remains a formidable challenge, unraveling phase‐related electrocatalytic performance is of great significance. Herein, RuNi nanoparticles successfully synthesized with an unconventional face‐centered cubic ( fcc ) via facile route....

Specific recognition with optical responses towards the analytes which are structurally diverse and weak chemical‐active remains a big challenge but is of great significance. Here, zinc(II) enhanced fluorescent emission probe was developed by conjugated modulating metal bridging to specifically synthetic cannabinoids (SCs). The transformed luminescence mechanism from excimer fluorescence resonance energy transfer demonstrated upon integration coordination non‐covalent interactions target...

Specific recognition with optical responses towards the analytes which are structurally diverse and weak chemical‐active remains a big challenge but is of great significance. Here, zinc(II) enhanced fluorescent emission probe was developed by conjugated modulating metal bridging to specifically synthetic cannabinoids (SCs). The transformed luminescence mechanism from excimer fluorescence resonance energy transfer demonstrated upon integration coordination non‐covalent interactions target...

How to modulate the molecular structure finely manipulate sensing performance is of great significance for propelling oriented design optical probe. Here, by taking detection toward amphetamine (AMP) as a model, structural regulation strategy D-π-A probe was proposed reaction activity and response. The optimal screened out from series molecules with an electrophilic site owing its faster response more remarkable emission shift, well desirable specificity. In particular, it found that...

Abstract Launching the intermolecular through‐space charge transfer (TSCT) from a bicomponent assembly for photophysical property manipulation is of great significance in fluorescence probe design. Here, we demonstrate elaborate control droplet evaporation dynamics TSCT can facilitate ultrasensitive detection JWH‐018, representative synthetic cannabinoid. Driven by diverse interactions, probe, and JWH‐018 assemble closely stacked manner to emit strong at 477 nm, ascribing S 2 state. The...

Organic materials are an important class of gain media for fabricating miniaturized lasers because they combine fabrication simplicity with wide spectral coverage and tunability. However, progress toward near-infrared (NIR) organic solid-state has been limited serious nonradiative processes originating from the severe intermolecular interaction in condensed state. Here, we develop a strategy to realize room-temperature NIR microscale through encapsulating dyes into cavities metal–organic...

Luminescent solar concentrators (LSCs) have emerged as a disruptive technology that can potentially enable carbon-neutral buildings. The issues with current LSCs, however, are low optical efficiencies and limited long-term outdoor stability. Here we simultaneously address them by developing an LSC aggregation-induced-emission (AIE) molecules embedded in polydimethylsiloxane (PDMS) matrix. AIE-emitter displayed near unity emission quantum yield when the PDMS apparent absorption-emission...

ADB-type synthetic cannabinoids (SCs), as a major category of new psychoactive substances, have posed global concerns due to their high abuse potential and detrimental health social stability effects, rapid accurate in situ analysis is particularly challenging when they appear concealed forms. Here, the strategy electronic effect tuning cooperativity multiple noncovalent interactions was proposed for specific detection SCs, class structurally stable yet reactive inert analytes. The optimized...

Abstract The very broad emission bands of organic semiconductor materials are, in theory, suitable for achieving versatile solid‐state lasers; however, most only lase at short wavelength corresponding to the 0–1 transition governed by Franck–Condon (FC) principle. A strategy is developed overcome limit FC principle tailoring output microlasers over a wide range based on controlled vibronic microcrystal state. For first time, lasers tailored across all (0–1, 0–2, 0–3, and even 0–4) spanning...

Microstructures is an international peer-reviewed, open access, online journal. The journal of publishes articles covering new research and developments, perspectives, reviews related to the microstructures materials, including, but not limited metals alloys, ceramics, polymers, composites, crystals, glasses, biomaterials, interfaces nanomaterials.

Precise discrimination of the crucial substances, e.g., synthetic cannabinoids (SCs) that are composed low-active chemical groups and structurally similar to each other with tiny differences, is a pressing need great significance for safeguarding public security human health. The structure-relevant vibrational spectroscopic techniques, Raman spectroscopy, could reflect structural fingerprint information on target; however, algorithm-assisted phrasing inevitable. This work achieved accurate...

Abstract Multicomponent nanoparticles can be synthesized with either homogeneous or phase‐segregated architectures depending on the synthesis conditions and elements incorporated. To understand parameters that determine their structural fate, multicomponent metal‐oxide consisting of combinations Co, Ni, Cu were by using scanning probe block copolymer lithography characterized correlated electron microscopy. These studies revealed miscibility, ratio metallic components, temperature crystal...

The simultaneous introduction of shallow acceptors and elimination donor compensation is the key issue toward achieving p-type ZnO. Herein, through accurate control Li dopant configuration systematic spectroscopy characterization, we obtain direct evidence that doping creates isolated VZn in ZnO with a luminescence peak around 414 nm (∼3.0 eV), at same time, removes donors. Interestingly, defect emission also created by simple H2O2 treatment appeared single crystal abundant metal vacancies,...

Filled skutterudites, possessing a high power factor and good mechanical properties, have attracted intensive attention for the intermediate-temperature generation.

A new class of homoligated palladium(II) weak-link approach (WLA) complexes bearing hemilabile N-heterocyclic carbene (NHC)-thioether ligands is reported that, unlike previous tweezer-like WLA complexes, expand and contract in a linear fashion when switching between configurational states. These can be chemically switched trans open state closed via the addition or subsequent extraction Cl-. bis(NHC) also display unusual isomerization behavior. For example, an NMR spectroscopic investigation...

A novel method for synthesizing arrays of uniform sub-2 nm particles on substrates is described. Such are made by (i) using dip-pen nanolithography to prepare nanoreactors consisting metal-coordinated polymers; (ii) designing polymers with only one metal atom attached each polymer chain; (iii) systematically controlling nanoreactor volume down the yoctoliter scale; and (iv) transforming into a nanoparticle through thermal annealing. Polymer design in this study crucial, since it allows...

Precise detection of a trace substance that intrinsically possesses weak chemical activity and less-distinctive spatial structure is great significance, but full challenges, as it could not be effectively recognized via either an active covalent reaction process or multiple noncovalent interactions toward its simple structure. Here, the electronic-effect-driven recognition strategy was proposed to visually sense illicit drug, γ-hydroxybutyric acid (GHB), which treated analyte model due...

The allosteric regulation of bifunctional catalysis is achieved through the simultaneous use reversible acid–base and structurally addressable coordination chemistry.

A high-throughput, solution-based, scanning-probe photochemical nanopatterning approach, which does not require the use of probes with subwavelength apertures, is reported. Specifically, pyramid arrays made from high-refractive-index polymeric materials were constructed and studied as patterning tools in a conventional liquid-phase beam pen lithography experiment. Two versions explored either metal-coated or metal-free tips. Importantly, light can be channeled through both types tips...