Publications by authors named "Shouzhi Pu"

Photo-responsive switches are very promising materials due to their potential applications in many fields. However, photo-controlled color/fluorescence dual-switching with higher modulation efficiency has rarely been reported. Herein, two new optical responsive switches were constructed by Eu-doped ZnO@Silane quantum dots (Eu:ZnO@Silane QDs) and two diarylethenes.

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Three novel D-A-D-structured emitters derived from 9, 10-dithienylanthracene derivatives (DTAs) were synthesized and characterized. These DTAs consist of substituted 9-phenyl-9H-carbazole (BPCB-DTA), triphenylamine (BTPA-DTA) and N, N-dimethylaniline (BDMA-DTA) as donor units, with the phenylacetonitrile group serving as the acceptor. The impact of steric hindrance and electronic effect of the substituents on the optical properties has been thoroughly discussed.

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Currently, AIEgen-photochromics conjugates and intrinsic photochromic AIEgens are the two major molecular design strategies for photoresponsive AIE materials. However, these two strategies still have their own limitations. In our previous research, we discovered pyrimido[2,1-b][1,3]benzothiazole (PBT) as a novel core structure of AIEgens.

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As one of the most abundant biothiols in cells, glutathione (GSH) usually exists in a dynamic equilibrium of oxidized glutathione (GSSG) and reduces glutathione redox, and plays an essential reducing substance to maintain the REDOX balance of the microenvironment. So, the development of a reliable GSH sensor will be important for living cells and organisms. We fabricated a mitochondria targeted "turn-on" fluorescent sensor based on Ir (III) complex and successfully detected endogenous and exogenous GSH in living cells and zebrafish.

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Article Synopsis
  • A series of fluorene-based gold(I) complexes I-VI were synthesized and analyzed using advanced techniques like NMR and X-ray diffraction.
  • The complexes exhibited varying colors of fluorescence (blue-green to yellow) in solid form, which could be altered through positional isomerism and increases in conjugation.
  • When ground, the fluorescence of these compounds decreased significantly, particularly complex IV, which demonstrated a strong mechanochromic effect, leading to an innovative dual information encryption system based on its properties.
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Uranium is a critical resource in the development of nuclear energy, and its extraction from natural seawater has been identified as a potential solution to address uranium resource shortages. In this study, hierarchical meso-/micro- porous metal-organic framework functionalized with phytic acid (PA) microspheres (denoted H-UiO-66-PA) are rationally synthesized for efficient uranium extraction. This unique design allowed for a large adsorption capacity and fast adsorption kinetics, making it a promising material for uranium extraction.

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  • Cysteine (Cys) is an essential amino acid crucial for maintaining cellular oxidative balance, and abnormal levels can cause various diseases, highlighting the need for a reliable detection method.* -
  • Researchers synthesized a turn-off fluorescent probe called TA that selectively detects Cys, exhibiting features like low detection limits, photostability, and compatibility with live cells, with its mechanism confirmed through various scientific methods.* -
  • The development of this probe not only aids in imaging Cys in biological systems like A549 cells and zebrafish but also opens up new avenues for designing fluorescent probes, enhancing understanding of their mechanisms.*
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As a kind of antibiotic, tetracycline (TC) might remain in animal blood and milk products during use, which poses a risk to humans after consumption. Therefore, a ratiometric fluorescence probe was proposed for the detection of TC, which was based on an Eu functionalized hydrogen-bonded organic framework (HOF). Since there are a large number of N and O atoms in the skeleton of HOF, more Eu could be loaded onto HOF by forming coordinate bonds, while preserving the fluorescence of luminol monomer in HOF.

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A convenient and efficient synthesis of structurally diverse indazolo[1,2-]indazolones a Rh(III)-catalyzed [4 + 1] annulation of 1-arylindazolones with alkynyl cyclobutanols has been achieved by combining C-H and C-C bond cleavage. This cascade reaction features readily available starting materials, good functional group tolerance, broad substrate scope, and excellent atom-economy.

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Article Synopsis
  • Carbon dots are a new type of zero-dimensional nanomaterial with potential applications, but their aggregation can reduce fluorescence and limit their use.
  • A newly developed sulfur-doped carbon dot (S-CD) shows different fluorescence properties depending on its state, emitting blue fluorescence in ethanol and orange in solid form due to aggregation-induced emission (AIE).
  • This study highlights the unique features of S-CDs, such as S-S bonds and reduced rotation of aromatic rings in solid state, and suggests their practical use in areas like fingerprint identification and anti-counterfeiting.
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In this study, a series of tetraphenylethene-containing gold(I) complexes with different auxiliary ligands have been synthesized. These complexes were characterized using a variety of techniques including nuclear magnetic resonance spectroscopy, mass spectrometry, and single crystal X-ray diffraction. Their aggregation-induced emission (AIE) behaviors were investigated through ultraviolet/visible and photoluminescence spectrum analyses, and dynamic light scattering measurements.

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Hydrogen sulfide (HS) is a pungent gas that is one of the key mediators of signal transduction in biological systems, and its presence is related to the freshness of some protein foods. Using phenothiazine derivatives as fluorophores and 2, 4-dinitrobenzene sulfonate (DNBS) fragments as reaction groups, a near-infrared (NIR) probe WX-HS for HS identification was designed. With the addition of HS, WX-HS appeared a strong fluorescence signal at 660 nm with short reaction time (90 s) and high sensitivity, and fluorescence state change from non-fluorescent to orange-red.

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Article Synopsis
  • * This compound can act as a near-infrared fluorescent probe for easily identifying the presence of fluoride (F) and hydrogen sulfide (HS), showing excellent selectivity and resistance to interference, with a significant red shift (> 90 nm) in its emission.
  • * The probe has practical applications, including test strip detection and cell imaging, and it can effectively identify HS generated during food spoilage without the need for complex laboratory equipment.
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SO derivatives play an important role in many metabolic processes, excessive ingestion of them can lead to serious complications of various diseases. In this work, a novel dual ratiometric NIR fluorescent probe XT-CHO based on ICT effect was synthesized for detecting SO derivative. In the design of the probe, the α, β-unsaturated bond formed between benzopyran and coumarin was used as the reaction site for SO, meanwhile, the extended π-conjugate system promoted maximum emission wavelength of the probe up to 708 nm.

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Efficient uranium extraction from seawater is critical for the development of the nuclear industry. Herein, a polydopamine/salicylaldoxime decorated hierarchical zeolitic imidazolate framework-8 (H-PDA/SA-ZIF-8) is constructed by using a controlled etching process. Benefiting from the combination of PDA/SA and the zeolitic imidazolate framework-8 (ZIF-8), as well as a controlled etching process, the H-PDA/SA-ZIF-8 possesses multiaffinity sites, excellent specific surface area (1234.

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Hydrogen sulfide (HS) is a common toxic gas that threatens the quality and safety of environmental water and food. Herein, a new near-infrared fluorescent probe DTCM was synthesized and characterized by single crystal X-ray diffraction for sensing HS. It exhibited a remarkable "turn-on" near-infrared (NIR) emission response at 665 nm with a remarkably massive Stokes shift of 175 nm, super-rapid detection ability (within 30 s), excellent photostability, high selectivity and sensitivity (limit of detection, LOD = 58 nM).

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Many BF complexes of heteroaromatics are well known for their dual-state emission (DSE) properties. However, AIE and ACQ effects have also been observed in certain cases. To date, no rational explanations have been proposed for these uncommon photoluminescence (PL) behaviours.

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  • Tyrosinase (TYR) is an important enzyme in melanin production, influencing skin pigmentation and linked to conditions like albinism and vitiligo when expressed abnormally.
  • Increased levels of TYR are associated with melanoma and play a role in pigmentation processes during wound healing and fruit ripening.
  • A new fluorescent probe named Pro-OH was developed to selectively and sensitively detect TYR in live cells and zebrafish, demonstrating effective imaging at wound sites.
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A new asymmetrical photochromic diarylethene DTE-HQo composed of a 2-hydrazinoquinoline moiety as the binding unit for ions and dithenylethene as a photoswitching trigger was reported. DTE-HQo displayed favourable photochromism upon irradiation with UV/vis light. Its fluorescent behaviour could be efficiently modulated by light, Zn, Cd and HSO.

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Hydrogen sulfide (H S) is a crucial endogenous signaling component in organisms that is involved in redox homeostasis and numerous biological processes. Modern medical research has confirmed that hydrogen sulfide plays an important role in the pathogenesis of many diseases. Herein, a fluorescent probe Eu(ttbd) abt based on europium(III) complex was designed and synthesized for the detection of H S.

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With the rapid development of industry and technology, high-efficiency extraction of uranium from seawater is a research hotspot from the aspect of nuclear energy development. Herein, a new amidoximated metal-organic framework (UiO-66-DAMN-AO) constructed through a novel organic ligand of 2-diaminomaleonitrile-terephthalic acid (BDC-DAMN) is designed via one-step post-synthetic methods (PSM), which possess the merit of abundant multiaffinity sites, large specific surface area, and unique porous structure for efficient uranium extraction. Adopting one-step PSM can alleviate the destruction of structural stability and the reduction of the conversion rate of amidoxime groups.

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Article Synopsis
  • - The study introduces CyNa-N, a dual-responsive fluorescent probe designed to detect hypochlorous acid (HClO) and hydrogen sulfide (HS) simultaneously, with high sensitivity and selectivity shown by distinct fluorescence emissions.
  • - Detection limits for HClO and HS are reported at 0.17 µM and 0.15 µM, respectively, with the sensing mechanism confirmed through mass spectrometry and nuclear magnetic resonance techniques.
  • - The probe was successfully used for imaging HClO and HS in living cells, highlighting its potential for applications in biological imaging and research.
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Given the significant interactions between hydrogen sulfide (HS) and cysteine (Cys) in organisms, a dual-site multi-purpose fluorescent probe (Cy-NP) for HS and Cys was synthesized. Cy-NP is composed of two fluorophores: naphthalimide that emits in the visible region of 500-600 nm, and cyanine dye that emits in the NIR region of 700-800 nm. Cy-NP showed admirable sensitivity and selectivity for identifying HS and Cys by fluorescent signals with limits of detection as low as 0.

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Carbon dots (CDs) as luminescent zero-dimensional carbon nanomaterials have good aqueous dissolution, photostability, high quantum yield, and tunability of emission color. It has great application potential in many fields, including bioimaging, labeling of biological species, drug delivery, and sensing in biomedical. However, controlling the fluorescence emission of carbon dots remains a formidable challenge.

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A series of fluorometric sensors of Zn have been synthesized due to the significant function of Zn in the human body and environment. However, most of probes reported for detecting Zn have high detection limit or low sensitivity. In this paper, an original Zn sensor, namely 1o, was synthesized by diarylethene and 2-aminobenzamide.

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