Yingying Zuo

Bio: Yingying Zuo is an academic researcher from Dalian University of Technology. The author has contributed to research in topics: Molecular recognition & Hydrogen peroxide. The author has an hindex of 1, co-authored 2 publications receiving 4 citations.

A Novel Fluorescent Probe for Hydrogen Peroxide and Its Application in Bio-Imaging.

Abstract: Hydrogen peroxide (H2O2) plays an important role in the human body and monitoring its level is meaningful due to the relationship between its level and diseases. A fluorescent sensor (CMB) based on coumarin was designed and its ability for detecting hydrogen peroxide by fluorescence signals was also studied. The CMB showed an approximate 25-fold fluorescence enhancement after adding H2O2 due to the interaction between the CMB and H2O2 and had the potential for detecting physiological H2O2. It also showed good biocompatibility and permeability, allowing it to penetrate cell membranes and zebrafish tissues, thus it can perform fluorescence imaging of H2O2 in living cells and zebrafish. This probe is a promising tool for monitoring the level of H2O2 in related physiological and pathological research.

An Eu3+ post-functionalized nanosized metal–organic framework for cation exchange-based

Abstract: A novel strategy was demonstrated to fabricate a luminescent lanthanide functionalized MOF by encapsulating Eu3+ cations in the pores of MIL-53–COOH (Al) nanocrystals. The Eu3+ incorporated sample shows excellent luminescence and good fluorescence stability in water due to the sensitization and protection provided by the parented framework. Subsequently, Eu3+ incorporated nanocrystals were developed as a highly selective and sensitive probe for detection of Fe3+ in aqueous solutions. In addition, the possible sensing mechanism based on cation exchange between Fe3+ and the framework Al3+ in MIL-53–COOH (Al) was discussed in detail. This is the first example for detecting Fe3+ in aqueous solutions based on a lanthanide functionalized nanoscale MOF. The good fluorescence stability in an aqueous environment, the low detection limit and the broad linear range, together with the nanoscale nature of this probe suggest it has potential for intracellular sensing and imaging of Fe3+.

Structural Chemistry of Giant Metal Based Supramolecules.

Abstract: The review presents a bird-eye view on the state of research in the field of giant nonbiological discrete metal complexes and ions of nanometer size, which are structurally characterized by means of single-crystal X-ray diffraction, using the crystal structure as a common key feature. The discussion is focused on the main structural features of the metal clusters, the clusters containing compact metal oxide/hydroxide/chalcogenide core, ligand-based metal-organic cages, and supramolecules as well as on the aspects related to the packing of the molecules or ions in the crystal and the methodological aspects of the single-crystal neutron and X-ray diffraction of these compounds.

Guest‐Modulated Circularly Polarized Luminescence by Ligand‐to‐Ligand Chirality Transfer in Heteroleptic PdII Coordination Cages

Abstract: Abstract Multicomponent metallo‐supramolecular assembly allows the rational combination of different building blocks. Discrete multifunctional hosts with an accessible cavity can be prepared in a non‐statistical fashion. We employ our shape‐complementary assembly (SCA) method to achieve for the first time integrative self‐sorting of heteroleptic PdII cages showing guest‐tunable circularly polarized luminescence (CPL). An enantiopure helicene‐based ligand (M or P configuration) is coupled with a non‐chiral emissive fluorenone‐based ligand (A or B) to form a series of Pd2L2L′2 assemblies. The modular strategy allows to impart the chiral information of the helicenes to the overall supramolecular system, resulting in CPL from the non‐chiral component. Guest binding results in a 4‐fold increase of CPL intensity. The principle offers potential to generate libraries of multifunctional materials with applications in molecular recognition, enantioselective photo‐redox catalysis and information processing.

A combined bottom-up and top-down strategy to fabricate lanthanide hydrate@2D MOF composite nanosheets for direct white light emission

Abstract: Metal–organic frameworks (MOFs) have been demonstrated as excellent host matrices to encapsulate diverse guest molecules for fabricating functional composite materials. Many synthetic methods have been explored to prepare white light emitting (WLE) MOF composites; however, yielding easily solution-processable WLE guest@MOF nanocomposites remains a great challenge. In this work, we develop a novel strategy, i.e., in situ guest-introduction combined with the instant in situ exfoliation method, to fabricate WLE MOF composite nanosheets, which integrates the advantages of bottom-up synthesis and top-down exfoliation. By employing this strategy, the WLE lanthanide hydrate@2D MOF composite nanosheets with large average lateral dimensions of ∼1.2 μm × 500 nm and a thickness of ∼11.4 nm are rapidly constructed from 2D MOF precursors and lanthanide hydrate species in high yields. The white light can be finely tuned by adjusting the content of the included guest molecules, and the color-rendering index (CRI) reaches up to 92. This novel synthetic strategy has many advantages including high efficiency, facile and green synthesis, etc. The combined bottom-up and top-down strategy paves a new route to design and prepare functional guest@2D MOF composite nanosheets.