A5027225358- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Porphyrin and Phthalocyanine Chemistry
- Advanced Photocatalysis Techniques
- Organic Electronics and Photovoltaics
- Lanthanide and Transition Metal Complexes
- Conducting polymers and applications
- Luminescence and Fluorescent Materials
- Organic Light-Emitting Diodes Research
- Magnetism in coordination complexes
- Crystallography and molecular interactions
- Perovskite Materials and Applications
- TiO2 Photocatalysis and Solar Cells
- Advanced Nanomaterials in Catalysis
- Carbon and Quantum Dots Applications
- Quantum Dots Synthesis And Properties
- Nanocluster Synthesis and Applications
- Nanoplatforms for cancer theranostics
- Metal-Organic Frameworks: Synthesis and Applications
- Molecular Sensors and Ion Detection
- Electrocatalysts for Energy Conversion
- Covalent Organic Framework Applications
- Copper-based nanomaterials and applications
- Nonlinear Optical Materials Studies
- CO2 Reduction Techniques and Catalysts
Hong Kong Baptist University
2015-2024
Institute of Molecular Functional Materials
2011-2022
Kowloon Hospital
2015-2021
State Council of the People's Republic of China
2019
The University of Texas at Austin
2010-2018
Regional Municipality of Waterloo
2018
Chinese University of Hong Kong
2014
University Grants Committee
2011-2012
Georgia Institute of Technology
2011
Sungkyunkwan University
2011
A series of simple phenothiazine-based dyes have been synthesized, in which a cyanoacrylate acceptor directly attached to the C(3) position phenothiazine, and an additional linear electron-rich (4-hexyloxy)phenyl group at C(7) on opposite side acceptor, alkyl chain with different length N(10) phenothiazine periphery are presented. The dye molecules shape is favorable for formation compact layer TiO2 surface, while their butterfly conformations can sufficiently inhibit molecular aggregation....
Development of water-stable metal-organic frameworks (MOFs) for promising visible-light-driven photocatalytic water splitting is highly desirable but still challenging. Here we report a novel p-type nickel-based MOF single crystal (Ni-TBAPy-SC) and its exfoliated nanobelts (Ni-TBAPy-NB) that can bear wide range pH environment in aqueous solution. Both experimental theoretical results indicate feasible electron transfer from the H4TBAPy ligand (light-harvesting center) to Ni-O cluster node...
Running rings around mercuric ions: A [26]hexaphyrin(1.1.1.1.1.0), comprising an α,α′-bipyrrole unit and four pyrrolic five pentafluorophenyl rings, was prepared characterized by X-ray crystallography (see picture; N blue, F green, C black). The expanded porphyrin displays near-infrared luminescence above 900 nm may serve as a highly sensitive selective chemodosimeter for Hg2+ ions. Supporting information this article is available on the WWW under...
Abstract: N-rich metal-free and metal-doped carbon quantum dots (CQDs) have been prepared through one-step hydrothermal method using tetraphenylporphyrin or its transition metal (Pd Pt) complex as precursor. The structures morphology of the as-prepared nanoparticles were analyzed by X-ray diffraction, high-resolution transmission electron microscopy, photoelectron spectroscopy, Fourier transform infrared spectra. Three kinds nanocomposites show similar except for presence ions in Pd-CQDs...
A water-soluble porphyrinato ytterbium complex linked with rhodamine B (Yb-2) showed mitochondria-specific subcellular localization and strong two-photon-induced NIR emissions (λ(em) = 650 nm, porphyrinate ligand π → π* transition; λ(em) 1060 Yb(III) (5)F(5/2) (5)F(7/2) transitions; σ(2) 375 GM in DMSO) an impressive emission quantum yield (1% at λ(ex) 340 nm; 2.5% 430 nm) aqueous solution.
Carbon dots (CDs) as an emerging type of carbon nanomaterials exhibit great potential in bioimaging applications owing to their superior optical properties and excellent biocompatibility. However, it is still challenging fabricate sole with integrated functionalities diagnostic therapeutic modalities. Herein, we developed a facile strategy prepare the ruthenium-containing (Ru-CDs) via hydrothermal method using 5-amino-1,10-phenanthroline ruthenium(II) complex (Ru-Aphen) citric acid starting...
A super stable anionic MOF was built from Cu<sub>5</sub>-cluster and Cu-porphyrin to exhibit 2D-HOF/3D-MOF interpenetrated topology, showing high adsorption capacity for cationic dyes.
New noble-metal-free Co(OH)<sub>2</sub>/CdS nanowires were prepared for visible light photocatalytic H<sub>2</sub>production with a rate of 14.43 mmol h<sup>−1</sup>g<sup>−1</sup>achieved.
The incorporation of intensive light absorbing porphyrins macrocycles with biocompatible nanoparticles would lead to new nanomaterials multiple imaging and therapeutic modalities. Herein, a facile synthetic strategy has been applied prepare porphyrin-implanted carbon nanodots (PNDs) by partial selective pyrolysis 5,10,15,20-tetrakis(4-aminophenyl)porphyrin (TAPP) citric acid (CA) at an appropriate temperature. As-prepared PNDs exhibit not only the excellent stability biocompatibility...
Facile preparation of lanthanide hybridized carbon quantum dots (Ln-CQDs) and their potential for visible/NIR bioimaging<italic>in vivo</italic>.
To develop new hole-transporting materials (HTMs) for efficient and stable perovskite solar cells (PSCs), 5,10,15,20-tetrakis{4-[N,N-di(4-methoxylphenyl)amino-phenyl]}-porphyrin was prepared in gram scale through the direct condensation of pyrrole 4-[bis(4-methoxyphenyl)amino]benzaldehyde. Its Zn(II) Cu(II) complexes exhibit excellent thermal electrochemical stability, specifically a high hole mobility very favorable energetics extraction that render them class HTMs organometallic halide...
Lead-free hybrid perovskites (LFHPs) have sparked considerable research interest in photocatalysis. This review introduces the surface engineering and photophysical behaviors of LFHPs for diverse solar-induced photocatalytic applications.
Electrocatalytic CO2 reduction reaction (CO2 RR) based on molecular catalysts, for example, cobalt porphyrin, is promising to enhance the carbon cycle and mitigate current climate crisis. However, electrocatalytic performance accurate evaluations remain problems because of either low loading amount or utilization rate electroactive CoN4 sites. Herein a monomer synthesized, cobalt(II)-5,10,15,20-tetrakis(3,5-di(thiophen-2-yl)phenyl)porphyrin (CoP), electropolymerized onto nanotubes (CNTs)...
Abstract One of the major obstacles porphyrins is aggregation‐caused quenching (ACQ) photoluminescence due to strong intermolecular π–π interaction planar porphyrin core in solid state. However, ACQ leads nonradiative deactivation photoexcited states which results short‐lived charge‐separated and thus low singlet quantum yields. This phenomenon would limit utilization near‐infrared fluorescent bioimaging, photodynamic therapy, photocatalytic hydrogen evolution, electrochemiluminescence,...
Abstract 2D conjugated metal‐organic frameworks (c‐MOFs) have emerged as promising materials for (opto)electronic applications due to their excellent charge transport properties originating from the unique layered‐stacked structures with extended in‐plane conjugation. The further advancement of MOF‐based (opto)electronics necessitates development novel c‐MOF thin films high quality. Cu‐HHHATN (HHHATN: hexahydroxyl‐hexaazatrinaphthylene) is a recently reported featuring conjugation, strong...
We demonstrate that the post-adsorption of small molecules (a phenothiazine-based dye) on porphyrin-sensitized TiO2 anode surface plays dual roles: (1) to greatly retard back reaction between conduction-band electrons in and oxidized species (I3−) electrolyte (2) enhance spectral response solar cells. These two effects finally give rise device efficiencies exceeding 10%, which are superior those individual dye-sensitized devices by either porphyrin (7.4%) or phenothiazine (8.2%) under same...
Abstract A series of simple phenothiazine‐based dyes, namely, TP , EP TTP ETP and EEP have been developed, in which the thiophene (T), ethylenedioxythiophene (E), their dimers, mixtures are present to modulate dye aggregation, charge recombination, regeneration for highly efficient dye‐sensitized solar cell (DSSC) applications. Devices sensitized by dyes display high power conversion efficiencies (PCEs) 8.07 ( J sc =15.2 mA cm −2 V oc =0.783 V, fill factor (FF)=0.679) 7.87 % =16.1 =0.717...
Abstract This review firstly summarizes our recent work on the preparation and photophysical properties of cationic or neutral lanthanide(III) monoporphyrinate complexes, as well some bridging dinuclear in which porphyrinate anion can sensitize NIR emission Nd III , Yb Er ions by serving an antenna that absorbs visible light transfers energy to excited state ion, followed relaxation through emission. Next, several d–f heterobimetallic diporphyrin a transition metal (M = Zn, Pd, Pt) moiety...