A5100716113- Perovskite Materials and Applications
- Organic Electronics and Photovoltaics
- Luminescence and Fluorescent Materials
- Conducting polymers and applications
- Nanoplatforms for cancer theranostics
- Molecular Sensors and Ion Detection
- Photonic and Optical Devices
- Organic Light-Emitting Diodes Research
- Porphyrin and Phthalocyanine Chemistry
- Molecular Junctions and Nanostructures
- Nanowire Synthesis and Applications
- solar cell performance optimization
- Mass Spectrometry Techniques and Applications
- Semiconductor Quantum Structures and Devices
- Chalcogenide Semiconductor Thin Films
- Lipid Membrane Structure and Behavior
- Semiconductor Lasers and Optical Devices
- Environmental remediation with nanomaterials
- Advanced Fiber Laser Technologies
- Quantum Dots Synthesis And Properties
- Lipid metabolism and biosynthesis
- Advanced Fiber Optic Sensors
- Entrepreneurship Studies and Influences
- Healthcare Technology and Patient Monitoring
- Neural Networks and Reservoir Computing
University of Hong Kong
2014-2021
Kowloon Hospital
2018-2021
Hong Kong University of Science and Technology
2018-2021
Changzhou University
2018-2019
Materials Science & Engineering
2018
Sichuan University
2017
Yangtze University
2010-2017
Far-red and near-infrared (NIR) fluorescent materials possessing the characteristics of strong two-photon absorption aggregation-induced emission (AIE) as well specific targeting capability are much-sought-after for bioimaging therapeutic applications due to their deep penetration depth high resolution. Herein, a series dipolar far-red NIR AIE luminogens with push-pull effect designed synthesized. The obtained fluorophores display bright solid-state fluorescence quantum yield up 30%, large...
Acrylonitriles with aggregation-induced emission (AIE) characteristics have been found to show promising applications in two-photon biomedical imaging. Generally, elaborate synthetic efforts are required achieve different acrylonitriles distinct functionalities. In this work, we first reported the synthesis of two group-functionalized AIE-active (TPAT-AN-XF and 2TPAT-AN) obtained simply by mixing same reactants at temperatures using a facile transition metal-free method. These AIE luminogens...
Lipid droplets are highly associated with obesity, diabetes, inflammatory disorders, and cancer. A reliable two-photon dye for specific lipid imaging in live cells tissues at ultralow concentration has rarely been reported. In this work, four new aggregation-induced emission luminogens (AIEgens) based on the naphthalene core were designed synthesized droplet staining. The molecules, namely, NAP AIEgens, exhibit large Stokes shift (>110 nm), high solid-state fluorescence quantum yield (up to...
The traditional design strategies for highly bright solid-state luminescent materials rely on weakening the intermolecular π-π interactions, which may limit diversity when developing new materials. Herein, we propose a strategy of tuning molecular packing mode by regioisomerization to regulate fluorescence. TBP-e-TPA with rotor in end position planar core adopts long-range cofacial mode, solid state is almost non-emissive. By shifting rotors bay position, resultant TBP-b-TPA possesses...
Mitochondria-targeted photosensitizers with highly efficient singlet oxygen generation, bright near-infrared AIE and good two-photon absorption are obtained through ingenious molecular engineering for cancer cell-selective photodynamic therapy.
Abstract Cell staining is a fascinating research area where monitoring and visualizing different cell organelles can be done using fluorescence techniques. However, the design synthesis of organelle‐targeting fluorophores still challenge for several specific organelles. Herein, platform synthesizing efficient red‐emitting aggregation‐induced emission luminogens (AIEgens) with donor–acceptor characteristics reported. The core molecule easily functionalized in order to modulate organelle...
Organic solar cells based on non-fullerene acceptors can show high charge generation yields despite near-zero donor-acceptor energy offsets to drive separation and overcome the mutual Coulomb attraction between electron hole. Here, we use time-resolved optical spectroscopy that free charges in these systems are generated by thermally activated dissociation of interfacial charge-transfer states occurs over hundreds picoseconds at room temperature, three orders magnitude slower than comparable...
Abstract Chemical modifications of non‐fullerene acceptors (NFAs) play vital roles in the development high efficiency organic solar cells (OSCs). In this work, on basis previously reported molecule named Y6‐1O, chlorination and inner side‐chain engineering are adopted to endow corresponding devices with higher open‐circuit voltage ( V OC ) short‐circuit current density J SC as well good morphology for fill factor (FF). As a result, BTP1O‐4Cl‐C12 can help achieve power conversion (PCE) 17.1%...
An interfacial engineering strategy is successfully developed with a maximum PCE of 20.22%, high <italic>V</italic><sub>OC</sub> 1.084 V and relatively low non-radiative recombination loss in inverted planar perovskite solar cells.
The deployment of photonic integrated circuits (PICs) necessitates an integration platform that is scalable, high-throughput, cost-effective, and power-efficient. Here we present a monolithic InP on SOI to synergize the advantages two mainstream platforms: Si photonics photonics. This InP/SOI realized through selective growth both sub-micron wires large dimension membranes industry-standard (001)-oriented silicon-on-insulator (SOI) wafers. epitaxial in-plane, dislocation-free,...
Excited-state “double-bond” torsion plays an important role in the nonluminescent behaviour of a stilbene-based twisted isomer.
The alkoxy substitution were taken on IDT-series and Y-series non-fullerene acceptors. resulting molecules named IDTN-O Y6-O both exhibit better performance, indicating it is an effective method to optimize these two types of
A novel strategy is proposed to construct simple-structured SMAs using a weakly electron-deficient thiazolothiazole (TTz) core. The highest PCE of 8.77% recorded for TTz1-based OSCs, which the efficiency date among non-fullerene OSCs with SMAs.
Two advanced boron dipyrromethene (BODIPY) based photosensitizers have been synthesized and characterized. With a glibenclamide analogous moiety, these compounds can localize in the endoplasmic reticulum (ER) of HeLa human cervical carcinoma cells HepG2 hepatocarcinoma cells. The BODIPY π skeleton is conjugated with two styryl or carbazolylethenyl groups, which substantially red-shift Q-band absorption fluorescence emission impart two-photon (TPA) property to chromophores. TPA cross section...
A ternary material system featuring two donor polymers with identical absorption spectra and differently-oriented side-chains was used in an organic photovoltaic (OPV) cell. It is the first blended OPV cell >16% efficiency.
Lipid droplets (LDs) actively participate in many biological processes whose abnormality will result different diseases; thus, it is vital to study the bioactivities of LDs. Red/near-infrared (NIR) fluorescent materials with aggregation-induced emission (AIE) characteristics are suitable for LD imaging and tracking because their noninvasiveness, large Stokes shift, low photodamage, excellent photostability. Meanwhile, two-photon emerges advantages higher resolution deeper penetration depth....
Open AccessCCS ChemistryCOMMUNICATION6 Jun 2022A Simple Approach to Achieve Organic Radicals with Unusual Solid-State Emission and Persistent Stability Xueqian Zhao†, Junyi Gong†, Parvej Alam, Chao Ma, Yanpei Wang, Jing Guo, Zebin Zeng, Zikai He, Herman H. Y. Sung, Ian D. Williams, Kam Sing Wong, Sijie Chen, Jacky W. Lam, Zheng Zhao Ben Zhong Tang Zhao† Department of Chemistry, Hong Kong Branch Chinese National Engineering Research Center for Tissue Restoration Reconstruction, Institute...
Semiconductor nano-lasers grown on silicon and emitting at the telecom bands are advantageous ultra-compact coherent light sources for potential Si-based photonic integrated circuit applications.However, realizing room-temperature lasing inside nano-cavities is challenging has only been demonstrated up to E band.Here, we report InP/InGaAs nano-ridge lasers with emission wavelengths ranging from O, E, S C band operating room temperature ultra-low thresholds.Using a cycled growth procedure,...
Abstract The effects of alkyl chain regiochemistry on the properties donor polymers and performances non‐fullerene organic solar cells are investigated. Two (PfBTAZ PfBTAZS) compared that have nearly identical chemical structures except for chains. optical crystallinity two yet PfBTAZ:O‐IDTBR blend exhibits double domain size to based PfBTAZS:O‐IDTBR. To reveal origins very different blends, morphology neat polymer films is characterized, it found PfBTAZ tends aggregate into much larger...
Abstract The traditional design strategies for highly bright solid‐state luminescent materials rely on weakening the intermolecular π–π interactions, which may limit diversity when developing new materials. Herein, we propose a strategy of tuning molecular packing mode by regioisomerization to regulate fluorescence. TBP‐ e ‐TPA with rotor in end position planar core adopts long‐range cofacial mode, solid state is almost non‐emissive. By shifting rotors bay position, resultant b possesses...
We present a two-photon AIEgen, ABCXF with nonaromatic rotors (–CF<sub>3</sub>), high absorption cross-section, bright red emission in the solid-state, and remarkably photostability for fatty liver disease diagnosis.
Abstract Transient optical spectroscopy is used to quantify the temperature‐dependence of charge separation and recombination dynamics in P3TEA:SF‐PDI 2 PM6:Y6, two non‐fullerene organic photovoltaic (OPV) systems with a negligible driving force high photocurrent quantum yields. By tracking intensity transient electroabsorption response that arises upon interfacial , free generation rate constant ≈2.4 × 10 s −1 observed at room temperature, an average energy ≈230 meV stored between pairs....
This paper relates to a genuine wrist pulse oximeter, which is noninvasive medical device that can measure the rate and oxygen saturation level in person's blood. The novel due its innovative design. It new type of reflective has concave structure for housing optical source sensor. neo-reflective sensor module designed send data nearby intelligent mobile phone using wireless transmission. oximeter been developed calibrated, calibration curve was analyzed. design this would enable user wear...