Yiwen Li

Shanghai Advanced Research Institute

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Jiaji Cheng

Hubei University

Tingchao He

Shenzhen University

Junjie Hao

Université de Bordeaux

Rui Chen

Southern University of Science and Technology

Xi Zhu

Fujian Agriculture and Forestry University

Zikang Tang

Northwest A&F University

Jiagen Li

Shenzhen Academy of Robotics

Junzi Li

Shenzhen University

Marie‐Hélène Delville

Institut de Chimie de la Matière Condensée de Bordeaux

Jun Miao

Hebei Medical University

Cooperative Institutions

Medical Architecture (United Kingdom)

317

Chinese Academy of Sciences

160

University of Chinese Academy of Sciences

Jilin University

Huazhong University of Science and Technology

Shanghai Jiao Tong University

Tsinghua University

Nanjing University

Southern University of Science and Technology

University of Science and Technology of China

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Direct labeling and visualization of blood vessels with lipophilic carbocyanine dye DiI

Nature Protocols (2008)

Yiwen Li Ying Song Lian Zhao Gabriel Gaidosh Alan M. Laties

10.1038/nprot.2008.172

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Citations (254)

Ligand-Induced Chirality in Asymmetric CdSe/CdS Nanostructures: A Close Look at Chiral Tadpoles

ACS Nano (2020)

Junjie Hao Yiwen Li Jun Miao Rulin Liu Jiagen Li

Ligand-induced chirality in asymmetric CdSe/CdS core-shell nanocrystals (NCs) has been extensively applied in chiral biosensors, regioselective syntheses and assemblies, circularly polarized luminescence (CPL), and chiroptic-based devices due to their excellent physiochemical properties, such as the tunable quantum confinement effects, surface functionality, and chemical stability. Herein, we present CdSe/CdS NCs with various morphologies such as nanoflowers, tadpoles, and dot/rods (DRs) with chirality induced by surface chiral ligands. The observed circular dichroism (CD) and CPL activities are closely associated with the geometrical characteristics of the nanostructures, such as the shell thickness and the aspect ratio of the CdSe/CdS NCs. Furthermore, in situ observations of the growth of tadpoles with a single tail indicate that the CD response is mainly attributed to the CdS shell, which has a maximum tail length of ∼45 nm (approximately λ/10 of the incident light wavelength). On the other hand, the CPL activity is only related to the CdSe core, and the activity benefits from a thin CdS shell with a relatively high photoluminescence quantum yield (QY). Further theoretical models demonstrated the aspect-ratio-dependent g-factor and QY variations in these asymmetric nanostructures. These findings provide insights into not only the asymmetric synthesis of CdSe/CdS NCs, but also the rational design of CdSe/CdS nanostructures with tunable CD and CPL activities.

Chirality

10.1021/acsnano.0c03909

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Citations (67)

The Effect of Horizontal Pay Dispersion, Capacity for Budget Slack, and Severity of Peer Overstatement on Managerial Reporting Behavior.

Yiwen Li

Horizontal and vertical

10.26226/morressier.5f0c7d3058e581e69b05d01c

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Citations (0)

China TCM Cardio Bank (CTC Bank): A high-quality, large-sample and real-world research database

Science Bulletin (2024)

Yiwen Li Yanfei Liu Mengmeng Zhu Wenting Wang Keji Chen

Sample (material)

10.1016/j.scib.2024.11.013

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34-3: A Low-cost, Two-step Nucleation and Growth of CdTe Quantum Dots via Magic-sized Cluster Intermediates in Aqueous Phase

SID Symposium Digest of Technical Papers (2016)

Junjie Hao Wei Chen Jing Qin Yulong Chen Dan Wang

We report a two-step nucleation and growth of CdTe quantum dots via magic-sized cluster intermediates. In this low-cost aqueous phase procedure (10 times lower than organic-phase), the spectrally narrow emission (37 nm) with high quantum yield >50%) can be utilized for high definition and color gamut displays.

Cadmium telluride photovoltaics

Gamut

Quantum yield

10.1002/sdtp.10697

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Machine learning‐assisted wearable sensor array for comprehensive ammonia and nitrogen dioxide detection in wide relative humidity range

InfoMat (2024)

Yiwen Li Shuai Guo Boyi Wang Jianguo Sun Liupeng Zhao

Abstract The fast booming of wearable electronics provides great opportunities for intelligent gas detection with improved healthcare of mining workers, and a variety of gas sensors have been simultaneously developed. However, these sensing systems are always limited to single gas detection and are highly susceptible to the inference of ubiquitous moisture, resulting in less accuracy in the analysis of gas compositions in real mining conditions. To address these challenges, we propose a synergistic strategy based on sensor integration and machine learning algorithms to realize precise NH 3 and NO 2 gas detections under real mining conditions. A wearable sensing array based on the graphene and polyaniline composite is developed to largely enhance the sensitivity and selectivity under mixed gas conditions. Further introduction of backpropagation neural network (BP‐NN) and partial least squares (PLS) algorithms could improve the accuracy of gas identification and concentration prediction and settle the inference of moisture, realizing over 99% theoretical prediction level on NH 3 and NO 2 concentrations within a wide relative humidity range, showing great promise in real mining detection. As proof of concept, a wireless wearable bracelet, integrated with sensing arrays and machine‐learning algorithms, is developed for wireless real‐time warning of hazardous gases in mines under different humidity conditions. image

Nitrogen dioxide

10.1002/inf2.12544

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Citations (31)

AIEE-active blue-emitting molecules derived from methoxyl-decorated triarylcyclopentadienes: Synthesis, crystal structures, photophysical and electroluminescence properties

Dyes and Pigments (2017)

Junwei Ye Xueming Huang Yiwen Li Ting Zheng Guiling Ning

Cyclopentadiene

Carbazole

10.1016/j.dyepig.2017.08.035

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Citations (11)

Drying of cellulose nanocrystal gel beads using supercritical carbon dioxide

Journal of Chemical Technology & Biotechnology (2019)

Yiwen Li Jiang Hua Binbin Han Yang Zhang

Abstract BACKGROUND The effects of the conditions for the supercritical carbon dioxide (scCO 2 ) drying of cellulose nanocrystal (CNC) wet gel were investigated on the residual solvent content, the shrinkage and the microstructure of the ensuing aerogel. RESULTS The scCO 2 drying of CNC wet gel could be divided into a spillage phase and an extraction phase. In the first phase, just a very short time after the beginning of drying, shrinkage occurred and more than half of the solvent was removed. No further shrinkage was observed thereafter, but the solvent continued to be exponentially removed. Increasing pressure, temperature and time were favorable for solvent removal and the reduction of aerogel shrinking. The shrinkage increased the pore size inside the aerogel and made the outer surface of the CNC aerogel much denser than its interior. To preserve the original microstructure of the wet gel, the optimal drying was performed at 11.04 MPa and 40 °C for 120 min. At these conditions, the shrinkage ratio was only inversely proportional to the CNC content in the wet gel. CONCLUSION CNC aerogel was obtained with a shrinkage ratio of 3.1%, a surface area of 387 m 2 g −1 and an average pore size of 7.2 nm using 3.0% (w/w) CNC wet gel. © 2019 Society of Chemical Industry

Shrinkage

Supercritical Carbon Dioxide

Supercritical drying

10.1002/jctb.5936

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Citations (7)

High performance flexible photodetector based on 0D-2D perovskite heterostructure

Chip (2022)

Yali Ma Yiwen Li He Wang Mengke Wang Jun Wang

Flexible photodetectors (PDs) comprised of low-dimensional organic-inorganic hybrid perovskites with perovskite quantum dots are expected to be the next generation wearable optoelectronic devices. A flexible Vis-NIR PD which contains 2D Dion-Jacobson (DJ) perovskite (4AMP)(MA)2Pb3I10 (4AMP = 4-(aminomethyl)piperidinium, MA = methylammonium) (n3) and micro concentration of CsPbI3 perovskite quantum dots (QDs) layered heterostructures was designed and synthesized in the current work. Controlled by the optimal concentration of QDs, the device response under 660 nm light was increased to 615%. The device combination as per mass of QDs exhibited strong photosensitivity and high-power output. The band gap between the two is minimal, which formed a matching structure and lowered the energy barrier of carrier transport process. QDs layer filled the gap of perovskite film, forming an almost defect-free heterostructure. QDs layer isolated water and passivated the perovskite layer, which therefore contributed to the high-performance of optoelectronic devices. Under the optimal concentration of QDs with up to 5000 bending cycles and different bending angles, the degradation of PDscouldbe ignored, and the devices tended to show a self-healing phenomenon with increasing bending cycles. The optimized strategy will be conducive to developing flexible, wearable, high-performance and low-cost PDs.

Solution process

Band bending

Active layer

10.1016/j.chip.2022.100032

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Citations (7)

Multiple cell death pathways triggered by temperature-mediated synergistic effect derived from chiral phototheranostic ablation nanoagents

Applied Materials Today (2021)

Jun Miao Ying Cai Yining Shao Guilin Yang Huiyu Huang

Chirality

Photothermal effect

Nanodot

10.1016/j.apmt.2021.101001

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Citations (9)