Wenbin Huang

Harbin Institute of Technology

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i-10 index

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Co-Authors

Zikai He

Harbin Institute of Technology

Ben Zhong Tang

University of Hong Kong

Guangxi Huang

Shenzhen University

Zhiwei Liang

China Astronaut Research and Training Center

Bing Shi Li

Shenzhen University

Kang Zhou

Lanzhou Petrochemical Polytechnic

Chunya Fu

Nanjing University

Yun Zhao

Northwest Normal University

Huili Ma

Nanjing Tech University

Lianfeng Sun

National Center for Nanoscience and Technology

Cooperative Institutions

Chinese Academy of Sciences

Harbin Institute of Technology

University of Chinese Academy of Sciences

Shenzhen University

Zhejiang University

National Center for Nanoscience and Technology

University of Hong Kong

Hong Kong University of Science and Technology

Sichuan University

Sun Yat-sen University

Author Statistics

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Purely Organic Room-Temperature Phosphorescence Endowing Fast Intersystem Crossing from Through-Space Spin–Orbit Coupling

JACS Au (2021)

Jie Yu Huili Ma Wenbin Huang Zhiwei Liang Kang Zhou

Purely organic room-temperature phosphorescence endowing very fast intersystem crossing from through-space systems has not been well investigated. Here we report three space-confined bridged phosphors, where phenothiazine is linked with dibenzothiophene, dibenzofuran, and carbazole by a 9,9-dimethylxanthene bridge. Nearly pure phosphorescence is observed in the crystals at room temperature. Interestingly, phosphorescence comes solely from the phenothiazine segment. Experimental results indicate that bridged counterparts of dibenzothiophene, dibenzofuran, and carbazole contribute as close-lying triplet states with locally excited (LE) character. The through-space spin-orbit coupling principle is proposed in these bridged systems, as their 1LE and 3LE states have intrinsic spatial overlap, degenerate energy levels, and tilting face-to-face alignment. The resulting effective through-space spin-orbit coupling leads to efficient intersystem crossing a with rate constant as high as 109 s-1 and an overwhelming triplet decay channel of the singlet excited state.

Intersystem crossing

Dibenzofuran

Carbazole

Singlet fission

Dibenzothiophene

10.1021/jacsau.1c00290

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Citations (44)

Micro-focus electron source based on high current density carbon nanotube emitters

Wenbin Huang Weijun Huang Weikang Jia Changkun Dong

A high current density micro-focus cathode based on carbon nanotube (CNT) field emission was developed. The CNT film was grown directly on the nickel alloy substrate with a diameter of $\mathbf{70}\ \boldsymbol{\mu} \mathbf{m}$ by chemical vapor deposition. The effect of the cathode-grid spacing on the field emission properties was investigated, and improved field emission performances were demonstrated for the 1.4 mm spacing with a lower threshold field of $\mathbf{1.6}\ \mathbf{V}/\boldsymbol{\mu} \mathbf{m}$ and higher emission current (up to 19 A/cm ² ) comparing with spacing of 0.4 mm, indicating that increasing the electrode spacing could enhance the field emission characteristics of the CNT cathode. The X-ray tube based on the CNT micro-focus electron source reached the imaging resolution of about $\mathbf{80}\ \boldsymbol{\mu} \mathbf{m}$ .

10.1109/ivec56627.2023.10157083

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Investigations on the wettability of graphene on a micron-scale hole array substrate

RSC Advances (2015)

Yun Zhao Gang Wang Wenbin Huang Xiaokun Fan Ya Deng

When graphene almost completely complies with the morphology of a SiO₂ micron-scale hole array (MSHA) substrate, the effect of graphene's surface morphology to the wettability of graphene will be greatly facilitated by the regulation effect of MSHA.

Morphology

10.1039/c5ra13916c

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Citations (9)

CCDC 2151492: Experimental Crystal Structure Determination

The Cambridge Structural Database (2022)

Wenbin Huang Chunya Fu Zhiwei Liang Kang Zhou Zikai He

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc2b6szb

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Multiple Anti‐Counterfeiting Guarantees from a Simple Tetraphenylethylene Derivative – High‐Contrasted and Multi‐State Mechanochromism and Photochromism

Angewandte Chemie (2019)

Guangxi Huang Qing Xia Wenbin Huang Jianwu Tian Zikai He

Abstract Herein the novel tetraphenylethylene (TPE) derivative 1 was designed with an integration of aggregation‐induced emission (AIE), multi‐state mechanochromism and self‐recovery photochromism. The molecule was susceptible to grinding, heating and vapor fuming and showed corresponding transition of its emission colors. The heated powder or single crystal of 1 exhibited reversible photochromism. After a short period of UV irradiation, it showed a bright red color, but recovered to its original white appearance within 1 min. The photochromism is due to the formation of photocyclization intermediates upon UV irradiation, while the eversible mechanochromism is attributed to the weak molecular interactions derived from head‐to‐tail stacking of the molecules. This reversible multi‐state, high‐contrasted and rapid responsive mechanochromic and photochromic property cooperatively provide double enhancement of a multimode guarantee in advanced anti‐counterfeiting.

Tetraphenylethylene

Derivative (finance)

10.1002/ange.201910530

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Citations (64)

Planning method considering the kinetic characteristics of the end effector of a redundant manipulator

Journal of Tsinghua University(Science and Technology) (2014)

Wenbin Huang

Manipulator kinematics planning is not only a key focus of robot research,but is also a prerequisite for successful task execution.The rapidly-exploring random tree(RRT)method is popular for planning the kinematics motion in the joints space but cannot be used when the end effector is partly constrained.A free task subspace RRT method is described here that overcomes this disadvantage.This method extends the RRTs in the free subspace of the end effector workspace and then solves the inverse kinematics trajectory optimization for each expanding step of the RRT to obtain the joint trajectories.Furthermore,since the end effector velocity significantly impacts the inverse kinematics trajectory planning,a trajectory optimization method is also given.This method takes the end effector velocity into account and enhances the optimization capabilities.Tests show that this algorithm can efficiently handle end-effector-constrained tasks.

Robot end effector

Work space

Kinematics equations

Source

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Citations (1)

Frontispiz: Strong Circularly‐Polarized Room‐Temperature Phosphorescence from a Feasibly Separable Scaffold of Bidibenzo[b,d]furan with Locked Axial Chirality

Angewandte Chemie (2022)

Wenbin Huang Chunya Fu Zhiwei Liang Kang Zhou Zikai He

Organische Elektronik. Zikai He et al. berichten in ihrer Zuschrift (e202202977) über die zirkular-polarisierte Raumtemperatur-Phosphoreszenz eines Bidibenzo[b,d]furan-Molekülgerüsts mit fixierter axialer Chiralität.

Furan

Chirality

10.1002/ange.202283061

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Citations (2)

Measuring detonation wave profiles in plastic-bonded explosives using PDV

AIP Advances (2019)

Pei Hongbo Wenbin Huang Xu Zhang Xianxu Zheng

To obtain reaction zone parameters for several high explosives, experimental measurements of the detonation wave profiles in HMX-, RDX- and PETN-based explosives were performed using photon Doppler velocimetry (PDV). Planar detonations were produced by impacting the explosive with a sapphire flyer in a gas gun. Particle velocity wave profiles were measured at the explosive/window interface. LiF windows with very thin vapor-deposited aluminum mirrors were used for experiments. All measurements show a distinct end to the reaction zone, indicating a Chapman-Jouguet (CJ) point. For HMX-based explosives, the presented measurements show that the fast reaction time is approximately 10±2 ns, whereas for RDX- and PETN-based explosives, the values are 14±3 ns and 7±2 ns, respectively. The reaction times or reaction zone lengths obtained in the present study are smaller than previously reported data but much closer to the estimated values in theory. Additionally, the velocity at the Von Neumann (VN) spike was analyzed using the “beat cycles” method, and the pressure at the VN spike was obtained.

Detonation velocity

Pentaerythritol tetranitrate

Energetic material

10.1063/1.5057879

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Citations (8)

Efficient Visible‐Light‐Activated Ultra‐Long Room‐Temperature Phosphorescence Triggered by Multi‐Esterification

Angewandte Chemie (2023)

Jiahong Yu Zhiyu Sun Huili Ma Chengyun Wang Wenbin Huang

Abstract The development of ultra‐long room‐temperature phosphorescence (UL‐RTP) in processable amorphous organic materials is highly desirable for applications in flexible displays, anti‐counterfeiting, and bio‐imaging. However, achieving efficient UL‐RTP from amorphous materials remains a challenging task, especially with activation by visible light and a bright afterglow. Here we report a general and rational molecular‐design strategy to enable efficient visible‐light‐excited UL‐RTP by multi‐esterification of a rigid large‐plane phosphorescence core. Notably, multi‐esterification minimizes the aggregation‐induced quenching and accomplishes a ′four birds with one stone′ possibility in the generation and radiation process of UL‐RTP: i) shifting the excitation from ultraviolet light to blue‐light through enhancing the transition dipole moment of low‐lying singlet‐states, ii) facilitating the intersystem crossing process through the incorporation of lone‐pair electrons, iii) boosting the decay process of long‐lived triplet excitons resulting from a significantly increased transition dipole moment, and iv) reducing the intrinsic triplet nonradiative decay by substitution of high‐frequency vibrating hydrogen atoms. All these factors synergistically contribute to the most efficient and stable visible‐light‐stimulated UL‐RTP (lifetime up to 2.01 s and efficiency up to 35.4 % upon excitation at 450 nm) in flexible films using multi‐esterified coronene, which allows high‐tech applications in single‐component time‐delayed white light‐emitting diodes and information technology based on flashlight‐activated afterglow encryption.

Intersystem crossing

Visible spectrum

10.1002/ange.202316647

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Citations (1)

Boosting Circularly Polarized Luminescence from Alkyl‐Locked Axial Chirality Scaffold by Restriction of Molecular Motions

Chemistry - A European Journal (2023)

Wenbin Huang Yuxin Zhu Kang Zhou Letian Chen Zujin Zhao

Abstract Boosting the circularly polarized luminescence of small organic molecules has been a stubborn challenge because of weak structure rigidity and dynamic molecular motions. To investigate and eliminate these factors, here, we carried out the structure‐property relationship studies on a newly‐developed axial chiral scaffold of bidibenzo[ b,d ]furan. The molecular rigidity was finely tuned by gradually reducing the alkyl‐chain length. The environmental factors were considered in solution, crystal, and polymer matrix at different temperatures. As a result, a significant amplification of the dissymmetry factor g lum from 10 −4 to 10 −1 was achieved, corresponding to the situation from ( R )‐4C in solution to ( R )‐1C in polymer film at room temperature. A synergistic strategy of increasing the intramolecular rigidity and enhancing the intermolecular interaction to restrict the molecular motions was thus proposed to improve circularly polarized luminescence. The though‐out demonstrated relationship will be of great importance for the development of high‐performance small organic chiroptical systems in the future.

Rigidity (electromagnetism)

Chirality

10.1002/chem.202303667

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Citations (4)