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Chinese Journal of Chemistry 2022年第5期40卷 597-602页

作者： Jianqiao Wang Huanhuan Zhang Yuguang Ma State Key laboratory of luminescent materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyNo.381 Wushan RoadTianhe DistinctGuangzhouGuangdong510640 China

Doping plays an essential role in the properties of conducting *** thickness not only has a direct influence on their photoelectric properties,but also affects the doping ability,which may lead to the decline of capacitance and electrochromic properties caused by incomplete ***,it is essential to study the quantitative relationship between doping level and film thickness in ***,empirical formula between doping level and thickness was obtained by studying the spectroelectrochemistry behaviors of two different electrochromic materials,poly(N,N'-bis(3,5-(2-thienyl)-phenyl)-1,6,7,12-tetrachloroperylene-3,4,9,10-perylenetetracarboxylic diimide)(poly(Th-Cl-PBI))and poly(3,4-ethylenedioxythiophene)(PEDOT).The doping level is verified to be correlated to the reciprocal of the 3^(rd)power of film *** results fit these formulas very well,giving correlation coefficient R^(2)higher than *** optical contrast prediction of these two electrochromic materials is also used to verify this relationship *** the first time,we quantitatively connect these two important parameters of conducting polymers,doping level and thickness.

关键词： Doping Electrochemistry Polymers Electrochromism Thickness dependence

Efficient red perovskite quantum dot light-emitting diode fabricated by inkjet printing

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materials Futures 2022年第1期1卷 135-141页

作者： Danyang Li Junjie Wang Miaozi Li Biao Guo Lan Mu Yu Luo Yi Xiao Chaohuang Mai Jian Wang Junbiao Peng Institute of Polymer Optoelectronic materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640People’s Republic of China

Perovskite quantum dots(PeQDs)are considered potential display materials due to their high color purity,high photoluminescence quantum yield(PLQY),low cost and easy film *** this work,a novel electroluminescence(EL)device consisting of the interface layer of long alkyl-based oleylammonium bromide(OAmBr),which passivates the surface defects of PeQDs and adjusts the carrier transport properties,was *** PLQY of the OAmBr/PeQD bilayer was significantly improved.A high-performance EL device with the structure of indium tin oxide/poly(3,4-ethylenedioxythiophene)polystyrene sulfonate/poly(bis(4-phenyl)(2,4,6-trimethylphenyl)amine)/OAmBr/PeQDs/2,2′,2′′-(1,3,5-benzinetriyl)-tris(1-phenyl-1H benzimidazole)/LiF/Al was constructed using a spin-coating method.A peak external quantum efficiency(EQE)of 16.5%at the emission wavelength of 646 nm was ***,an efficient matrix EL device was fabricated using an inkjet printing method.A high-quality PeQD matrix film was obtained by introducing small amounts of polybutene into the PeQDs to improve the printing *** EQE reached 9.6%for the matrix device with 120 pixels per inch and the same device structure as that of the spin-coating one.

关键词： perovskite quantum dot light-emitting diode inkjet print

Topological large-area one-way transmission in pseudospin-field-dependent waveguides using magneto-optical photonic crystals

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Photonics Research 2023年第6期11卷 1105-1112页

作者： XINYUE YU JIANFENG CHEN ZHI-YUAN LI WENYAO LIANG School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China State Key laboratory of luminescent materials and Devices South China University of TechnologyGuangzhou 510640China

We propose a pseudospin-field-dependent waveguide(PFDW)by constructing a sandwiched heterostructure consisting of three magneto-optical photonic crystals(MOPCs)with different geometric *** upper expanded MOPC applied with an external magnetic field has broken time-reversal symmetry(TRS)and an analogous quantum spin Hall(QSH)effect,while the middle standard and the lower compressed ones are not magnetized and *** to the TRS-broken-QSH effect of the upper MOPC,the topological large-area one-way transmission that uniformly distributes over the middle domain is achieved and exhibits the characteristics of a pseudospin-field-momentum-locking;i.e.,pseudospin-down(or pseudospin-up)leftward(or rightward)waveguide state when the positive(or negative)magnetic field is applied on the upper *** further demonstrate the strong robustness of the PFDW against backscattering from various kinds of *** addition,a topological beam modulator that can compress or expand the light beam,and a large-area pseudospin beam splitter have been *** results have potential in various applications such as sensing,signal processing,and optical communications.

关键词： waveguide modulator field

Unidirectional electromagnetic windmill scattering in a magnetized gyromagnetic cylinder

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Chinese Optics Letters 2022年第5期20卷 58-64页

作者：陈剑锋潘剑波郑义栋梁文耀李志远 School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China State Key laboratory of luminescent materials and Devices South China University of TechnologyGuangzhou 510640China

We present a discovery of an unusual unidirectionally rotating windmill scattering of electromagnetic waves by a magnetized gyromagnetic cylinder via an analytical theory for rigorous solution to fields and charges and an understanding of the underlying mathematical and physical mechanisms. Mathematically, the generation of nonzero off-diagonal components can break the symmetry of forward and backward scattering coefficients, producing unidirectional windmill scattering. Physically, this windmill scattering originates from the nonreciprocal unidirectional rotation of polarized magnetic charges on the surface of a magnetized gyromagnetic cylinder, which drives the scattering field to radiate outward in the radial direction and unidirectionally emit in the tangential direction. Interestingly, the unidirectional electromagnetic windmill scattering is insensitive to the excitation direction. Moreover, we also discuss the size dependence of unidirectional windmill scattering by calculating the scattering spectra of the gyromagnetic cylinder. These results are helpful for exploring and understanding novel interactions between electromagnetic waves and gyromagnetic materials or structures and offer deep insights for comprehending topological photonic states in gyromagnetic systems from the aspect of fundamental classical electrodynamics and electromagnetics.

关键词： unidirectional electromagnetic windmill scattering magnetized gyromagnetic cylinder topological photonics

Palladium-Catalyzed Tandem Cyclization Strategy for the Assembly of 3-Halo-1,2,5-triarylpyrroles from N-Alkylanilines and Haloalkynes

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Chinese Journal of Chemistry 2023年第2期41卷 181-187页

作者： Songjia Fang Huanfeng Jiang Wanqing Wu Key laboratory of Functional Molecular Engineering of Guangdong Province State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhouGuangdong 510640China

This report discloses a distinctive palladium-catalyzed sequential tandem cyclization reaction of two molecular haloalkynes and one molecular N-alkylanilines,leading to the efficient assembly of various 3-halo-1,2,5-triarylpyrrole *** carbon-carbon tri-ple bonds and one carbon-halogen bond in two molecular haloalkynes are transformed conveniently in one single step,which may involve the aminoalkynylation of haloalkyne and cyclization of the newly formed enyne *** high chemo-and regiose-lectivities,good functional group tolerance and late-stage modification of the halopyrrole products further illustrate the synthetic value of this strategy.

关键词： Palladium-catalyzed Haloalkynes N-Alkylanilines Cyclization Halopyrroles Amines Insertion Synthetic methods

Targeted and activatable nanosystem for fluorescent and optoacoustic imaging of immune-mediated inflammatory diseases and therapy via inhibiting NF-κB/NLRP3 pathways

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Bioactive materials 2022年第4期7卷 79-92页

作者： Lihe Sun Juan Ouyang Zhuo Zeng Cheng Zeng Yunqing Ma Fang Zeng Shuizhu Wu Biomedical Division State Key Laboratory of Luminescent Materials and DevicesGuangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesCollege of Materials Science and EngineeringSouth China University of TechnologyGuangzhou510640China

Immune-mediated inflammatory diseases(IMIDs)represent a diverse group of diseases and challenges remain for the current ***,we present an activatable and targeted nanosystem for detecting and imaging IMIDs foci and treating them through blocking NF-κB/NLRP3 pathways.A ROS-activatable prodrug BH-EGCG is synthesized by coupling a near-infrared chromophore with the NF-κB/NLRP3 inhibitor epigallocatechin-3-gallate(EGCG)through boronate bond which serves as both the fluorescence quencher and ROS-responsive ***-EGCG molecules readily form stable nanoparticles in aqueous medium,which are then coated with macrophage membrane to ensure the actively-targeting capability toward inflammation ***,an antioxidant precursor N-acetylcysteine is co-encapsulated into the coated nanoparticles to afford the nanosystem BH-EGCG&NAC@MM to further improve the anti-inflammatory *** from the inflammation-homing effect of the macrophage membrane,the nanosystem delivers payloads(diagnostic probe and therapeutic drugs)to inflammatory lesions more efficiently and releases a chromophore and two drugs upon being triggered by the overexpressed in-situ ROS,thus exhibiting better theranostic performance in the autoimmune hepatitis and hind paw edema mouse models,including more salient imaging signals and better therapeutic efficacy via inhibiting NF-κB pathway and suppressing NLRP3 inflammasome *** work may provide perceptions for designing other actively-targeting theranostic nanosystems for various inflammatory diseases.

关键词： Actively-targeting nanosystem Immune-mediated inflammatory disease Two-mode imaging NF-κB/NLRP3 pathways

Sputtering under Mild Heating Enables High-Quality ITO for Efficient Semi-Transparent Perovskite Solar Cells

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Journal of Renewable materials 2022年第10期10卷 2509-2518页

作者： Yongbin Jin Zheng Fang Liu Yang Kaikai Liu Mingliang Li Yaping Zhao Yujie Luo Huiping Feng Bingru Deng Chengbo Tian Changcai Cui Liqiang Xie Xipeng Xu Zhanhua Wei Xiamen Key laboratory of Optoelectronic materials and Advanced Manufacturing Institute of Luminescent Materials and Information DisplaysCollege of Materials Science and EngineeringHuaqiao UniversityXiamen361021China MOE Engineering Research Center for Brittle materials Machining Huaqiao UniversityXiamen361021China

Semi-transparent perovskite solar cells(ST-PSCs)are promising in building-integrated photovoltaics(BIPVs)and tandem solar cells(TSCs).One of the keys to fabricate high-performance ST-PSCs is depositing efficient transparent *** tin oxide(ITO)is an excellent transparent conductive oxide with good light transmittance and high ***,the high sheet resistance of ITO sputtered at room temperature leads to the low fill factor(FF)and poor power conversion efficiency(PCE)of the ***,we study the effect of the sputtering temperature on the properties of ITO and the performance of *** find that when the sputtering temperature increases from the room temperature to 70℃,the crystallinity of the sputtered ITO gradually ***,the sheet resistance decreases and the corresponding device performance ***,once the sputtering temperature further increases over 70℃,the underlying hole transport layer will be damaged,leading to poor device ***,the optimized mild heating temperature of 70℃is applied and we obtain ST-PSCs with a champion PCE of 15.21%.We believe this mild heating assisted sputtering method is applicable in fabricating BIPVs and TSCs.

关键词： Indium tin oxide sputtering temperatures semi-transparent perovskite solar cells

Multiresponsive,easy-reversible,and dual-visual Pt(Ⅱ)salt nanostructures for advanced anti-counterfeiting application

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Nano Research 2024年第1期17卷 372-381页

作者： Zhen Su§ Depeng Li§ Lixin Zhang Si Tian Yuhong Su Xiaoyun Hu Duan Xiong Qingqing Guan Key laboratory of Oil and Gas Fine Chemicals Ministry of Education College of Chemical EngineeringXinjiang UniversityUrumqi 830017China

Smart materials that integrate multi-stimuli response,full reversibility,and dual-visual read-out channel are highly desired for anticounterfeiting and information encryption ***,we developed a multiresponsive perchlorate terpyridyl Pt(Ⅱ)nano complex which could undergo fully reversible conversion between three forms stimulated by water or formaldehyde molecule due to the extent of Pt–Pt ***,a dual-visual channel,i.e.,the colorimetric channel changed from yellow to orange or red and the corresponding luminescent channel from orange to orange-red or red,has also been *** weak and equivalent strength of ion-dipole interaction and hydrogen bond that generated between formaldehyde/water and Pt(II)salt result in the easy-control reversibility between the three ***,by introducing different polymer matrices,1Cl·ClO_(4)@PMMA(1Cl·ClO_(4):[Pt(tpy)Cl]·ClO4,tpy:2,2':6',2''-terpyridine),PMMA:poly(methyl methacrylate))and 1Cl·ClO4@PVA(PVA:polyvinyl alcohol)are successfully constructed,which exhibit different reversible behaviors since the PMMA and PVA matrix exert different influences on the strength of *** smart Pt(II)salt nanostructures present great potential for high-security-level anticounterfeiting application.

关键词： Pt(II)complex multiresponse reversibility anticounterfeiting information encryption

Spherical lanthanide nanoclusters toward white-light emission and cell membrane imaging

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Nano Research 2023年第8期16卷 11495-11502页

作者： Hai-Ling Wang Zhiqiang Ni Ze-Yu Ruan Zhong-Hong Zhu Pei-Yu Liao Guangxue Feng Jian-Hua Jia Ming-Liang Tong Key laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of ChemistrySun Yat-Sen UniversityGuangzhou 510006China State Key laboratory of luminescent materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesSchool of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640China

Lanthanide doping is an effective strategy for modulating the emission of ***,by changing the cluster composition to control the energy transfer pathway,the application potential of high-nuclearity lanthanide cluster(HLC)as white-light emitter has been confirmed for the first ***,by precisely controlling the proportion of GdIII,TbIII,and EuIII ions in reactants,we obtained a spherical heterotrimetallic nanocluster Gd_(10)Tb_(12)Eu_(10),a white-light emitter with quantum yield(QY)of 12.58%and lifetime of 327.14μ***-resolution electrospray ionization mass spectrometry(HRESI-MS)demonstrates that homometallic nanoclusters Ln_(32)(Ln=Gd,Tb,and Eu)are tetracationic clusters and are highly stable in *** peripheral dense organic ligands provide a protective layer for the cluster core,which improves the stability of Ln_(32) in aqueous solution,avoids the contact between metal centers and bioactive molecules,and greatly reduces the biological *** cell imaging experiments,cationic clusters Ln_(32) are mainly localized on the cell membrane with negative charge *** far as we know,this is the first time that spherical lanthanide nanoclusters have been used for membrane imaging of living cell,opening the door for the application of HLCs in biological imaging.

关键词： spherical lanthanide clusters white-light emission high stability low toxicity cell membrane imaging

Monolithic bilayered In_(2)O_(3) as an efficient interfacial material for high-performance perovskite solar cells

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Interdisciplinary materials 2022年第4期1卷 526-536页

作者： Wanjia Tian Peiquan Song Yaping Zhao Lina Shen Kaikai Liu Lingfang Zheng Yujie Luo Chengbo Tian Liqiang Xie Zhanhua Wei Xiamen Key laboratory of Optoelectronic materials and Advanced Manufacturing Institute of Luminescent Materials and Information DisplaysCollege of Materials Science and EngineeringHuaqiao UniversityXiamenPeople's Republic of China

Carrier recombination at the buried SnO_(2)/perovskite interface limits the efficiency and stability of n-i-p-structured perovskite solar cells(PSCs).Herein,we report an In_(2)O_(3)interfacial layer with the distinctive structure of the monolithic compact/nanostructured *** partial hydrolysis nature of the In^(3+)ion enables the formation of nanorods on top of the compact In_(2)O_(3)layer when spin-coating the In(NO_(3))_(3) aqueous *** novel interfacial layer reduces the pinholes of the SnO_(2)film and increases the contact area between the perovskite and electron transport ***,PSCs with the incorporation of the interfacial layer demonstrate enhanced electron extraction and suppressed carrier ***,the champion device achieves a power conversion efficiency of 23.87%with a high fill factor of 82.14%.The optimized device also shows robust operational stability,retaining over 80%of the initial power conversion efficiency after working at the maximum power point for over 500 h under continuous one-sun illumination.

关键词： charge transfer indium oxide interfacial layer perovskite solar cells