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National Science Review 2023年第9期10卷 286-306页

作者： Junbo Zhu Jingchen Tao Wei Yan Weixing Song beijing key laboratory for optical materials and photonic devices Department of Chemistry Capital Normal University

Wearable hydrogel sensors provide a user-friendly option for wearable electronics and align well with the existing manufacturing strategy for connecting and communicating with large numbers of Internet of Things devices.This is attributed to their components and structures,which exhibit exceptional adaptability,scalability,bio-compatibility,and self-healing properties,reminiscent of human skin.This review focuses on the recent research on principal structural elements of wearable hydrogels:toughening networks and conductive networks,highlighting the strategies for enhancing mechanical and electrical properties.Wearable hydrogel sensors are categorized for an extensive exploration of their composition,mechanism,and design approach.This review provides a comprehensive understanding of wearable hydrogels and offers guidance for the design of components and structures in order to develop high-performance wearable hydrogel sensors.

关键词： hydrogels electronic skin toughening networks conductive networks wearable sensors

Multichannel Lanthanide-Doped Nanoprobes Improve Diagnostic Performance

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Accounts of materials Research 2020年第3期1卷 225-235页

作者： Yuxin Liu Zheng Wei Xianquan Liao Jing Zhou Beijing Key Laboratory for Optical Materials and Photonic Devices&Department of Chemistry Capital Normal UniversityBeijing 100048China

CONSPECTUS:Diagnostics are vital in healthcare services because of their ability to reveal disease occurrence and evaluate therapeutic performance.Recent advances in nanoprobes have revolutionized the diagnostics field.These nanoprobes typically contain one or more signal channels;thereby,they are able to quantify chemical signals or locate spatial indicators upon signal collection.It is noteworthy that multichannel nanoprobes have more merits than conventional single-channel ones,which has recently attracted significant interest.A benefit of this approach is that multiple signals will generate more information in one single test,which avoids omitting details and reduces the risk of false results.Additionally,multiple signals give more instrumentation options to operators,which allows diagnostics in broad clinical conditions.As a result,multichannel nanoprobes are ideal tools to increase diagnostic performance.Due to the specific 4f electrons,lanthanide ions have simultaneous and extraordinary electric,optical,and magnetic capacities.Therefore,lanthanide-doped nanomaterials are advanced candidates for fabricating multichannel nanoprobes and hence are favorable for biological and medical studies.In this Account,we highlight recent progress in designing multichannel lanthanide-doped nanoprobes to improve biomolecule detection and diagnostic performance with a particular focus on our own work.First,we present a brief overview on the type of signals that are available for constructing multichannel nanoprobes.The principles and merits of each signal are highlighted.Then,we summarize the general strategies of integrating multiple types of signals into one nanoprobe.Using this strategy,we have fabricated a series of multichannel lanthanide-doped nanoprobes and have explored their potential to improve diagnostic precision from different aspects.Finally,we propose an outlook on future development and possible issues of next-generation lanthanidedoped nanoprobes with multiple signal channels.We hope this timely account can

关键词： probes details integrating

Ultra-long room temperature phosphorescence of indium-based organic inorganic metal halides for naked-eye-visible afterglow

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中国科学:化学英文版 2023年第9期66卷 2576-2582页

作者： Heng Yu Hao Gong Zhaorui Hua Yang Zhang Wenming Sun Shuyan Gong Ganglong Cui Yang Tian Hongbing Fu beijing key laboratory for optical materials and photonic devices Department of ChemistryCapital Normal UniversityBeijing 100048China key laboratory of Theoretical and Computational Photochemistry Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875China

Solid-state molecules based on room-temperature phosphorescent(RTP)emission have received extensive attention due to their special optical properties of triplet excitons.However,there are still few solid molecular systems with naked-eye-visible afterglow characteristics.Herein,we introduce 4-phenylbenzylamine(namely PBA)with a long conjugated system into common non-toxic In^(3+)to form an indium-based organic inorganic halide,whose chemical formula is PBA_(3)[InCl_6]·H_(2)O.Interestingly,this hybrid halide generates a RTP emission at 617 nm with a lifetime decay as long as 290.4 ms,expressing a naked-eye-visible afterglow for more than 7 s.The mechanism study shows that the long lifetime RTP originated from the specific lamellar stacking of organic molecules and metal halide units,facilitating the interaction between the inorganic layers and organic layers.Therefore,the material can be potentially used in emergency lighting,information security,and other fields.Meanwhile,this work provides a reference for the design and implementation of a more efficient organic-inorganic hybrid system with the ultralong RTP emission.

关键词： phosphorescence indium 4-phenylbenzylamine halide afterglow

Gradient-crosslinked hydrogel microdome pattern for multilevel chromatic encryption

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Science China chemistry 2023年第12期66卷 3567-3575页

作者： Jing Xue Yu Wang Tailong Zhang Kaixuan Li Florian Vogelbacher Yu Zhang Xiaoyu Hou Zixin Zhu Yang Tian Yanlin Song Mingzhu Li key laboratory of Green Printing Institute of ChemistryChinese Academy of SciencesBeijing 100190China key laboratory of Bionic materials and Interface Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China beijing key laboratory for optical materials and photonic devices Department of ChemistryCapital Normal UniversityBeijing 100048China

In the realm of modern cryptography and anti-counterfeiting,innovative approaches are crucial to encode sensitive information securely.Tailored responsive structural colors have garnered significant interest due to their feature-rich spectra and high sensitivity to external stimuli.However,high costs and complex processing involved in integrating the various delicate microstructures have impeded their widespread development.In this study,we present a straightforward multilevel chromatic encryption scheme utilizing direct-writing gradient-crosslinked microdomes.The solvent-responsive structural color of each microdome,arising from the synergistic effect of total internal reflections and interference,is adjusted independently across the entire visible region.Each microdome functions as a signal recording unit,enabling multilevel color variations through a solventdependent development step.This approach facilitates the encoding of enhanced information into a single pixel.To demonstrate the efficacy of our method for advanced applications,we have prepared a collection of solvent-dependent multilevel codes for algorithm cryptography,showcasing its potential for high-level anti-counterfeiting and high-density optical data storage.

关键词： oxygen inhibition structural color direct writing encryption storage capacity

Tunable amplified spontaneous emissions by dimensional-controlled microcrystal synthesis

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Chinese Chemical Letters 2018年第1期29卷 209-212页

作者： Hui-Ying Liu Ye-Fen Li Qing-Gang Gao Zhen-Dong Liu Hong-Bing Fu School of materials Science and Engineering Beijing Institute of Fashion Technology beijing key laboratory for optical materials and photonic devices Department of ChemistryCapital Normal University

The excited-state intramolecular proton transfer molecules based on chalcone （E）-3-（4＇-dimethylami- nophenyl）-l-（4＇-fluoro-2＇-hydroxyphenyl）-2-propen-l-one （DMF-HPPO） have been synthesized under microwave irradiation. One-dimensional （1D） microwires and 2D microdisks of DMF-HPPO have been selectively prepared by controlling the solution polarity. XRD results revealed the two microcrystals exhibit distinct diffraction patterns, which indicates that they have belonged to different crystalline nature. The microcrystals demonstrate shape-dependent amplified spontaneous emissions （ASE） that the emission of ID microwire is central around 618 nm and the 2D microdisk emits fluorescence at 650 nm. This result reveals the controlled synthesis of two microcrystals and their consequent multicolor amplified spontaneous emission, providing considerable promise for the development and application of new opto-electronic devices.

关键词： Amplified spontaneous emissionSelf-assemblyMicrostructuresLuminescenceoptical properties

Efficient Small-Molecule Organic Solar Cells by Modulating Fluorine Substitution Position of Donor Material

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Chinese Journal of chemistry 2023年第7期41卷 755-762页

作者： Tao Zhang Qianglong Lv Zhongxiang Peng Cunbin An Pengqing Bi Ye Xu Ni Yang Jingwen Wang Kaihu Xian Long Ye Shaoqing Zhang Jianhui Hou State key laboratory of Polymer Physics and chemistry Beijing National Laboratory for Molecular SciencesCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190 China University of Chinese Academy of Sciences Beijing100049 China School of materials Science&Engineering Tianjin Key Laboratory of Molecular Optoelectronic SciencesTianjin Universityand Collaborative Innovation Center of Chemical Science and EngineeringTianjin300350 China beijing key laboratory for optical materials and photonic devices Department of ChemistryCapital Normal UniversityBeijing100048 China

Comprehensive Summary The fluorine substitution position in organic semiconductors is critical in improving device performance for organic solar cells(OSCs).Herein,two similar small-molecule donors,B3T-PoF and B3T-PmF,are designed and synthesized,which only differ on the fluorine substitution position on the pendent benzene unit.Although both small-molecule donors exhibit similar absorption profiles and molecular energy levels,B3T-PmF has stronger crystallinity and lower energetic disorder than B3T-PoF.After blending with the non-fullerene acceptor of BO-4Cl,B3T-PmF shows better phase separation and more ordered molecular packing in blend film.As a result,the B3T-PoF:BO-4Cl-based OSC shows a power conversion efficiency(PCE)of 12.3%.In contrast,the B3T-PmF:BO-4Cl-based cell demonstrates obviously increased JSC and FF values,thus yielding an excellent PCE of 14.7%.This study indicates that reasonable selection of fluorine atom substitution position in conjugated side chains is one of the promising strategies for achieving high-performance SM-DSCs.

关键词： Organic solar cell Small-molecule donor Fluorine substitution Morphology Miscibility

Aromaticity Concerto in Polycyclic Conjugated Hydrocarbons:Fusion Pattern on Combined Aromaticity Strategy Leads to Distinctive Excited State Photophysics of Dinaphthopentalenes

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CCS chemistry 2023年第10期5卷 2264-2276页

作者： Long Wang Lu Lin Teng-Shuo Zhang Shaoting Guo Zuyuan Liu Mengfan Zhang Senhao Wang Ganglong Cui Wei-Hai Fang Jun Zhu Hongbing Fu Jiannian Yao key laboratory of Interface Science and Engineering in Advanced materials Ministry of EducationCollege of ChemistryTaiyuan University of TechnologyTaiyuan 030024 State key laboratory of Physical chemistry of Solid Surfaces Fujian Provincial Key Laboratory of Theoretical and Computational ChemistryDepartment of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005 State key laboratory Breeding Base of Green chemistry-Synthesis Technology College of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014 key laboratory of Theoretical and Computational Photochemistry Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875 beijing key laboratory for optical materials and photonic devices Department of ChemistryCapital Normal UniversityBeijing 100048 beijing National laboratory for Molecules Science Key Laboratory of PhotochemistryInstitute of ChemistryChinese Academy of SciencesBeijing 100190

Understanding the structure-property relationships in polycyclic conjugated hydrocarbons(PCHs)is crucial in controlling their electronic properties and developing new optically functional materials.Aromaticity is a fundamentally important and intriguing property of numerous organic chemical structures and has stimulated a myriad of experimental and theoretical investigations.Exploiting aromaticity rules for the rational design of optoelectronic materials with the desired photophysical characteristics is a challenging yet fascinating task.Herein we present an in-depth computational and spectroscopic study on the structure-property relationships of dinaphthopentalenes(DNPs).Results highlight that the different fusion patterns between 4nπand 4n+2πunits endow these PCHs with the tunable aromaticity in the ground state/excited state,which leads to the diverse electronic structures and consequently the distinctive excited state photophysics.Accordingly,we propose a combined aromaticity design strategy for rationally modulating and tailoring electronic and optical properties of PCH skeletons.These outcomes not only present a full picture of the excited state dynamics of the DNP system and afford a new class of efficient singlet fission-active materials but also provide some basic guidelines for exploiting aromaticity rules to design and develop new optical function materials.

关键词： polycyclic conjugated hydrocarbon aromaticity fusion pattern excited state photophysics singlet fission combined aromaticity design strategy optical function materials

The marriage of dual-acceptor strategy and C-H activation polymerization:naphthalene diimide-based n-type polymers with adjustable molar mass and decent performance

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Science China chemistry 2023年第2期66卷 548-561页

作者： Ying-Han Zhao Wenhao Li Tao Shen Yan Zhao Yunqi Liu Yang Wang laboratory of Molecular materials and devices Department of Materials ScienceFudan UniversityShanghai200438China beijing National laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China

The development of readily accessible high-mobility n-type semiconducting polymers is in great demand for realizing highperformance p-n junction-based organic electronics.In this study,we demonstrate that with the combination of dual-acceptor strategy and C-H direct arylation polymerization(DAr P),unipolar n-type semiconducting polymers can be conveniently synthesized.By tuning the monomer concentration,three dual-acceptor polymers,namely,poly(naphthalene diimide-alt-dithiophenyl pyrrolopyrrole-dione)(PNDI-DPP),poly(naphthalene diimide-alt-dithiophenyl isoindigo)(PNDI-IID),and poly(naphthalene diimide-alt-dithiophenyl bezothiadiazole)(PNDI-BT)can be obtained via C-H activation with decent number average molecular weight of~10 to 30 kg mol^(-1)and relatively narrow polydispersity index of~2.In addition,these polymers are defect-free in nature as evidenced by the nuclear magnetic resonance.Moreover,we attribute the different molar masses of the three copolymers under the same DAr P condition to the differentα-C-H acidity,which may stem from different electronwithdrawing capability of the hydrogenated acceptor units.Furthermore,the influence of the hydrogenated acceptor monomers on the optical,electrochemical and charge transporting properties is comprehensively studied.Among the three dual-acceptor polymers,PNDI-BT demonstrates the highest electron mobilities of up to 0.6 cm^(2)V^(-1)s^(-1)in unipolar n-type organic transistors because of its relatively planar backbone,larger overlaps of the lowest unoccupied molecular orbital and strong H-aggregation.Note that the transistor performance of PNDI-BT synthesized via C-H activation in this study is at least comparable to the one made by conventional C(sp^(2))-C(sp^(2))Stille or Suzuki cross-coupling polymerization.This study demonstrates the presented protocol can be a useful platform for sustainable and convenient synthesis of high-performance n-type semiconducting polymers.

关键词： n-type polymers C-H activation dual-acceptor strategy naphthalene diimide organic thin-film transistors

Regulating the dimensionality of diphosphaperylenediimide-based polymers by coordinating the out-of-plane anisotropic π-framework toward Ag^(+)

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Science China chemistry 2022年第9期65卷 1741-1748页

作者： Zetong Ma Yujian Liu Shengdong Wang Jiadong Zhou Zhaohui Wang Wei Jiang key laboratory of Organic Optoelectronics and Molecular Engineering Department of ChemistryTsinghua UniversityBeijing 100084China Institute of Polymer Optoelectronic materials and devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China

The development of hetero-π-conjugated molecules is of significance for constructing diverse assembling superstructures based on heteroatom-related bonded or nonbonded interactions.Herein,we developed one-pot P-heteroannulation via palladiumcatalyzed dual P-C bonds formation and subsequent sulfidation to construct two isomeric diphosphaperylenediimides(cis-5 and trans-5).The unique out-of-plane anisotropic π-framework induced a cumulative anisotropy with a dipole moment of up to 8.82 D for cis-5,leading to distinct supramolecular packing arrangements.optical and electrochemical characterizations demonstrated that they showed the largest redshifts extending to 574 nm and rather low-lying LUMO levels of −4.41 eV.Furthermore,the introduced P=S moieties endowed these diphosphaperylenediimides with prominent coordination ability towards Ag^(+),and thus the first example of perylene diimide(PDI)core-involved metal-organic coordination polymers(MOCPs)with tunable dimensionality varying from 1D,2D,to 3D was tactfully achieved.In view of easy accessibility and 2D layered porous structure,thus 2D(trans-5)·(AgOTf)based MOCP showed high crystallinity and good CO_(2) adsorption capacity with surface area of 112 m^(2)/g.The result opens a span-new avenue for exploring rylene imide-based MOCPs and related properties by integrating P functionality.

关键词： metal-organic coordination polymers perylene diimides phosphorous heteroannulation dimensionality gas adsorption

Organic nanoparticles with ultrahigh stimulated emission depletion efficiency for low-power STED nanoscopy

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Organic nanoparticles with ultrahigh stimulated emission dep...