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| 1 | Luminescence anti-counterfeiting:From elementary to advanced显示文摘Luminescence anti-counterfeiting derives from the easily changeable luminescence behaviors of luminescence materials under the regulation of various external stimuli(such as excitation light,chemical reagent,heat,and mechanical force,etc.)and luminescence lifetime,which plays an important role in preventing forgery of currency,artworks,and product brands.According to the numbers of changes of anti-counterfeiting labels under various regulation conditions,luminescence anti-counterfeiting can be classified into three levels from elementary to advanced:single-level anti-counterfeiting,double-level anti-counterfeiting,and multilevel anti-counterfeiting.In this review,the recent achievements in luminescence anti-counterfeiting are summarized,and the regulation of various factors to anti-counterfeiting labels is discussed.Finally,existing problems,future challenges,and possible development directions are proposed in order to realize facile,quick,low-cost,environmentally friendly,and difficult-to-replicate advanced luminescence anti-counterfeiting. | Xiaowei Yu Hongyue Zhang Jihong Yu | 2021 | Aggregate2021，2，1： | 4 |
| 2 | Recent progress on pure organic room temperature phosphorescent polymers显示文摘So far,pure organic room temperature phosphorescence(RTP)materials are developing rapidly and have become a research hotspot in the scientific community.They are regarded as valuable resources with great potential for development in many fields,such as biomedicine,information multi-level encryption,smart anticounterfeiting,and so on.Among them,a series of pure organic RTP polymer systems emerged at the right moment based on the excellent properties of polymers such as easy processing,low cost,and good biocompatibility.Furthermore,the huge molecular weight,long-chain intertwined structure,and potential interactions with phosphors of polymers make them a focus for RTP emission.Herein,we describe the development history of this system in detail,explore the necessary factors for highly efficient emission from the phosphorescence emission process,and based on the dual effects of enhancing phosphorescence emission and shortening luminescence lifetime brought by heavy atoms,we summarize the internal mechanism and achievements of various researches from the perspective of heavy atom–containing and non-heavy atom systems. | Hao Gao Xiang Ma | 2021 | Aggregate2021，2，4： | 3 |
| 3 | Molecular mechanism of aggregation-induced emission显示文摘Deep understanding of the inherent luminescence mechanism is essential for the development of aggregation-induced emission(AIE)materials and applications.We first note that the intermolecular excitonic coupling is much weaker in strength than the intramolecular electron-vibration coupling for a majority of newly termed AIEgens,which leads to the emission peak position insensitive to excitonic coupling,hence the conventional excitonic model for J-aggregation cannot effectively explain their AIE phenomena.Then,using multiscale computational approach coupled with our self-developed thermal vibration correlation function rate formalism and transition-state theory,we quantitatively investigate the aggregation effect on both the radiative and the nonradiative decays of molecular excited states.For radiative decay processes,we propose that the lowest excited state could convert from a transition dipole-forbidden“dark”state to a dipole-allowed“bright”state upon aggregation.For the radiationless processes,we demonstrate the blockage of nonradiative decay via vibration relaxation(BNR-VR)in harmonic region or the removal of nonradiative decay via isomerization(RNR-ISO)or minimum energy crossing point(RNR-MECP)beyond harmonic region in a variety of AIE aggregates.Our theoretical work not only justifies a plethora of experimental results but also makes reliable predictions on molecular design and mechanism that can be experimentally verified.Looking forward,we believe this review will benefit the deep understanding about the universality of AIE phenomenon and further extending the scope of AIE systems with novel applications. | Qian Peng Zhigang Shuai | 2021 | Aggregate2021，2，5： | 2 |
| 4 | Circularly polarized luminescent self-organized helical superstructures:From materials and stimulus-responsiveness to applications显示文摘Circularly polarized luminescence(CPL)has gained considerable attention in various systems and has rapidly developed into an emerging research field.To meet the needs of actual applications in diverse fields,a high luminescence dissymmetry factor(glum)and tunable optical performance of CPL would be the most urgent pursuit for researchers.Accordingly,many emerging CPL materials and various strategies have been developed to address these critical issues.Emissive cholesteric liquid crystals(CLCs),that is,luminescent self-organized helical superstructures,are considered to be ideal candidates for constructing CPL-active materials,as they not only exhibit high glum values,but also enable flexible optical control of CPL.This review mainly summarizes the characteristics of CPL based on CLCs as the bulk phase doped with different emitters,including aggregated induced emission molecules,conventional organic small molecules,polymer emitters,metal-organic complex emitters,and luminescent nanoparticles.In addition,the recent significant progress in stimulus-responsive CPL based on emissive CLCs in terms of several types of stimuli,including light,electricity,temperature,mechanical force,and multiple stimuli is presented.Finally,a short perspective on the opportunities and challenges associated with CPL-active materials based on the CLC field is provided.This review is anticipated to offer new insights and guidelines for developing CLC-based CPL-active materials for broader applications. | Yanrong He Siyang Lin Jinbao Guo Quan Li | 2021 | Aggregate2021，2，6： | 2 |
| 5 | Organic luminescent materials:The concentration on aggregates from aggregation-induced emission显示文摘The research of organic luminescent materials in aggregate has drawn more and more attention for their wide applications.To adjust the luminescent properties for aggregates,a deep understanding of the corresponding internal mechanism is needed.In this short review,a brief introduction of aggregation-induced emission(AIE)and some other solid state luminescence behaviors derived from or parallel to AIE is presented.Particularly,the relationship between emission property and intermolecular/intramolecular interactions is summarized,with the aim to guide the further development of organic optoelectronic materials in aggregate. | Jie Yang Manman Fang Zhen Li | 2020 | Aggregate2020，1，1： | 2 |
| 6 | Aggregation-induced emission systems involving supramolecular assembly显示文摘Aggregation-induced emission(AIE),as an exciting photophysical phenomenon,has been regarded as one frontier research topic within both ranges of molecular luminescence and materials science over the last two decades.Since controllable molecular ensembles with particular morphologies and tunable functions can be elegantly constructed in the realm of supramolecular chemistry,the integration of supramolecular assembly and AIE systems can expectedly bring about luminescent materials with tunable emission and tailorable well-ordered architectures.In this review,we will provide a summary of the creation and working mechanisms of AIE systems involving supramolecular systems that are driven by different supramolecular driving forces including hydrogen bonding,host−guest interactions,metal coordination,and π-π interactions.The morphological and photoluminescent features of these AIE-active supramolecular assemblies will be elucidated,and the regulated fluorescence properties of the AIEgens induced by the assembling-disassembling processes will be discussed in detail. | Xin-Yue Lou Ying-Wei Yang | 2020 | Aggregate2020，1，1： | 2 |
| 7 | Morphology optimization of photoactive layers in organic solar cells显示文摘Organic solar cells(OSCs)have unique advantages of light weight,low-cost solution processing,and capability to be fabricated into flexible and semitransparent devices,which are widely recognized as a promising photovoltaic technology.Photoactive layers of the OSCs are composed of a blend of a p-type organic semiconductor as a donor(D)and an n-type organic semiconductor as acceptor(A).The morphology of the active layer with D/A nano-scaled aggregation and face-onπconjugated packing,and D/A interpenetrating network is crucial for achieving high photovoltaic performance of the OSCs.Therefore,great efforts have been devoted to control and optimize morphology of the active layers.This perspective focuses on the morphological control by solvent/solid processing additives and the morphology optimization by postdeposition treatment with thermal annealing and/or solvent vapor annealing,which have been extensively adopted and exhibit promising positive effect in optimizing the morphology.Representative examples are given and discussed to understand the foundation of the postdeposition treatments on tuning the morphology.Insights into the role of the postdeposition treatments and additive treatments on the morphology optimization will be beneficial to further improvement in morphology optimization for practical organic photovoltaic application. | Chaohua Cui Yongfang Li | 2021 | Aggregate2021，2，2： | 2 |
| 8 | Aggregation and luminescence in carbonized polymer dots显示文摘The aggregate luminescence behavior of organic luminescent materials has been studied extensively.As a new kind of luminescent nanomaterials,carbonized polymer dots(CPDs)not only inherit the stability and biocompatibility of carbon materials,but also possess the luminescence tunability,water solubility,and high photoluminescence quantum yield of organic luminescent materials,rendering them a strong candidate for the next generation of light-emitting materials.Previously,people mainly understood its luminescence from the perspective of carbon materials,but some luminescence mechanisms are still unclear.In this review,we discuss the luminescence mechanism by referring to organic luminescent materials with emphasis on their aggregation behavior.Firstly,three representative aggregate luminescence phenomena of organic luminescent materials are briefly introduced.Chromophores present in CPDs are elaborated to further discuss the potential interactions between them,with emphasis on the role of crosslinked polymer networks.On this basis,some special luminescence phenomena of CPDs in the aggregate state are summarized,and relevant mechanisms are discussed in detail to consolidate relevant statements. | Chunyuan Kang Songyuan Tao Fan Yang Bai Yang | 2022 | Aggregate2022，3，2： | 2 |
| 9 | Achieving purely organic room temperature phosphorescence in aqueous solution显示文摘Purely organic room temperature phosphorescence(RTP)materials have aroused increasing interests in recent years and have been widely applied in anticounterfeiting,biological imaging,sensing,etc.Currently,these materials can be efficiently developed in crystalline states and amorphous polymer-doped systems.However,achieving organic RTP in solution,especially in water solution,is still a formidable challenge.Recently,reports on aqueous phase RTP have been increasing and some feasible design strategies have been proposed;however,related investigations are still limited and there is a lack of systematic reviews.Therefore,we summarized the recent cases of aqueous phase organic RTP emission with primarily focusing on the RTP properties and efficient design strategies(e.g.,forming nanoparticles from phosphorescent molecules and macrocyclic supramolecular assembly).Moreover,promising applications of the aqueous phase organic RTP emission in bio-imaging and sensing were discussed.Some detailed perspectives concerning materials design and application were provided with the hope to provide inspiration for the future development of aqueous phase organic RTP. | Hao Sun Liangliang Zhu | 2023 | Aggregate2023，4，1： | 2 |
| 10 | ESIPT-based AIE luminogens:Design strategies,applications,and mechanisms显示文摘In this review,we present a systematic and comprehensive summary of the recent development and applications of excited-state intramolecular proton transfer-based(ESIPT-based)aggregation-induced emission luminogens(AIEgens),a type of promising materials that inherit the advantages of ESIPT and AIE,such as large Stokes shift,excellent photostability,and low self-quenching.We first summarize the backbones that have been used to construct the ESIPT-based AIEgens and classify the constructed ones based on the relation between ESIPT and AIE unit.According to the sensing mechanisms and design strategies,we have reviewed the applications of ESIPT-based AIEgens in bioimaging,drug delivery systems,organic lightemitting diodes,photo-patterning,liquid crystal,and the detection of metal cations,anions,small molecules,biothiols,biological enzymes,latent fingerprinting,and so on.We have also reviewed the recent advances in the development of new theoretical methods for investigating molecular photochemistry in crystals and their applications in ESIPT-based AIEgens.We discussed the remaining challenges in this field and the issues that need to be addressed.We anticipate that this review can provide a comprehensive picture of the current condition of research in this field,and promote researchers to make more efforts to develop novel ESIPT-based AIEgens with new applications. | Panwang Zhou Keli Han | 2022 | Aggregate2022，3，5： | 2 |
| 11 | Influence of a long-term retarder on the hydration of clinker and eement显示文摘 | RICKERT J THIELEN G | 2004 | Cement Concrete and Aggregates2004，26，2： | 1 |
| 12 | Principles underlying production of high-performance concrete 显示文摘 | AITCIN P C | 1990 | Cem Concr Aggregate1990，12，2： | 1 |
| 13 | Influence of pnzzolanic slag, anti chemical admixtures on pore size distribution and permeability of hardened cement pastes 显示文摘 | Manmohan D Mehta P K | 1981 | Cement Concrete Aggregates1981，3，1： | 1 |
| 14 | Proposed universal accelerated test for alkali-aggregate recation the concrete microbar test 显示文摘 | Grattan-Bellew P E Cybanski G Fournier B | 2014 | Cement Concrete and Aggregates2014，25，2： | 1 |
| 15 | Measurement of the Alkali Content of Concrete Using Hot-Water Extraction显示文摘 | Berube M A Frenette J Rivest M | 2002 | Cement Concrete and Aggregate2002，24，1： | 1 |
| 16 | Enhancing photovoltaic performance via aggregation dynamics control in fused-ring electron acceptor显示文摘A new fused-ring electron acceptor FNIC3 with dynamics controlled aggregation behavior was synthesized.FNIC3 shows strong absorption in 600–900 nm,HOMO/LUMO energy levels of−5.59/−4.04 eV,and electron mobility of 1.2×10^(−3) cm^(2) V^(−1) s^(−1).The aggregation of FNIC3 shows strong dependency on film formation time.Prolongation of film formation time promotes the crystallization of FNIC3,leading to improved crystallinity and enlarged aggregate sizes.Aggregation of FNIC3 significantly influences the photovoltaic device parameters.Appropriate aggregation red-shifts the absorption and improves the mobilities of the blend,which contributes to high photocurrent and fill factor thus high power conversion efficiency(PCE).Overaggregation leads to increased nonradiative energy loss and insufficient charge generation,resulting in decreased open-circuit voltage and short-circuit current density.The blends based on PM6:FNIC3 fabricated under proper film formation time exhibit a PCE of 12.3%,higher than those fabricated under short and long film formation time(10.0–10.5%). | Jiayu Wang Runyu Zhu Shijie Wang Yawen Li Boyu Jia Jiadong Zhou Peiyao Xue Susanne Seibt Yuze Lin Zengqi Xie Wei Ma Xiaowei Zhan | 2021 | Aggregate2021，2，3： | 1 |
| 17 | Effect of controlled environmental conditions on durability index parameters of portland cement concretes 显示文摘 | Griesel E J Alexander M G | 2001 | Cement Concrete and Aggregates2001，23，1： | 1 |
| 18 | Mechanophore activation enhanced by hydrogen bonding of diarylurea motifs:An efficient supramolecular force-transducing system显示文摘Macromolecules are efficient as mechanical transducers for mechanically induced chemical bond cleavage reactions.Although various classes of polymers have been studied as effective mechanical-force transducers for mechanophores,alternatives to polymer chains,that is,small molecules,have rarely been studied.In this paper,the role of hydrogen bonding as small-molecule mechanical-force transducers for the activation of mechano-responsive molecular units(mechanophores)in the bulk is investigated.The introduction of diarylurea linkage motifs,which are known as strong hydrogen bonding groups,enhances the mechanochemical activation of the fluorescent mechanophore tetraarylsuccinonitrile(TASN)as effectively as the attachment of a typical macromolecular transducer.Electron paramagnetic resonance measurements of mechanically activated TASN with diphenyl urea motifs demonstrate its higher carbon–carbon bond dissociation ratio compared to that of TASN without diphenyl urea motifs.This efficient supramolecular-forcetransducing system represents a new concept in the field of mechanochemistry,namely,the enhancement of mechanochemical bond scission by simply changing the substituents of a mechanophore,even in small molecules. | Jumpei Kida Daisuke Aoki Hideyuki Otsuka | 2021 | Aggregate2021，2，3： | 1 |
| 19 | Intracellular aggregations of biological elements:From simple to complex显示文摘Most cellular elements could be functioned by forming aggregate structures through interactions with other molecules,which is like the luminescence mechanism of AIE molecules.However,in comparison to AIE molecules,the aggregation of biological elements appears to be more complex due to membership and mechanism,which is in line with the trend in biological evolution following the principle of simplicity to complexity.Here,we chose three distinctive examples because they differ significantly in their composition and show a progression from simple to complex,namely protein–protein complexes,protein–nucleic acid complexes,and protein–nucleic acid–lipid complexes.The majority of units that perform functions within cells belong to these three types.We discuss the formation mechanisms and related functions of the protein–protein complex(PML-NB),the proteins–nucleic acids complex ribosome,and the proteins–nucleic acids–lipids complex exosome,and hope to provide expert insight for related fields. | Fangzhou Li Xinmiao Lan Xing-Jie Liang | 2021 | Aggregate2021，2，3： | 1 |
| 20 | Dynamic carrier transports and low thermal conductivity in n-type layered InSe thermoelectrics显示文摘Semiconductor InSe with wide bandgap and layered crystal structure is expected to be a promising thermoelectric material,and its excellent plasticity brings great potential applications in flexible and wearable thermoelectric devices.To advance its thermoelectric performance,this work systematically investigates the carrier and phonon transport properties in n-type InSe.It is found that InSe compound presents an exceptional dynamic carrier transport property due to the amphoteric indium(In+and In^(3+)),which contributes to favorable temperature-dependent increasing carrier concentration.More importantly,with S alloying in InSe,the carrier concentration can be further enhanced from∼3.2×10^(13) cm–3 in InSe to∼4.8×10^(15) cm^(-3) in InSe_(0.97)S_(0.03) at 300 K,because S(χP∼2.58)with larger Pauling electronegativity than Se(χP∼2.55)can induce more In3+state to increase carrier concentration in matrix.This boosted dynamic carrier transport property benefits an obviously enhanced power factor.Additionally,InSe compound presents intrinsically low thermal conductivity∼1.6 W m^(-1) K^(-1) at 300 K due to low-symmetry crystal structure and strong anharmonicity.This work indicates that the special dynamic carrier transport property and intrinsically low thermal conductivity in InSe make it as a worthexpecting thermoelectric material. | Haonan Shi Dongyang Wang Yu Xiao Li-Dong Zhao | 2021 | Aggregate2021，2，4： | 1 |
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