This paper reports the first universal and versatile database on aggregate materials for the field of aggregate science research.At the current stage,the database(http://119.91.135.188:8080/)contains over 1000 entries...This paper reports the first universal and versatile database on aggregate materials for the field of aggregate science research.At the current stage,the database(http://119.91.135.188:8080/)contains over 1000 entries of organic aggregate material systems(mainly luminescent systems at the current stage)with a unique data structure which is designed particularly for aggregate materials and containing the photophysics and physicochemical properties of the compounds in different statuses of aggregation,including dilute solution form,pristine solid-state,stable crystalline,and nanoaggregates formed in solvents.The web-based interface of the database provided functions to index,search,manipulate,fetch and deposit data entries.In addition,a background calculation service optimizes the chemical structure of new entries on different levels of accuracies.The database also provided background API for interactive developments of prediction or regression models based on machine-learning algorithms.展开更多
Despite extensive investigations into photophysics at the molecular level,the complex interplays between intermolecular interactions,hierarchical assembly,and photoluminescence properties remain a fundamental challeng...Despite extensive investigations into photophysics at the molecular level,the complex interplays between intermolecular interactions,hierarchical assembly,and photoluminescence properties remain a fundamental challenge in materials science,particularly concerning emergent phenomena in molecular aggregates.Herein,we construct different dimeric structures in both solution and aggregate states through cycloreversion upon photoirradiation from a series of nonemissive phenanthrene cycloadducts,exhibiting state-dependent photoactivatable luminescence.Specifically,the excimer in solution is nonemissive due to its antiparallel cofacial structure.In contrast,the dimer in the crystal exhibits nonclassical excimer emission according to its cross-stacked stacking within the restriction of the crystal lattice.Prominently,the luminescent behavior in aggregate is uniquely accessible through photocycloreversion and cannot be achieved through spontaneous crystallization of their parent phenanthrene molecules.Moreover,the photoactivatable nature of these materials is successfully demonstrated in thin films,showcasing their potential applications in information encryption.This work expands the possibilities for constructing new functional aggregate materials by photochemistry and deepens our understanding of dimer-luminescence relationships in different states.展开更多
Aggregate science has led to the existence of functional properties at the aggregate level that significantly differs from those of corresponding single-molecule species,leading to a number of novel conceptual materia...Aggregate science has led to the existence of functional properties at the aggregate level that significantly differs from those of corresponding single-molecule species,leading to a number of novel conceptual materials with state-dependent functionality.For developing such materials,new molecular scaffolds that allow modulating the structural and functional properties of aggregates in a controlled manner could be extremely helpful.In this study,we report a class of spiro-fused bicyclo[3,2,2]octatriene triptycene derivatives with a unique 3 D molecular scaffolding structure that displays aggregation-induced emission(AIE)activity with bright solid-state blue luminescence.The core scaffold features a Y-shaped bicyclo[3,2,2]octatriene backbone and a vertical crossover arrangement of adjacent spiro-conjugated rings.Unlike classic bicyclo[2,2,2]octatrienes with high rigidity,this stereoscopic bicyclo[3,2,2]octatriene containing a seven-membered ring allows retaining certain flexibility in the molecular scaffold,which results in a weak fluorescence in dilute solutions(Φ_(F)<10%).However,the corresponding molecular aggregates emit intense fluorescence(Φ_(F)=50%-75%)and show prominent AIE activity because of the restriction of intramolecular scaffold motions.Moreover,in principle,these stereoscopic scaffold constructions with partially restricted flexibility facilitate the assembly of multiple different crystalline packing structures in both porous and nonporous forms depending on the growth conditions of crystalline aggregates.The obtained crystals with regular voids(12.85×6.89Aeach)show reversible luminescence in response to the adsorption/desorption of iodine vapor.These materials based on an unusual 3 D scaffold exhibit a high degree of structural modulation at the aggregate level and demonstrate potential applications in chemical sensing and flexible optoelectronics,which may open up the exploration of highly stereoscopic molecular building blocks for developing functional aggregates.展开更多
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 in...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.展开更多
Circularly polarized luminescence(CPL)originates from the chiral emissive excited states.CPL materials have promising applications in 3D optical displays,encryptions,biological probes,chiral photoelectric devices,and ...Circularly polarized luminescence(CPL)originates from the chiral emissive excited states.CPL materials have promising applications in 3D optical displays,encryptions,biological probes,chiral photoelectric devices,and CPL switches,most of which require excellent CPL performances including bright luminescence and high luminescence dissymmetry factor(glum)in the agglomerate state.This review systematically summarizes the progress about CPL of aggregate and solid materials,such as organic materials,metal-organic materials(such as coordination polymers,organic-inorganic metal halides,metal clusters,and cluster-assembled materials),the assembled materials by supramolecular interactions,and liquid crystals.We also present the current challenges and a future perspective of chiral emitting agglomerate materials.展开更多
基金the National Science Foundation of China,Grant/Award Numbers:21975077,52003228,21788102Shenzhen Key Laboratory of Functional Aggregate Materials,Grant/Award Number:ZDSYS20211021111400001+1 种基金the Science and Technology Plan of Shenzhen,Grant/Award Number:JCYJ2021324134613038Open Fund of Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates,Grant/Award Number:2019B030301003。
文摘This paper reports the first universal and versatile database on aggregate materials for the field of aggregate science research.At the current stage,the database(http://119.91.135.188:8080/)contains over 1000 entries of organic aggregate material systems(mainly luminescent systems at the current stage)with a unique data structure which is designed particularly for aggregate materials and containing the photophysics and physicochemical properties of the compounds in different statuses of aggregation,including dilute solution form,pristine solid-state,stable crystalline,and nanoaggregates formed in solvents.The web-based interface of the database provided functions to index,search,manipulate,fetch and deposit data entries.In addition,a background calculation service optimizes the chemical structure of new entries on different levels of accuracies.The database also provided background API for interactive developments of prediction or regression models based on machine-learning algorithms.
基金supported by the National Natural Science Foundation of China(52303382,52333007)Shenzhen Key Laboratory of Functional Aggregate Materials(ZDSYS20211021111400001)+2 种基金the Science Technology Innovation Commission of Shenzhen Municipality(KQTD20210811090142053,JCYJ20220530143805012)Shenzhen Science and Technology Program(grant no.2024SC0019)the 2022 Joint Fund Project between the Second Affiliated Hospital and the Chinese University of Hong Kong,Shenzhen(Special project of AIE Center).
文摘Despite extensive investigations into photophysics at the molecular level,the complex interplays between intermolecular interactions,hierarchical assembly,and photoluminescence properties remain a fundamental challenge in materials science,particularly concerning emergent phenomena in molecular aggregates.Herein,we construct different dimeric structures in both solution and aggregate states through cycloreversion upon photoirradiation from a series of nonemissive phenanthrene cycloadducts,exhibiting state-dependent photoactivatable luminescence.Specifically,the excimer in solution is nonemissive due to its antiparallel cofacial structure.In contrast,the dimer in the crystal exhibits nonclassical excimer emission according to its cross-stacked stacking within the restriction of the crystal lattice.Prominently,the luminescent behavior in aggregate is uniquely accessible through photocycloreversion and cannot be achieved through spontaneous crystallization of their parent phenanthrene molecules.Moreover,the photoactivatable nature of these materials is successfully demonstrated in thin films,showcasing their potential applications in information encryption.This work expands the possibilities for constructing new functional aggregate materials by photochemistry and deepens our understanding of dimer-luminescence relationships in different states.
基金supported by the National Key Research and Development Program of China(2020YFC1807302)the National Natural Science Foundation of China(51922039)+4 种基金the Science and Technology Innovation Program of Hunan Province(2020RC5033)the Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates(2019B03031003)Hunan Provincial Grant for Innovative Province Construction(2019RS2023)Shenzhen Science and Technology Program(RCJC20200714114434015)the Natural Science Foundation of Hunan Province(2020JJ3003)。
文摘Aggregate science has led to the existence of functional properties at the aggregate level that significantly differs from those of corresponding single-molecule species,leading to a number of novel conceptual materials with state-dependent functionality.For developing such materials,new molecular scaffolds that allow modulating the structural and functional properties of aggregates in a controlled manner could be extremely helpful.In this study,we report a class of spiro-fused bicyclo[3,2,2]octatriene triptycene derivatives with a unique 3 D molecular scaffolding structure that displays aggregation-induced emission(AIE)activity with bright solid-state blue luminescence.The core scaffold features a Y-shaped bicyclo[3,2,2]octatriene backbone and a vertical crossover arrangement of adjacent spiro-conjugated rings.Unlike classic bicyclo[2,2,2]octatrienes with high rigidity,this stereoscopic bicyclo[3,2,2]octatriene containing a seven-membered ring allows retaining certain flexibility in the molecular scaffold,which results in a weak fluorescence in dilute solutions(Φ_(F)<10%).However,the corresponding molecular aggregates emit intense fluorescence(Φ_(F)=50%-75%)and show prominent AIE activity because of the restriction of intramolecular scaffold motions.Moreover,in principle,these stereoscopic scaffold constructions with partially restricted flexibility facilitate the assembly of multiple different crystalline packing structures in both porous and nonporous forms depending on the growth conditions of crystalline aggregates.The obtained crystals with regular voids(12.85×6.89Aeach)show reversible luminescence in response to the adsorption/desorption of iodine vapor.These materials based on an unusual 3 D scaffold exhibit a high degree of structural modulation at the aggregate level and demonstrate potential applications in chemical sensing and flexible optoelectronics,which may open up the exploration of highly stereoscopic molecular building blocks for developing functional aggregates.
基金National Natural Science Foundation of China,Grant/Award Number:51903188Natural Science Foundation ofTianjin City,Grant/Award Number:19JCQNJC04500。
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.
基金National Natural Science Foundation of China,Grant/Award Numbers:92061201,21825106,21975065。
文摘Circularly polarized luminescence(CPL)originates from the chiral emissive excited states.CPL materials have promising applications in 3D optical displays,encryptions,biological probes,chiral photoelectric devices,and CPL switches,most of which require excellent CPL performances including bright luminescence and high luminescence dissymmetry factor(glum)in the agglomerate state.This review systematically summarizes the progress about CPL of aggregate and solid materials,such as organic materials,metal-organic materials(such as coordination polymers,organic-inorganic metal halides,metal clusters,and cluster-assembled materials),the assembled materials by supramolecular interactions,and liquid crystals.We also present the current challenges and a future perspective of chiral emitting agglomerate materials.
