Accessing Tunable Afterglows from Highly Twisted Organic AIEgens via Effective Through-Space Conjugation

2020 ◽  
Author(s):  
Shuyuan Zheng ◽  
Tianwen Zhu ◽  
Yunzhong Wang ◽  
Tianjia Yang ◽  
Wang Zhang Yuan
Keyword(s):  
Single Crystals ◽  
Rational Design ◽  
Proof Of Concept ◽  
Aggregation Induced Emission ◽  
Concept Application

Nonaromatic, cross-conjugated, and highly twisted luminogens consisting of acylated succinimides demonstrate aggregation-induced emission (AIE) characteristics and tunable multicolor photoluminescence and afterglows in their single crystals. Effective through-space conjugation among different moieties bearing n/π electrons promote the SOC and ISC transitions and lead to diverse emissive clusters with concurrently rigidified conformations, thus allowing readily tunable emissions. Derived from it, the proof of concept application for advanced anti-counterfeiting is illustrated. These results should spur the rational design of novel nonaromatic AIEgens, and moreover advance the understanding of the origin of tunable multicolor afterglows.

Accessing Tunable Afterglows from Highly Twisted Organic AIEgens via Effective Through-Space Conjugation

2020 ◽  
Author(s):  
Shuyuan Zheng ◽  
Tianwen Zhu ◽  
Yunzhong Wang ◽  
Tianjia Yang ◽  
Wang Zhang Yuan
Keyword(s):  
Single Crystals ◽  
Rational Design ◽  
Proof Of Concept ◽  
Aggregation Induced Emission ◽  
Concept Application

Nonaromatic, cross-conjugated, and highly twisted luminogens consisting of acylated succinimides demonstrate aggregation-induced emission (AIE) characteristics and tunable multicolor photoluminescence and afterglows in their single crystals. Effective through-space conjugation among different moieties bearing n/π electrons promote the SOC and ISC transitions and lead to diverse emissive clusters with concurrently rigidified conformations, thus allowing readily tunable emissions. Derived from it, the proof of concept application for advanced anti-counterfeiting is illustrated. These results should spur the rational design of novel nonaromatic AIEgens, and moreover advance the understanding of the origin of tunable multicolor afterglows.

Sulfur-Mediated Reactions through Sulfonium Salts and Ylides

Synlett ◽  
2021 ◽  
Author(s):  
Pingfan Li
Keyword(s):  
Transition Metal ◽  
Rational Design ◽  
Acid Catalysis ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Bronsted Acid ◽  
Proof Of Concept ◽  
Sulfonium Salts ◽  
Brönsted Acid ◽  
Sulfonium Ylides

AbstractThis Account discusses several new reaction methods developed in our group that utilize sulfur-mediated reactions through sulfonium salts and ylides, highlighting the interplay of rational design and serendipity. Our initial goal was to convert aliphatic C–H bonds into C–C bonds site-selectively, and without the use of transition-metal catalysts. While a proof-of-concept has been achieved, this target is far from being ideally realized. The unexpected discovery of an anti-Markovnikov rearrangement and subsequent studies on difunctionalization of alkynes were much more straightforward, and eventually led to the new possibility of asymmetric N–H insertion of sulfonium ylides through Brønsted acid catalysis.1 Introduction2 Allylic/Propargylic C–H Functionalization3 Anti-Markovnikov Rearrangement4 Difunctionalization of Alkynes5 Asymmetric N–H Insertion of Sulfonium Ylides6 Conclusion

Rational design of HA-AuNPs@AIEDs nanoassembly for activatable fluorescence detection of HAase and imaging in tumor cells.

2021 ◽  
Author(s):  
Shenglan Wang ◽  
Chong-Hua Zhang ◽  
Peisheng Zhang ◽  
Shu Chen ◽  
Zhi-ling Song ◽  
...  
Keyword(s):  
Optical Properties ◽  
Tumor Cells ◽  
Fluorescence Detection ◽  
Rational Design ◽  
High Brightness ◽  
Aggregation Induced Emission ◽  
Fluorescence Bioimaging ◽  
In Virtue Of

Aggregation induced emission (AIE) dots have gained broad attention in fluorescence bioimaging and biosensor in virtue of their distinctive optical properties of splendid biocompatibility, high brightness and good photostability. However,...

scholarly journals Herbaria Mundi: An image centric approach to manipulation of specimens from multiple collections

2020 ◽  
Vol 4 ◽  
Author(s):  
Roger Hyam
Keyword(s):  
User Interface ◽  
Proof Of Concept ◽  
Virus Spread ◽  
Biodiversity Crisis ◽  
International Image ◽  
Voucher Specimens ◽  
Tropical Areas ◽  
Concept Application ◽  
Extensive Reference ◽  
As If

Addressing the challenges of the Climate Emergency and the Biodiversity Crisis requires us to understand how the world's vegetation is changing. This is not a trivial task,especially in highly diverse tropical areas. Frequently, the only way to characterise vegetation is to make voucher specimens of the plants present and identify them later in the lab. Fortunately there are extensive reference collections carefully curated in herbaria. Unfortunately specimens and expertise are dispersed over hundreds of different herbaria spread across many countries. It would be more efficient if scientists could see and manipulate specimens independently of where they are stored, especially as travel becomes more difficult due to both the need to reduce carbon emissions and virus spread. Herbaria Mundi is an application demonstrating how how this can be achieved using CETAF Specimen IDs and IIIF (International Image Interoperability Framework). The application mimics the way a botanist might work in a physical herbarium by enabling the gathering of specimens into groups and side-by-side comparison of specimens, but differs in that one can search for and manipulate specimens in multiple herbaria as if they were stored in a single collection. Voucher specimens are often not added to herbaria mainly because they do not add enough value to material already in the collections. Herbaria Mundi therefore includes the ability for researchers to upload specimen images to Zenodo and for them to appear in the user interface as if they were in an institutional herbarium. This proof of concept application is being developed as part of Task 4.3 of the Synthesys+ project funded by the European Commission. Two things need to occur to take this concept into production. More herbaria need to adopt the use of CETAF specimen identifiers and the IIIF image API. Botanists need to prioritise which features they would like developed first. More herbaria need to adopt the use of CETAF specimen identifiers and the IIIF image API. Botanists need to prioritise which features they would like developed first. The poster will be a catalyst to discuss how these things can be achieved.

scholarly journals Rational design of aggregation-induced emission sensor based on Rhodamine B for turn-on sensing of trivalent metal cations, reversible data protection, and bioimaging

2019 ◽  
Vol 3 (1) ◽  
pp. 151-160 ◽  
Author(s):  
Hai-Xia Yu ◽  
Junge Zhi ◽  
Zheng-Feng Chang ◽  
Tianjiao Shen ◽  
Wei-Lu Ding ◽  
...  
Keyword(s):  
Rhodamine B ◽  
Data Protection ◽  
Rational Design ◽  
Thiophene Ring ◽  
Metal Cations ◽  
Trivalent Metal ◽  
Active Molecule ◽  
Aggregation Induced Emission ◽  
Turn On

A novel AIE-active molecule (TPEThRB) composed of a tetraphenylethene unit as a AIE factor, Rhodamine spirolactam as a receptor, and thiophene ring as a conjugated electron-rich linker was obtained.

Rational design of thermally activated delayed fluorescence emitters with aggregation-induced emission employing combined charge transfer pathways for fabricating efficient non-doped OLEDs

2019 ◽  
Vol 7 (30) ◽  
pp. 9413-9422 ◽  
Author(s):  
Fulong Ma ◽  
Yu Cheng ◽  
Yu Zheng ◽  
Hefang Ji ◽  
Kamran Hasrat ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Rational Design ◽  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Aggregation Induced Emission ◽  
Thermally Activated

Achieving combined charge transfer pathways in novel thermally activated delayed fluorescence emitters with aggregation-induced emission features.

scholarly journals Alkoxy-functionalized ionic liquid electrolytes: understanding ionic coordination of calcium ion speciation for the rational design of calcium electrolytes

2020 ◽  
Vol 13 (8) ◽  
pp. 2559-2569
Author(s):  
Xinpei Gao ◽  
Xu Liu ◽  
Alessandro Mariani ◽  
Giuseppe Antonio Elia ◽  
Manuel Lechner ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Calcium Ion ◽  
Rational Design ◽  
Proof Of Concept ◽  
Functionalized Ionic Liquid ◽  
Liquid Electrolytes

The proof-of-concept demonstration of a rechargeable Ca/V2O5 cell is given, taking advantage of an alkoxy-functionalized ionic liquid-based electrolyte enabling the displacement of the anions from the coordination of the Ca2+ cations.

Rational Design of Helical Columnar Packing in Single Crystals

2004 ◽  
Vol 43 (15) ◽  
pp. 1972-1975 ◽  
Author(s):  
Zhaohui Wang ◽  
Volker Enkelmann ◽  
Fabrizia Negri ◽  
Klaus Müllen
Keyword(s):  
Single Crystals ◽  
Rational Design
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