Multi-color solid-state emission of β-iminoenolate boron complexes tuned by methoxyl groups: aggregation-induced emission and mechanofluorochromism

RSC Advances ◽  
2016 ◽  
Vol 6 (49) ◽  
pp. 43755-43766 ◽  
Author(s):  
Zhenqi Zhang ◽  
Zhu Wu ◽  
Jingbo Sun ◽  
Pengchong Xue ◽  
Ran Lu
Keyword(s):  
Solid State ◽  
Aggregation Induced Emission ◽  
Solid States ◽  
Strong Luminescence ◽  
Boron Complexes

New β-iminoenolate boron complexes bearing benzoxazole were synthesized, and they exhibited strong luminescence in solid states.

Strategy to enhance solid-state fluorescence and aggregation-induced emission enhancement effect in pyrimidine boron complexes

2015 ◽  
Vol 44 (7) ◽  
pp. 3326-3341 ◽  
Author(s):  
Yasuhiro Kubota ◽  
Kouhei Kasatani ◽  
Hiroki Takai ◽  
Kazumasa Funabiki ◽  
Masaki Matsui
Keyword(s):  
Solid State ◽  
Enhancement Effect ◽  
Strong Fluorescence ◽  
Aggregation Induced Emission ◽  
Emission Enhancement ◽  
Boron Complexes ◽  
Solid State Fluorescence

Although non-, trifluoromethyl-, and cyano-substituted derivatives showed AIEE effects, methoxy- and dimethylamino-substituted analogues resulted in relatively strong fluorescence in solution.

Carbazole-modified thiazolo[3,2-c][1,3,5,2]oxadiazaborinines exhibiting aggregation-induced emission and mechanofluorochromism

2021 ◽  
Author(s):  
Mykhaylo A. Potopnyk ◽  
Mykola Kravets ◽  
Roman Luboradzki ◽  
Dmytro Volyniuk ◽  
Volodymyr Sashuk ◽  
...  
Keyword(s):  
Solid State ◽  
Fluorescence Properties ◽  
Aggregation Induced Emission ◽  
Donor Acceptor ◽  
Solid State Fluorescence ◽  
Active Donor

Two novel AIE-active donor–acceptor organoboron complexes with a carbazole donor unit are developed and their morphology-dependent solid-state fluorescence properties are established.

An aggregation-induced emission (AIE)-active fluorescent chemodosimeter for selective sensing of hypochlorite in water and solid state: Endogenous detection of hypochlorite in live cells

2021 ◽  
Vol 196 ◽  
pp. 109758
Author(s):  
Sandip Kumar Samanta ◽  
Kalipada Maiti ◽  
Saikat Kumar Manna ◽  
Syed Samim Ali ◽  
Uday Narayan Guria ◽  
...  
Keyword(s):  
Solid State ◽  
Live Cells ◽  
Aggregation Induced Emission ◽  
Fluorescent Chemodosimeter

scholarly journals Synthesis of a Benzothiadiazole-Based D−A Molecule with Aggregation-Induced Emission and Controlled Assembly Properties

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1094
Author(s):  
Songhua Chen ◽  
Yongqi Liu ◽  
Meiyun He ◽  
Jianhua Huang
Keyword(s):  
Synergistic Effects ◽  
Preparation Methods ◽  
Solvent Vapor ◽  
Aggregation Induced Emission ◽  
Solid States ◽  
Diluted Solution ◽  
Non Covalent Interactions ◽  
Fluorescent Quantum Yield ◽  
Donor Moiety ◽  
Covalent Interactions

An electron-donating−accepting (D−A) molecule, namely, 4-(1-(4-(9H-carbazol-9-yl)phenyl)-1H-1,2,3-triazol-4-yl)benzo[c][1,2,5]thiadiazole (BT-SCC) containing carbazole as the donor moiety and benzothiadiazole as the acceptor moiety is prepared. Single-crystal X-ray structure analysis elucidated the multiple intermolecular interactions, such as hydrogen bonds, CH…π, and π…π interplays. Interestingly, the aggregation-induced emission phenomenon is observed for BT-SCC featured with enhanced fluorescent quantum yield from diluted solution of CH2Cl2 (Φ = ca. 0.1) to CH2Cl2/hexane mixed solutions or solid states (Φ = ca. 0.8). Finally, aggregates of BT-SCC are obtained through precipitating from hot and saturated solutions or solvent-vapor methods and the aggregating morphologies could be easily controlled through different preparation methods. Fabulous cube-like micro-crystals and nanospherical structures are obtained, which is established by the synergistic effects of the multiple non-covalent interactions, endowing potential utility in the field of optoelectronic devices.

Aggregation-induced emission in precursors to porous molecular crystals

2017 ◽  
Vol 53 (72) ◽  
pp. 10022-10025 ◽  
Author(s):  
Zhenglin Zhang ◽  
Mohamed I. Hashim ◽  
Ognjen Š. Miljanić
Keyword(s):  
Solid State ◽  
Molecular Crystals ◽  
Aggregation Induced Emission ◽  
Emission Behavior ◽  
Solid State Fluorescence

Trigonal fluorinated pyrazoles assemble into porous molecular crystals and show solid-state fluorescence. However, their emission behavior in solution is dramatically different.

scholarly journals EXPERIENTIAL LEARNING: AN ANALYSIS OF IMPACT ON ACADEMIC ACHIEVEMENT AMONG STUDENTS OF GRADE 12

2020 ◽  
Vol 8 (9) ◽  
pp. 188-199 ◽  
Author(s):  
Prashant Thote ◽  
Gowri S
Keyword(s):  
Academic Achievement ◽  
Solid State ◽  
Solid State Chemistry ◽  
Control Group ◽  
Study Group ◽  
Crystal Lattices ◽  
Solid States ◽  
Handmade Paper ◽  
Paper Model ◽  
Class Room

The molecular model as a learning tool in class-room instructions is significant due to its positive effect on the learning and teaching process.  Many students struggle to learn Chemistry and do not succeed.  Chemistry is the central part of all Science subjects. To make Chemistry learning easy and joyful appropriate method of class-room instructions are important.  The Chemistry of solid states and composite materials is the part of the curriculum at All India Senior Secondary School Curriculum. Students face problems in solid state Chemistry due to its abstract concepts.  To address the issue, handmade models and paper-based models are made as evidence-based learning. In this present paper attempt is made to investigate the impact of handmade paper model of unit cell and crystal lattices of solid-state Chemistry on academic achievement. The study is delimited to the students of only one school in rural area. Totally 50 students participate in the study. Sample is distributed into two groups: study group and the control group, by connecting them on the basis of the previous knowledge which is determined through pre-test. The students of the study group are taught solid states Chemistry through handmade paper models of unit cells and crystal lattices and the students of the control group are taught by using traditional chalk and board method.  Data is collected by using Test (Pre and Post). Mean standard deviation and mean differences are used as a statistical tool to analyze the data. Substantial difference between the study group and the control group of mean score on test (pre and post and retention) are tested at 0.05 level.  The handmade paper model of unit cell and crystal lattices of solid states Chemistry has significant positive impact on the academic achievement in solid state Chemistry. Based on the findings of the present study, some recommendations are made for using paper model as teaching aid for evidence-based learning in Chemistry and other core subjects to move up the students’ academic performance level.

Charge-by-charge assemblies based on planar anion receptors

2010 ◽  
Vol 83 (1) ◽  
pp. 189-199 ◽  
Author(s):  
Hiromitsu Maeda ◽  
Yohei Haketa
Keyword(s):  
Solid State ◽  
Soft Materials ◽  
Inorganic Anions ◽  
Anion Receptors ◽  
Anion Receptor ◽  
Charged Species ◽  
Efficient Strategy ◽  
Boron Complexes ◽  
Anion Complexes ◽  
Critical Overview

This critical overview proposes a new concept, a charge-by-charge assembly, which consists of alternately stacked positively and negatively charged species, by introducing examples of planar anionic structures in the solid state. The preparation of planar organic anions is not easy; however, complexation of planar anion receptor molecules with inorganic anions is found to be an efficient strategy for constructing them. As suitable motifs, dipyrrolyldiketone boron complexes exhibit various receptor–anion complexes and charge-by-charge assemblies in the solid state. The concept discussed here can be applied to useful soft materials as well as crystals by modifying the anion receptors and cations.

Synthesis and Spectroscopic Characteristics of Ligands Based on Quinolin-8-Ol as Useful Precursors for Alq3 Type Complexes

2021 ◽  
Vol 903 ◽  
pp. 168-173
Author(s):  
Elmārs Zariņš ◽  
Deins Alksnis ◽  
Patricija Paulsone ◽  
Karlis Balodis ◽  
Aivars Vembris ◽  
...  
Keyword(s):  
Solid State ◽  
Light Emission ◽  
Emission Property ◽  
Blue Luminescence ◽  
Reaction Conditions ◽  
Aggregation Induced Emission ◽  
Chemical Structures ◽  
Emission Enhancement ◽  
Spectroscopic Characteristics ◽  
Reliable Methods

In order to develop reliable methods for the synthesis of various 5-substituted-8-oxyquinoline derivatives for the preparation of Alq3-type complexes, we have improved the reaction conditions on some syntheses described in the literature, successfully synthesized new ligands based on quinolin-8-ol and characterized their chemical structures by NMR. Some of the synthesized quinolin-8-ol derivatives containing incorporated bulky triphenyl or tert-butyl groups showed blue luminescence in the solid state due to the possible aggregation induced emission enhancement (AIEE) with a maximum wavelength around 510 nm. More detailed light-emission property investigation of the mentioned bulky group containing compounds is currently underway.

AIE-Active Macromolecules: Designs, Performances, and Applications

2021 ◽  
Author(s):  
Fei Zhang ◽  
Hui Xie ◽  
Bing Guo ◽  
Caizhen Zhu ◽  
Jian Xu
Keyword(s):  
High Brightness ◽  
Aggregation Induced Emission ◽  
Solid States

Macromolecules with aggregation-induced emission (AIE) characteristics as emerging soft lumesencet materials have gained increasing attention owing to their facile formulation, good processability, high brightness in aggregate and solid states, wide...

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