scholarly journals Two-step Anti-cooperative Self-assembly Process into Defined π-Stacked Dye Oligomers: Insights into Aggregation-induced Enhanced Emission

2021 ◽  
Author(s):  
Yvonne Vonhausen ◽  
Andreas Lohr ◽  
Matthias Stolte ◽  
Frank Wuerthner
Keyword(s):  
Self Assembly ◽  
Fluorescence Properties ◽  
Assembly Process ◽  
Aggregation Induced Emission ◽  
Packing Structure ◽  
Emission Enhancement

Aggregation-induced emission enhancement (AIEE) phenomena received great popularity during the last decade but in most cases insights into the packing structure – fluorescence properties remained scarce. Here, an almost non-fluorescent...

The synthesis of chiral triphenylpyrrole derivatives and their aggregation-induced emission enhancement, aggregation-induced circular dichroism and helical self-assembly

RSC Advances ◽  
2016 ◽  
Vol 6 (28) ◽  
pp. 23420-23427 ◽  
Author(s):  
Kaichang Liang ◽  
Lichao Dong ◽  
Na Jin ◽  
Didi Chen ◽  
Xiao Feng ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Self Assembly ◽  
Induced Circular Dichroism ◽  
Circularly Polarized ◽  
Aggregation Induced Emission ◽  
Self Assembling ◽  
Emission Enhancement ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Circular Dichroïsm

AIEE-active chiral triphenylpyrrole derivatives possess aggregation-induced circular dichroism and circularly polarized luminescence features with self-assembling helical nanofibers.

Facile morphological control of fluorescent nano/microstructures via self-assembly and phase separation of trigonal azobenzenes showing aggregation-induced emission enhancement in polymer matrices

2015 ◽  
Vol 3 (16) ◽  
pp. 4093-4098 ◽  
Author(s):  
Mina Han ◽  
Yukikazu Takeoka ◽  
Takahiro Seki
Keyword(s):  
Phase Separation ◽  
Self Assembly ◽  
Polymer Matrices ◽  
Morphological Control ◽  
Aggregation Induced Emission ◽  
Emission Enhancement

We report a facile strategy for constructing diverse nano/microstructured morphologies via self-assembly and phase separation of trigonal azobenzene chromophores showing AIEE in polymer matrices.

scholarly journals Chiral Pentaphenylpyrrole Derivatives with Aggregation-Induced Emission Enhancement and Aggregation Induced Circular Dichroism and Their Helical Self-assembly

2021 ◽  
Vol 267 ◽  
pp. 02012
Author(s):  
Yuanyuan Wang ◽  
Longlong Zhang ◽  
Junge Zhi
Keyword(s):  
Circular Dichroism ◽  
Self Assembly ◽  
Nano Particles ◽  
Mixed Solution ◽  
Induced Circular Dichroism ◽  
Aggregation Induced Emission ◽  
Water Fraction ◽  
Chiral Compounds ◽  
Emission Enhancement ◽  
Circular Dichroïsm

A pair of enantiomers (S)-P5PdiAM and (R)-P5PdiAM containing two chiral substituents, and their raceme rac-P5PdiAM were synthesized by introducing (R)-/(S)- or racemic 1-phenylethylamine into 1-biphenyl-2,3,4,5-tetraphenylpyrrole. The target compounds all show weak aggregation-induced emission enhancement (AIEE) characteristics in the DMSO/H2O mixed system, indicating that the introduction of chirality hardly affect the photophysical properties of the compound. In addition, the chiral compounds (S)-P5PdiAM and (R)-P5PdiAM show strong circular dichroism (CD) signals in THF/H2O mixed solution with a water fraction of 70%, that is, they exhibit aggregation-induced circular dichroism characteristics (AICD). Because the aggregates of (S)-P5PdiAM and (R)-P5PdiAM emit weakly, there is no circularly polarized luminescence (CPL) signals upon aggregation. The chiral compounds (S)-P5PdiAM and (R)-P5PdiAM can self-assemble to form helical nanofibers in a THF/H2O mixture with a water fraction of 70%, while the racemic rac-P5PdiAM assembled to form nano-particles, indicating that chiral substituents have a great influence on the self-assembly and the morphologies of the nano-aggregates.

Monitoring layer-by-layer self-assembly process of natural polyelectrolytes by fluorescent bioconjugate with aggregation-induced emission characteristic

2014 ◽  
Vol 2 (47) ◽  
pp. 8406-8411 ◽  
Author(s):  
Jingwei Jia ◽  
Zhengke Wang ◽  
Wentao Lu ◽  
Ling Yang ◽  
Qingwen Wu ◽  
...  
Keyword(s):  
Exponential Growth ◽  
Self Assembly ◽  
Fluorescence Spectra ◽  
Multilayer Films ◽  
Emission Characteristic ◽  
Layer By Layer ◽  
Assembly Process ◽  
Characteristic P ◽  
Aggregation Induced Emission

Exponential growth of multilayer films was monitored by fluorescence spectra using aggregation-induced-emission fluorogens, which is in accordance with ellipsometry results.

Aggregation-induced emission from the crowded coronal chains of block copolymer micelles

2020 ◽  
Vol 11 (29) ◽  
pp. 4706-4713 ◽  
Author(s):  
Siyu Wang ◽  
Bixin Jin ◽  
Gangfeng Chen ◽  
Yunjun Luo ◽  
Xiaoyu Li
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
The Self ◽  
Assembly Process ◽  
Spatial Confinement ◽  
Aggregation Induced Emission ◽  
Block Copolymer Micelles ◽  
Copolymer Micelles

Aggregation-induced emission (AIE) was triggered via the spatial confinement in the coronal chains in block copolymers upon micellization, even with very low content of AIE groups attached, and this could be used to monitor the self-assembly process.

Aggregation-induced emission enhancement and aggregation-induced circular dichroism of chiral pentaphenylpyrrole derivatives and their helical self-assembly

2017 ◽  
Vol 41 (17) ◽  
pp. 8877-8884 ◽  
Author(s):  
Longlong Zhang ◽  
Kaichang Liang ◽  
Lichao Dong ◽  
Peipei Yang ◽  
Yuanyuan Li ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Self Assembly ◽  
Induced Circular Dichroism ◽  
Circularly Polarized ◽  
Aggregation Induced Emission ◽  
Self Assembling ◽  
Emission Enhancement ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Circular Dichroïsm

AIEE-active chiral pentaphenylpyrrole derivatives possess AICD and circularly polarized luminescence features with self-assembling to regular nanofibers.

Self-assembly of a white-light emitting polymer with aggregation induced emission enhancement using simplified derivatives of tetraphenylethylene

2016 ◽  
Vol 4 (34) ◽  
pp. 8027-8040 ◽  
Author(s):  
Ezhakudiyan Ravindran ◽  
Elumalai Varathan ◽  
Venkatesan Subramanian ◽  
Narayanasastri Somanathan
Keyword(s):  
White Light ◽  
Self Assembly ◽  
Light Emission ◽  
High Quantum Yield ◽  
Light Emitting ◽  
Aggregation Induced Emission ◽  
Emission Enhancement ◽  
Bright White Light ◽  
J Aggregates ◽  
Derivatives Of

Novel luminogen based copolymers exhibit bright white light emission with high quantum yield through aggregation induced emission enhancement due to J-aggregates.

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