Recent progress in research on stimuli-responsive circularly polarized luminescence based on π-conjugated molecules

2013 ◽  
Vol 85 (10) ◽  
pp. 1967-1978 ◽  
Author(s):  
Hiromitsu Maeda ◽  
Yuya Bando
Keyword(s):  
Recent Progress ◽  
Short Review ◽  
Active Species ◽  
Stimuli Responsive ◽  
Conjugated Molecules ◽  
Circularly Polarized ◽  
Pi Conjugated ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Chirality Induction

This short review article summarizes recent progress in research on various stimuli-responsive circularly polarized luminescence (CPL) properties derived from π-conjugated molecules and related materials. As representative examples, assembled structures of chiral π-conjugated polymers and molecules showed tunable CPL resulting from the enhancement of chirality induction by aggregation. Fascinating CPL-active species, pyrrole-based anion-responsive π-conjugated molecules exhibiting CPL induced by anion binding and ion pairing, are also discussed.

Chemical-Stimuli-Controllable Circularly Polarized Luminescence from Anion-Responsive π-Conjugated Molecules

2011 ◽  
Vol 133 (24) ◽  
pp. 9266-9269 ◽  
Author(s):  
Hiromitsu Maeda ◽  
Yuya Bando ◽  
Konomi Shimomura ◽  
Ippei Yamada ◽  
Masanobu Naito ◽  
...  
Keyword(s):  
Conjugated Molecules ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Chemical Stimuli

Stimuli-responsive circularly polarized luminescent films with tunable emission

2020 ◽  
Vol 8 (4) ◽  
pp. 1459-1465 ◽  
Author(s):  
Huli Yu ◽  
Biao Zhao ◽  
Jinbao Guo ◽  
Kai Pan ◽  
Jianping Deng
Keyword(s):  
Stimuli Responsive ◽  
Circularly Polarized ◽  
Luminescent Films ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Tunable Emission

Circularly polarized luminescence (CPL) of a stimuli-responsive film can be reversibly controlled by manipulating fluorescence and chirality.

Circularly polarized electroluminescence from achiral fluorophore induced by co-assembly containing chiral polymer

2021 ◽  
Author(s):  
Zhongxing Geng ◽  
Yuxia Zhang ◽  
Yu Zhang ◽  
Yang Li ◽  
Yiwu Quan ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Circularly Polarized ◽  
Organic Light ◽  
Induction Mechanism ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Chirality Induction ◽  
Chiral Polymer

Recently, much attention has been paid to circularly polarized luminescence (CPL) organic light-emitting diodes (CP-OLEDs) from achiral fluorophore through intermolecular chirality induction mechanism. In this paper, we developed a new...

scholarly journals Synthesis of Single-Handed Helical Spiro-Conjugated Ladder Polymers through Quantitative and Chemoselective Cyclizations

2021 ◽  
Author(s):  
Wei Zheng ◽  
Tomoyuki Ikai ◽  
Eiji Yashima
Keyword(s):  
Secondary Structures ◽  
Random Coil ◽  
Conjugated Molecules ◽  
Circularly Polarized ◽  
Precursor Polymers ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Ladder Polymers ◽  
Intramolecular Cyclizations ◽  
Circular Dichroïsm

<div>We report the unprecedented synthesis of one-handed helical spiro-conjugated ladder polymers with well-defined primary and secondary structures, in which the spiro-linked</div><div>dibenzo[a,h]anthracene fluorophores are arranged in a one-handed twisting direction, through quantitative and chemoselective acidpromoted intramolecular cyclizations of random-coil precursor polymers composed of chiral 1,1’-spirobiindane and achiral bis[2-(4-alkoxyphenyl)ethynyl]phenylene units. Intense circular dichroism (CD) and circularly polarized luminescence (CPL) were observed, whereas the precursor polymers exhibited negligible CD and CPL activities. The introduction of 2,6-dimethyl substituents on the 4- alkoxyphenylethynyl pendants is of key importance for this simple,</div><div>quantitative, and chemoselective cyclization. This strategy is applicable to the defect-free precise synthesis of other varieties of fully p-conjugated molecules and coplanar ladder polymers that have not been achieved before.</div>

Chiral Supramolecular Polymerization of Dicyanostilbenes with Emergent Circularly Polarized Luminescence Behavior

2021 ◽  
Author(s):  
Yueru Yin ◽  
Ze Chen ◽  
Yi Fei Han ◽  
Rui Liao ◽  
Feng Wang
Keyword(s):  
Conjugated Molecules ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Emission Quenching ◽  
Supramolecular Polymerization ◽  
Luminescence Behavior

Chiral supramolecular polymerization of π-conjugated molecules has become a feasible route toward circularly polarized luminescence (CPL) materials. It remains challenging to solve emission quenching and/or chiral contamination issues upon supramolecular...

Oligoamylose-entwined porphyrin: excited-state induced-fit for chirality induction

2016 ◽  
Vol 52 (12) ◽  
pp. 2481-2484 ◽  
Author(s):  
Mitsuhiko Morisue ◽  
Takashi Yumura ◽  
Risa Sawada ◽  
Masanobu Naito ◽  
Yasuhisa Kuroda ◽  
...  
Keyword(s):  
Excited State ◽  
Ground State ◽  
Induced Fit ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Circular Dichroïsm ◽  
Chirality Induction ◽  
Porphyrin Moiety ◽  
Photoexcited State

An oligoamylose-strapped porphyrin displayed circularly polarized luminescence (CPL) in the S1 state despite being silent in circular dichroism (CD) in the ground state, suggesting chirality induction in the photoexcited porphyrin moiety from the oligoamylose-strap in the photoexcited state.

scholarly journals Synthesis of Single-Handed Helical Spiro-Conjugated Ladder Polymers through Quantitative and Chemoselective Cyclizations

2021 ◽  
Author(s):  
Wei Zheng ◽  
Tomoyuki Ikai ◽  
Eiji Yashima
Keyword(s):  
Secondary Structures ◽  
Random Coil ◽  
Conjugated Molecules ◽  
Circularly Polarized ◽  
Precursor Polymers ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Ladder Polymers ◽  
Intramolecular Cyclizations ◽  
Circular Dichroïsm

<div>We report the unprecedented synthesis of one-handed helical spiro-conjugated ladder polymers with well-defined primary and secondary structures, in which the spiro-linked</div><div>dibenzo[a,h]anthracene fluorophores are arranged in a one-handed twisting direction, through quantitative and chemoselective acidpromoted intramolecular cyclizations of random-coil precursor polymers composed of chiral 1,1’-spirobiindane and achiral bis[2-(4-alkoxyphenyl)ethynyl]phenylene units. Intense circular dichroism (CD) and circularly polarized luminescence (CPL) were observed, whereas the precursor polymers exhibited negligible CD and CPL activities. The introduction of 2,6-dimethyl substituents on the 4- alkoxyphenylethynyl pendants is of key importance for this simple,</div><div>quantitative, and chemoselective cyclization. This strategy is applicable to the defect-free precise synthesis of other varieties of fully p-conjugated molecules and coplanar ladder polymers that have not been achieved before.</div>

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