Aggregation-Induced Emission Enhancement from Disilane-Bridged Donor–Acceptor–Donor Luminogens Based on the Triarylamine Functionality

2018 ◽  
Vol 10 (15) ◽  
pp. 12164-12172 ◽  
Author(s):  
Tsukasa Usuki ◽  
Masaki Shimada ◽  
Yoshinori Yamanoi ◽  
Tatsuhiko Ohto ◽  
Hirokazu Tada ◽  
...  
Keyword(s):  
Aggregation Induced Emission ◽  
Emission Enhancement ◽  
Donor Acceptor

Efficient and thermally stable non-doped red OLEDs based on a “bird-like” donor–acceptor fluorophore with aggregation induced emission enhancement and intramolecular charge transfer

2017 ◽  
Vol 5 (30) ◽  
pp. 7436-7440 ◽  
Author(s):  
Ezhakudiyan Ravindran ◽  
Narayanasastri Somanathan
Keyword(s):  
Charge Transfer ◽  
Rational Design ◽  
Intramolecular Charge Transfer ◽  
Thermally Stable ◽  
Aggregation Induced Emission ◽  
Emission Enhancement ◽  
Donor Acceptor ◽  
Red Oleds

The rational design of an efficient and thermally stable non-doped red fluorophore material with tunable AIEE and ICT characteristics triggers enhanced OLED performances.

Cyano-Functionalized Diarylethene Derivatives with Aggregation-Induced Emission Enhancement and Piezofluorochromic Behaviours

2019 ◽  
Vol 72 (5) ◽  
pp. 369 ◽  
Author(s):  
Ying Liu ◽  
Yuqi Cao ◽  
Xue Li ◽  
Yang Li ◽  
Bowei Wang
Keyword(s):  
Photoluminescence Spectrum ◽  
Molecular Conformation ◽  
Alkyl Chain ◽  
Weak Interactions ◽  
Bathochromic Shift ◽  
Phenothiazine Derivatives ◽  
Aggregation Induced Emission ◽  
Emission Enhancement ◽  
Fluorescent Materials ◽  
Donor Acceptor

Four donor–acceptor (D-A) type phenothiazine derivatives were designed and synthesized and all of them exhibited an aggregation-induced emission enhancement (AIEE) effect and red-shifted piezofluorochromic (PFC) behaviour. Moreover, it was found that the compound containing a shorter alkyl chain displayed more remarkable PFC properties. This result was probably ascribed to highly twisted conformations which can lead to loose solid molecular packing with cavities and weak interactions. After they were pressed, the planarization of the molecular conformation increased and molecular conjugation degree enhanced, resulting in a red-shift in the photoluminescence spectrum. In addition, optimized geometric structures indicate that the compound with a longer alkyl chain has a more planer geometric structure, which leads to a smaller bathochromic shift upon grinding. In summary, we provide a new path to regulate the PFC behaviours of fluorescent materials by changing the length of their substituted alkyl chain.

E/Z isomerization, solvatachromism and aggregation-induced emission enhancement of donor–acceptor type oligo(p-phenylene vinylene)s

2017 ◽  
Vol 196 ◽  
pp. 163-176 ◽  
Author(s):  
Cunfang Feng ◽  
Jinyu Li ◽  
Xiao Han ◽  
Xin He ◽  
Liqun Liu ◽  
...  
Keyword(s):  
Theoretical Calculations ◽  
Terminal Group ◽  
Photon Absorption ◽  
Aggregation Induced Emission ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Emission Enhancement ◽  
Donor Acceptor ◽  
Cv Measurements ◽  
Transfer Properties

A donor–acceptor molecule, PICNDSB, with cyclopenta[b]indole as the donor and (1,4-phenylene)bis(3-phenylacrylonitrile) as the acceptor, is designed and synthesized. PICNDSB shows typical aggregation-induced emission characteristics. The photoluminescence quantum yield of PICNDSB in dilute THF was only 0.7% and reaches 51.4% in the solid state. Compared with its analogue CzCNDSB, PICNDSB possesses stronger intramolecular charge transfer properties, as revealed from CV measurements, theoretical calculations, and their fluorescence behaviors. Correspondingly, the relatively more efficient electron-donating terminal group of cyclopenta[b]indole endows the molecule with a much higher two-photon absorption cross section of 1286 GM compared to CzCNDSB (357 GM).

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.

scholarly journals Pyrene-Fused Hexaarylbenzene Luminogens: Synthesis, Characterization, and Aggregation-Induced Emission Enhancement

2021 ◽  
pp. 109452
Author(s):  
Chuan-Zeng Wang ◽  
Ze-Dong Yu ◽  
Wen-Xuan Zhao ◽  
Kai Yang ◽  
Yuki Noda ◽  
...  
Keyword(s):  
Aggregation Induced Emission ◽  
Emission Enhancement

Schiff base modified α-cyanostilbene derivative with aggregation-induced emission enhancement characteristics for Hg2+ detection

2014 ◽  
Vol 202 ◽  
pp. 209-216 ◽  
Author(s):  
Gaobin Zhang ◽  
Aixiang Ding ◽  
Yao Zhang ◽  
Longmei Yang ◽  
Lin Kong ◽  
...  
Keyword(s):  
Schiff Base ◽  
Aggregation Induced Emission ◽  
Emission Enhancement

Electron donating group stimulated aggregation induced emission enhancement of oligophenylenevinylene-cored luminogens

RSC Advances ◽  
2014 ◽  
Vol 4 (107) ◽  
pp. 62684-62688 ◽  
Author(s):  
Priyabrata Roy ◽  
Debabrata Jana ◽  
Ashis Kundu ◽  
Animesh Pramanik
Keyword(s):  
Aggregation Induced Emission ◽  
Emission Enhancement
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