Crystal Polymorphism-dependent Fluorescence of Fluoroarene-substituted Anthracene Derivatives

2021 ◽  
Vol 50 (1) ◽  
pp. 31-34
Author(s):  
Takahiro Kusukawa ◽  
Fumihiro Kannen ◽  
Yusuke Kojima ◽  
Kenji Yoza
Keyword(s):  
Crystal Polymorphism ◽  
Anthracene Derivatives

Double Ring-Closing Approach for the Synthesis of 2,3,6,7-Substituted Anthracene Derivatives

2020 ◽  
Author(s):  
Birgit Meindl ◽  
Katharina Pfennigbauer ◽  
Berthold Stöger ◽  
Martin Heeney ◽  
Florian Glöcklhofer
Keyword(s):  
Wittig Reaction ◽  
Condensation Reaction ◽  
Synthetic Methods ◽  
Anthracene Derivative ◽  
Double Ring ◽  
Mild Conditions ◽  
Wide Range ◽  
Anthracene Derivatives

Anthracene derivatives have been used for a wide range of applications and many different synthetic methods for their preparation have been developed. However, despite continued synthetic efforts, introducing substituents in some positions has remained difficult. Here we present a method for the synthesis of 2,3,6,7-substituted anthracene derivatives, one of the most challenging anthracene substitution patterns to obtain. The method is exemplified by the preparation of 2,3,6,7-anthracenetetracarbonitrile and employs a newly developed, stable protected 1,2,4,5-benzenetetracarbaldehyde as the precursor. The precursor can be obtained in two scalable synthetic steps from 2,5-dibromoterephthalaldehyde and is converted into the anthracene derivative by a double intermolecular Wittig reaction under very mild conditions followed by a deprotection and intramolecular double ring-closing condensation reaction. Further modification of the precursor is expected to enable the introduction of additional substituents in other positions and may even enable the synthesis of fully substituted anthracene derivatives by the presented approach.<br>

Formation of CT complexes and electron transfer from excited molecules of anthracene derivatives to methylviologen in aqueous and micellar media

1987 ◽  
Vol 52 (7) ◽  
pp. 1658-1665
Author(s):  
Viktor Řehák ◽  
Jana Boledovičová
Keyword(s):  
Electron Transfer ◽  
Complex Formation ◽  
Fluorescence Quenching ◽  
Rate Constant ◽  
Formation Constants ◽  
Dynamic Quenching ◽  
Micellar Media ◽  
Complex Formation Constants ◽  
Anthracene Derivatives ◽  
Ct Complexes

Disodium 1,5- and 1,8-anthracenedisulphonate (ADS) and 9-acetylanthracene form coloured CT complexes with methylviologen (MV2+) in aqueous and micellar media. The complex formation constants and molar absorptivities were determined by the Benesi-Hildebrandt method. In the fluorescence quenching, its static component plays the major role. The dynamic quenching component is determined by the rate constant of electron transfer from the S1 state of ADS to MV2+.

Azobenzene Crystal Polymorphism Enables Tuneable Photoinduced Deformation, Mechanical Behaviors and Photoluminescent Properties

2021 ◽  
Author(s):  
Yunhui Hao ◽  
Lei Gao ◽  
Xiunan Zhang ◽  
Rongli Wei ◽  
Ting Wang ◽  
...  
Keyword(s):  
Smart Materials ◽  
Molecular Crystals ◽  
Stimuli Responsive ◽  
Mechanical Behaviors ◽  
Crystal Polymorphism

Stimuli-responsive molecular crystals are fascinating for their potential as adaptive smart materials. However, achieving one crystal that could respond to multiple stimuli and perform multiple functionalities simultaneously is still challenging....

Line broadening in electronic spectra of anthracene derivatives inside superfluid helium nanodroplets

2010 ◽  
Vol 133 (11) ◽  
pp. 114505 ◽  
Author(s):  
D. Pentlehner ◽  
Ch. Greil ◽  
B. Dick ◽  
A. Slenczka
Keyword(s):  
Superfluid Helium ◽  
Electronic Spectra ◽  
Line Broadening ◽  
Helium Nanodroplets ◽  
Anthracene Derivatives

Ring Construction by 1,1‐Carboboration; Making Anthracene Derivatives from a Tetra(alkynyl)benzene

2021 ◽  
Author(s):  
Gerhard Erker ◽  
René Liedtke ◽  
Sabrina Surmiak ◽  
Xiaoming Jie ◽  
Constantin G. Daniliuc ◽  
...  
Keyword(s):  
Anthracene Derivatives

Influence of chain structure on crystal polymorphism of poly(lactic acid). Part 2. Effect of molecular mass on the crystal growth rate and semicrystalline morphology

2015 ◽  
Vol 293 (9) ◽  
pp. 2459-2467 ◽  
Author(s):  
Maria Laura Di Lorenzo ◽  
Paolo Rubino ◽  
Barbara Immirzi ◽  
Romain Luijkx ◽  
Marion Hélou ◽  
...  
Keyword(s):  
Growth Rate ◽  
Lactic Acid ◽  
Crystal Growth ◽  
Molecular Mass ◽  
Chain Structure ◽  
Crystal Growth Rate ◽  
Poly Lactic Acid ◽  
Crystal Polymorphism

ChemInform Abstract: BF3-H2O Catalyzed Hydroxyalkylation of Aromatics with Aromatic Aldehydes and Dicarboxaldehydes: Efficient Synthesis of Triarylmethanes, Diarylmethylbenzaldehydes, and Anthracene Derivatives.

ChemInform ◽  
2010 ◽  
Vol 41 (13) ◽  
Author(s):  
G. K. Surya Prakash ◽  
Chiradeep Panja ◽  
Anton Shakhmin ◽  
Eric Shah ◽  
Thomas Mathew ◽  
...  
Keyword(s):  
Aromatic Aldehydes ◽  
Efficient Synthesis ◽  
Anthracene Derivatives

Synthesis and Two-Photon Absorption Properties of 9,10-Bis(arylethynyl)anthracene Derivatives

2004 ◽  
Vol 16 (14) ◽  
pp. 2783-2789 ◽  
Author(s):  
Wen Jun Yang ◽  
Chang Ho Kim ◽  
Mi-Yun Jeong ◽  
Seung Kyu Lee ◽  
Ming Jun Piao ◽  
...  
Keyword(s):  
Photon Absorption ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Anthracene Derivatives
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