4-Arylethynyl-5-fluorobenzoyl-1-methylimidazole exhibiting self-recovering mechanofluorochromism and forming fluorescence molecular glass

2021 ◽  
Author(s):  
Youhei Miura ◽  
Kazuki Murai ◽  
Kazufumi Yamada ◽  
Naoki Yoshioka
Keyword(s):  
Molecular Glass

Study of the ?-Mechanical Relaxation in Molecular Glass-Forming Liquids

1997 ◽  
Vol 7 (11) ◽  
pp. 1635-1650 ◽  
Author(s):  
A. Faivre ◽  
L. David ◽  
J. Perez
Keyword(s):  
Mechanical Relaxation ◽  
Glass Forming ◽  
Molecular Glass

Fluorescent Molecular Glass Based on Hexadehydrotribenzo[12]annulene

2021 ◽  
Author(s):  
Yotaro Kasahara ◽  
Ichiro Hisaki ◽  
Tomoyuki Akutagawa ◽  
Takashi Takeda
Keyword(s):  
Glass Material ◽  
Molecular Glass

We prepared octylbenzoate-substituted [12]DBA (C8[12]DBA) as an organic molecular glass material. Even with a central large, planar π unit of [12]DBA, which is generally advantageous for the formation of a...

Janus and Strawberry-like Particles from Azo Molecular Glass and Polydimethylsiloxane Oligomer

Langmuir ◽  
2017 ◽  
Vol 33 (40) ◽  
pp. 10645-10654 ◽  
Author(s):  
Chungen Hsu ◽  
Yi Du ◽  
Xiaogong Wang
Keyword(s):  
Molecular Glass

Highly efficient and stable deep-blue emitting anthracene-derived molecular glass for versatile types of non-doped OLED applications

2012 ◽  
Vol 22 (1) ◽  
pp. 123-129 ◽  
Author(s):  
Illhun Cho ◽  
Se Hun Kim ◽  
Jong H. Kim ◽  
Sanghyuk Park ◽  
Soo Young Park
Keyword(s):  
Highly Efficient ◽  
Deep Blue ◽  
Molecular Glass

scholarly journals Inter-enantiomer conversion dynamics and Johari–Goldstein relaxation of benzophenones

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Michela Romanini ◽  
Roberto Macovez ◽  
Maria Barrio ◽  
Josep Lluís Tamarit
Keyword(s):  
Glass Transition ◽  
Dielectric Loss ◽  
Dielectric Spectroscopy ◽  
Parent Compound ◽  
Scanning Calorimetry ◽  
Molecular Conformations ◽  
Molecular Glass ◽  
Phenyl Ketone ◽  
Temperature And Pressure ◽  
Opposite Chirality

AbstractWe employ temperature- and pressure-dependent dielectric spectroscopy, as well as differential scanning calorimetry, to characterize benzophenone and the singly-substituted ortho-bromobenzophenone derivative in the liquid and glass states, and analyze the results in terms of the molecular conformations reported for these molecules. Despite the significantly higher mass of the brominated derivative, its dynamic and calorimetric glass transition temperatures are only ten degrees higher than those of benzophenone. The kinetic fragility index of the halogenated molecule is lower than that of the parent compound, and is found to decrease with increasing pressure. By a detailed analysis of the dielectric loss spectra, we provide evidence for the existence of a Johari–Goldstein (JG) relaxation in both compounds, thus settling the controversy concerning the possible lack of a JG process in benzophenone and confirming the universality of this dielectric loss feature in molecular glass-formers. Both compounds also display an intramolecular relaxation, whose characteristic timescale appears to be correlated with that of the cooperative structural relaxation associated with the glass transition. The limited molecular flexibility of ortho-bromobenzophenone allows identifying the intramolecular relaxation as the inter-enantiomeric conversion between two isoenergetic conformers of opposite chirality, which only differ in the sign of the angle between the brominated aryl ring and the coplanar phenyl-ketone subunit. The observation by dielectric spectroscopy of a similar relaxation also in liquid benzophenone indicates that the inter-enantiomer conversion between the two isoenergetic helicoidal ground-state conformers of opposite chirality occurs via a transition state characterized by a coplanar phenyl-ketone moiety.

Simultaneous enhancement of the carrier mobility and luminous efficiency through thermal annealing a molecular glass material and device

2012 ◽  
Vol 22 (40) ◽  
pp. 21502 ◽  
Author(s):  
Shanfeng Xue ◽  
Liang Yao ◽  
Suijun Liu ◽  
Cheng Gu ◽  
Fangzhong Shen ◽  
...  
Keyword(s):  
Thermal Annealing ◽  
Carrier Mobility ◽  
Luminous Efficiency ◽  
Glass Material ◽  
Molecular Glass

Novel one-component molecular glass photoresist based on cyclotriphosphazene containing t-butyloxy carbonyl group for i-line lithography

2017 ◽  
Vol 24 (4) ◽  
Author(s):  
Hu Li ◽  
Zhen Zhou ◽  
Jingcheng Liu ◽  
Xiangfei Zheng ◽  
Wenjia Xu ◽  
...  
Keyword(s):  
Carbonyl Group ◽  
Molecular Glass

Molecular glass resist performance for nano-pattern transfer

2015 ◽  
Author(s):  
Ziad el Otell ◽  
Andreas Ringk ◽  
Tristan Kolb ◽  
Christian Neuber ◽  
Leander Hansel ◽  
...  
Keyword(s):  
Pattern Transfer ◽  
Molecular Glass

scholarly journals Super-Arrhenius behavior of molecular glass formers

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
Ankit Singh ◽  
Yashwant Singh
Keyword(s):  
Arrhenius Behavior ◽  
Molecular Glass
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