scholarly journals Increasing the horizontal orientation of transition dipole moments in solution processed small molecular emitters

2017 ◽  
Vol 5 (26) ◽  
pp. 6555-6562 ◽  
Author(s):  
Alessia Senes ◽  
Stefan C. J. Meskers ◽  
Horst Greiner ◽  
Katsuaki Suzuki ◽  
Hironori Kaji ◽  
...  
Keyword(s):  
Dipole Moments ◽  
Host Matrix ◽  
Transition Dipole ◽  
Solution Processed ◽  
Horizontal Orientation ◽  
Transition Dipole Moments

The transition dipole moments of the small molecular emitters in a polyfluorene host matrix align strongly in the plane of the film, when deposited from solution and even more when thermally annealed.

scholarly journals Highly effective organic light-emitting diodes containing thermally activated delayed fluorescence emitters with horizontal molecular orientation

RSC Advances ◽  
2020 ◽  
Vol 10 (70) ◽  
pp. 42897-42902
Author(s):  
Chan Hee Lee ◽  
Shin Hyung Choi ◽  
Sung Joon Oh ◽  
Jun Hyeon Lee ◽  
Jae Won Shim ◽  
...  
Keyword(s):  
Dipole Moments ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Host Matrix ◽  
Transition Dipole ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Transition Dipole Moments

The linear D–A–D type of molecular structure of AcPYM and PxPYM enhances the horizontally oriented alignment and up to 87% of the horizontal transition dipole moments in the host matrix is realized.

scholarly journals Transition dipole moment orientation in films of solution processed fluorescent oligomers: investigating the influence of molecular anisotropy

2016 ◽  
Vol 4 (26) ◽  
pp. 6302-6308 ◽  
Author(s):  
Alessia Senes ◽  
Stefan C. J. Meskers ◽  
Wijnand M. Dijkstra ◽  
Jacobus J. van Franeker ◽  
Stéphane Altazin ◽  
...  
Keyword(s):  
Dipole Moment ◽  
Dipole Moments ◽  
Transition Dipole Moment ◽  
Transition Dipole ◽  
Solution Processed ◽  
Transition Dipole Moments ◽  
Molecular Anisotropy

The transition dipole moments of long fluorescent oligomers in a solution processed host align with the plane of the film when aggregated.

scholarly journals Directionality of light absorption and emission in representative fluorescent proteins

2020 ◽  
Vol 117 (51) ◽  
pp. 32395-32401
Author(s):  
Jitka Myšková ◽  
Olga Rybakova ◽  
Jiří Brynda ◽  
Petro Khoroshyy ◽  
Alexey Bondar ◽  
...  
Keyword(s):  
Light Wave ◽  
Fluorescent Proteins ◽  
Dipole Moments ◽  
Biological Processes ◽  
Transition Dipole ◽  
X Ray ◽  
Emission Transition ◽  
Transition Dipole Moments ◽  
Fluorescent Molecules ◽  
Incoming Light

Fluorescent molecules are like antennas: The rate at which they absorb light depends on their orientation with respect to the incoming light wave, and the apparent intensity of their emission depends on their orientation with respect to the observer. However, the directions along which the most important fluorescent molecules in biology, fluorescent proteins (FPs), absorb and emit light are generally not known. Our optical and X-ray investigations of FP crystals have now allowed us to determine the molecular orientations of the excitation and emission transition dipole moments in the FPs mTurquoise2, eGFP, and mCherry, and the photoconvertible FP mEos4b. Our results will allow using FP directionality in studies of molecular and biological processes, but also in development of novel bioengineering and bioelectronics applications.

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