scholarly journals Synergy of Electrostatic and π–π Interactions in the Realization of Nanoscale Artificial Photosynthetic Model Systems

2020 ◽  
Vol 59 (42) ◽  
pp. 18786-18794 ◽  
Author(s):  
Eduardo Anaya‐Plaza ◽  
Jan Joseph ◽  
Stefan Bauroth ◽  
Maximilian Wagner ◽  
Christian Dolle ◽  
...  
Keyword(s):  
Model Systems ◽  
Π Interactions ◽  
Artificial Photosynthetic

scholarly journals Quantification of CH-π Interactions Using Calix[4]pyrrole Receptors as Model Systems

Molecules ◽  
2015 ◽  
Vol 20 (9) ◽  
pp. 16672-16686 ◽  
Author(s):  
Gemma Aragay ◽  
Daniel Hernández ◽  
Begoña Verdejo ◽  
Eduardo Escudero-Adán ◽  
Marta Martínez ◽  
...  
Keyword(s):  
Model Systems ◽  
Π Interactions

Synthesis and Emission Properties of meso-Substituted Porphyrins

2014 ◽  
Vol 71 (1) ◽  
Author(s):  
Tan Ke Xin ◽  
Hendrik O. Lintang ◽  
Abdul Rahman Tamuri ◽  
Salasiah Endud ◽  
Mohd Bakri Bakar
Keyword(s):  
Electron Transfer ◽  
Organic Dyes ◽  
Red Light ◽  
Emission Spectra ◽  
Model Systems ◽  
Fluorescent Properties ◽  
Light Emitting ◽  
Absorption Energy ◽  
Energy And Electron Transfer ◽  
Artificial Photosynthetic

Discovering of various organic dyes including porphyrins have attracted considerable attention to mimic the energy and electron transfer process for the artificial photosynthetic model systems which can be applied in developing optoelectronic devices. The accessibility on tailoring porphyrin properties makes them a good candidate to, be developed as the red light emitting materials for these applications. Thus, symmetrical and unsymmetrical molecular models of porphyrins with appended fluorenyl components and extended π electrons conjugated system were synthesized towards increasing the efficiency of energy and electron transfer. In the photophysical studies, the emission spectra proposed the evidence of energy transfer of appended fluorenyl arms into the porphyrin macrocyclic whereas the extension of conjugating system in porphyrins exhibits lower absorption energy and intensified the red fluorescent properties.

scholarly journals Tubular J-aggregates of cyanine dyes in the near-infrared

2021 ◽  
Author(s):  
Austin Bailey ◽  
Arundhati Deshmukh ◽  
Timothy Atallah ◽  
Ulugbek Barotov ◽  
Monica Pengshung ◽  
...  
Keyword(s):  
Self Assembly ◽  
Near Infrared ◽  
Chemical Space ◽  
Photophysical Properties ◽  
Model Systems ◽  
Cyanine Dye ◽  
Infrared Emitters ◽  
Photosynthetic Complexes ◽  
Infrared Wavelengths ◽  
Artificial Photosynthetic

Developing improved organic infrared emitters has wide-ranging applicability in fields such as bioimaging or energy harvesting. We synthesize redshifted analogues of C8S3, a well-known cyanine dye that self assembles into tubular aggregates which have attracted widespread attention as artificial photosynthetic complexes. Despite the elongated dye structure, the new pentamethine dyes retain their tubular self-assembly and emit at near-infrared wavelengths. Cryo-electron microscopy and detailed photophysical characterization of the new aggregates reveal similar absorption lineshapes with ~100 nm of redshift, as well as supramolecular morphologies that resemble their trimethine counterparts; the pentamethine aggregates generally show more disorder and decreased superradiance, suggesting that more ordered structures yield more robust photophysical properties. These results provide design principles of superradiant organic emitters, expand the chemical space of near-infrared aggregates, and introduce two additional wavelength-specific antennae as model systems for study.

Gated Dissipative Dynamic Artificial Photosynthetic Model Systems

2021 ◽  
Author(s):  
Chen Wang ◽  
Zhixin Zhou ◽  
Yu Ouyang ◽  
Jianbang Wang ◽  
Ehud Neumann ◽  
...  
Keyword(s):  
Model Systems ◽  
Artificial Photosynthetic ◽  
Dissipative Dynamic
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