Direct Voltammetric Observation of Reversible and Irreversible Oxidations of Two-Dimensional J-Aggregates of Cyanine Dye

2001 ◽  
Vol 105 (4) ◽  
pp. 796-803 ◽  
Author(s):  
Mitsuo Kawasaki ◽  
Tomoo Sato
Keyword(s):  
Cyanine Dye ◽  
Two Dimensional ◽  
J Aggregates

Crystalline structure of two-dimensional cyanine dye J-aggregates

2014 ◽  
Vol 59 (6) ◽  
pp. 896-899 ◽  
Author(s):  
V. V. Prokhorov ◽  
O. M. Perelygina ◽  
E. I. Mal’tsev ◽  
A. V. Vannikov
Keyword(s):  
Crystalline Structure ◽  
Cyanine Dye ◽  
Two Dimensional ◽  
J Aggregates

Polymorphism of Two-Dimensional Cyanine Dye J-Aggregates and Its Genesis: Fluorescence Microscopy and Atomic Force Microscopy Study

2015 ◽  
Vol 119 (48) ◽  
pp. 15046-15053 ◽  
Author(s):  
Valery V. Prokhorov ◽  
Olga M. Perelygina ◽  
Sergey I. Pozin ◽  
Eugene I. Mal’tsev ◽  
Anatoly V. Vannikov
Keyword(s):  
Atomic Force Microscopy ◽  
Fluorescence Microscopy ◽  
Microscopy Study ◽  
Cyanine Dye ◽  
Two Dimensional ◽  
Atomic Force Microscopy Study ◽  
Force Microscopy ◽  
Atomic Force ◽  
J Aggregates

scholarly journals Exploiting cyanine dye J-aggregates/monomer equilibrium in hydrophobic protein pockets for efficient multi-step phototherapy: An innovative concept for smart nanotheranostics

Nanoscale ◽  
2021 ◽  
Author(s):  
Matias Luis Picchio ◽  
Julian Bergueiro Álvarez ◽  
Stefanie Wedepohl ◽  
Roque J Minari ◽  
Cecilia Ines Alvarez Igarzabal ◽  
...  
Keyword(s):  
Indocyanine Green ◽  
Contrast Agent ◽  
Photothermal Therapy ◽  
Near Infrared ◽  
Cyanine Dye ◽  
Hydrophobic Protein ◽  
Nir Dyes ◽  
Protein Pockets ◽  
J Aggregates ◽  
Innovative Concept

After several decades of development in the field of near-infrared (NIR) dyes for photothermal therapy (PTT), indocyanine green (ICG) still remains the only FDA-approved NIR contrast agent. However, upon NIR...

scholarly journals How two-dimensional brick layer J-aggregates differ from linear ones: Excitonic properties and line broadening mechanisms

2016 ◽  
Vol 144 (13) ◽  
pp. 134310 ◽  
Author(s):  
Arend G. Dijkstra ◽  
Hong-Guang Duan ◽  
Jasper Knoester ◽  
Keith A. Nelson ◽  
Jianshu Cao
Keyword(s):  
Two Dimensional ◽  
Line Broadening ◽  
J Aggregates ◽  
Excitonic Properties

Mesoscopic Organization of Two-Dimensional J-Aggregates of Thiacyanine in Langmuir−Schaefer Films

Langmuir ◽  
2004 ◽  
Vol 20 (26) ◽  
pp. 11569-11576 ◽  
Author(s):  
Chun-Hong Tian ◽  
Dao-Jun Liu ◽  
Roel Gronheid ◽  
Mark Van der Auweraer ◽  
Frans C. De Schryver
Keyword(s):  
Two Dimensional ◽  
J Aggregates

scholarly journals Localization and coherent dynamics of excitons in the two-dimensional optical spectrum of molecular J-aggregates

2008 ◽  
Vol 128 (16) ◽  
pp. 164511 ◽  
Author(s):  
Arend G. Dijkstra ◽  
Thomas la Cour Jansen ◽  
Jasper Knoester
Keyword(s):  
Optical Spectrum ◽  
Two Dimensional ◽  
Coherent Dynamics ◽  
J Aggregates

Molecular Arrangement in Cyanine Dye J-Aggregates Formed on CeO2 Nanoparticles

2018 ◽  
Vol 122 (36) ◽  
pp. 20996-21003 ◽  
Author(s):  
Svetlana L. Yefimova ◽  
Ganna V. Grygorova ◽  
Vladimir K. Klochkov ◽  
Igor A. Borovoy ◽  
Alexander V. Sorokin ◽  
...  
Keyword(s):  
Ceo2 Nanoparticles ◽  
Cyanine Dye ◽  
Molecular Arrangement ◽  
J Aggregates

Controlled Layering of Two-Dimensional J-Aggregate of Anionic Cyanine Dye on Self-Assembled Cysteamine Monolayer on Au(111)

Langmuir ◽  
2000 ◽  
Vol 16 (12) ◽  
pp. 5409-5417 ◽  
Author(s):  
Mitsuo Kawasaki ◽  
Tomoo Sato ◽  
Takayo Yoshimoto
Keyword(s):  
Cyanine Dye ◽  
Two Dimensional ◽  
Self Assembled

scholarly journals J-aggregates of amphiphilic cyanine dyes: Self-organization of artificial light harvesting complexes

2006 ◽  
Vol 2006 ◽  
pp. 1-21 ◽  
Author(s):  
Stefan Kirstein ◽  
Siegfried Daehne
Keyword(s):  
Structural Model ◽  
Light Harvesting ◽  
Optical Spectra ◽  
Cyanine Dye ◽  
Structural Motif ◽  
Self Organization ◽  
Artificial Light ◽  
Light Harvesting Complexes ◽  
Unequal Distribution ◽  
J Aggregates

The simultaneous chemical linkage of cyanine dye chromophores with both hydrophobic and hydrophilic substituents leads to a new type of amphiphilic molecules with the ability of spontaneous self-organization into highly ordered aggregates of various structures and morphologies. These aggregates carry the outstanding optical properties of J-aggregates, namely, efficient exciton coupling and fast exciton energy migration, which are essential for the build up of artificial light harvesting systems. The morphology of the aggregates depends sensitively on the molecular structure of the chemical substituents of the dye chromophore. Accordingly, lamellar ribbon-like structures, vesicles , tubes, and bundles of tubes are found depending on the dyes and the structure can further be altered by addition of surfactants, alcohols, or other additives. Altogether the tubular structure is the most noticeable structural motif of these types of J-aggregates. The optical spectra are characterized in general by a complex exciton spectrum which is composed of several electronic transitions. The spectrum is red-shifted as a total with respect to the monomer absorption and exhibits resonance fluorescence from the lowest energy transition. For the tubular structures, the optical spectra can be related to a structural model. Although the molecules itself are strictly achiral, a pronounced circular dichroism (CD) is observed for the tubular aggregates and explained by unequal distribution of left- and right-handed helicity of the tubes. Photo-induced electron transfer (PET) reactions from the dye aggregates to electron acceptor molecules lead to superquenching which proves the delocalization of the excitation. This property is used to synthesize metal nanoparticles on the aggregate surface by photo-induced reduction of metal ions.

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