Pyrrolopyrrole Cyanine Dyes: A New Class of Near-Infrared Dyes and Fluorophores

2009 ◽  
Vol 15 (19) ◽  
pp. 4857-4864 ◽  
Author(s):  
Georg M. Fischer ◽  
Magnus Isomäki-Krondahl ◽  
Inigo Göttker-Schnetmann ◽  
Ewald Daltrozzo ◽  
Andreas Zumbusch
Keyword(s):  
Near Infrared ◽  
Cyanine Dyes ◽  
New Class

scholarly journals Corrigendum: Pyrrolopyrrole Cyanine Dyes: A New Class of Near-Infrared Dyes and Fluorophores

2012 ◽  
Vol 18 (24) ◽  
pp. 7326-7326 ◽  
Author(s):  
Georg M. Fischer ◽  
Magnus Isomäki-Krondahl ◽  
Inigo Göttker-Schnetmann ◽  
Ewald Daltrozzo ◽  
Andreas Zumbusch
Keyword(s):  
Near Infrared ◽  
Cyanine Dyes ◽  
New Class

A New Method for the Synthesis of Heptamethine Cyanine Dyes:  Synthesis of New Near Infrared Fluorescent Labels

1997 ◽  
Vol 62 (26) ◽  
pp. 9387-9387 ◽  
Author(s):  
Narasimhachari Narayanan ◽  
Lucjan Strekowski ◽  
Malgorzata Lipowska ◽  
Gabor Patonay
Keyword(s):  
Near Infrared ◽  
Cyanine Dyes ◽  
New Method ◽  
Fluorescent Labels

scholarly journals Электронная структура и спектры оптического поглощения золотых фуллеренов Au-=SUB=-16-=/SUB=- и Au-=SUB=-20-=/SUB=-

2019 ◽  
Vol 61 (6) ◽  
pp. 1204
Author(s):  
Г.И. Миронов
Keyword(s):  
Optical Properties ◽  
Energy Spectrum ◽  
Optical Absorption ◽  
Near Infrared ◽  
Fourier Transforms ◽  
Green Functions ◽  
Optical Absorption Spectra ◽  
New Class ◽  
Infrared Spectral ◽  
Neighboring Site

AbstractThe electronic and optical properties of gold fullerenes are studied in the framework of the Hubbard model. The expressions of the Fourier transforms of anticommutator Green functions have been obtained for gold fullerenes Au_16 and Au_20, the poles of which determine the energy spectrum of the system under consideration. The calculations are performed for the thermodynamic means that characterize jumps of electrons from a nanosystem site to a neighboring site, the correlation functions demonstrating the possibility of existing two d electrons with oppositely oriented spin projections on the same site of the fullerenes consisting of gold atoms. The optical absorption spectra are presented. The optical absorption peaks of ions $${\text{Au}}_{{20}}^{ - }$$ and $${\text{Au}}_{{16}}^{ - }$$ correspond to a near-infrared spectral region, where the light absorption by blood or a soft tissue is vanishingly small; thus, these ions can be used as a new class of contrast improvements and phototherapeutic means for diagnostics and treatment of cancer.

The Efficacy of Hybridization Analysis of DNA Labeled with Red and Near-Infrared Cyanine Dyes

BIOPHYSICS ◽  
2021 ◽  
Vol 66 (1) ◽  
pp. 25-31
Author(s):  
A. Yu. Ikonnikova ◽  
V. E. Shershov ◽  
Yu. V. Moroz ◽  
V. A. Vasiliskov ◽  
S. A. Lapa ◽  
...  
Keyword(s):  
Near Infrared ◽  
Cyanine Dyes ◽  
Hybridization Analysis

scholarly journals Red and Near-Infrared Absorbing Dicyanomethylene Squaraine Cyanine Dyes: Photophysicochemical Properties and Anti-Tumor Photosensitizing Effects

Materials ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2083
Author(s):  
Tiago D. Martins ◽  
Eurico Lima ◽  
Renato E. Boto ◽  
Diana Ferreira ◽  
José R. Fernandes ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Near Infrared ◽  
Cyanine Dyes ◽  
Quantum Yields ◽  
Squaraine Dyes ◽  
Photodynamic Activity ◽  
Photochemical Properties ◽  
Radiation Treatments ◽  
Species Production

Photodynamic therapy is a medical modality developed for the treatment of several diseases of oncological and non-oncological etiology that requires the presence of a photosensitizer, light and molecular oxygen, which combined will trigger physicochemical reactions responsible for reactive oxygen species production. Given the scarcity of photosensitizers that exhibit desirable characteristics for its potential application in this therapeutic strategy, the main aims of this work were the study of the photophysical and photochemical properties and the photobiological activity of several dicyanomethylene squaraine cyanine dyes. Thus, herein, the study of their aggregation character, photobleaching and singlet oxygen production ability, and the further application of the previously synthesized dyes in Caco-2 and HepG2 cancer cell lines, to evaluate their phototherapeutic effects, are described. Dicyanomethylene squaraine dyes exhibited moderate light-stability and, despite the low singlet oxygen quantum yields, were a core of dyes that exhibited relevant in vitro photodynamic activity, as there was an evident increase in the toxicity of some of the tested dyes exclusive to radiation treatments.

aza-BODIPY synthesis towards vis/NIR functional chromophores based on a Schiff base forming reaction protocol using lactams and heteroaromatic amines

2019 ◽  
Vol 55 (60) ◽  
pp. 8722-8743 ◽  
Author(s):  
Soji Shimizu
Keyword(s):  
Schiff Base ◽  
Near Infrared ◽  
New Class

The Schiff base forming reaction of lactams and heteroaromatic amines led to creation of a new class of aza-BODIPY analogues as visible and near infrared functional chromophores.

Design and Synthesis of Near-infrared-active Heptamethine–Cyanine Dyes to Suppress Aggregation in a Dye-sensitized Porous Zinc Oxide Solar Cell

2008 ◽  
Vol 37 (2) ◽  
pp. 176-177 ◽  
Author(s):  
Atsuhiro Otsuka ◽  
Kazumasa Funabiki ◽  
Naoyuki Sugiyama ◽  
Hiroyoshi Mase ◽  
Tsukasa Yoshida ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Solar Cell ◽  
Near Infrared ◽  
Cyanine Dyes ◽  
Design And Synthesis ◽  
Dye Sensitized

Near-infrared bis(indolium heptamethine cyanine) dyes with a spacer derived from oligo(ethylene glycol)

2009 ◽  
Vol 46 (5) ◽  
pp. 925-930 ◽  
Author(s):  
Ewa Wolinska ◽  
Maged Henary ◽  
Ekaterina Paliakov ◽  
Lucjan Strekowski
Keyword(s):  
Ethylene Glycol ◽  
Near Infrared ◽  
Cyanine Dyes

scholarly journals Upper Limits for the Luminosity of a dM Companion in AM Herculis Objects

1980 ◽  
Vol 88 ◽  
pp. 471-472
Author(s):  
S. Tapia ◽  
G. V. Coyne
Keyword(s):  
Binary Systems ◽  
Near Infrared ◽  
Close Binary ◽  
Optical Identification ◽  
New Class ◽  
Upper Limits ◽  
Infrared Spectral ◽  
Cyclotron Emission ◽  
High Degree ◽  
The Magnetic Field

SummaryThe quest for optical identification of X-ray sources has revealed a new class of variables currently formed by AM Her, AN UMa, VV Pup, and the most recent member, 2A 0311-227 (for which a variable star designation will be available soon). These objects show many of the variations common to close binary systems where mass transfer is under way. However, they are distinguished by the high degree (10 to 35 %) of linear and circular polarization observed in the optical and near infrared spectral regions. Apparently the polarization is due to cyclotron emission of electrons located in a region where the magnetic field strength is about 108 gauss.

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