Effects of substituents in the polymethine chain on the photoprocesses in indodicarbocyanine dyes

1996 ◽  
Vol 92 (24) ◽  
pp. 4917-4925 ◽  
Author(s):  
Alexander K. Chibisov ◽  
Galina V. Zakharova ◽  
Helmut Görner
Keyword(s):  
Polymethine Chain ◽  
Indodicarbocyanine Dyes

scholarly journals The photoprocess effects of an amino group located at different positions along the polymethine chain in indodicarbocyanine dyes

RSC Advances ◽  
2017 ◽  
Vol 7 (49) ◽  
pp. 30740-30746 ◽  
Author(s):  
Jianfang Cao ◽  
Jiangli Fan ◽  
Wen Sun ◽  
Yu Guo ◽  
Hongmei Wu ◽  
...  
Keyword(s):  
Polymethine Chain ◽  
Amino Group ◽  
Indodicarbocyanine Dyes

The amino group is a-ICT in the even position but is the ICT in the odd position.

scholarly journals Электронное строение и спектрально-флуоресцентные свойства лазерных красителей тиопирило-4-трикарбоцианинов

2021 ◽  
Vol 129 (7) ◽  
pp. 862
Author(s):  
А.А. Ищенко ◽  
И.В. Курдюкова ◽  
М.В. Богданович ◽  
С.Л. Бондарев ◽  
А.А. Романенко ◽  
...  
Keyword(s):  
Radiative Transition ◽  
Polymethine Chain ◽  
Long Wavelength ◽  
Vibronic Interactions ◽  
Wide Range ◽  
Wavelength Absorption ◽  
Fluorescent State ◽  
Long Wavelength Absorption Band ◽  
Angle Of Rotation ◽  
Ab Initio Dft

It was found that the long-wavelength absorption band of the laser dye IR 1061 and its analogue with an unsubstituted polymethine chain is strongly broadened and decreases in intensity in polar solvents, while the fluorescence band remains narrow and practically does not change in a wide range of solvent polarities. Based on the quantum-chemical calculations of these dyes by the ab initio DFT/B3LYP/6-31G (d,p) and TDDFT methods, taking into account the polarity of the medium by the PCM method, it is shown that the reason for this difference is the weakening of solvation in the fluorescent state as compared to the ground state due to the greater equalization of the charge in the first than in the latter. An increase in the alternation of bond orders in the polymethine chain in the fluorescent state was found, which causes an increase of vibronic interactions in the radiative transition as compared to the absorptive one. Spectral effects caused by a change in the angle of rotation of phenyl groups in the thiopyrylium cycle upon excitation have been analyzed.

ChemInform Abstract: CYANINE DYES, BENZIMIDAZOLE DERIVATIVES WITH CYANO GROUPS IN THE POLYMETHINE CHAIN

1983 ◽  
Vol 14 (31) ◽  
Author(s):  
A. YA. IL'CHENKO ◽  
A. A. GERASIMENKO ◽  
V. N. RUDENKO ◽  
V. I. BAEVSKAYA
Keyword(s):  
Cyanine Dyes ◽  
Benzimidazole Derivatives ◽  
Polymethine Chain ◽  
Cyano Groups

ChemInform Abstract: Novel Asymmetric Indodicarbocyanine Dyes.

ChemInform ◽  
2008 ◽  
Vol 39 (38) ◽  
Author(s):  
V. E. Kuznetsova ◽  
A. V. Davydov ◽  
V. A. Vasiliskov ◽  
A. A. Stomakhin ◽  
A. V. Chudinov ◽  
...  
Keyword(s):  
Indodicarbocyanine Dyes

The development of a light-up red-emitting fluorescent probe based on a G-quadruplex specific cyanine dye

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70117-70123 ◽  
Author(s):  
Xing Chen ◽  
Jine Wang ◽  
Guimei Jiang ◽  
Guangyue Zu ◽  
Min Liu ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Cyanine Dye ◽  
Polymethine Chain ◽  
G Quadruplex

Cyanine dye-dimethylindole red containing an anionic propylsulfonate substituent and an extending polymethine chain was found to behave as a highly specific red-emitting G-quadruplex probe, especially for parallel G-quadruplex c-myc.

N-Bromosuccinimide-mediated dimerization of unsymmetrical indodicarbocyanine dyes

2019 ◽  
Vol 60 (35) ◽  
pp. 151005
Author(s):  
Sergey Miltsov ◽  
Mikhail Goikhman ◽  
Alexander Yakimansky ◽  
Alexander Misharev ◽  
Mar Puyol ◽  
...  
Keyword(s):  
Indodicarbocyanine Dyes

ChemInform Abstract: THIADICARBOCYANINES WITH A β,Δ-NEOPENTYLENE BRIDGE IN THE POLYMETHINE CHAIN

1979 ◽  
Vol 10 (33) ◽  
Author(s):  
YU. L. SLOMINSKII ◽  
N. N. ROMANOV ◽  
Z. N. STETSENKO ◽  
A. I. TOLMACHEV
Keyword(s):  
Polymethine Chain
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