Steady-State and Picosecond Laser Fluorescence Studies of Nonradiative Pathways in Tricarbocyanine Dyes: Implications to the Design of Near-IR Fluorochromes with High Fluorescence Efficiencies

1994 ◽  
Vol 116 (9) ◽  
pp. 3744-3752 ◽  
Author(s):  
Steven A. Soper ◽  
Quincy L. Mattingly
Keyword(s):  
Steady State ◽  
Picosecond Laser ◽  
Laser Fluorescence ◽  
Fluorescence Studies ◽  
Near Ir ◽  
High Fluorescence

Singlet oxygen generation of subphthalocyanine-fused dimer and trimer

2020 ◽  
Vol 24 (01n03) ◽  
pp. 211-219
Author(s):  
Rei Fujishiro ◽  
Hayato Sonoyama ◽  
Yuki Ide ◽  
Takuya Fujimura ◽  
Ryo Sasai ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Quantum Yields ◽  
Absorption Bands ◽  
Low Light ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Near Ir ◽  
Interesting Class ◽  
High Fluorescence ◽  
Significant Wavelength

Subphthalocyanine (SubPc) macrocycles are known as an interesting class of nonplanar aromatic dyes. Despite documented high fluorescence and singlet oxygen quantum yields, the properties of SubPcs in photodynamic therapy (PDT) are underestimated, because their absorption bands do not reach a significant wavelength range. With this in mind, we combined a SubPc ring and a SubPc ring by introducing a common benzene ring and obtained a SubPc dimer (2) and trimer (3) with the Q-band at the near-IR region, owing to the expansion of the [Formula: see text] electron conjugated system. In this study, we reported 1O2 generation abilities of 2 and 3based on the applied absolute singlet oxygen quantum yields ([Formula: see text]absolute). Subsequent research revealed that 2 and 3 showed the potential to generate 1O2 to not only in toluene but also in DMSO. Although the photocytotoxicity of 2 and 3 were investigated upon photo-irradiation with a low light dose of approximately 1.5 J/cm2, 2 and 3 showed almost negligible toxic properties toward HEp2 cells.

Laser fluorescence studies of HF rotational relaxation

1977 ◽  
Vol 24 (2) ◽  
pp. 219-226 ◽  
Author(s):  
N.C. Lang ◽  
J.C. Polanyi ◽  
J. Wanner
Keyword(s):  
Laser Fluorescence ◽  
Rotational Relaxation ◽  
Fluorescence Studies

Steady-state and time-resolved fluorescence studies on interactions of carbon “quantum” dots with nitrotoluenes

2017 ◽  
Vol 468 ◽  
pp. 300-307 ◽  
Author(s):  
Gregory E. LeCroy ◽  
K.A. Shiral Fernando ◽  
Christopher E. Bunker ◽  
Ping Wang ◽  
Nicholas Tomlinson ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Steady State ◽  
Carbon Quantum Dots ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Fluorescence Studies

H-bond sensing with 3-hydroxyflavones: steady-state and time-resolved fluorescence studies

2004 ◽  
Author(s):  
Vasyl V. Shynkar ◽  
Andrey S. Klymchenko ◽  
Alexander P. Demchenko ◽  
Yves Mely
Keyword(s):  
Steady State ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Fluorescence Studies

Steady-state and time-resolved fluorescence studies of fluorescent imprinted polymers

2003 ◽  
Vol 102-103 ◽  
pp. 774-781 ◽  
Author(s):  
Barbara Wandelt ◽  
Alina Mielniczak ◽  
Petra Turkewitsch ◽  
Stanislaw Wysocki
Keyword(s):  
Steady State ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Imprinted Polymers ◽  
Fluorescence Studies

Laser fluorescence studies of molecular iodine

1978 ◽  
Vol 35 (3) ◽  
pp. 617-637 ◽  
Author(s):  
R. Clark ◽  
A.J. McCaffery
Keyword(s):  
Molecular Iodine ◽  
Laser Fluorescence ◽  
Fluorescence Studies
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