scholarly journals Fluorene-based fluorescent probes with high two-photon action cross-sections for biological multiphoton imaging applications

2005 ◽  
Vol 10 (5) ◽  
pp. 051402 ◽  
Author(s):  
Katherine J. Schafer-Hales ◽  
Kevin D. Belfield ◽  
Sheng Yao ◽  
Peter K. Frederiksen ◽  
Joel M. Hales ◽  
...  
Keyword(s):  
Cross Sections ◽  
Fluorescent Probes ◽  
Multiphoton Imaging ◽  
Two Photon

scholarly journals Polarity-active NIR probes with strong two-photon absorption and ultrahigh binding affinity of insulin amyloid fibrils

2021 ◽  
Author(s):  
Li Li ◽  
Zheng Lv ◽  
Zhongwei Man ◽  
Zhenzhen Xu ◽  
YuLing Wei ◽  
...  
Keyword(s):  
Neurodegenerative Diseases ◽  
Binding Affinity ◽  
Fluorescent Probes ◽  
Amyloid Fibrils ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Medical Diagnostic

Amyloid fibrils are associated with many neurodegenerative diseases. In-situ and in-vivo visualization of amyloid fibrils is important for medical diagnostic and requires fluorescent probes with both excitation and emission wavelengths in...

Theoretical studies on the one- and two-photon absorption of tetrabenzoporphyrins and phthalocyanines

2004 ◽  
Vol 82 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Xin Zhou ◽  
Ai-Min Ren ◽  
Ji-Kang Feng ◽  
Xiao-Juan Liu
Keyword(s):  
Dipole Moment ◽  
Cross Sections ◽  
Density Functional ◽  
Transition Dipole Moment ◽  
Photon Absorption ◽  
Transition Dipole ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Order Of Magnitude ◽  
The One

The one-photon absorption (OPA) properties of tetrabenzoporphyrins (TBPs) and phthalocyanines (Pcs) were studied using the semiempirical ZINDO method and time-dependent density functional theory (TDDFT), respectively. The compared results confirmed that the semiempirical ZINDO method was reasonably reliable when calculating the OPA of tetrabenzoporphyrins and phthalocyanines. On the basis of the OPA properties obtained from the ZINDO method, two-photon absorption (TPA) properties of two series of molecules were investigated, using ZINDO and sum-over-states (SOS) methods. The results showed that the TPA cross-sections of all molecules were in the range of 220.6 × 10–50 – 345.9 × 10–50 cm4·s·photon–1, which were in the same order of magnitude as the values reported in the literature. The relatively larger δ(ω) value for Pcs with respect to that for corresponding TBPs originates from larger intramolecular charge transfer, which can be characterized by the difference of dipole moment between S0 and S1 and the transition dipole moment between S1 and S5.Key words: two-photon absorption, ZINDO, sum-over-states, tetrabenzoporphyrin, phthalocyanines.

NIR-region two-photon fluorescent probes for Fe3+/Cu2+ ions based on pyrimidine derivatives with different flexible chain

2016 ◽  
Vol 222 ◽  
pp. 574-578 ◽  
Author(s):  
Qiong Zhang ◽  
Xiaohe Tian ◽  
Hui Wang ◽  
Zhangjun Hu ◽  
Jieying Wu ◽  
...  
Keyword(s):  
Fluorescent Probes ◽  
Pyrimidine Derivatives ◽  
Flexible Chain ◽  
Two Photon

Determination of absolute two-photon excitation cross sections by in situ second-order autocorrelation

1995 ◽  
Vol 20 (23) ◽  
pp. 2372 ◽  
Author(s):  
Chris Xu ◽  
Winfried Denk ◽  
Jeffrey Guild ◽  
Watt W. Webb
Keyword(s):  
Cross Sections ◽  
Second Order ◽  
Two Photon ◽  
Photon Excitation ◽  
Excitation Cross Sections ◽  
Two Photon Excitation

Theoretical investigation and design of two-photon fluorescent probes for visualizing β-galactosidase activity in living cells

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 70960-70971 ◽  
Author(s):  
Chun Zhang ◽  
Dan Wang ◽  
Li Zhang ◽  
Jing-Fu Guo ◽  
Ai-Min Ren
Keyword(s):  
Theoretical Investigation ◽  
Fluorescent Probes ◽  
Living Cells ◽  
Galactosidase Activity ◽  
Two Photon ◽  
Bio Imaging

The two-photon fluorescent probes show dual signal for β-gal bio-imaging.

Two-Photon Fluorescent Probes for Metal Ions in Live Tissues

2013 ◽  
Vol 53 (4) ◽  
pp. 1794-1803 ◽  
Author(s):  
Avik Ranjan Sarkar ◽  
Dong Eun Kang ◽  
Hwan Myung Kim ◽  
Bong Rae Cho
Keyword(s):  
Metal Ions ◽  
Fluorescent Probes ◽  
Two Photon
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