A small-molecule with a large two-photon absorption cross-section serves as a membrane-permeable ribonucleic acid (RNA) probe for live cell imaging

2018 ◽  
Vol 42 (17) ◽  
pp. 14325-14331 ◽  
Author(s):  
Ruiqing Feng ◽  
Longlong Li ◽  
Bing Li ◽  
Jinhui Li ◽  
Dan Peng ◽  
...  
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Live Cell Imaging ◽  
Plasma Membranes ◽  
Cell Imaging ◽  
Photon Absorption ◽  
Absorption Cross ◽  
High Permeability ◽  
Two Photon Absorption ◽  
Two Photon

DMI could light up the RNA of the nucleus and the cytoplasm in living systems, which not only exhibits larger two-photon absorption cross-sections (981 GM), but also displays high-permeability to plasma membranes of vigorous cells.

Tetraphenylethene end-capped [1,2,5]thiadiazolo[3,4-c]pyridine with aggregation-induced emission and large two-photon absorption cross-sections

RSC Advances ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 1500-1506 ◽  
Author(s):  
Tao Jiang ◽  
Yi Qu ◽  
Bo Li ◽  
Yuting Gao ◽  
Jianli Hua
Keyword(s):  
Cross Sections ◽  
Cell Imaging ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Aggregation Induced Emission ◽  
Two Photon Absorption ◽  
Two Photon ◽  
A Cell

New two-photon absorption dyes (TPEPT1 and TPEPT2) were designed and synthesized. These materials show different 2PA properties and unique AIE effects, in which TPEPT1 with higher brightness was used to perform a cell-imaging proposal.

Alkyl-triphenylamine end-capped triazines with AIE and large two-photon absorption cross-sections for bioimaging

2014 ◽  
Vol 2 (31) ◽  
pp. 6353-6361 ◽  
Author(s):  
Yuting Gao ◽  
Yi Qu ◽  
Tao Jiang ◽  
Hao Zhang ◽  
Nannan He ◽  
...  
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Absorption Cross Section ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Two Photon Absorption ◽  
Two Photon

Three alkyl-triphenylamine end-capped triazines (ATT-(1–3)) with AIE were synthesized, and the two-photon absorption cross section of ATT-3 was 10 003 GM.

scholarly journals CW Optical Limiting Study in Disperse Yellow Dye-doped PMMA-MA Polymer Films

2016 ◽  
Vol 5 (3) ◽  
pp. 129 ◽  
Author(s):  
Shubrajyotsna Aithal ◽  
P. S. Aithal ◽  
G. K. Bhat
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Continuous Wave ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Reverse Saturation Absorption ◽  
Cw Laser ◽  
Saturation Absorption

<div><p><em>Molecules with high two-photon absorption (TPA) cross section and the molecules which have reverse saturation absorption (RSA) cross section are of great interest today because of their application in three-dimensional optical data storage and photonic switches. During last forty years, several techniques have been developed to determine the two-photon absorption cross-sections and reverse saturation absorption cross-sections of the materials. This includes direct methods, such as nonlinear transmission and Z-scan methods and indirect methods, such as two-photon excited fluorescence and two-photon pump-probe transient absorption spectroscopy. During recent years, the organic dye-doped polymer films getting more attention due to their advantages to fabricate photonics devices. In this paper, we have studied the nonlinear optical properties like nonlinear absorption and nonlinear refraction of an azo dye Disperse yellow-7 (DY-7) doped in Polymethyl methacrylate-methacrylic acid (PMMA-MA) polymer matrix using open aperture and closed aperture Z-scan experimental methods using continuous wave (CW) laser. The optical limiting properties of these films are also studied in Type 1 and Type 2 configurations at different input power using continuous wave (CW) laser beams of 532 nm wavelength.</em></p></div>

DOUBLY RESONANT TWO-PHOTON ABSORPTION CROSS-SECTIONS: IT DOES NOT GET ANY BIGGER THAN THIS

2004 ◽  
Vol 13 (03n04) ◽  
pp. 461-466 ◽  
Author(s):  
MARK G. KUZYK
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Nonlinear Interaction ◽  
Optical Switching ◽  
Electron System ◽  
Photon Absorption ◽  
Nonlinear Susceptibility ◽  
Absorption Cross ◽  
Two Photon Absorption ◽  
Two Photon

Ever since researchers first probed materials with light, a natural question they have asked pertains to the strength of this interaction. Can materials be made to more strongly absorb light at certain wavelengths, thereby yielding vibrant colors? Can the nonlinear interaction between two beams be used to make an optical switching device? How efficiently can we convert the frequency of light through a nonlinear interaction? All of these questions, in effect, are the same. Equivalently, the question can be phrased as, "how large can we make the linear or the nonlinear susceptibility?" In this paper, we apply sum rules to calculate the maximum limit of the doubly resonant two-photon absorption cross-section. We find that even for a single electron system, the cross-section can exceed δ=105 GM .

Small molecules based on diphenylamine and carbazole with large two-photon absorption cross sections and extraordinary AIEE properties

RSC Advances ◽  
2014 ◽  
Vol 4 (73) ◽  
pp. 38939-38942 ◽  
Author(s):  
Guojian Tian ◽  
Wei Huang ◽  
Shengyun Cai ◽  
Haitao Zhou ◽  
Bo Li ◽  
...  
Keyword(s):  
Small Molecules ◽  
Cross Section ◽  
Cross Sections ◽  
Absorption Cross Section ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Aggregation Induced Emission ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Emission Enhancement

Two simple small molecules based on diphenylamine (T1) and carbazole (T2) have been synthesized and characterized. Both dyes exhibit extraordinary aggregation-induced emission enhancement properties and high corresponding quantum efficiencies of 11.5% and 16.0%. The value of the two-photon absorption cross-section for T1 is 1240 GM.

scholarly journals Rational design of asymmetric red fluorescent probes for live cell imaging with high AIE effects and large two-photon absorption cross sections using tunable terminal groups

2016 ◽  
Vol 7 (7) ◽  
pp. 4527-4536 ◽  
Author(s):  
Zheng-Feng Chang ◽  
Ling-Min Jing ◽  
Bin Chen ◽  
Mengshi Zhang ◽  
Xiaolei Cai ◽  
...  
Keyword(s):  
Cross Sections ◽  
Live Cell Imaging ◽  
Rational Design ◽  
Cell Imaging ◽  
Live Cell ◽  
Photon Absorption ◽  
Red Emission ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Donor Acceptor

Donor–acceptor π-conjugated aggregation-induced red emission materials for live cell imaging.

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