Design and Synthesis of Triphenylamine Based Cyano Stilbenes for Picric Acid Sensing and Two Photon Absorption Applications

2021 ◽  
Vol 6 (44) ◽  
pp. 12300-12308
Author(s):  
Arivalagan Shabashini ◽  
Venkadeshkumar Ramar ◽  
Balasubramanian Karthikeyan ◽  
Manas K Panda ◽  
Ganesh Chandra Nandi
Keyword(s):  
Picric Acid ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Design And Synthesis ◽  
Two Photon

Design and synthesis of new optical-power-limiting chromophores with enhanced two-photon absorption

1999 ◽  
Author(s):  
Charles W. Spangler ◽  
El H. Elandaloussi ◽  
Martin K. Casstevens ◽  
Deepak N. Kumar ◽  
John F. Weibel ◽  
...  
Keyword(s):  
Optical Power ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Design And Synthesis ◽  
Two Photon ◽  
Optical Power Limiting

The Design and Synthesis of New Organic Molecules with Large Two-Photon Absorption Cross-Sections for Optical Limiting Applications

1997 ◽  
Vol 479 ◽  
Author(s):  
B. A. Reinhardt ◽  
L. L. Brott ◽  
S. J. Clarson ◽  
R. Kannan ◽  
A. G. Dillard
Keyword(s):  
Cross Sections ◽  
Nonlinear Optical ◽  
Organic Molecules ◽  
Optical Limiting ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Two Photon Absorption ◽  
Design And Synthesis ◽  
Two Photon ◽  
Nlo Property

AbstractThe molecular structure / nonlinear optical (NLO) property relationship is explored with seven recently synthesized chromophores. Two symmetrical compounds were made using electron withdrawing groups separated by an electron rich core while five asymmetrical molecules were developed using electron donating and withdrawing groups coupled by a it electron bridging group. Pendant chains were added to some of the chromophores to improve processibility. Their syntheses are described and their optical limiting properties discussed.

scholarly journals Sensing Performance and Efficiency of Two Energy Transfer-Based Two-Photon Fluorescent Probes for pH

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4407
Author(s):  
Yujin Zhang ◽  
Wei Hu
Keyword(s):  
Energy Transfer ◽  
Fluorescent Probes ◽  
Energy Transfer Process ◽  
Energy Transfer Efficiency ◽  
Photon Absorption ◽  
Biological Processes ◽  
Two Photon Absorption ◽  
Design And Synthesis ◽  
Two Photon ◽  
Ph Values

The design and synthesis of fluorescent probes for monitoring pH values inside living cells have attracted great attention, due to the important role pH plays in many biological processes. In this study, the optical properties of two different two-photon fluorescent probes for pH are studied. The ratiometric sensing of the probes are theoretically illustrated. Meanwhile, the recognitional mechanisms of the probes are investigated, which shows the energy transfer process when react with H+. Specially, the calculated results demonstrate that Probe1 possesses a higher energy transfer efficiency and a larger two-photon absorption cross-section than Probe2, indicating it to be a preferable pH fluorescent probe. Therefore, the influence of connection between the donor and the acceptor on the sensing performances of the probe is demonstrated. Our results help to understand the experimental observations and provide a theoretical basis to synthesize efficient two-photon fluorescent probes for monitoring pH changes.

Cooperative porphyrin-quadrupolar based triad for combined two-photon induced fluorescence and singlet oxygen generation

2017 ◽  
Vol 21 (02) ◽  
pp. 77-87 ◽  
Author(s):  
Jean-Baptiste Verlhac ◽  
Guillaume Clermont ◽  
Mireille Blanchard-Desce
Keyword(s):  
Singlet Oxygen ◽  
Photon Absorption ◽  
Absorption Properties ◽  
Oxygen Generation ◽  
Two Photon Absorption ◽  
Design And Synthesis ◽  
Two Photon ◽  
Singlet Oxygen Generation ◽  
Potential Applications ◽  
Order Of Magnitude

The design and synthesis of a cooperative multichromophoric triad system which combines the large two-photon absorption properties of fluorene-cored bis-donor quadropolar dyes and the remarkable sensitizing properties of the porphyrin subunit (i.e. high intersystem crossing and ability to produce singlet oxygen by energy transfer to oxygen from its triplet excited state) is described. After irradiation the energy can be transferred from the quadrupolar chromophores to the porphyrin with an estimated 80% efficiency via a FRET process. Moreover both the two-photon absorption properties of the quadrupolar subunits and the sensitizing and fluorescence properties of the porphyrin are retained indicating that deleterious competing processes (such as photo-induced electron transfer) are prevented in such molecular architectures thanks to the implemented design. As a result, the two-photon absorption induced singlet oxygen generation efficiency of the triad in the NIR region is found to be enhanced by an order of magnitude as compared to the porphyin subunit. Potential applications of these porphyrin-based multichromophoric systems for photodynamic therapy based upon two-photon excitation in the NIR region might be possible since it overcomes the low two-photon absorption response of porphyrin while fully retaining their remarkable photosensitizing properties.

Design and synthesis of heterocyclic multi-branched dyes for two-photon absorption

2003 ◽  
Vol 139 (3) ◽  
pp. 795-797 ◽  
Author(s):  
A. Abbotto ◽  
L. Beverina ◽  
S. Bradamante ◽  
A. Facchetti ◽  
G.A. Pagani ◽  
...  
Keyword(s):  
Photon Absorption ◽  
Two Photon Absorption ◽  
Design And Synthesis ◽  
Two Photon

Design and Synthesis of Dendrimers with Enhanced Two-Photon Absorption

1999 ◽  
Vol 561 ◽  
Author(s):  
E. H. Elandaloussi ◽  
C. W. Spangler ◽  
C. Dirk ◽  
M. Casstevens ◽  
D. Kumar ◽  
...  
Keyword(s):  
Cross Sections ◽  
Photon Absorption ◽  
Preliminary Evaluation ◽  
Third Order ◽  
Two Photon Absorption ◽  
Design And Synthesis ◽  
Two Photon ◽  
Repeat Units ◽  
State Measurement ◽  
Bipolaron State

ABSTRACTModel dendrimers based on bis-(diphenylamino)stilbene repeat units have been synthesized and shown to have very stable bipolaronic charge states. Calculations at the AM-1 level predict two orders magnitude enhancement in the third-order nonlinearity in going from the neutral to bipolaron state. Measurement of two-photon cross-sections for PPV dimers with attached diphenylamino donor groups show enhanced two-photon cross-sections for ns pulses. Preliminary evaluation of one of the model dendrimers indicates even larger two-photon cross-sections are possible.

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