New trans-stilbene derivatives with large two-photon absorption cross-section and non-linear optical susceptibility values – a theoretical investigation

2015 ◽  
Vol 17 (18) ◽  
pp. 12299-12309 ◽  
Author(s):  
Varun Kundi ◽  
Pompozhi Protasis Thankachan
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Photon Absorption ◽  
Active Materials ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Optical Susceptibility ◽  
Trans Stilbene ◽  
Donor Acceptor ◽  
Stilbene Derivatives

In the present study, newly designed TSB derivatives decorated with suitable donor–acceptor groups have large TPA cross-sections and can be used as potential two-photon active materials.

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.

Strategy towards large two-photon absorption cross-sections for diketopyrrolopyrroles

2015 ◽  
Vol 3 (4) ◽  
pp. 742-749 ◽  
Author(s):  
Anna Purc ◽  
Krzysztof Sobczyk ◽  
Yusuke Sakagami ◽  
Akihiro Ando ◽  
Kenji Kamada ◽  
...  
Keyword(s):  
Cross Sections ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Donor Acceptor

Decorating diketopyrrolopyrroles with strongly electron-rich heterocycles led to donor–acceptor–donor architectures possessing two-photon brightness 850–1900 GM.

Water-Soluble Paracyclophane Fluorophores with Large Two-Photon Action Cross Sections

2005 ◽  
Vol 871 ◽  
Author(s):  
Han Young Woo ◽  
Dmitry Korystov ◽  
Alexander Mikhailovsky ◽  
Guillermo C. Bazan
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Solvent Polarity ◽  
Water Soluble ◽  
Photon Absorption ◽  
Significant Drop ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Donor Ability ◽  
Fine Tune

AbstractA series of tetradonor substituted [2.2]paracyclophane-based two-photon absorption (TPA) fluorophores were designed, synthesized and characterized. Different substituents were chosen to modulate the conjugation and the donor strength and to allow the molecules to be neutral (N series, organic-soluble) or charged (C series, water-soluble). The overall set of compounds series allows us to examine the correlation among the solvent polarity, donor ability of the substituents, and TPA action cross section (ηδd, where δ is the TPA cross section and η is the quantum yield). In water, a significant drop of both δ and η is observed, approximately one-third relative to those in toluene. Weaker donors and/or weaker acceptors with enhanced conjugation are a better choice due to a minimized quenching related to strong charge transfer (CT) upon excitation. One thus needs to fine-tune the magnitude of CT and find an optimal balance among CT,δ and η.

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.

The Medium-Depending Fluorescence of Quadrupolar Donor-Acceptor-Donor Substituted Distyrylbenzenes with High Two-Photon Absorption Cross-Sections

2006 ◽  
Vol 937 ◽  
Author(s):  
Heiner Detert ◽  
Volker Schmitt ◽  
Stefan Glang
Keyword(s):  
Cross Sections ◽  
Visible Spectrum ◽  
Solvent Polarity ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Substitution Pattern ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Donor Acceptor ◽  
Emitting Species

ABSTRACT1,4-Distyrylbenzenes with terminal dialkylamino groups and a central 2,5-disubstitution with electron-accepting groups were prepared via twofold Horner-olefination. These chromophores with a quadrupolar donor-acceptor-donor substitution and C2-symmetry absorb in the violet to green region of the visible spectrum exhibit large two-photon-absorption cross-sections when irrdiated in the NIR. Whereas a variation of the solvent polarity only slightly alters the absorption spectra, the fluorescence appears to be highly responsive. Besides a positive solvatochromism, the emission is very sensitive towards protonation. Quenching or appearance of new emitting species depends on the substitution pattern and is controlled by the concentration of the acid.

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