A Self‐Assembled Nanohybrid Composed of Fluorophore–Phenylamine Nanorods and Ag Nanocrystals: Energy Transfer, Wavelength Shift of Fluorescence and TPEF Applications for Live‐Cell Imaging

Kong, Lin; Yang, Jiaxiang; Li, Shengli; Zhang, Qiong; Xue, Zhao-Ming; Zhou, Hu; Wu, Jieying; Jin, Baokang; Tian, Yupeng

doi:10.1002/chem.201302874

Cited by 7 publications

(3 citation statements)

References 62 publications

(49 reference statements)

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“…Considering all the above aspects, 2-(4-(dihexylamino)-benzylidene)-malononitrile (L) (Figure 10) [116], was used to couple with AgNCs, as the hexyl chain could be employed as both electron-donor unit and a flexible chain to increase the solubility of the compound. The dicyano group was used as an electron-acceptor unit, and the two units were linked by a vinyl bond to form a D-π-A structure.…”

Section: Design Strategies Structure-property Relationships and mentioning

confidence: 99%

Lighting the Way to See Inside Two-Photon Absorption Materials: Structure–Property Relationship and Biological Imaging

et al. 2017

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The application of two-photon absorption (2PA) materials is a classical research field and has recently attracted increasing interest. It has generated a demand for new dyes with high 2PA cross-sections. In this short review, we briefly cover the structure-2PA property relationships of organic fluorophores, organic-inorganic nanohybrids and metal complexes explored by our group. (1) The two-photon absorption cross-section (δ) of organic fluorophores increases with the extent of charge transfer, which is important to optimize the core, donor-acceptor pair, and conjugation-bridge to obtain a large δ value. Among the various cores, triphenylamine appears to be an efficient core. Lengthening of the conjugation with styryl groups in the D-π-D quadrupoles and D-π-A dipoles increased δ over a long wavelength range than when vinylene groups were used. Large values of δ were observed for extended conjugation length and moderate donor-acceptors in the near-IR wavelengths. The δ value of the three-arm octupole is larger than that of the individual arm, if the core has electron accepting groups that allow significant electronic coupling between the arms; (2) Optical functional organic/inorganic hybrid materials usually show high thermal stability and excellent optical activity; therefore the design of functional organic molecules to build functional organic-inorganic hybrids and optimize the 2PA properties are significant. Advances have been made in the design of organic-inorganic nanohybrid materials of different sizes and shapes for 2PA property, which provide useful examples to illustrate the new features of the 2PA response in comparison to the more thoroughly investigated donor-acceptor based organic compounds and inorganic components; (3) Metal complexes are of particular interest for the design of new materials with large 2PA ability. They offer a wide range of metals with different ligands, which can give rise to tunable electronic and 2PA properties. The metal ions, including transition metals and lanthanides, can serve as an important part of the structure to control the intramolecular charge-transfer process that drives the 2PA process. As templates, transition metal ions can assemble simple to more sophisticated ligands in a variety of multipolar arrangements resulting in interesting and tailorable electronic and optical properties, depending on the nature of the metal center and the energetics of the metal-ligand interactions, such as intraligand charge-transfer (ILCT) and metal-ligand charge-transfer (MLCT) processes. Lanthanide complexes are attractive for a number of reasons: (i) their visible emissions are quite long-lived; (ii) their absorption and emission can be tuned with the aid of appropriate photoactive ligands; (iii) the accessible energy-transfer path between the photo-active ligands and the lanthanide ion can facilitate efficient lanthanide-based 2PA properties. Thus, the above materials with excellent 2PA properties should be applied in two-photon applications, especially two-photon fluorescence m...

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Section: Design Strategies Structure-property Relationships and mentioning

confidence: 99%

Lighting the Way to See Inside Two-Photon Absorption Materials: Structure–Property Relationship and Biological Imaging

et al. 2017

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“…13,14 The nearinfrared absorption, which is attributed to the longitudinal surface plasmon resonance, leads to numerous applications including photosensitizers in photothermal therapy and twophoton fluorescence imaging. 21 Owing to the synergistic effects of ligand L and nano-Ag components, the exciton-plasmon interactions between them increase, and the strength of the donor-acceptor interaction within the nano-hybrids changes the fluorescence lifetime (t), two-photon absorption (TPA) coefficient (b), TPA cross section (s), nonlinear refractive index (g) and third order nonlinear optical susceptibility (w (3) ). Terpyridyl derivatives, which are endowed with a rigid conjugated plane, good hole effect and electron-transporting properties, can be regarded as ideal nonlinear optical (NLO) materials.…”

Section: Introductionmentioning

confidence: 99%

“…The processes comprised of a series of photophysical events, such as the plasmonexciton coupling effect, energy-transfer and charge-transfer processes. 21 Owing to the synergistic effects of ligand L and nano-Ag components, the exciton-plasmon interactions between them increase, and the strength of the donor-acceptor interaction within the nano-hybrids changes the fluorescence lifetime (t), two-photon absorption (TPA) coefficient (b), TPA cross section (s), nonlinear refractive index (g) and third order nonlinear optical susceptibility (w (3) ). The obtained results suggest that the dye-metal nanohybrid has good TPA activity and may be a potential candidate for new NLO materials.…”

Section: Introductionmentioning

confidence: 99%

Formation and nonlinear optical properties of Ag nanocrystals capped with the conjugated ligand carbazolyl styryl terpyridine

et al. 2015

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The third-order nonlinear materials have been the focus of present research. It is known that the w (3) value of the organic optical material is generally small, and hardly displays any evident third order nonlinear effect.However, the w (3) value was significantly improved when the organic ligands were combined with nano-Ag due to the increase of surface plasmon resonance. The nano-Ag changes its local electric field, and in turn causes a regional interaction between the ligand and the metal clusters. In this article, a new optical carbazole derivative (E)-2-(4-([2,2 0 :6 0 ,2 00 -terpyridine]-4 0 -yl)styryl)-9-hexyl-9H-carbazole, abbreviated as L, has been designed and synthesized. The ligands were combined with nano-Ag, acting on the surface and stabilizing the system without any extra control such as surfactant and pH, which may be explained by the theory of hard and soft acid-base. Careful characterizations have been performed by UV-vis absorption spectroscopy, 1 H NMR spectroscopy, FT-IR, XRD and TEM. Particular properties have been shown by fluorescence spectra, fluorescence lifetime, Raman spectrum, non-linear optical response and cyclic voltammetry curve. The results indicate that the nano-composite L-Ag NCs have a stronger Raman enhancement effect, shorter fluorescence lifetime and larger two-photon absorption (TPA) when compared to the free ligand L. The data for the TPA cross-section value (s = 1336.85 GM), nonlinear refractive index (g = 2.23 Â 10 À13 cm 2 W À1 ) and third order nonlinear optical susceptibility (Re(w (3) ) = 1.16 Â 10 À11 esu) are measured and discussed.

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Synthesis, nonlinear optical properties and cellular imaging of hybrid ZnS nanoparticles capped with conjugated terpyridine derivatives

et al. 2017

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A Self‐Assembled Nanohybrid Composed of Fluorophore–Phenylamine Nanorods and Ag Nanocrystals: Energy Transfer, Wavelength Shift of Fluorescence and TPEF Applications for Live‐Cell Imaging

Cited by 7 publications

References 62 publications

Lighting the Way to See Inside Two-Photon Absorption Materials: Structure–Property Relationship and Biological Imaging

Lighting the Way to See Inside Two-Photon Absorption Materials: Structure–Property Relationship and Biological Imaging

Formation and nonlinear optical properties of Ag nanocrystals capped with the conjugated ligand carbazolyl styryl terpyridine

Synthesis, nonlinear optical properties and cellular imaging of hybrid ZnS nanoparticles capped with conjugated terpyridine derivatives

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