Fluorescence, optical absorption and third-order nonlinear optical properties of terbium (III) complex embedded into DNA-CTMA matrix

Lazăr, Cosmina Andreea; Kajzar, F.; Rău, Ileana; Manea, Adrian

doi:10.1016/j.jlumin.2016.10.010

Cited by 10 publications

(3 citation statements)

References 38 publications

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“…To address these problems, researchers are designing new chemotherapeutic agents based on transition metal ions. Many metal complexes exhibit their effect as drugs by binding to DNA or proteins using different binding methods, and is the basic mode of action of many well known drugs . The DNA interaction phenomenon may be useful in the design of selective and effective new pharmacological compounds.…”

Section: Introductionmentioning

confidence: 99%

Fluorescence and absorption studies of DNA–Pd(II) complex interaction: Synthesis, spectroanalytical investigations and biological activities

et al. 2019

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Novel palladium(II) complexes (7a–7e) of substituted quinoline derivatives were synthesized. The complexes were characterized using various techniques such as thermogravimetric analysis (TGA), elemental analysis, conductance measurement, mass, absorption, infra‐red (IR), 1H NMR, 13C NMR and energy‐dispersive X‐ray spectroscopy (EDX). Complexes for herring sperm DNA (HS DNA) binding were explored and absorption titration and the binding constant (Kb) as well as Gibb's free energy were evaluated. Complex 7d exhibited the highest binding constant, therefore the thermodynamic parameters of 7d at different temperatures were evaluated. To support the results of the absorption titration, fluorescence titration, viscosity measurement and molecular docking studies were performed. The fluorescence quenching data as evaluated from Stern–Volmer equation were used to calculate KSV, Kf and the number of binding sites. The results of all these studies were in good agreement with the absorption study. DNA electrophoretic mobility was performed to explore the possible application of metal complexes as artificial metallonucleases. The antibacterial activity of the complexes was accessed against different pathogenic bacteria and cytotoxicity was measured using brine shrimp and S. pombe.

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Section: Introductionmentioning

confidence: 99%

Fluorescence and absorption studies of DNA–Pd(II) complex interaction: Synthesis, spectroanalytical investigations and biological activities

et al. 2019

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“…Tb 3+ strengthened the THG of glass to a level suitable for practical use; note that 1300 nm is a zero-dispersion wavelength in glass, which enhances the cubic nonlinear optical effects ( Fig. 4, F and G ) ( 43 , 44 ). We observed a strong THG signal in vivo in the neocortical layer 2/3 parenchyma against background THG noise.…”

Section: Discussionmentioning

confidence: 98%

Tb ³⁺ -doped fluorescent glass for biology

Okamoto

Ebina

Fujii³

et al. 2021

Sci. Adv.

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Optical investigation and manipulation constitute the core of biological experiments. Here, we introduce a new borosilicate glass material that contains the rare-earth ion terbium(III) (Tb3+), which emits green fluorescence upon blue light excitation, similar to green fluorescent protein (GFP), and thus is widely compatible with conventional biological research environments. Micropipettes made of Tb3+-doped glass allowed us to target GFP-labeled cells for single-cell electroporation, single-cell transcriptome analysis (Patch-seq), and patch-clamp recording under real-time fluorescence microscopic control. The glass also exhibited potent third harmonic generation upon infrared laser excitation and was usable for online optical targeting of fluorescently labeled neurons in the in vivo neocortex. Thus, Tb3+-doped glass simplifies many procedures in biological experiments.

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“…Considering their simple fabrication process for electrical and optical applications, researchers consider the use of metal ions (M 2+ ) as specifically functionalized materials in conjunction with DNA to be one of the promising candidates. We can treat M 2+ (e.g., Cu 2+ , Ni 2+ , and Co 2+ ) as ligands that bind to DNA selectively (intercalation between a base pair and electrostatic binding to PO 4 -) to construct a system with novel functionalities [9][10][11][12][13][14][15]. In addition, metal complexes could regulate DNA functions by targeting gene sequences, acting as checkpoints for transcription and translation [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Phase, current, absorbance, and photoluminescence of double and triple metal ion-doped synthetic and salmon DNA thin films

et al. 2017

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We fabricated synthetic double-crossover (DX) DNA lattices and natural salmon DNA (SDNA) thin films, doped with 3 combinations of double divalent metal ions (M)-doped groups (Co-Ni, Cu-Co, and Cu-Ni) and single combination of a triple M-doped group (Cu-Ni-Co) at various concentrations of M ([M]). We evaluated the optimum concentration of M ([M]) (the phase of M-doped DX DNA lattices changed from crystalline (up to ([M]) to amorphous (above [M])) and measured the current, absorbance, and photoluminescent characteristics of multiple M-doped SDNA thin films. Phase transitions (visualized in phase diagrams theoretically as well as experimentally) from crystalline to amorphous for double (Co-Ni, Cu-Co, and Cu-Ni) and triple (Cu-Ni-Co) dopings occurred between 0.8 mM and 1.0 mM of Ni at a fixed 0.5 mM of Co, between 0.6 mM and 0.8 mM of Co at a fixed 3.0 mM of Cu, between 0.6 mM and 0.8 mM of Ni at a fixed 3.0 mM of Cu, and between 0.6 mM and 0.8 mM of Co at fixed 2.0 mM of Cu and 0.8 mM of Ni, respectively. The overall behavior of the current and photoluminescence showed increments as increasing [M] up to [M], then decrements with further increasing [M]. On the other hand, absorbance at 260 nm showed the opposite behavior. Multiple M-doped DNA thin films can be used in specific devices and sensors with enhanced optoelectric characteristics and tunable multi-functionalities.

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Fluorescence, optical absorption and third-order nonlinear optical properties of terbium (III) complex embedded into DNA-CTMA matrix

Cited by 10 publications

References 38 publications

Fluorescence and absorption studies of DNA–Pd(II) complex interaction: Synthesis, spectroanalytical investigations and biological activities

Fluorescence and absorption studies of DNA–Pd(II) complex interaction: Synthesis, spectroanalytical investigations and biological activities

Tb ³⁺ -doped fluorescent glass for biology

Phase, current, absorbance, and photoluminescence of double and triple metal ion-doped synthetic and salmon DNA thin films

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Fluorescence, optical absorption and third-order nonlinear optical properties of terbium (III) complex embedded into DNA-CTMA matrix

Cited by 10 publications

References 38 publications

Fluorescence and absorption studies of DNA–Pd(II) complex interaction: Synthesis, spectroanalytical investigations and biological activities

Fluorescence and absorption studies of DNA–Pd(II) complex interaction: Synthesis, spectroanalytical investigations and biological activities

Tb 3+ -doped fluorescent glass for biology

Phase, current, absorbance, and photoluminescence of double and triple metal ion-doped synthetic and salmon DNA thin films

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Product

Resources

About

Tb ³⁺ -doped fluorescent glass for biology