7 research outputs found
Preparation of Au Nanostructure Arrays for Fluorometry and Biosensors Applications
The paper describes the fabrication of random and ordered gold nanostructure arrays (NSA) of different
morphology using island film thermal annealing and nanoimprint lithography techniques. Structural
parameters of obtained NSA were investigated using atomic force microscopy method. Spectral characteristics
of obtained NSA were studied in air atmosphere, and NSA light extinction spectra exhibited an expressed
plasmon peak. Spectral position of localized surface plasmon resonance can be tuned depending on
geometrical parameters of nanostructures, which is an important factor for resonant investigation methods
of various types of molecular structures. Proposed technological approaches can be used to implement the
resonance fluorometry in electromagnetic field of nanostructures (surface-enhanced fluorescence) method
and in chemical and biosensors based on localized surface plasmon resonance.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3496
Localized surface plasmon resonance in Au nanoprisms on glass substrates
Metal nanocrystals are actual objects for the modern biophysics mainly because of their usage in sensors based on localized surface plasmon resonance (LSPR) and as active substrates for surface-enhanced spectroscopies. This work deals with the experimental and theoretical investigation of optical properties of trigonal and hexagonal Au nanoprisms deposited on the glass substrates. It was confirmed for the studied structures that the LSPR spectra depend on the crystals shape and size. Theoretical modeling the optical properties of plasmon-supporting nanoprisms was performed using the finite-difference time-domain method. The experimentally obtained and theoretically modeled LSPR spectral positions were found to be different, which can be attributed to a high spread of nanoprism shapes and sizes in the same sample and to nanocrystals aggregation effect confirmed by microscopy data. Additionally, the distributions of the electric field in the vicinity of nanoprisms under the LSPR conditions were simulated, and a strong field intensity enhancement at the corners of the prisms was demonstrated, which implies the promising application of such plasmonic nanostructures for surfaceenhanced spectroscopy
Factor of interfacial potential for the surface plasmon-polariton resonance sensor response
In this work, we investigate how the application of an external potential
difference to the sensitive gold-electrolyte interface influences the optical response of a
sensor based on the surface plasmon-polariton resonance (SPPR). The SPPR resonant
angle shift was registered for an aqueous solution of sulfuric acid as an electrolyte at
different potential sweep rates. From the measurements of SPPR curves versus the
applied voltage, the potential of zero charge of the gold electrode in the electrolyte
solution was estimated. To explain the external voltage influence on the SPPR sensor
response, a theoretical model was used that takes into account three factors: free electron
concentration change in the space-charge layer (SCL) in the surface layer of gold,
dependence of the capacity of electrical double layer at the interface on the voltage, and
gold film surface roughness
Surface plasmon resonance investigation of DNA hybridization on a sensor surface using gold nanoparticles modified by specific oligonucleotides
Aim. To investigate an influence of the oligonucleotide concentration on their immobilization on the surface of gold nanoparticles (AuNPs), and to study interactions between the AuNPs modified by various oligonucleotides and the oligonucleotides immobilized on the chip of the SPR-based DNA-sensor. Methods. Oligonucleotide immobilization on the surface of AuNPs was investigated by fluorescence spectrometry. The interactions of citrate-stabilized AuNPs modified by oligonucleotides with the oligonucleotides immobilized on the chip of the DNA-sensor were studied by the surface plasmon resonance spectrometry. Results. The initial oligonucleotide concentration influences the level of their immobilization on the surface of citrate-stabilized AuNPs: up to 200 nM the dependence was close to linear, and then saturation was observed at ~ 26 molecules per particle or ~ 0.5Γ10ΒΉΒ³ molecules cmβ»Β². In contrast, the efficiency of immobilization gradually decreased with an increase in the initial oligonucleotide concentration. Using the SPR-based DNA-sensor, the efficient hybridization between oligonucleotides immobilized on the sensor chip and complementary oligonucleotides of various length (short T2-11m and long T2-18m) immobilized on the surface of AuNPs was demonstrated. In case of AuNPs modified by short oligonucleotides, efficient thermal and chemical regenerations of the bioselective element of the DNA-sensor were achieved. Conclusions. Oligonucleotide immobilization on the surface of AuNPs directly depends on the initial oligonucleotide concentration, whereas the initial oligonucleotide concentration and the efficiency of their immobilization on the surface of AuNPs demonstrate the inverse relationship. The efficient hybridization of the oligonucleotides of various lengths immobilized on AuNPs with the oligonucleotides immobilized on the sensor surface as well as the possibility of thermal or chemical regeneration allow the sensor reuse and a strong amplification of the sensor signal.ΠΠ΅ΡΠ°. ΠΠΈΠ²ΡΠ΅Π½Π½Ρ Π²ΠΏΠ»ΠΈΠ²Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² Π½Π° ΡΡ
ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΠ½ΠΎΠΊ Π·ΠΎΠ»ΠΎΡΠ° (AuNPs) ΡΠ° Π²ΠΈΡΠ²Π»Π΅Π½Π½Ρ Π΄Π΅ΡΠΊΠΈΡ
ΠΎΡΠΎΠ±Π»ΠΈΠ²ΠΎΡΡΠ΅ΠΉ Π²Π·Π°ΡΠΌΠΎΠ΄ΡΡ AuNPs, ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΡ
ΡΡΠ·Π½ΠΈΠΌΠΈ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Π· ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½Π° ΡΠΈΠΏΡ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ° ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΡ. ΠΠ΅ΡΠΎΠ΄ΠΈ. Π ΡΠ²Π΅Π½Ρ ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ AuNPs Π΄ΠΎΡΠ»ΡΠ΄ΠΆΡΠ²Π°Π»ΠΈ ΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΠΎΡ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΡΡΡ. ΠΠ·Π°ΡΠΌΠΎΠ΄ΡΡ ΡΡΠ°Π±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ
ΡΠΈΡΡΠ°ΡΠΎΠΌ AuNPs, ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Π· ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½Π° ΡΠΈΠΏΡ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ°, Π²ΠΈΠ²ΡΠ°Π»ΠΈ Π·Π° Π΄ΠΎΠΏΠΎΠΌΠΎΠ³ΠΎΡ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΡΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΡ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΠΈ. ΠΡΠΈ ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ ΡΡΠ°Π±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ
ΡΠΈΡΡΠ°ΡΠΎΠΌ AuNPs ΠΏΠΎΡΠ°ΡΠΊΠΎΠ²Π° ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² Π²ΠΏΠ»ΠΈΠ²Π°Ρ Π½Π° ΡΡΠ²Π΅Π½Ρ ΡΡ
ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ: Π΄ΠΎ 200 Π½Π Π·Π°Π»Π΅ΠΆΠ½ΡΡΡΡ Π±ΡΠ»Π° Π±Π»ΠΈΠ·ΡΠΊΠΎΡ Π΄ΠΎ Π»ΡΠ½ΡΠΉΠ½ΠΎΡ, Π° ΠΏΠΎΡΡΠΌ ΡΠΏΠΎΡΡΠ΅ΡΡΠ³Π°Π»ΠΈ Π½Π°Π±Π»ΠΈΠΆΠ΅Π½Π½Ρ Π΄ΠΎ Π½Π°ΡΠΈΡΠ΅Π½Π½Ρ (~26 ΠΌΠΎΠ»Π΅ΠΊΡΠ» Π½Π° ΠΎΠ΄Π½Ρ ΡΠ°ΡΡΠΈΠ½ΠΊΡ Π°Π±ΠΎ ~0,5 Γ 10ΒΉΒ³ ΠΌΠΎΠ»Π΅ΠΊΡΠ» ΡΠΌβ»Β²). ΠΠ° Π²ΡΠ΄ΠΌΡΠ½Ρ Π²ΡΠ΄ ΡΡΠΎΠ³ΠΎ, Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½ΡΡΡΡ ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ ΠΏΠΎΡΡΡΠΏΠΎΠ²ΠΎ Π·ΠΌΠ΅Π½ΡΡΡΡΡΡΡ ΡΠ°Π·ΠΎΠΌ ΡΠ· Π·Π±ΡΠ»ΡΡΠ΅Π½Π½ΡΠΌ ΠΏΠΎΡΠ°ΡΠΊΠΎΠ²ΠΎΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ². ΠΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΡΡΠΈ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΡ, ΠΏΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΡΠ²Π°Π»ΠΈ Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½Ρ Π³ΡΠ±ΡΠΈΠ΄ΠΈΠ·Π°ΡΡΡ ΠΌΡΠΆ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½Π° ΡΠ΅Π½ΡΠΎΡΠ½ΠΎΠΌΡ ΡΠΈΠΏΡ, ΡΠ° ΠΊΠΎΠΌΠΏΠ»Π΅ΠΌΠ΅Π½ΡΠ°ΡΠ½ΠΈΠΌΠΈ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ ΡΡΠ·Π½ΠΎΡ Π΄ΠΎΠ²ΠΆΠΈΠ½ΠΈ (ΠΊΠΎΡΠΎΡΠΊΡ T2-11m Ρ Π΄ΠΎΠ²Π³Ρ T2-18m), ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ AuNPs. Π£ Π²ΠΈΠΏΠ°Π΄ΠΊΡ AuNPs, ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΊΠΎΡΠΎΡΠΊΠΈΠΌΠΈ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Π±ΡΠ»ΠΈ Π΄ΠΎΡΡΠ³Π½ΡΡΡ Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½Ρ ΡΠ΅ΡΠΌΡΡΠ½Π° ΡΠ° Ρ
ΡΠΌΡΡΠ½Π° ΡΠ΅Π³Π΅Π½Π΅ΡΠ°ΡΡΡ Π±ΡΠΎΡΠ΅Π»Π΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π΅Π»Π΅ΠΌΠ΅Π½ΡΠ° ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ°. ΠΠΈΡΠ½ΠΎΠ²ΠΊΠΈ. Π ΡΠ²Π΅Π½Ρ ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ AuNPs ΠΏΡΡΠΌΠΎ ΠΏΡΠΎΠΏΠΎΡΡΡΠΉΠ½ΠΎ Π·Π°Π»Π΅ΠΆΠΈΡΡ Π²ΡΠ΄ Π²ΠΈΡ
ΡΠ΄Π½ΠΎΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ², ΡΠΎΠ΄Ρ ΡΠΊ Π²ΠΈΡ
ΡΠ΄Π½Π° ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² ΡΠ° Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½ΡΡΡΡ ΡΡ
ΡΠΌ-ΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ AuNPs Π΄Π΅ΠΌΠΎΠ½ΡΡΡΡΡΡΡ Π·Π²ΠΎΡΠΎΡΠ½ΠΈΠΉ Π·Π²βΡΠ·ΠΎΠΊ. ΠΡΠ΅ΠΊΡΠΈΠ²Π½Π° Π³ΡΠ±ΡΠΈΠ΄ΠΈΠ·Π°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² ΡΡΠ·Π½ΠΎΡ Π΄ΠΎΠ²ΠΆΠΈΠ½ΠΈ, ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ
Π½Π° AuNPs, Π· ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ ΡΠ΅Π½ΡΠΎΡΠ°, Π° ΡΠ°ΠΊΠΎΠΆ ΠΌΠΎΠΆΠ»ΠΈΠ²ΡΡΡΡ ΡΠ΅ΡΠΌΡΡΠ½ΠΎΡ Π°Π±ΠΎ Ρ
ΡΠΌΡΡΠ½ΠΎΡ ΡΠ΅Π³Π΅Π½Π΅ΡΠ°ΡΡΡ Π΄ΠΎΠ·Π²ΠΎΠ»ΡΡΡΡ Π±Π°Π³Π°ΡΠΎΡΠ°Π·ΠΎΠ²ΠΎ Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΠ²Π°ΡΠΈ ΡΠ΅Π½ΡΠΎΡ ΡΠ° Π΄ΠΎΡΡΠ³Π°ΡΠΈ Π²Π΅Π»ΠΈΡΠ΅Π·Π½ΠΎΠ³ΠΎ ΠΏΡΠ΄ΡΠΈΠ»Π΅Π½Π½Ρ ΡΠ΅Π½ΡΠΎΡΠ½ΠΎΠ³ΠΎ ΡΠΈΠ³Π½Π°Π»Ρ.Π¦Π΅Π»Ρ. ΠΠ·ΡΡΠ΅Π½ΠΈΠ΅ Π²Π»ΠΈΡΠ½ΠΈΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² Π½Π° ΠΈΡ
ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΡ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ Π·ΠΎΠ»ΠΎΡΠ° (AuNPs) ΠΈ Π²ΡΡΠ²Π»Π΅Π½ΠΈΠ΅ Π½Π΅ΠΊΠΎΡΠΎΡΡΡ
ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠ΅ΠΉ Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΡ AuNPs, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠ°Π·Π»ΠΈΡΠ½ΡΠΌΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Ρ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½Π° ΡΠΈΠΏΠ΅ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΠ°. ΠΠ΅ΡΠΎΠ΄Ρ. Π£ΡΠΎΠ²Π΅Π½Ρ ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ AuNPs ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π»ΠΈ ΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΠΎΠΉ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΠΈΠ΅ΠΉ. ΠΠ·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ ΡΡΠ°Π±ΠΈΠ»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠΈΡΡΠ°ΡΠΎΠΌ AuNPs, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Ρ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½Π° ΡΠΈΠΏΠ΅ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ°, ΠΈΠ·ΡΡΠ°Π»ΠΈ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΠΈΠΈ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΠ°. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΡΠΈ ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΡΠ°Π±ΠΈΠ»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠΈΡΡΠ°ΡΠΎΠΌ AuNPs Π½Π°ΡΠ°Π»ΡΠ½Π°Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΡ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² Π²Π»ΠΈΡΠ΅Ρ Π½Π° ΡΡΠΎΠ²Π΅Π½Ρ ΠΈΡ
ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ: Π΄ΠΎ 200 Π½Π Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΡ Π±ΡΠ»Π° Π±Π»ΠΈΠ·ΠΊΠ° ΠΊ Π»ΠΈΠ½Π΅ΠΉΠ½ΠΎΠΉ, Π° Π·Π°ΡΠ΅ΠΌ Π½Π°Π±Π»ΡΠ΄Π°Π»ΠΈ ΠΏΡΠΈΠ±Π»ΠΈΠΆΠ΅Π½ΠΈΠ΅ ΠΊ Π½Π°ΡΡΡΠ΅Π½ΠΈΡ (~26 ΠΌΠΎΠ»Π΅ΠΊΡΠ» Π½Π° ΠΎΠ΄Π½Ρ ΡΠ°ΡΡΠΈΡΡ ΠΈΠ»ΠΈ ~0,5 Γ 10ΒΉΒ³ ΠΌΠΎΠ»Π΅ΠΊΡΠ» ΡΠΌβ»Β²). Π ΠΎΡΠ»ΠΈΡΠΈΠ΅ ΠΎΡ ΡΡΠΎΠ³ΠΎ, ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ ΠΏΠΎΡΡΠ΅ΠΏΠ΅Π½Π½ΠΎ ΡΠΌΠ΅Π½ΡΡΠ°Π΅ΡΡΡ Π²ΠΌΠ΅ΡΡΠ΅ Ρ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ΠΌ Π½Π°ΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ². ΠΡΠΏΠΎΠ»ΡΠ·ΡΡ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΠ°, ΠΏΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΠΎΠ²Π°Π»ΠΈ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΡΡ Π³ΠΈΠ±ΡΠΈΠ΄ΠΈΠ·Π°ΡΠΈΡ ΠΌΠ΅ΠΆΠ΄Ρ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½Π° ΡΠ΅Π½ΡΠΎΡΠ½ΠΎΠΌ ΡΠΈΠΏΠ΅, ΠΈ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΌΠ΅Π½ΡΠ°ΡΠ½ΡΠΌΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠΉ Π΄Π»ΠΈΠ½Ρ (ΠΊΠΎΡΠΎΡΠΊΠΈΠ΅ T2-11m ΠΈ Π΄Π»ΠΈΠ½Π½ΡΠ΅ T2-18m), ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ AuNPs. Π ΡΠ»ΡΡΠ°Π΅ AuNPs, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΊΠΎΡΠΎΡΠΊΠΈΠΌΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Π±ΡΠ»ΠΈ Π΄ΠΎΡΡΠΈΠ³Π½ΡΡΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΡΠ΅ ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΈ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠ°Ρ ΡΠ΅Π³Π΅Π½Π΅ΡΠ°ΡΠΈΡ Π±ΠΈΠΎΡΠ΅Π»Π΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ° ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ°. ΠΡΠ²ΠΎΠ΄Ρ. Π£ΡΠΎΠ²Π΅Π½Ρ ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ AuNPs ΠΏΡΡ-ΠΌΠΎ ΠΏΡΠΎΠΏΠΎΡΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎ Π·Π°Π²ΠΈΡΠΈΡ ΠΎΡ ΠΈΡΡ
ΠΎΠ΄Π½ΠΎΠΉ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ², ΡΠΎΠ³Π΄Π° ΠΊΠ°ΠΊ ΠΈΡΡ
ΠΎΠ΄Π½Π°Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΡ ΠΎΠ»ΠΈ-Π³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² ΠΈ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΈΡ
ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ AuNPs Π΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΡΡΡ ΠΏΡΠΎΡΠΈΠ²ΠΎΠΏΠΎΠ»ΠΎΠΆΠ½ΡΡ ΡΠ²ΡΠ·Ρ. ΠΡΡΠ΅ΠΊΡΠΈΠ²Π½Π°Ρ Π³ΠΈΠ±ΡΠΈΠ΄ΠΈΠ·Π°ΡΠΈΡ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠΉ Π΄Π»ΠΈΠ½Ρ, ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΡ
Π½Π° AuNPs, Ρ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΠ΅Π½ΡΠΎΡΠ°, Π° ΡΠ°ΠΊΠΆΠ΅ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΈΠ»ΠΈ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅-Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡ ΠΌΠ½ΠΎΠ³ΠΎΠΊΡΠ°ΡΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΡ ΡΠ΅Π½ΡΠΎΡ ΠΈ Π΄ΠΎΡΡΠΈΠ³Π°ΡΡ ΠΎΠ³ΡΠΎΠΌΠ½ΠΎΠ³ΠΎ ΡΡΠΈΠ»Π΅Π½ΠΈΡ ΡΠ΅Π½ΡΠΎΡΠ½ΠΎΠ³ΠΎ ΡΠΈΠ³Π½Π°Π»Π°
Plasmon-enhanced fluorometry based on gold nanostructure arrays. Method and device
In this work, we describe a method of surface-enhanced fluorometry, based on the phenomenon of localized surface plasmon resonance in unordered gold nanostructure arrays. The theoretical approach for the model system βgold nanoparticle-dielectric spacerβ in the electrostatic approximation by solution of Laplaceβs equation is considered. The developed technology for manufacturing the plasmonic substrates as well as design of the novel laser-based compact fluorometer are presented. The arrays of gold nanostructures on solid substrates (nanochips) coated with different thicknesses of SiOβ were developed and fabricated by thermal annealing of gold island films with subsequent dielectric spacer deposition. As an example for verification of the proposed method, the fluorescence properties of the system βgold nanostructures array β SiOβ dielectric coating β Rhodamine 6Gβ were studied. It has been shown that enhancement of dye emission up to 22 times for dielectric coating with the thickness of about 20 nm is possible. Presented method is of importance for the development of the novel nanoscale sensors, biomolecular assays and nanoplasmonic devices
Smart nanocarriers for drug delivery: controllable LSPR tuning
Gold nanostructures are considered as a potential platform for building smart nanocarriers that will form the basis of novel methods of targeted delivery and controlled release of drugs. However, to ensure maximum efficiency of gold nanoparticles upon the drug release via the plasmon-enhanced photothermal effect, it is necessary to optimize their spectral parameters for operation in the human body that requires both theoretical research and development of appropriate methods for nanostructures fabrication. In this work, mathematical modeling of light extinction spectral dependences for gold nanostructures of different morphology was performed to determine their geometric parameters that provide the occurrence of localized surface plasmon resonance (LSPR) in the red and near infrared regions of the spectrum, where the transparency window of biological tissues exists. Based on the results of previous studies and computer modeling, using hollow gold nanoshells to construct smart nanocarriers was found to be most reasonable. A protocol for production of these nanoparticles based on βsilver-goldβ galvanic replacement reaction, which is accompanied by a controlled shift of the LSPR wavelength position, was proposed and described in detail. It is shown that the loading of model biomolecules in hollow gold nanoshells significantly changes the output optical parameters of the system under investigation, which should be taken into account for matching with the laser excitation wavelength during the development of smart nanocarriers
Surface plasmon resonance investigation of DNA hybridization on a sensor surface using gold nanoparticles modified by specific oligonucleotides
Aim. To investigate an influence of the oligonucleotide concentration on their immobilization on the surface of gold nanoparticles (AuNPs), and to study interactions between the AuNPs modified by various oligonucleotides and the oligonucleotides immobilized on the chip of the SPR-based DNA-sensor. Methods. Oligonucleotide immobilization on the surface of AuNPs was investigated by fluorescence spectrometry. The interactions of citrate-stabilized AuNPs modified by oligonucleotides with the oligonucleotides immobilized on the chip of the DNA-sensor were studied by the surface plasmon resonance spectrometry. Results. The initial oligonucleotide concentration influences the level of their immobilization on the surface of citrate-stabilized AuNPs: up to 200 nM the dependence was close to linear, and then saturation was observed at ~ 26 molecules per particle or ~ 0.5Γ10ΒΉΒ³ molecules cmβ»Β². In contrast, the efficiency of immobilization gradually decreased with an increase in the initial oligonucleotide concentration. Using the SPR-based DNA-sensor, the efficient hybridization between oligonucleotides immobilized on the sensor chip and complementary oligonucleotides of various length (short T2-11m and long T2-18m) immobilized on the surface of AuNPs was demonstrated. In case of AuNPs modified by short oligonucleotides, efficient thermal and chemical regenerations of the bioselective element of the DNA-sensor were achieved. Conclusions. Oligonucleotide immobilization on the surface of AuNPs directly depends on the initial oligonucleotide concentration, whereas the initial oligonucleotide concentration and the efficiency of their immobilization on the surface of AuNPs demonstrate the inverse relationship. The efficient hybridization of the oligonucleotides of various lengths immobilized on AuNPs with the oligonucleotides immobilized on the sensor surface as well as the possibility of thermal or chemical regeneration allow the sensor reuse and a strong amplification of the sensor signal.ΠΠ΅ΡΠ°. ΠΠΈΠ²ΡΠ΅Π½Π½Ρ Π²ΠΏΠ»ΠΈΠ²Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² Π½Π° ΡΡ
ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΠ½ΠΎΠΊ Π·ΠΎΠ»ΠΎΡΠ° (AuNPs) ΡΠ° Π²ΠΈΡΠ²Π»Π΅Π½Π½Ρ Π΄Π΅ΡΠΊΠΈΡ
ΠΎΡΠΎΠ±Π»ΠΈΠ²ΠΎΡΡΠ΅ΠΉ Π²Π·Π°ΡΠΌΠΎΠ΄ΡΡ AuNPs, ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΡ
ΡΡΠ·Π½ΠΈΠΌΠΈ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Π· ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½Π° ΡΠΈΠΏΡ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ° ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΡ. ΠΠ΅ΡΠΎΠ΄ΠΈ. Π ΡΠ²Π΅Π½Ρ ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ AuNPs Π΄ΠΎΡΠ»ΡΠ΄ΠΆΡΠ²Π°Π»ΠΈ ΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΠΎΡ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΡΡΡ. ΠΠ·Π°ΡΠΌΠΎΠ΄ΡΡ ΡΡΠ°Π±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ
ΡΠΈΡΡΠ°ΡΠΎΠΌ AuNPs, ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Π· ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½Π° ΡΠΈΠΏΡ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ°, Π²ΠΈΠ²ΡΠ°Π»ΠΈ Π·Π° Π΄ΠΎΠΏΠΎΠΌΠΎΠ³ΠΎΡ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΡΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΡ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΠΈ. ΠΡΠΈ ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ ΡΡΠ°Π±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ
ΡΠΈΡΡΠ°ΡΠΎΠΌ AuNPs ΠΏΠΎΡΠ°ΡΠΊΠΎΠ²Π° ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² Π²ΠΏΠ»ΠΈΠ²Π°Ρ Π½Π° ΡΡΠ²Π΅Π½Ρ ΡΡ
ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ: Π΄ΠΎ 200 Π½Π Π·Π°Π»Π΅ΠΆΠ½ΡΡΡΡ Π±ΡΠ»Π° Π±Π»ΠΈΠ·ΡΠΊΠΎΡ Π΄ΠΎ Π»ΡΠ½ΡΠΉΠ½ΠΎΡ, Π° ΠΏΠΎΡΡΠΌ ΡΠΏΠΎΡΡΠ΅ΡΡΠ³Π°Π»ΠΈ Π½Π°Π±Π»ΠΈΠΆΠ΅Π½Π½Ρ Π΄ΠΎ Π½Π°ΡΠΈΡΠ΅Π½Π½Ρ (~26 ΠΌΠΎΠ»Π΅ΠΊΡΠ» Π½Π° ΠΎΠ΄Π½Ρ ΡΠ°ΡΡΠΈΠ½ΠΊΡ Π°Π±ΠΎ ~0,5 Γ 10ΒΉΒ³ ΠΌΠΎΠ»Π΅ΠΊΡΠ» ΡΠΌβ»Β²). ΠΠ° Π²ΡΠ΄ΠΌΡΠ½Ρ Π²ΡΠ΄ ΡΡΠΎΠ³ΠΎ, Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½ΡΡΡΡ ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ ΠΏΠΎΡΡΡΠΏΠΎΠ²ΠΎ Π·ΠΌΠ΅Π½ΡΡΡΡΡΡΡ ΡΠ°Π·ΠΎΠΌ ΡΠ· Π·Π±ΡΠ»ΡΡΠ΅Π½Π½ΡΠΌ ΠΏΠΎΡΠ°ΡΠΊΠΎΠ²ΠΎΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ². ΠΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΡΡΠΈ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΡ, ΠΏΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΡΠ²Π°Π»ΠΈ Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½Ρ Π³ΡΠ±ΡΠΈΠ΄ΠΈΠ·Π°ΡΡΡ ΠΌΡΠΆ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½Π° ΡΠ΅Π½ΡΠΎΡΠ½ΠΎΠΌΡ ΡΠΈΠΏΡ, ΡΠ° ΠΊΠΎΠΌΠΏΠ»Π΅ΠΌΠ΅Π½ΡΠ°ΡΠ½ΠΈΠΌΠΈ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ ΡΡΠ·Π½ΠΎΡ Π΄ΠΎΠ²ΠΆΠΈΠ½ΠΈ (ΠΊΠΎΡΠΎΡΠΊΡ T2-11m Ρ Π΄ΠΎΠ²Π³Ρ T2-18m), ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ AuNPs. Π£ Π²ΠΈΠΏΠ°Π΄ΠΊΡ AuNPs, ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΊΠΎΡΠΎΡΠΊΠΈΠΌΠΈ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Π±ΡΠ»ΠΈ Π΄ΠΎΡΡΠ³Π½ΡΡΡ Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½Ρ ΡΠ΅ΡΠΌΡΡΠ½Π° ΡΠ° Ρ
ΡΠΌΡΡΠ½Π° ΡΠ΅Π³Π΅Π½Π΅ΡΠ°ΡΡΡ Π±ΡΠΎΡΠ΅Π»Π΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π΅Π»Π΅ΠΌΠ΅Π½ΡΠ° ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ°. ΠΠΈΡΠ½ΠΎΠ²ΠΊΠΈ. Π ΡΠ²Π΅Π½Ρ ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ AuNPs ΠΏΡΡΠΌΠΎ ΠΏΡΠΎΠΏΠΎΡΡΡΠΉΠ½ΠΎ Π·Π°Π»Π΅ΠΆΠΈΡΡ Π²ΡΠ΄ Π²ΠΈΡ
ΡΠ΄Π½ΠΎΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ², ΡΠΎΠ΄Ρ ΡΠΊ Π²ΠΈΡ
ΡΠ΄Π½Π° ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² ΡΠ° Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½ΡΡΡΡ ΡΡ
ΡΠΌ-ΠΌΠΎΠ±ΡΠ»ΡΠ·Π°ΡΡΡ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ AuNPs Π΄Π΅ΠΌΠΎΠ½ΡΡΡΡΡΡΡ Π·Π²ΠΎΡΠΎΡΠ½ΠΈΠΉ Π·Π²βΡΠ·ΠΎΠΊ. ΠΡΠ΅ΠΊΡΠΈΠ²Π½Π° Π³ΡΠ±ΡΠΈΠ΄ΠΈΠ·Π°ΡΡΡ ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΡΠ² ΡΡΠ·Π½ΠΎΡ Π΄ΠΎΠ²ΠΆΠΈΠ½ΠΈ, ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ
Π½Π° AuNPs, Π· ΠΎΠ»ΡΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΡΠΌΠΌΠΎΠ±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ ΡΠ΅Π½ΡΠΎΡΠ°, Π° ΡΠ°ΠΊΠΎΠΆ ΠΌΠΎΠΆΠ»ΠΈΠ²ΡΡΡΡ ΡΠ΅ΡΠΌΡΡΠ½ΠΎΡ Π°Π±ΠΎ Ρ
ΡΠΌΡΡΠ½ΠΎΡ ΡΠ΅Π³Π΅Π½Π΅ΡΠ°ΡΡΡ Π΄ΠΎΠ·Π²ΠΎΠ»ΡΡΡΡ Π±Π°Π³Π°ΡΠΎΡΠ°Π·ΠΎΠ²ΠΎ Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΠ²Π°ΡΠΈ ΡΠ΅Π½ΡΠΎΡ ΡΠ° Π΄ΠΎΡΡΠ³Π°ΡΠΈ Π²Π΅Π»ΠΈΡΠ΅Π·Π½ΠΎΠ³ΠΎ ΠΏΡΠ΄ΡΠΈΠ»Π΅Π½Π½Ρ ΡΠ΅Π½ΡΠΎΡΠ½ΠΎΠ³ΠΎ ΡΠΈΠ³Π½Π°Π»Ρ.Π¦Π΅Π»Ρ. ΠΠ·ΡΡΠ΅Π½ΠΈΠ΅ Π²Π»ΠΈΡΠ½ΠΈΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² Π½Π° ΠΈΡ
ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΡ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ Π·ΠΎΠ»ΠΎΡΠ° (AuNPs) ΠΈ Π²ΡΡΠ²Π»Π΅Π½ΠΈΠ΅ Π½Π΅ΠΊΠΎΡΠΎΡΡΡ
ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠ΅ΠΉ Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΡ AuNPs, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠ°Π·Π»ΠΈΡΠ½ΡΠΌΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Ρ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½Π° ΡΠΈΠΏΠ΅ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΠ°. ΠΠ΅ΡΠΎΠ΄Ρ. Π£ΡΠΎΠ²Π΅Π½Ρ ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ AuNPs ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π»ΠΈ ΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΠΎΠΉ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΠΈΠ΅ΠΉ. ΠΠ·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ ΡΡΠ°Π±ΠΈΠ»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠΈΡΡΠ°ΡΠΎΠΌ AuNPs, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Ρ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½Π° ΡΠΈΠΏΠ΅ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ°, ΠΈΠ·ΡΡΠ°Π»ΠΈ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΠΈΠΈ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΠ°. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΡΠΈ ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΡΠ°Π±ΠΈΠ»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠΈΡΡΠ°ΡΠΎΠΌ AuNPs Π½Π°ΡΠ°Π»ΡΠ½Π°Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΡ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² Π²Π»ΠΈΡΠ΅Ρ Π½Π° ΡΡΠΎΠ²Π΅Π½Ρ ΠΈΡ
ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ: Π΄ΠΎ 200 Π½Π Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΡ Π±ΡΠ»Π° Π±Π»ΠΈΠ·ΠΊΠ° ΠΊ Π»ΠΈΠ½Π΅ΠΉΠ½ΠΎΠΉ, Π° Π·Π°ΡΠ΅ΠΌ Π½Π°Π±Π»ΡΠ΄Π°Π»ΠΈ ΠΏΡΠΈΠ±Π»ΠΈΠΆΠ΅Π½ΠΈΠ΅ ΠΊ Π½Π°ΡΡΡΠ΅Π½ΠΈΡ (~26 ΠΌΠΎΠ»Π΅ΠΊΡΠ» Π½Π° ΠΎΠ΄Π½Ρ ΡΠ°ΡΡΠΈΡΡ ΠΈΠ»ΠΈ ~0,5 Γ 10ΒΉΒ³ ΠΌΠΎΠ»Π΅ΠΊΡΠ» ΡΠΌβ»Β²). Π ΠΎΡΠ»ΠΈΡΠΈΠ΅ ΠΎΡ ΡΡΠΎΠ³ΠΎ, ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ ΠΏΠΎΡΡΠ΅ΠΏΠ΅Π½Π½ΠΎ ΡΠΌΠ΅Π½ΡΡΠ°Π΅ΡΡΡ Π²ΠΌΠ΅ΡΡΠ΅ Ρ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ΠΌ Π½Π°ΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ². ΠΡΠΏΠΎΠ»ΡΠ·ΡΡ ΠΠΠ-ΡΠ΅Π½ΡΠΎΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΠ°, ΠΏΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΠΎΠ²Π°Π»ΠΈ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΡΡ Π³ΠΈΠ±ΡΠΈΠ΄ΠΈΠ·Π°ΡΠΈΡ ΠΌΠ΅ΠΆΠ΄Ρ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½Π° ΡΠ΅Π½ΡΠΎΡΠ½ΠΎΠΌ ΡΠΈΠΏΠ΅, ΠΈ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΌΠ΅Π½ΡΠ°ΡΠ½ΡΠΌΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠΉ Π΄Π»ΠΈΠ½Ρ (ΠΊΠΎΡΠΎΡΠΊΠΈΠ΅ T2-11m ΠΈ Π΄Π»ΠΈΠ½Π½ΡΠ΅ T2-18m), ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ AuNPs. Π ΡΠ»ΡΡΠ°Π΅ AuNPs, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΊΠΎΡΠΎΡΠΊΠΈΠΌΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, Π±ΡΠ»ΠΈ Π΄ΠΎΡΡΠΈΠ³Π½ΡΡΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΡΠ΅ ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΈ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠ°Ρ ΡΠ΅Π³Π΅Π½Π΅ΡΠ°ΡΠΈΡ Π±ΠΈΠΎΡΠ΅Π»Π΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ° ΠΠΠ-ΡΠ΅Π½ΡΠΎΡΠ°. ΠΡΠ²ΠΎΠ΄Ρ. Π£ΡΠΎΠ²Π΅Π½Ρ ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ AuNPs ΠΏΡΡ-ΠΌΠΎ ΠΏΡΠΎΠΏΠΎΡΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎ Π·Π°Π²ΠΈΡΠΈΡ ΠΎΡ ΠΈΡΡ
ΠΎΠ΄Π½ΠΎΠΉ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ², ΡΠΎΠ³Π΄Π° ΠΊΠ°ΠΊ ΠΈΡΡ
ΠΎΠ΄Π½Π°Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΡ ΠΎΠ»ΠΈ-Π³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² ΠΈ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΈΡ
ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ AuNPs Π΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΡΡΡ ΠΏΡΠΎΡΠΈΠ²ΠΎΠΏΠΎΠ»ΠΎΠΆΠ½ΡΡ ΡΠ²ΡΠ·Ρ. ΠΡΡΠ΅ΠΊΡΠΈΠ²Π½Π°Ρ Π³ΠΈΠ±ΡΠΈΠ΄ΠΈΠ·Π°ΡΠΈΡ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄ΠΎΠ² ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠΉ Π΄Π»ΠΈΠ½Ρ, ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΡ
Π½Π° AuNPs, Ρ ΠΎΠ»ΠΈΠ³ΠΎΠ½ΡΠΊΠ»Π΅ΠΎΡΠΈΠ΄Π°ΠΌΠΈ, ΠΈΠΌΠΌΠΎΠ±ΠΈΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΠ΅Π½ΡΠΎΡΠ°, Π° ΡΠ°ΠΊΠΆΠ΅ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΈΠ»ΠΈ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅-Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡ ΠΌΠ½ΠΎΠ³ΠΎΠΊΡΠ°ΡΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΡ ΡΠ΅Π½ΡΠΎΡ ΠΈ Π΄ΠΎΡΡΠΈΠ³Π°ΡΡ ΠΎΠ³ΡΠΎΠΌΠ½ΠΎΠ³ΠΎ ΡΡΠΈΠ»Π΅Π½ΠΈΡ ΡΠ΅Π½ΡΠΎΡΠ½ΠΎΠ³ΠΎ ΡΠΈΠ³Π½Π°Π»Π°