Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Fluorescence enhancement of monodisperse carbon nanodots treated with aqueous ammonia and hydrogen peroxide. / Rabchinskii, Maxim; Mironov, Leonid; Sgibnev, Yevgeniy; Kolesnikov, Ilya ; Kurdyukov, Dmitry; Eurov, Daniil; Kirilenko, Demid ; Shvidchenko, Aleksandr; Stolyarova, Dina ; Smirnov , Dmitry ; Golubev, Valery .
в: Nanotechnology, Том 30, № 47, 475601, 2019.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Fluorescence enhancement of monodisperse carbon nanodots treated with aqueous ammonia and hydrogen peroxide
AU - Rabchinskii, Maxim
AU - Mironov, Leonid
AU - Sgibnev, Yevgeniy
AU - Kolesnikov, Ilya
AU - Kurdyukov, Dmitry
AU - Eurov, Daniil
AU - Kirilenko, Demid
AU - Shvidchenko, Aleksandr
AU - Stolyarova, Dina
AU - Smirnov , Dmitry
AU - Golubev, Valery
PY - 2019
Y1 - 2019
N2 - The treatment of monodisperse carbon nanodots (MCNDs) with a combination of aqueous ammonia and hydrogen peroxide is found to result in a prominent enhancement of their fluorescence efficiency. Depending on the hydrogen peroxide concentration, an increase of the MCNDs quantum yield of up to seven-fold has been achieved. Considering the absence of prominent changes in fluorescence lifetime and fluorescence spectra upon the treatment it is suggested that the observed rise of fluorescence efficiency originates from additional formation of new isolated sp 2 domains surrounded by defect sites. The structural modification of MCNDs induced by their treatment with combination of aqueous ammonia and hydrogen peroxide is indicated by both transmission electron microscopy images and infrared spectra. The applied method has insignificant effect on the aggregation properties and size distribution of the studied MCNDs. Taking into account the proposed mechanism, the applied treatment procedure can serve as a basis for a facile approach for modification of emissive properties of various nanocarbon structures.
AB - The treatment of monodisperse carbon nanodots (MCNDs) with a combination of aqueous ammonia and hydrogen peroxide is found to result in a prominent enhancement of their fluorescence efficiency. Depending on the hydrogen peroxide concentration, an increase of the MCNDs quantum yield of up to seven-fold has been achieved. Considering the absence of prominent changes in fluorescence lifetime and fluorescence spectra upon the treatment it is suggested that the observed rise of fluorescence efficiency originates from additional formation of new isolated sp 2 domains surrounded by defect sites. The structural modification of MCNDs induced by their treatment with combination of aqueous ammonia and hydrogen peroxide is indicated by both transmission electron microscopy images and infrared spectra. The applied method has insignificant effect on the aggregation properties and size distribution of the studied MCNDs. Taking into account the proposed mechanism, the applied treatment procedure can serve as a basis for a facile approach for modification of emissive properties of various nanocarbon structures.
KW - fluorescence enhancement
KW - monodisperse carbon nanodots
KW - nanoparticles fluorescence
UR - http://www.scopus.com/inward/record.url?scp=85073833685&partnerID=8YFLogxK
U2 - 10.1088/1361-6528/ab3cdf
DO - 10.1088/1361-6528/ab3cdf
M3 - Article
VL - 30
JO - Nanotechnology
JF - Nanotechnology
SN - 0957-4484
IS - 47
M1 - 475601
ER -
ID: 49772540