Počet záznamů: 1
Towards site-specific emission enhancement of gold nanoclusters using plasmonic systems: advantages and limitations
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SYSNO ASEP 0568465 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Towards site-specific emission enhancement of gold nanoclusters using plasmonic systems: advantages and limitations Tvůrce(i) Pavelka, O. (CZ)
Dyakov, S. (RU)
Kvaková, Klaudia (UOCHB-X) ORCID
Vesely, J. (CZ)
Cígler, Petr (UOCHB-X) RID, ORCID
Valenta, J. (CZ)Zdroj.dok. Nanoscale. - : Royal Society of Chemistry - ISSN 2040-3364
Roč. 15, č. 7 (2023), s. 3351-3365Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova turn-on ; energy transfer ; fluorescence Obor OECD Nano-materials (production and properties) CEP GA18-12533S GA ČR - Grantová agentura ČR EF16_026/0008382 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UOCHB-X - RVO:61388963 UT WOS 000920207900001 EID SCOPUS 85147351053 DOI 10.1039/d2nr06680g Anotace Photoluminescent gold nanoclusters are widely seen as a promising candidate for applications in biosensing and bioimaging. Although they have many of the required properties, such as biocompatibility and photostability, the luminescence of near infrared emitting gold nanoclusters is still relatively weak compared to the best available fluorophores. This study contributes to the ongoing debate on the possibilities and limitations of improving the performance of gold nanoclusters by combining them with plasmonic nanostructures. We focus on a detailed description of the emission enhancement and compare it with the excitation enhancement obtained in recent works. We prepared a well-defined series of gold nanoclusters attached to gold nanorods whose plasmonic band is tuned to the emission band of gold nanoclusters. In the resultant single-element hybrid nanostructure, the gold nanorods control the luminescence of gold nanoclusters in terms of its spectral position, polarization and lifetime. We identified a range of parameters which determine the mutual interaction of both particles including the inter-particle distance, plasmon–emission spectral overlap, dimension of gold nanorods and even the specific position of gold nanoclusters attached on their surface. We critically assess the practical and theoretical photoluminescence enhancements achievable using the above strategy. Although the emission enhancement was generally low, the observations and methodology presented in this study can provide a valuable insight into the plasmonic enhancement in general and into the photophysics of gold nanoclusters. We believe that our approach can be largely generalized for other relevant studies on plasmon enhanced luminescence. Pracoviště Ústav organické chemie a biochemie Kontakt asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Jana Procházková, Tel.: 220 183 418 Rok sběru 2024 Elektronická adresa https://doi.org/10.1039/D2NR06680G
Počet záznamů: 1