Journal
DALTON TRANSACTIONS
Volume 41, Issue 18, Pages 5472-5475Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2dt30388d
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Funding
- Fundacao para a Ciencia e Tecnologia, Portugal [PTDC/QUI/70063/2006, SFRH/BD/63994/2009]
- Rede Nacional de RMN [REDE/1517/RMN/2005]
- Swiss National Science Foundation
- Fundação para a Ciência e a Tecnologia [SFRH/BD/63994/2009, PTDC/QUI/70063/2006] Funding Source: FCT
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Gold nanoparticles functionalized with Gd3+ chelates displaying fast water exchange, superb pH stability and inertness towards transmetalation with Zn2+ have been prepared and characterized as a new high relaxivity (29 mM(-1) s(-1), 30 MHz, 25 degrees C) contrast agent potentially safe for in vivo MRI applications. The Lipari-Szabo treatment for internal rotation was used to evaluate the effect of linker flexibility on the relaxivity of the gold nanoparticles. The effect of fast water exchange on the relaxivity of gold nanoparticles functionalized with Gd3+ chelates is also addressed in this communication.
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