Journal
LANGMUIR
Volume 25, Issue 17, Pages 9633-9638Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la9009509
Keywords
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Funding
- Nano4Drugs [LSHC-CT-2005-019102]
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Diazonium salt chemistry and atom transfer radical polymerization (ATRP) were combined in view of preparing new bioactive hairy diamond nanoparticles containing, or potentially containing, nitrogen-vacancy (NV) fluorescent centers (fluorescent nanodiamonds, or fNDs). fNDs were modified by ATRP initiators using the electroless reduction of the diazonium salt BF4-,N-+(2)-C6H4-CH(CH3)-Br. The strongly bound aryl groups -C6H4-CH(CH3)-Br efficiently initiated the ATRP of tort-butyl methacrylate ((BMA) at the surface of the nanodiamonds, which resulted in obtaining ND-PtBMA hybrids. The grafted chain thickness, estimated from X-ray photoelectron spectroscopy (XPS), was found to increase linearly with respect to time before reaching a plateau value of ca. 2 nm. These nanoobjects were further hydrolyzed into ND-PMAA (where PMAA is the poly(methacrylic acid) graft) and further decorated by bovine serum albumin through the 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide/N-hydroxysuccinimide (EDC/NHS) coupling procedure.
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