PMID- 29442811 OWN - NLM STAT- MEDLINE DCOM- 20180730 LR - 20201209 IS - 1533-4880 (Print) IS - 1533-4880 (Linking) VI - 18 IP - 5 DP - 2018 May 1 TI - Immobilization of N-Halamine Based Polycation on Nanodiamonds for High Dispersity and Enhanced Biocidal Activity. PG - 3126-3133 LID - 10.1166/jnn.2018.14544 [doi] AB - Novel bactericidal materials, polycation-based N-halamine functionalized nanodiamonds (PCN-NDs), were fabricated by coating of nanodiamonds (NDs) with quaternarized N-halamine polymers via a facile approach. Chemical modification of the particles was confirmed by FTIR, XPS and TGA. The particle diameters and dispersity of the functionalized NDs were investigated by TEM and DLS measurements. It was found that ND tight core aggregates could be broken into tiny nanoparticles with 40-50 nm through functionalization procedure, which resulted in stable colloidal dispersion solution over one month. The antibacterial tests showed that the PCN-NDs exhibited enhanced antibacterial activity against Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) compared with their bulk counterparts. The minimum inhibitory concentration values of the as-prepared PCN-NDs are 62.5 mug/mL for both E. coli and S. aureus, even PCN-NDs eliminated nearly 100% of E. coil and S. aureus (107-108 CFU/mg nanoparticles) within 15 min. Furthermore, the as-prepared antimicrobial PCN-NDs exhibited good storage stability and regenerability. FAU - Peng, Xuefeng AU - Peng X AD - College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. FAU - Cao, Weiwei AU - Cao W AD - College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. FAU - Jin, Feng AU - Jin F AD - College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. FAU - Wang, Xi AU - Wang X AD - College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. FAU - Li, Qiang AU - Li Q AD - College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. FAU - Chen, Huinan AU - Chen H AD - College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. FAU - Xing, Xiaodong AU - Xing X AD - College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. LA - eng PT - Journal Article PL - United States TA - J Nanosci Nanotechnol JT - Journal of nanoscience and nanotechnology JID - 101088195 RN - 0 (Anti-Bacterial Agents) RN - 0 (Nanodiamonds) RN - 0 (Polyamines) RN - 0 (Polyelectrolytes) RN - 0 (polycations) SB - IM MH - Anti-Bacterial Agents/*pharmacology MH - Escherichia coli/drug effects MH - Microbial Sensitivity Tests MH - *Nanodiamonds MH - Polyamines/*pharmacology MH - Polyelectrolytes MH - Staphylococcus aureus/drug effects EDAT- 2018/02/15 06:00 MHDA- 2018/07/31 06:00 CRDT- 2018/02/15 06:00 PHST- 2018/02/15 06:00 [entrez] PHST- 2018/02/15 06:00 [pubmed] PHST- 2018/07/31 06:00 [medline] AID - 10.1166/jnn.2018.14544 [doi] PST - ppublish SO - J Nanosci Nanotechnol. 2018 May 1;18(5):3126-3133. doi: 10.1166/jnn.2018.14544.