Synthesis and characterization of poly(N-vinycaprolactam)-grafted gold nanoparticles by free radical polymerization for using as chemotherapeutic delivery system

Universal Method for Label-Free Detection of Pathogens and Biomolecules by Surface-Enhanced Raman Spectroscopy Based on Gold Nanoparticles

“…In Figure S4a, the substances in 1263 cm –1 (CH 2 methylene wagging) and 2932 cm –1 (C–H stretching vibrations) were shared by Au@CNPs and Au@C-SH. Additionally, bands of C–S bond stretching vibration were observed at 673 cm –1 in the spectrogram of Au@C-SH . These results indicated that the functionalization of −SH on Au@CNPs was successful.…”

“…Additionally, bands of C−S bond stretching vibration were observed at 673 cm −1 in the spectrogram of Au@C-SH. 34 These results indicated that the functionalization of −SH on Au@CNPs was successful. Furthermore, from Figure S2, it can be clearly seen that the zeta potential of Au@C-SH (−32.5 ± 0.005 mV) was reduced compared with that of Au@CNPs (−37.1 ± 0.007 mV), but the DLS data of the two were basically unchanged (d = 23.58 nm).…”

A colorimetric detection of Hg2+ based on gold nanoparticles synthesized oxidized N-methylpyrrolidone as a reducing agent

“…According to previous literature, the difference between the peaks of Au4f 7/2 and Au4f 5/2 (about 3.7 eV) is caused by the presence of Au 0 , and in AuNCs, Au 0 occurs in the metal cores protected by surface-capped ligands and Au + [32,33].…”

A novel electrochemical aptasensor based on polyaniline and gold nanoparticles for ultrasensitive and selective detection of ascorbic acid

“…38,59 After aptamer immobilization, two new peaks were visible at binding energies of approximately 161.8 and 162.5 eV, associated with the presence of Au–S bond in agreement with Au 4f of Apt/AuNPs/PANI/GCE studies. 60 Moreover, the P 2p spectra of bare GCE, PANI/GCE, and AuNPs/PANI/GCE revealed no peaks, while the Apt/AuNPs/PANI/GCE illustrated a phosphate peak at 133.65 eV due to the presence of aptamer molecules (Fig. 3F).…”