title: Single cytidine units-templated syntheses of multi-colored water-soluble Au nanoclusters.
abstract: Ultra-small metallic nanoparticles, or so-called "nanoclusters" (NCs), have attracted considerable interest due to their unique optical properties that are different from both larger nanoparticles and single atoms. To prepare high-quality NCs, the stabilizing agent plays an essential role. In this work, we have revealed and validated that cytidine and its nucleotides (cytidine 5'-monophosphate or cytidine 5'-triphosphate) can act as efficient stabilizers for syntheses of multicolored Au NCs. Interestingly, Au NCs with blue, green and yellow fluorescence emissions are simultaneously obtained using various pH environments or reaction times. The transmission electron microscopy verifies that the size of Au NCs ranges from 1.5 to 3 nm. The X-ray photoelectron spectroscopy confirms that only Au (0) species are present in NCs. Generally, the facile preparation of multicolored Au NCs that are stabilized by cytidine units provides access to promising candidates for multiple biolabeling applications.
authors: State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, PR China. xuewang@seu.edu.cn.
authors: Hui
authors: H
authors: Jiang
authors: Yuanyuan
authors: Y
authors: Zhang
authors: Xuemei
authors: X
authors: Wang
mesh_terms: D003116:Color; D003562:Cytidine / Q000737:chemistry*; D005079:Excipients / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D054802:Molecular Imprinting / Q000379:methods; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D012995:Solubility; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
chemical_list: D005079:Excipients; D014867:Water; D003562:Cytidine; D006046:Gold