title: Supramolecular Gel-Templated In Situ Synthesis and Assembly of CdS Quantum Dots Gels.
abstract: Although many studies have attempted to develop strategies for spontaneously organizing nanoparticles (NPs) into three-dimensional (3D) geometries, it remains a fascinating challenge. In this study, a method for in situ synthesis and self-assembly of a CdS quantum dots (QDs) gel using a Cd supramolecular gel as a scaffold was demonstrated. During the QDs formation process, the Cd ions that constituted the Cd gels served as the precursors of the CdS QDs, and the oleic acid (OA) that ligated with the Cd in the supramolecular gels was capped on the surface of the CdS QDs in the form of carboxylate. The OA-stabilized CdS QDs were in situ synthesized in the entangled self-assembled fibrillar networks (SAFIN) of the Cd gels through reactions between the gelator and H2S. As a result, the QDs exactly replicated the framework of the SAFIN in the CdS QD gels instead of simply assembling along the SAFIN of the supramolecular gels. Moreover, the CdS QDs showed extraordinary sensitivity in the fluorescence detection of IO4-anions. The facile one-step method developed here is a new approach to assembling nanostructured materials into 3D architectures and has general implications for the design of low molecular mass gelators to bring desired functionality to the developed supramolecular gels.
authors.affiliation: Guangdong Provincial Key Laboratory of Nano-Micro Material Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.|Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
authors.forename: Lili
authors.initials: L
authors.lastname: Zhu
authors.affiliation: Guangdong Provincial Key Laboratory of Nano-Micro Material Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
authors.forename: Jie
authors.initials: J
authors.lastname: He
authors.affiliation: Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, Key Laboratory of High Performance Polymer Materials and Technology (Nanjing University), Ministry of Education, The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China.
authors.forename: Xiaoliang
authors.initials: X
authors.lastname: Wang
authors.affiliation: Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, Key Laboratory of High Performance Polymer Materials and Technology (Nanjing University), Ministry of Education, The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China.
authors.forename: Dawei
authors.initials: D
authors.lastname: Li
authors.affiliation: Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, Key Laboratory of High Performance Polymer Materials and Technology (Nanjing University), Ministry of Education, The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China.
authors.forename: Haibing
authors.initials: H
authors.lastname: He
authors.affiliation: Guangdong Provincial Key Laboratory of Nano-Micro Material Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
authors.forename: Lianbing
authors.initials: L
authors.lastname: Ren
authors.affiliation: Guangdong Provincial Key Laboratory of Nano-Micro Material Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
authors.forename: Biwang
authors.initials: B
authors.lastname: Jiang
authors.affiliation: Guangdong Provincial Key Laboratory of Nano-Micro Material Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China. ywang@pkusz.edu.cn.
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Guangdong Provincial Key Laboratory of Nano-Micro Material Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China. tengc@pkusz.edu.cn.
authors.forename: Chao
authors.initials: C
authors.lastname: Teng
authors.affiliation: Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, Key Laboratory of High Performance Polymer Materials and Technology (Nanjing University), Ministry of Education, The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China. xuegi@nju.edu.cn.
authors.forename: Gi
authors.initials: G
authors.lastname: Xue
authors.affiliation: Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China. taohc@pkusz.edu.cn.
authors.forename: Huchun
authors.initials: H
authors.lastname: Tao
keywords: Fluorescent probe; Quantum dots; Self-assembled fibrillar networks; Template synthesis