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| 1 | Synthesis, properties, and applications of graphene oxide/reduced graphene oxide and their nanocomposites显示文摘Thanks to their remarkable mechanical, electrical, thermal, and barrier properties, graphene-based nanocomposites have been a hot area of research in the past decade. Because of their simple top-down synthesis, graphene oxide (GO) and reduced graphene oxide (rGO) have opened new possibilities for gas barrier, membrane separation, and stimuli-response characteristics in nanocomposites. Herein, we review the synthesis techniques most commonly used to produce these graphene derivatives, discuss how synthesis affects their key material properties, and highlight some examples of nanocomposites with unique and impressive properties. We specifically highlight their performances in separation applications, stimuli-responsive materials, anti-corrosion coatings, and energy storage. Finally, we discuss the outlook and remaining challenges in the field of practical industrial-scale production and use of graphene-derivative-based polymer nanocomposites. | Andrew T. Smith Anna Marie LaChance Songshan Zeng Bin Liu Luyi Sun | 2019 | Nano Materials Science2019，1，1： | 33 |
| 2 | Gram-scale synthesis of all-inorganic perovskite quantum dots with high Mn substitution ratio and enhanced dual-color emission显示文摘Mn-doped all-inorganic perovskite quantum dots (QDs) provide prominent applications in the fields of low-cost light source or display,because of their remarkable properties including dual-color emission and reduced lead content,as well as high photoluminescence quantum yields (PLQYs) and high stability.However,the existing synthesis approaches usually require hash conditions,such as high temperature and nitrogen protection,which is a major hurdler for the practical manufacturing.In addition,the significantly high Mn substitution ratio in CsPbX3 QDs is still challenging.The real dual-color emission with two strong emission peaks in the Mn-doped all-inorganic perovskite QDs has attracted great interest.Here we present a gram-scale approach to synthesize both CsPbxMn1-xCI3 and CsPb1-xMnxClyBr3-y QDs at 100 ℃ in the air with high Mn substitution ratio,up to 55.64% atomically.The as-prepared CsPb1-xMnxClyBr3-y QDs exhibit high PLQYs of 62.41% and dual-color emission with two strong emission peaks around at 400-450 nm and 600 nm,respectively.The enhanced peak at 400-450 nm is a result of the hybrid halides in CsPbBrxCl3-x host.Furthermore,the unique advantage of the optical emission and high PLQYs properties of the CsPbxMn1-xCl3 QDs has been demonstrated as invisible ink for encryption applications and polymer composites.Our gram-scale synthesis approach for Mn-doped all-inorganic perovskite QDs may boost the future research and practical applications of QDs-based white LED,spintronics,and molecular barcoding. | Lvming Dong Zhuo Chen Lei Ye Yan Yu Jianbing Zhang Huan Liu Jianfeng Zang | 2019 | Nano Research2019，12，7： | 6 |
| 3 | Precursor-dependent structural diversity in luminescent carbonized polymer dots(CPDs):the nomenclature显示文摘Carbon dots(CDs)have received immense attention in the last decade because they are easy-to-prepare,nontoxic,and tailorable carbon-based fluorescent nanomaterials.CDs can be categorized into three subgroups based on their morphology and chemical structure:graphene quantum dots(GQDs);carbon quantum dots(CQDs),and carbonized polymer dots(CPDs).The detailed structures of the materials can vary significantly,even within the same category.This property is particularly predominant in chemically synthesized CPDs,as their formation proceeds via the polymerization-carbonization of molecules or polymer precursors.Abundant precursors endow CPDs with versatile structures and properties.A wide variety of carbon nanomaterials can be grouped under the category of CPDs because of their observed diversity.It is important to understand the precursor-dependent structural diversity observed in CPDs.Appropriate nomenclature for all classes and types of CPDs is proposed for the better utilization of these emerging materials。 | Qingsen Zeng Tanglue Feng Songyuan Tao Shoujun Zhu Bai Yang | 2021 | Light(Science & Applications)2021，10，8： | 4 |
| 4 | Molecularly Imprinted Polymer Based on GO-QDs as Enhanced Fluorescent Nanoscale Device for Specific Recognition of Target Protein显示文摘In this work the enhanced molecularly imprinted optosensing material based on graphene oxide-quantum dots ( GO- QDs) was synthesized for highly selective and sensitive specific recognition of the target protein, bovine serum albumin (BSA). Here, GO was introduced to enhance the efficiency of mass-transfer in recognition of target protein. Molecularly imprinted polymer coated GO-QDs using BSA as template (BMIP-coated GO-QDs ) exhibited a fast mass-transfer speed, which could be ascribed to the high volume of efficient surface area and high target recognition efficiency of the synthesized nanoscale device. Under optimal conditions, it was found that the BSA as target protein could remarkably quench the relative fluorescence intensity of BMIP- coated GO-QDs linearly in a concentration-dependent manner that was best described by a Stern-Volmer equation. The Ksv (Stern- Volmer constant) for template BSA was much higher than bovine hemoglobin (BHb) and lysozyme (Lyz), implying a highly selective recognition ability of the BMIP-coated GO-QDs to BSA. This enhanced fluorescent nanoscale device may provide opportunities to develop a system that is efficient and effective and has potential in the design of highly effective fluorescent receptor for recognition of target protein in Droteomics studies. | DING Zhao-qiang GONG Xiao TAO Lei QUAN Jing NIE Hua-li ZHU Li-min | 2014 | Journal of Donghua University(English Edition)2014，31，5： | 1 |
| 5 | In situ formation of fluorescent silicon-containing polymer dots for alkaline phosphatase activity detection and immunoassay显示文摘The discovery and application of analyte-triggered fluorophore generation or fluorogenic reaction are significant and beneficial to the development of novel fluorescence(FL) analysis method. In this study, for the first time, we have reported a fluorogenic reaction to prepare fluorescent silicon-containing polymer dots(Si-PDs) by simply mixing N-[3-(trimethoxysilyl)propyl]ethylenediamine(DAMO) and hydroquinone(HQ) in aqueous solution at ambient temperature. Inspired by the alkaline phosphatase(ALP)-catalyzed hydrolysis of the substrate sodium 4-hydroxyphenyl phosphate(4-HPP) into HQ and the resultant HQcontrolled intense green Si-PDs generation, we have established a straightforward ALP activity assay by innovatively employing commercially available 4-HPP as the substrate. More significantly, the specific preparation method, clear formation mechanism and excellent performance enable the Si-PDs as well as its generation process to develop facile and attractive FL immunoassay.With the help of the universal ALP-based enzyme-linked immunosorbent assay(ELISA) platform and corresponding antibody, a convenient and conceptual ALP-based fluorescent ELISA has been constructed and applied in sensing cardiac troponin Ⅰ(cTnI),a well-known biomarker of acute myocardial infarction. Our research via in situ formation of fluorescent nanomaterials has great potential application in ALP activity assay, inhibitor screening, and disease diagnosis. | Guoyong Liu Jiahui Zhao Mengxia Yan Shuyun Zhu Wenchao Dou Jian Sun Xiurong Yang | 2020 | Science China Chemistry2020，63，4： | 1 |
| 6 | High pressure and high temperature induced polymerization of C60 quantum dots显示文摘We synthesized C60 quantum dots(QDs) with a uniform size by a modified ultrasonic process and studied its polymerization under high pressure and high temperature(HPHT).Raman spectra showed that a phase assemblage of a dimer(D) phase(62 vol%) and a one-dimensional chain orthorhombic(O) phase(38 vol%) was obtained at 1.5 GPa and 300℃.At 2.0 GPa and 430℃,the proportion of the O phase increased to 46 vol%,while the corresponding D phase decreased to 54 vol%.Compared with bulk and nanosized C60,C60 QDs cannot easily form a high-dimensional polymeric structure.This fact is probably caused by the small particle size,orientation of the disordered structure of C60 QDs,and the barrier of oxide function groups between C60 molecules.Our studies enhance the understanding of the polymerization behavior of low-dimension C60 nanomaterials under HPHT conditions. | 阮世豪 韩春淼 李福禄 李冰 刘冰冰 | 2020 | Chinese Physics B2020，29，2： | 0 |
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