1
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Heidaripour A. Substrate effect on the electrochemical capacity pattern (ECP) of PbS. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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2
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Huang Y, Cohen TA, Sperry BM, Larson H, Nguyen HA, Homer MK, Dou FY, Jacoby LM, Cossairt BM, Gamelin DR, Luscombe CK. Organic building blocks at inorganic nanomaterial interfaces. MATERIALS HORIZONS 2022; 9:61-87. [PMID: 34851347 DOI: 10.1039/d1mh01294k] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This tutorial review presents our perspective on designing organic molecules for the functionalization of inorganic nanomaterial surfaces, through the model of an "anchor-functionality" paradigm. This "anchor-functionality" paradigm is a streamlined design strategy developed from a comprehensive range of materials (e.g., lead halide perovskites, II-VI semiconductors, III-V semiconductors, metal oxides, diamonds, carbon dots, silicon, etc.) and applications (e.g., light-emitting diodes, photovoltaics, lasers, photonic cavities, photocatalysis, fluorescence imaging, photo dynamic therapy, drug delivery, etc.). The structure of this organic interface modifier comprises two key components: anchor groups binding to inorganic surfaces and functional groups that optimize their performance in specific applications. To help readers better understand and utilize this approach, the roles of different anchor groups and different functional groups are discussed and explained through their interactions with inorganic materials and external environments.
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Affiliation(s)
- Yunping Huang
- Department of Materials Science & Engineering, University of Washington, Seattle, WA 98195, USA.
| | - Theodore A Cohen
- Molecular Engineering & Sciences Institute, University of Washington, Seattle, WA 98195, USA
| | - Breena M Sperry
- Department of Materials Science & Engineering, University of Washington, Seattle, WA 98195, USA.
| | - Helen Larson
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Hao A Nguyen
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Micaela K Homer
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Florence Y Dou
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Laura M Jacoby
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Brandi M Cossairt
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Daniel R Gamelin
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Christine K Luscombe
- Department of Materials Science & Engineering, University of Washington, Seattle, WA 98195, USA.
- Molecular Engineering & Sciences Institute, University of Washington, Seattle, WA 98195, USA
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
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3
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Lim MJ, Shahri NNM, Taha H, Mahadi AH, Kusrini E, Lim JW, Usman A. Biocompatible chitin-encapsulated CdS quantum dots: Fabrication and antibacterial screening. Carbohydr Polym 2021; 260:117806. [PMID: 33712152 DOI: 10.1016/j.carbpol.2021.117806] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/27/2021] [Accepted: 02/08/2021] [Indexed: 10/22/2022]
Abstract
Chitin-encapsulated cadmium sulfide quantum dots (CdS@CTN QDs) were successfully synthesized from chitin and Cd(NO3)2 precursor using the colloidal chemistry method, toward the development of biocompatible and biodegradable QDs for biomedical applications. CdS@CTN QDs exhibited the nanocrystalline cubic CdS encapsulated by α-chitin. The average particle size of CdS@CTN QDs was estimated using empirical Henglein model to be 3.9 nm, while their crystallite size was predicted using Scherrer equation to be 4.3 nm, slightly larger compared to 3-mercaptopropionic acid-capped CdS QDs (3.2 and 3.6 nm, respectively). The mechanism of formation was interpreted based on the spectroscopic data and X-ray crystal structures of CdS@CTN QDs fabricated at different pH values and mass ratios of chitin to Cd(NO3)2 precursor. As an important step to explore potential biomolecular and biological applications of CdS@CTN QDs, their antibacterial activities were tested against four different bacterial strains; i.e. Escherichia coli, Bacillus subtillus, Staphylococcus aureus and Pseudomonas aeruginosa.
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Affiliation(s)
- Matin Jasli Lim
- Department of Chemistry, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Nurulizzatul Ningsheh M Shahri
- Department of Chemistry, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Hussein Taha
- Environmental and Life Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Abdul Hanif Mahadi
- Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Eny Kusrini
- Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI-Depok, 16424, Indonesia
| | - Jun Wei Lim
- Department of Fundamental and Applied Sciences, HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Anwar Usman
- Department of Chemistry, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam.
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4
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Chen X, Yang Z, Feng S, Golbek TW, Xu W, Butt HJ, Weidner T, Xu Z, Hao J, Wang Z. How Universal Is the Wetting Aging in 2D Materials. NANO LETTERS 2020; 20:5670-5677. [PMID: 32579374 DOI: 10.1021/acs.nanolett.0c00855] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Previous studies indicate that 2D materials such as graphene, WS2, and MoS2 deposited on oxidized silicon substrate are susceptible to aging due to the adsorption of airborne contamination. As a result, their surfaces become more hydrophobic. However, it is not clear how ubiquitous such a hydrophobization is, and the interplay between the specific adsorbed species and resultant wetting aging remains elusive. Here, we report a pronounced and general hydrophilic-to-hydrophobic wetting aging on 2D InSe films, which is independent of the substrates to synthesize these films (silicon, glass, nickel, copper, aluminum oxide), though the extent of wetting aging is sensitive to the layer of films. Our findings are ascribed to the occurrence and enrichment of airborne contamination that contains alkyl chains. Our results also suggest that the wetting aging effect might be universal to a wide range of 2D materials.
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Affiliation(s)
- Xuan Chen
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong 999077, China
| | - Zhibin Yang
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong 999077, China
| | - Shizhe Feng
- Applied Mechanics Laboratory, Department of Engineering Mechanics and Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
| | | | - Wanghuai Xu
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong 999077, China
| | | | - Tobias Weidner
- Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
| | - Zhiping Xu
- Applied Mechanics Laboratory, Department of Engineering Mechanics and Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
| | - Jianhua Hao
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong 999077, China
| | - Zuankai Wang
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong 999077, China
- Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
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5
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Yeo SJ, Kang H, Dao TD, Cuc BT, Nguyen ATV, Tien TTT, Hang NLK, Phuong HVM, Thanh LT, Mai LQ, Rah Y, Yu K, Shin HJ, Chong CK, Choi HS, Park H. Development of a smartphone-based rapid dual fluorescent diagnostic system for the simultaneous detection of influenza A and H5 subtype in avian influenza A-infected patients. Theranostics 2018; 8:6132-6148. [PMID: 30613288 PMCID: PMC6299699 DOI: 10.7150/thno.28027] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 10/30/2018] [Indexed: 01/04/2023] Open
Abstract
Accurate and rapid diagnosis of highly pathogenic avian influenza A H5N1 is of critical importance for the effective clinical management of patients. Here, we developed a rapid and simultaneous detection toolkit for influenza A H5 subtype viruses in human samples based on a bioconjugate of quantum dots (QDs) assembly and a smartphone-based rapid dual fluorescent diagnostic system (SRDFDS). Methods: Two types of QDs were assembled on a latex bead to enhance the detection sensitivity and specificity of influenza A infection (QD580) and H5 subtype (QD650). The dual signals of influenza A and H5 subtype of H5N1-infected patients were detected simultaneously and quantified separately by SRDFDS equipped with two emission filters. Results: Our results showed a high sensitivity of 92.86% (13/14) and 78.57% (11/14), and a specificity of 100% (38/38, P < 0.0001) and 97.37% (37/38) for influenza A and H5 subtype detection, respectively. Conclusion: Therefore, our multiplex QD bioconjugates and SRDFDS-based influenza virus detection toolkit potentially provide accurate and meaningful diagnosis information with improved detection accuracies and sensitivities for H5N1 patients.
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Affiliation(s)
- Seon-Ju Yeo
- Zoonosis Research Center, Department of Infection Biology, School of Medicine, Wonkwang University, Iksan, 570-749, Republic of Korea
| | - Homan Kang
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Tung Duy Dao
- Zoonosis Research Center, Department of Infection Biology, School of Medicine, Wonkwang University, Iksan, 570-749, Republic of Korea
| | - Bui Thi Cuc
- Zoonosis Research Center, Department of Infection Biology, School of Medicine, Wonkwang University, Iksan, 570-749, Republic of Korea
| | - Anh Thi Viet Nguyen
- Zoonosis Research Center, Department of Infection Biology, School of Medicine, Wonkwang University, Iksan, 570-749, Republic of Korea
| | - Trinh Thi Thuy Tien
- Zoonosis Research Center, Department of Infection Biology, School of Medicine, Wonkwang University, Iksan, 570-749, Republic of Korea
| | - Nguyen Le Khanh Hang
- National Institute of Hygiene and Epidemiology, No 1- Yersin street, Hanoi, Vietnam
| | - Hoang Vu Mai Phuong
- National Institute of Hygiene and Epidemiology, No 1- Yersin street, Hanoi, Vietnam
| | - Le Thi Thanh
- National Institute of Hygiene and Epidemiology, No 1- Yersin street, Hanoi, Vietnam
| | - Le Quynh Mai
- National Institute of Hygiene and Epidemiology, No 1- Yersin street, Hanoi, Vietnam
| | - Yoonhyuk Rah
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-338, Republic of Korea
| | - Kyoungsik Yu
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-338, Republic of Korea
| | - Ho-Joon Shin
- Department of Microbiology, Ajou University School of Medicine, and Department of Biomedical Science, Ajou University Graduate School of Medicine, Suwon 16499, Republic of Korea
| | - Chom-Kyu Chong
- GenBody Inc., 3-18, Eopseong 2-gil, Seobuk-gu, Cheonan, 31077, Republic of Korea
| | - Hak Soo Choi
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Hyun Park
- Zoonosis Research Center, Department of Infection Biology, School of Medicine, Wonkwang University, Iksan, 570-749, Republic of Korea
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6
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Deng T, Wang J, Li Y, Han Z, Peng Y, Zhang J, Gao Z, Gu Y, Deng D. Quantum Dots-Based Multifunctional Nano-Prodrug Fabricated by Ingenious Self-Assembly Strategies for Tumor Theranostic. ACS APPLIED MATERIALS & INTERFACES 2018; 10:27657-27668. [PMID: 30016068 DOI: 10.1021/acsami.8b08512] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The rapid developments of quantum dots (QDs)-based nanoagents for imaging tumor and tracking drug delivery have been proven to be reliable nanodiagnostic techniques. Although abundant types of QD nanoagents have been developed for fighting against cancer, it still is a challenge to control their quality and achieve prefect repetition due to the complicated synthetic steps. The precise intermolecular self-assembly (SA) may afford a facile and low-cost strategy for this challenge. Herein, a pH and H2O2 dual-sensitive Sb-cyclodextrin (CD)-doxorubicin (DOX) molecule was designed to construct a QD-based theranostic prodrug (named as Sb-CD-DOX-ZAISe/ZnS) via host-guest strategy (1st SA strategy), in which QDs water-transfer and drug-uploading were integrated well. That is, the nano-prodrug (NPD) inherited highly luminescent properties from "host" QDs for bioimaging, as well as environment sensitivities from "guest" Sb-CD-DOX for drug release. Experimental results indicate that the Sb-CD-DOX-ZAISe/ZnS exhibited effectively passive tumor-targeting and could provide clear imaging for malignant tumors in metaphase or advanced stages; meanwhile, after coating with folic acid (FA) through electric attraction (2nd SA strategy), the final Sb-CD-DOX-ZAISe/ZnS@FA NPD showed expected pH-controlled negative-to-positive charge reversal ability and a better curative effect compared with free DOX. Hence, fabricating nanocomposites by highly efficient self-assembly strategies is favorable toward inorganic nanoparticles-based prodrug delivery system for tumor-targeting theranostic.
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Affiliation(s)
| | | | | | | | | | | | - Zhen Gao
- College of Biotechnology and Pharmaceutical Engineering , Nanjing Tech University , Nanjing 211816 , China
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7
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Abstract
The principles, strengths and limitations of several nonlinear optical (NLO) methods for characterizing biological systems are reviewed. NLO methods encompass a wide range of approaches that can be used for real-time, in-situ characterization of biological systems, typically in a label-free mode. Multiphoton excitation fluorescence (MPEF) is widely used for high-quality imaging based on electronic transitions, but lacks interface specificity. Second harmonic generation (SHG) is a parametric process that has all the virtues of the two-photon version of MPEF, yielding a signal at twice the frequency of the excitation light, which provides interface specificity. Both SHG and MPEF can provide images with high structural contrast, but they typically lack molecular or chemical specificity. Other NLO methods such as coherent anti-Stokes Raman scattering (CARS) and stimulated Raman scattering (SRS) can provide high-sensitivity imaging with chemical information since Raman active vibrations are probed. However, CARS and SRS lack interface and surface specificity. A NLO method that provides both interface/surface specificity as well as molecular specificity is vibrational sum frequency generation (SFG) spectroscopy. Vibration modes that are both Raman and IR active are probed in the SFG process, providing the molecular specificity. SFG, like SHG, is a parametric process, which provides the interface and surface specificity. SFG is typically done in the reflection mode from planar samples. This has yielded rich and detailed information about the molecular structure of biomaterial interfaces and biomolecules interacting with their surfaces. However, 2-D systems have limitations for understanding the interactions of biomolecules and interfaces in the 3-D biological environment. The recent advances made in instrumentation and analysis methods for sum frequency scattering (SFS) now present the opportunity for SFS to be used to directly study biological solutions. By detecting the scattering at angles away from the phase-matched direction even centrosymmetric structures that are isotropic (e.g., spherical nanoparticles functionalized with self-assembled monolayers or biomolecules) can be probed. Often a combination of multiple NLO methods or a combination of a NLO method with other spectroscopic methods is required to obtain a full understanding of the molecular structure and surface chemistry of biomaterials and the biomolecules that interact with them. Using the right combination methods provides a powerful approach for characterizing biological materials.
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Mansur AAP, Mansur HS, Caires AJ, Mansur RL, Oliveira LC. Composition-Tunable Optical Properties of Zn x Cd (1 - x)S Quantum Dot-Carboxymethylcellulose Conjugates: Towards One-Pot Green Synthesis of Multifunctional Nanoplatforms for Biomedical and Environmental Applications. NANOSCALE RESEARCH LETTERS 2017; 12:443. [PMID: 28683540 PMCID: PMC5498436 DOI: 10.1186/s11671-017-2212-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 06/25/2017] [Indexed: 05/16/2023]
Abstract
Quantum dots (QDs) are colloidal semiconductor nanocrystals with unique properties that can be engineered by controlling the nanoparticle size and chemical composition by doping and alloying strategies. However, due to their potential toxicity, augmenting their biocompatibility is yet a challenge for expanding to several biomedical and environmentally friendly applications. Thus, the main goal of this study was to develop composition-tunable and biocompatible Zn x Cd1 - x S QDs using carboxymethylcellulose polysaccharide as direct capping ligand via green colloidal aqueous route at neutral pH and at room temperature for potential biomedical and environmental applications. The ternary alloyed QDs were extensively characterized using UV-vis spectroscopy, photoluminescence spectroscopy (PL), transmission electron microscopy (TEM), X-ray diffraction (XRD), electron energy loss spectroscopy (EELS), and X-ray photoelectrons spectroscopy (XPS). The results indicated that Zn x Cd(1 - x)S QDs were surface stabilized by carboxymethylcellulose biopolymer with spherical morphology for all composition of alloys and narrow sizes distributions ranging from 4 to 5 nm. The XRD results indicated that monophasic ternary alloyed Zn x Cd1 - x S nanocrystals were produced with homogenous composition of the core as evidenced by EELS and XPS analyses. In addition, the absorption and emission optical properties of Zn x Cd1 - x S QDs were red shifted with increasing the amount of Cd2+ in the alloyed nanocrystals, which have also increased the quantum yield compared to pure CdS and ZnS nanoparticles. These properties of alloyed nanomaterials were interpreted based on empirical model of Vegard's law and chemical bond model (CBM). As a proof of concept, these alloyed-QD conjugates were tested for biomedical and environmental applications. The results demonstrated that they were non-toxic and effective fluorophores for bioimaging live HEK293T cells (human embryonic kidney cells) using confocal laser scanning fluorescence microscopy. Moreover, these conjugates presented photocatalytic activity for photodegradation of methylene blue used as model organic industrial pollutant in water. Hence, composition-tunable optical properties of ternary Zn x Cd1 - x S (x = 0-1) fluorescent alloyed QDs was achieved using a facile eco-friendly aqueous processing route, which can offer promising alternatives for developing innovative nanomaterials for applications in nanomedicine and environmental science and technology.
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Affiliation(s)
- Alexandra A P Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil
| | - Herman S Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil.
- Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Escola de Engenharia, Bloco 2 - Sala 2233, Belo Horizonte, MG, 31.270-901, Brazil.
| | - Anderson J Caires
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil
| | - Rafael L Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil
| | - Luiz C Oliveira
- Department of Chemistry, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil
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Deng T, Peng Y, Zhang R, Wang J, Zhang J, Gu Y, Huang D, Deng D. Water-Solubilizing Hydrophobic ZnAgInSe/ZnS QDs with Tumor-Targeted cRGD-Sulfobetaine-PIMA-Histamine Ligands via a Self-Assembly Strategy for Bioimaging. ACS APPLIED MATERIALS & INTERFACES 2017; 9:11405-11414. [PMID: 28293947 DOI: 10.1021/acsami.6b16639] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Exploring the organic-to-aqueous phase transfer of quantum dots (QDs) is significant for achieving their versatile applications in biomedical fields. In this thematic issue, surface modification, size control, and biocompatibility of QDs and QDs-based nanocomposites are core problems. Herein, the new highly fluorescent tumor-targeted QDs-clusters consisting of ZnAgInSe/ZnS (ZAISe/ZnS) QDs and sulfobetaine-PIMA-histamine (SPH) polymer with the ανβ3 integrin receptor cyclic RGD (c-RGD) were developed via ligand exchange and an accompanying self-assembly process. It was found that the structure of RGD-SPH QDs-clusters was propitious to reduce the capture of reticulo-endothelial system (RES) in virtue of external stealth ligands, and benefit to selectively accumulate at the tumor site after intravenous injection via active tumor targeting cooperated with the enhanced permeability and retention (EPR) effect. In the meantime, those clusters also recognized and enriched the cell surface when cocultured with the ανβ3 integrin receptor overexpressed malignant cells (U87MG tumor). On the basis of the results, fabricating mutil-functional nanocomposites integrated with the long-term circulation and dual-targeting effects should be an interesting strategy for imaging cancer in vitro and in vivo.
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Affiliation(s)
- Tao Deng
- Department of Pharmaceutical Engineering, and ‡Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University , Nanjing 210009, China
| | - Yanan Peng
- Department of Pharmaceutical Engineering, and ‡Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University , Nanjing 210009, China
| | - Rong Zhang
- Department of Pharmaceutical Engineering, and ‡Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University , Nanjing 210009, China
| | - Jie Wang
- Department of Pharmaceutical Engineering, and ‡Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University , Nanjing 210009, China
| | - Jie Zhang
- Department of Pharmaceutical Engineering, and ‡Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University , Nanjing 210009, China
| | - Yueqing Gu
- Department of Pharmaceutical Engineering, and ‡Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University , Nanjing 210009, China
| | - Dechun Huang
- Department of Pharmaceutical Engineering, and ‡Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University , Nanjing 210009, China
| | - Dawei Deng
- Department of Pharmaceutical Engineering, and ‡Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University , Nanjing 210009, China
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Li JF, Zhang YJ, Ding SY, Panneerselvam R, Tian ZQ. Core-Shell Nanoparticle-Enhanced Raman Spectroscopy. Chem Rev 2017; 117:5002-5069. [PMID: 28271881 DOI: 10.1021/acs.chemrev.6b00596] [Citation(s) in RCA: 512] [Impact Index Per Article: 73.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Core-shell nanoparticles are at the leading edge of the hot research topics and offer a wide range of applications in optics, biomedicine, environmental science, materials, catalysis, energy, and so forth, due to their excellent properties such as versatility, tunability, and stability. They have attracted enormous interest attributed to their dramatically tunable physicochemical features. Plasmonic core-shell nanomaterials are extensively used in surface-enhanced vibrational spectroscopies, in particular, surface-enhanced Raman spectroscopy (SERS), due to the unique localized surface plasmon resonance (LSPR) property. This review provides a comprehensive overview of core-shell nanoparticles in the context of fundamental and application aspects of SERS and discusses numerous classes of core-shell nanoparticles with their unique strategies and functions. Further, herein we also introduce the concept of shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS) in detail because it overcomes the long-standing limitations of material and morphology generality encountered in traditional SERS. We then explain the SERS-enhancement mechanism with core-shell nanoparticles, as well as three generations of SERS hotspots for surface analysis of materials. To provide a clear view for readers, we summarize various approaches for the synthesis of core-shell nanoparticles and their applications in SERS, such as electrochemistry, bioanalysis, food safety, environmental safety, cultural heritage, materials, catalysis, and energy storage and conversion. Finally, we exemplify about the future developments in new core-shell nanomaterials with different functionalities for SERS and other surface-enhanced spectroscopies.
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Affiliation(s)
- Jian-Feng Li
- State Key Laboratory for Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, iChEM, Xiamen University , Xiamen 361005, China.,Department of Physics, Xiamen University , Xiamen 361005, China
| | - Yue-Jiao Zhang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, iChEM, Xiamen University , Xiamen 361005, China
| | - Song-Yuan Ding
- State Key Laboratory for Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, iChEM, Xiamen University , Xiamen 361005, China
| | - Rajapandiyan Panneerselvam
- State Key Laboratory for Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, iChEM, Xiamen University , Xiamen 361005, China
| | - Zhong-Qun Tian
- State Key Laboratory for Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, iChEM, Xiamen University , Xiamen 361005, China
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11
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Abstract
XPS and other surface sensitive methods are being increasingly used to extract quantitative information about organic and inorganic coatings and contamination on nanoparticles. The extraction of coating thickness requires information about particle diameter from other measurements, such as electron microscopy, combined with a model that includes the physical processes associated with XPS. Advantages of using XPS include the sensitivity to very thin coatings (or surface contamination) and the ability to extract important information about organic layers. Single particle information from electron microsocpy combined with XPS sensitivity in determining composition make a powerful combination for nanoparticle anlaysis.
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12
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Wang YC, Engelhard MH, Baer DR, Castner DG. Quantifying the Impact of Nanoparticle Coatings and Nonuniformities on XPS Analysis: Gold/Silver Core-Shell Nanoparticles. Anal Chem 2016; 88:3917-25. [PMID: 26950247 PMCID: PMC4821750 DOI: 10.1021/acs.analchem.6b00100] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Spectral modeling of photoelectrons can serve as a valuable tool when combined with X-ray photoelectron spectroscopy (XPS) analysis. Herein, a new version of the NIST Simulation of Electron Spectra for Surface Analysis (SESSA 2.0) software, capable of directly simulating spherical multilayer NPs, was applied to model citrate stabilized Au/Ag-core/shell nanoparticles (NPs). The NPs were characterized using XPS and scanning transmission electron microscopy (STEM) to determine the composition and morphology of the NPs. The Au/Ag-core/shell NPs were observed to be polydispersed in size, nonspherical, and contain off-centered Au-cores. Using the average NP dimensions determined from STEM analysis, SESSA spectral modeling indicated that washed Au/Ag-core-shell NPs were stabilized with a 0.8 nm layer of sodium citrate and a 0.05 nm (one wash) or 0.025 nm (two wash) layer of adventitious hydrocarbon, but did not fully account for the observed XPS signal from the Au-core. This was addressed by a series of simulations and normalizations to account for contributions of NP nonsphericity and off-centered Au-cores. Both of these nonuniformities reduce the effective Ag-shell thickness, which effect the Au-core photoelectron intensity. The off-centered cores had the greatest impact for the particles in this study. When the contributions from the geometrical nonuniformities are included in the simulations, the SESSA generated elemental compositions that matched the XPS elemental compositions. This work demonstrates how spectral modeling software such as SESSA, when combined with experimental XPS and STEM measurements, advances the ability to quantitatively assess overlayer thicknesses for multilayer core-shell NPs and deal with complex, nonideal geometrical properties.
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Affiliation(s)
| | - Mark H Engelhard
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory , Box 999, Richland Washington 99352, United States
| | - Donald R Baer
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory , Box 999, Richland Washington 99352, United States
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