1
|
Guo GC, Zhao JP, Guo S, Shi WX, Liu FC, Lu TB, Zhang ZM. Building Co 16-N 3-Based UiO-MOF to Expand Design Parameters for MOF Photosensitization. Angew Chem Int Ed Engl 2024; 63:e202402374. [PMID: 38655601 DOI: 10.1002/anie.202402374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/20/2024] [Accepted: 04/23/2024] [Indexed: 04/26/2024]
Abstract
The construction of secondary building units (SBUs) in versatile metal-organic frameworks (MOFs) represents a promising method for developing multi-functional materials, especially for improving their sensitizing ability. Herein, we developed a dual small molecules auxiliary strategy to construct a high-nuclear transition-metal-based UiO-architecture Co16-MOF-BDC with visible-light-absorbing capacity. Remarkably, the N3 - molecule in hexadecameric cobalt azide SBU offers novel modification sites to precise bonding of strong visible-light-absorbing chromophores via click reaction. The resulting Bodipy@Co16-MOF-BDC exhibits extremely high performance for oxidative coupling benzylamine (~100 % yield) via both energy and electron transfer processes, which is much superior to that of Co16-MOF-BDC (31.5 %) and Carboxyl @Co16-MOF-BDC (37.5 %). Systematic investigations reveal that the advantages of Bodipy@Co16-MOF-BDC in dual light-absorbing channels, robust bonding between Bodipy/Co16 clusters and efficient electron-hole separation can greatly boost photosynthesis. This work provides an ideal molecular platform for synergy between photosensitizing MOFs and chromophores by constructing high-nuclear transition-metal-based SBUs with surface-modifiable small molecules.
Collapse
Affiliation(s)
- Guang-Chen Guo
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Jiong-Peng Zhao
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Song Guo
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Wen-Xiong Shi
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Fu-Chen Liu
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Tong-Bu Lu
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Zhi-Ming Zhang
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, China
| |
Collapse
|
2
|
Beckhoff B. Traceable Characterization of Nanomaterials by X-ray Spectrometry Using Calibrated Instrumentation. NANOMATERIALS 2022; 12:nano12132255. [PMID: 35808090 PMCID: PMC9268651 DOI: 10.3390/nano12132255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 05/27/2022] [Accepted: 06/12/2022] [Indexed: 11/16/2022]
Abstract
Traceable characterization methods allow for the accurate correlation of the functionality or toxicity of nanomaterials with their underlaying chemical, structural or physical material properties. These correlations are required for the directed development of nanomaterials to reach target functionalities such as conversion efficiencies or selective sensitivities. The reliable characterization of nanomaterials requires techniques that often need to be adapted to the nano-scaled dimensions of the samples with respect to both the spatial dimensions of the probe and the instrumental or experimental discrimination capability. The traceability of analytical methods revealing information on chemical material properties relies on reference materials or qualified calibration samples, the spatial elemental distributions of which must be very similar to the nanomaterial of interest. At the nanoscale, however, only few well-known reference materials exist. An alternate route to establish the required traceability lays in the physical calibration of the analytical instrument’s response behavior and efficiency in conjunction with a good knowledge of the various interaction probabilities. For the elemental analysis, speciation, and coordination of nanomaterials, such a physical traceability can be achieved with X-ray spectrometry. This requires the radiometric calibration of energy- and wavelength-dispersive X-ray spectrometers, as well as the reliable determination of atomic X-ray fundamental parameters using such instrumentation. In different operational configurations, the information depths, discrimination capability, and sensitivity of X-ray spectrometry can be considerably modified while preserving its traceability, allowing for the characterization of surface contamination as well as interfacial thin layer and nanoparticle chemical compositions. Furthermore, time-resolved and hybrid approaches provide access to analytical information under operando conditions or reveal dimensional information, such as elemental or species depth profiles of nanomaterials. The aim of this review is to demonstrate the absolute quantification capabilities of SI-traceable X-ray spectrometry based upon calibrated instrumentation and knowledge about X-ray interaction probabilities.
Collapse
Affiliation(s)
- Burkhard Beckhoff
- Physikalisch-Technische Bundesanstalt, Abbestraße 2-12, 10587 Berlin, Germany
| |
Collapse
|
3
|
Huang W, Ordikhani-Seyedlar R, Samanta A, Shaw S, Ding H. Quantification of superhydrophobic functionalization for laser textured metal surfaces. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128126] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
4
|
Geißler D, Nirmalananthan-Budau N, Scholtz L, Tavernaro I, Resch-Genger U. Analyzing the surface of functional nanomaterials-how to quantify the total and derivatizable number of functional groups and ligands. Mikrochim Acta 2021; 188:321. [PMID: 34482449 PMCID: PMC8418596 DOI: 10.1007/s00604-021-04960-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/08/2021] [Indexed: 12/04/2022]
Abstract
Functional nanomaterials (NM) of different size, shape, chemical composition, and surface chemistry are of increasing relevance for many key technologies of the twenty-first century. This includes polymer and silica or silica-coated nanoparticles (NP) with covalently bound surface groups, semiconductor quantum dots (QD), metal and metal oxide NP, and lanthanide-based NP with coordinatively or electrostatically bound ligands, as well as surface-coated nanostructures like micellar encapsulated NP. The surface chemistry can significantly affect the physicochemical properties of NM, their charge, their processability and performance, as well as their impact on human health and the environment. Thus, analytical methods for the characterization of NM surface chemistry regarding chemical identification, quantification, and accessibility of functional groups (FG) and surface ligands bearing such FG are of increasing importance for quality control of NM synthesis up to nanosafety. Here, we provide an overview of analytical methods for FG analysis and quantification with special emphasis on bioanalytically relevant FG broadly utilized for the covalent attachment of biomolecules like proteins, peptides, and oligonucleotides and address method- and material-related challenges and limitations. Analytical techniques reviewed include electrochemical titration methods, optical assays, nuclear magnetic resonance and vibrational spectroscopy, as well as X-ray based and thermal analysis methods, covering the last 5-10 years. Criteria for method classification and evaluation include the need for a signal-generating label, provision of either the total or derivatizable number of FG, need for expensive instrumentation, and suitability for process and production control during NM synthesis and functionalization.
Collapse
Affiliation(s)
- Daniel Geißler
- Bundesanstalt für Materialforschung und -prüfung (BAM), Division Biophotonics (BAM-1.2), Richard-Willstätter-Str. 11, 12489, Berlin, Germany
| | - Nithiya Nirmalananthan-Budau
- Bundesanstalt für Materialforschung und -prüfung (BAM), Division Biophotonics (BAM-1.2), Richard-Willstätter-Str. 11, 12489, Berlin, Germany
| | - Lena Scholtz
- Bundesanstalt für Materialforschung und -prüfung (BAM), Division Biophotonics (BAM-1.2), Richard-Willstätter-Str. 11, 12489, Berlin, Germany
| | - Isabella Tavernaro
- Bundesanstalt für Materialforschung und -prüfung (BAM), Division Biophotonics (BAM-1.2), Richard-Willstätter-Str. 11, 12489, Berlin, Germany
| | - Ute Resch-Genger
- Bundesanstalt für Materialforschung und -prüfung (BAM), Division Biophotonics (BAM-1.2), Richard-Willstätter-Str. 11, 12489, Berlin, Germany.
| |
Collapse
|
5
|
Arcudi F, Ðorđević L, Rebeccani S, Cacioppo M, Zanut A, Valenti G, Paolucci F, Prato M. Lighting up the Electrochemiluminescence of Carbon Dots through Pre- and Post-Synthetic Design. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2100125. [PMID: 34258161 PMCID: PMC8261489 DOI: 10.1002/advs.202100125] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/28/2021] [Indexed: 05/19/2023]
Abstract
Carbon dots (CDs), defined by their size of less than 10 nm, are a class of photoluminescent (PL) and electrochemiluminescent (ECL) nanomaterials that include a variety of carbon-based nanoparticles. However, the control of their properties, especially ECL, remains elusive and afflicted by a series of problems. Here, the authors report CDs that display ECL in water via coreactant ECL, which is the dominant mechanism in biosensing applications. They take advantage of a multicomponent bottom-up approach for preparing and studying the luminescence properties of CDs doped with a dye acting as PL and ECL probe. The dependence of luminescence properties on the surface chemistry is further reported, by investigating the PL and ECL response of CDs with surfaces rich in primary, methylated, or propylated amino groups. While precursors that contribute to the core characterize the PL emission, the surface states influence the efficiency of the excitation-dependent PL emission. The ECL emission is influenced by surface states from the organic shell, but states of the core strongly interact with the surface, influencing the ECL efficiency. These findings offer a framework of pre- and post-synthetic design strategies to improve ECL emission properties, opening new opportunities for exploring biosensing applications of CDs.
Collapse
Affiliation(s)
- Francesca Arcudi
- Department of Chemical and Pharmaceutical SciencesINSTM UdR TriesteUniversity of TriesteVia Licio Giorgieri 1Trieste34127Italy
- Present address:
Department of ChemistryNorthwestern University2145 Sheridan RoadEvanstonIL60208USA
| | - Luka Ðorđević
- Department of Chemical and Pharmaceutical SciencesINSTM UdR TriesteUniversity of TriesteVia Licio Giorgieri 1Trieste34127Italy
- Present address:
Department of ChemistryNorthwestern University2145 Sheridan RoadEvanstonIL60208USA
| | - Sara Rebeccani
- Department of Chemistry “Giacomo Ciamician”University of BolognaVia Selmi 2Bologna40126Italy
| | - Michele Cacioppo
- Department of Chemical and Pharmaceutical SciencesINSTM UdR TriesteUniversity of TriesteVia Licio Giorgieri 1Trieste34127Italy
- Carbon Bionanotechnology GroupCenter for Cooperative Research in Biomaterials (CIC biomaGUNE)Basque Research and Technology Alliance (BRTA)Paseo de Miramón 182Donostia‐San Sebastián20014Spain
| | - Alessandra Zanut
- Department of Chemistry “Giacomo Ciamician”University of BolognaVia Selmi 2Bologna40126Italy
- Present address:
Tandon School of EngineeringNew York UniversityBrooklynNY11201USA
| | - Giovanni Valenti
- Department of Chemistry “Giacomo Ciamician”University of BolognaVia Selmi 2Bologna40126Italy
| | - Francesco Paolucci
- Department of Chemistry “Giacomo Ciamician”University of BolognaVia Selmi 2Bologna40126Italy
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical SciencesINSTM UdR TriesteUniversity of TriesteVia Licio Giorgieri 1Trieste34127Italy
- Carbon Bionanotechnology GroupCenter for Cooperative Research in Biomaterials (CIC biomaGUNE)Basque Research and Technology Alliance (BRTA)Paseo de Miramón 182Donostia‐San Sebastián20014Spain
- IkerbasqueBasque Foundation for ScienceBilbao48013Spain
| |
Collapse
|
6
|
Tehrani T, Meghdadi S, Salarvand Z, Tavakoli B, Eskandari K, Amirnasr M. An anthracene–quinoline based dual-mode fluorometric–colorimetric sensor for the detection of Fe 3+ and its application in live cell imaging. NEW J CHEM 2021. [DOI: 10.1039/d1nj00178g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly sensitive anthracene–quinoline based dual-mode sensor has been synthesized and used for the fluorometric and colorimetric detection of Fe3+ and in live cell imaging.
Collapse
Affiliation(s)
- Tahereh Tehrani
- Department of Chemistry
- Isfahan University of Technology
- Isfahan 8415683111
- Iran
| | - Soraia Meghdadi
- Department of Chemistry
- Isfahan University of Technology
- Isfahan 8415683111
- Iran
| | - Zohreh Salarvand
- Department of Chemistry
- Chemistry and Petrochemistry Research Center
- Institute of Standard and Industrial Research of Iran (ISIRI)
- Karaj 3174734563
- Iran
| | - Behnam Tavakoli
- Department of Chemistry
- Isfahan University of Technology
- Isfahan 8415683111
- Iran
| | - Kiamars Eskandari
- Department of Chemistry
- Isfahan University of Technology
- Isfahan 8415683111
- Iran
| | - Mehdi Amirnasr
- Department of Chemistry
- Isfahan University of Technology
- Isfahan 8415683111
- Iran
| |
Collapse
|
7
|
Sun Y, Kunc F, Balhara V, Coleman B, Kodra O, Raza M, Chen M, Brinkmann A, Lopinski GP, Johnston LJ. Quantification of amine functional groups on silica nanoparticles: a multi-method approach. NANOSCALE ADVANCES 2019; 1:1598-1607. [PMID: 36132607 PMCID: PMC9417554 DOI: 10.1039/c9na00016j] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 02/21/2019] [Indexed: 05/08/2023]
Abstract
Surface chemistry is an important factor for quality control during production of nanomaterials and for controlling their behavior in applications and when released into the environment. Here we report a comparison of four methods for quantifying amine functional groups on silica nanoparticles (NPs). Two colorimetric assays are examined, ninhydrin and 4-nitrobenzaldehyde, which are convenient for routine analysis and report on reagent accessible amines. Results from the study of a range of commercial NPs with different sizes and surface loadings show that the assays account for 50-100% of the total amine content, as determined by dissolution of NPs under basic conditions and quantification by solution-state 1H NMR. To validate the surface quantification by the colorimetric assays, the NPs are modified with a trifluoromethylated benzaldehyde probe to enhance sensitivity for quantitative 19F solid state NMR and X-ray photoelectron spectroscopy (XPS). Good agreement between the assays and the determination from solid-state NMR is reinforced by elemental ratios from XPS, which indicate that in most cases the difference between total and accessible amine content reflects amines that are outside the depth probed by XPS. Overall the combined results serve to validate the relatively simple colorimetric assays and indicate that the reactions are efficient at quantifying surface amines, by contrast to some other covalent modifications that have been employed for functional group quantification.
Collapse
Affiliation(s)
- Ying Sun
- National Research Council Canada Ottawa ON Canada K1A 0R6
| | - Filip Kunc
- National Research Council Canada Ottawa ON Canada K1A 0R6
| | - Vinod Balhara
- National Research Council Canada Ottawa ON Canada K1A 0R6
| | - Brian Coleman
- National Research Council Canada Ottawa ON Canada K1A 0R6
| | - Oltion Kodra
- National Research Council Canada Ottawa ON Canada K1A 0R6
| | - Mohammad Raza
- National Research Council Canada Ottawa ON Canada K1A 0R6
| | - Maohui Chen
- National Research Council Canada Ottawa ON Canada K1A 0R6
| | | | | | | |
Collapse
|
8
|
Sarma D, Carl P, Climent E, Schneider RJ, Rurack K. Multifunctional Polystyrene Core/Silica Shell Microparticles with Antifouling Properties for Bead-Based Multiplexed and Quantitative Analysis. ACS APPLIED MATERIALS & INTERFACES 2019; 11:1321-1334. [PMID: 30507151 DOI: 10.1021/acsami.8b10306] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Commercial bead-based assays are commonly built upon polystyrene particles. The polymeric carrier can be encoded with organic dyes and has ideal material properties for cytometric applications such as low density and high refractive index. However, functional groups are conventionally integrated during polymerization and subsequent modification is limited to the reactivity of those groups. Additionally, polystyrene as the core material leads to many hydrophobic areas still being present on the beads' surfaces even after functionalization, rendering the particles prone to nonspecific adsorption during an application. The latter calls for several washing steps and the use of additives in (bio)analytical assays. In this contribution, we show how these limitations can be overcome by using monodisperse polystyrene (PS) core/silica (SiO2) shell particles (SiO2@PS). Two different hydrophobic BODIPY (boron-dipyrromethene) dyes were encapsulated inside a poly(vinylpyrrolidone) (PVP) -stabilized polystyrene core in different concentrations to create 5-plex arrays in two separate detection channels of a cytometer. A subsequent modification of the silica shell with an equimolar APTES/PEGS (aminopropyltriethoxysilane/polyethylene glycol silane) blend added multifunctional properties to the hybrid core/shell microparticles in a single step: APTES provides amino groups for the attachment of a caffeine derivative (as a hapten) to create antigen-coupled microspheres; the PEG moiety effectively suppresses nonspecific binding of antibodies, endowing the surface with antifouling properties. The particles were applied in a competitive fluorescence immunoassay in suspension, and a highly selective wash-free assay for the detection of caffeine in beverages was developed as a proof of concept.
Collapse
Affiliation(s)
- Dominik Sarma
- Department of Analytical Chemistry; Reference Materials , Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Straße 11 , 12489 Berlin , Germany
- Department of Chemistry , Humboldt-Universität zu Berlin , Brook-Taylor-Straße 2 , 12489 Berlin , Germany
| | - Peter Carl
- Department of Analytical Chemistry; Reference Materials , Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Straße 11 , 12489 Berlin , Germany
- Department of Chemistry , Humboldt-Universität zu Berlin , Brook-Taylor-Straße 2 , 12489 Berlin , Germany
| | - Estela Climent
- Department of Analytical Chemistry; Reference Materials , Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Straße 11 , 12489 Berlin , Germany
| | - Rudolf J Schneider
- Department of Analytical Chemistry; Reference Materials , Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Straße 11 , 12489 Berlin , Germany
- Technische Universität Berlin , Straße des 17. Juni 135 , 10623 Berlin , Germany
| | - Knut Rurack
- Department of Analytical Chemistry; Reference Materials , Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Straße 11 , 12489 Berlin , Germany
| |
Collapse
|
9
|
Böke F, Labude N, Lauria I, Ernst S, Müller-Newen G, Neuss S, Fischer H. Biological Activation of Bioinert Medical High-Performance Oxide Ceramics by Hydrolytically Stable Immobilization of c(RGDyK) and BMP-2. ACS APPLIED MATERIALS & INTERFACES 2018; 10:38669-38680. [PMID: 30280884 DOI: 10.1021/acsami.8b08900] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
High-performance oxide ceramics (HPOC), such as alumina, zirconia, and dispersion ceramics thereof are successfully used as articulating components in joint arthroplasty. HPOC exhibit excellent wear resistance, high strength, and cytocompatible behavior; however, they lack sufficient tissue bonding capability. Thus, they are primarily deployed as low-wear-bearing articulating components in arthroplasty without direct tissue contact, although proper cellular stimulation would hold significant advantages. Here, we describe a surface modification approach for HPOC, enabling hydrolytically stable interfacial binding of c(RGDyK) peptides and BMP-2 proteins to significantly improve the adhesion and osteogenic differentiation of human mesenchymal stem cells (hMSCs) without altering the mechanical properties of the underlying ceramic substrates. Analyses of cellular attachment of murine fibroblasts (L929), human alveolar basal epithelial cells (A549), hMSCs on c(RGDyK), and osteogenic differentiation of hMSCs on BMP-2-coated interfaces demonstrate significant improvements of cell adhesion and an enhanced osteogenic differentiation potential in vitro. The presented approach provides a strategy for the development of a novel class of bioactive HPOC with osseointegration potential that could lead to novel therapeutic solutions for biomedical applications. Furthermore, the developed surface modification is designed in a way to be readily translated to other medically employed bioinert materials in the future.
Collapse
|
10
|
Fetterly CR, Olsen BC, Luber EJ, Buriak JM. Vapor-Phase Nanopatterning of Aminosilanes with Electron Beam Lithography: Understanding and Minimizing Background Functionalization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4780-4792. [PMID: 29614858 DOI: 10.1021/acs.langmuir.8b00679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Electron beam lithography (EBL) is a highly precise, serial method for patterning surfaces. Positive tone EBL resists enable patterned exposure of the underlying surface, which can be subsequently functionalized for the application of interest. In the case of widely used native oxide-capped silicon surfaces, coupling an activated silane with electron beam lithography would enable nanoscale chemical patterning of the exposed regions. Aminoalkoxysilanes are extremely useful due to their reactive amino functionality but have seen little attention for nanopatterning silicon surfaces with an EBL resist due to background contamination. In this work, we investigated three commercial positive tone EBL resists, PMMA (950k and 495k) and ZEP520A (57k), as templates for vapor-phase patterning of two commonly used aminoalkoxysilanes, 3-aminopropyltrimethoxysilane (APTMS) and 3-aminopropyldiisopropylethoxysilane (APDIPES). The PMMA resists were susceptible to significant background reaction within unpatterned areas, a problem that was particularly acute with APTMS. On the other hand, with both APTMS and APDIPES exposure, unpatterned regions of silicon covered by the ZEP520A resist emerged pristine, as shown both with SEM images of the surfaces of the underlying silicon and through the lack of electrostatically driven binding of negatively charged gold nanoparticles. The ZEP520A resist allowed for the highly selective deposition of these alkoxyaminosilanes in the exposed areas, leaving the unpatterned areas clean, a claim also supported by contact angle measurements with four probe liquids and X-ray photoelectron spectroscopy (XPS). We investigated the mechanistic reasons for the stark contrast between the PMMA resists and ZEP520A, and it was found that the efficacy of resist removal appeared to be the critical factor in reducing the background functionalization. Differences in the molecular weight of the PMMA resists and the resulting influence on APTMS diffusion through the resist films are unlikely to have a significant impact. Area-selective nanopatterning of 15 nm gold nanoparticles using the ZEP520A resist was demonstrated, with no observable background conjugation noted in the unexposed areas on the silicon surface by SEM.
Collapse
Affiliation(s)
- Christopher R Fetterly
- Department of Chemistry , University of Alberta , 11227 Saskatchewan Drive , Edmonton , Alberta T6G 2G2 , Canada
- National Institute for Nanotechnology, National Research Council Canada , 11421 Saskatchewan Drive , Edmonton , Alberta T6G 2M9 , Canada
| | - Brian C Olsen
- Department of Chemistry , University of Alberta , 11227 Saskatchewan Drive , Edmonton , Alberta T6G 2G2 , Canada
- National Institute for Nanotechnology, National Research Council Canada , 11421 Saskatchewan Drive , Edmonton , Alberta T6G 2M9 , Canada
| | - Erik J Luber
- Department of Chemistry , University of Alberta , 11227 Saskatchewan Drive , Edmonton , Alberta T6G 2G2 , Canada
- National Institute for Nanotechnology, National Research Council Canada , 11421 Saskatchewan Drive , Edmonton , Alberta T6G 2M9 , Canada
| | - Jillian M Buriak
- Department of Chemistry , University of Alberta , 11227 Saskatchewan Drive , Edmonton , Alberta T6G 2G2 , Canada
- National Institute for Nanotechnology, National Research Council Canada , 11421 Saskatchewan Drive , Edmonton , Alberta T6G 2M9 , Canada
| |
Collapse
|
11
|
Fischer T, Dietrich PM, Unger WES, Rurack K. Multimode Surface Functional Group Determination: Combining Steady-State and Time-Resolved Fluorescence with X-ray Photoelectron Spectroscopy and Absorption Measurements for Absolute Quantification. Anal Chem 2016; 88:1210-7. [DOI: 10.1021/acs.analchem.5b03468] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tobias Fischer
- Bundesanstalt für Materialforschung und −prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
| | - Paul M. Dietrich
- Bundesanstalt für Materialforschung und −prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
| | - Wolfgang E. S. Unger
- Bundesanstalt für Materialforschung und −prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
| | - Knut Rurack
- Bundesanstalt für Materialforschung und −prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
| |
Collapse
|
12
|
Szwajca A, Krzywiecki M, Koroniak H. Self-assembled monolayers of partially fluorinated alcohols on Si(001): XPS and UV-photoemission study. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.10.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
13
|
Dietrich PM, Streeck C, Glamsch S, Ehlert C, Lippitz A, Nutsch A, Kulak N, Beckhoff B, Unger WES. Quantification of Silane Molecules on Oxidized Silicon: Are there Options for a Traceable and Absolute Determination? Anal Chem 2015; 87:10117-24. [DOI: 10.1021/acs.analchem.5b02846] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- P. M. Dietrich
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
| | - C. Streeck
- Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587 Berlin, Germany
| | - S. Glamsch
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Fabeckstr. 34/36, 14195 Berlin, Germany
| | - C. Ehlert
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
- Institut
für Chemie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
| | - A. Lippitz
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
| | - A. Nutsch
- Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587 Berlin, Germany
| | - N. Kulak
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Fabeckstr. 34/36, 14195 Berlin, Germany
| | - B. Beckhoff
- Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587 Berlin, Germany
| | - W. E. S. Unger
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
| |
Collapse
|
14
|
Lempke L, Fischer T, Bell J, Kraus W, Rurack K, Krause N. Gold-catalyzed allene cycloisomerization for pyrrole synthesis: towards highly fluorinated BODIPY dyes. Org Biomol Chem 2015; 13:3787-91. [PMID: 25695474 DOI: 10.1039/c4ob02671c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A novel synthetic strategy toward highly fluorinated BODIPY dyes with exceptional photostabilities relying on sustainable gold catalysis has been developed. A key to the tailored pyrrole precursors is the gold catalysis performed in ionic liquids as the reaction medium, allowing a facile recycling of the catalysts. The dyes prepared are well-matching with the spectral windows of popular rhodamine dyes and possess high brightness while showing a distinctly higher photostability than the rhodamines especially in aprotic solvents.
Collapse
Affiliation(s)
- Linda Lempke
- Organic Chemistry, Dortmund University of Technology, Otto-Hahn-Str. 6, D-44227 Dortmund, Germany.
| | | | | | | | | | | |
Collapse
|
15
|
Jia H, Gao X, Shi Y, Sayyadi N, Zhang Z, Zhao Q, Meng Q, Zhang R. Fluorescence detection of Fe(3+) ions in aqueous solution and living cells based on a high selectivity and sensitivity chemosensor. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 149:674-81. [PMID: 25985133 DOI: 10.1016/j.saa.2015.04.111] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Revised: 04/28/2015] [Accepted: 04/29/2015] [Indexed: 05/05/2023]
Abstract
Although ferric ion (Fe(3+)) performs critical roles in diverse biochemical processes in living systems, its physiological and pathophysiological functions have not been fully explored due to the lack of methods for quantification of Fe(3+) ions in biological system. In this work, a highly sensitive and selective fluorescence chemosensor, L, was developed for the detection of Fe(3+) ions in aqueous solution and in living cells. L was facile synthesized by one step reaction and well characterized by NMR, API-ES, FT-IR, and elementary analysis. The prepared chemosensor displayed excellent selectivity for Fe(3+) ions detection over a wide range of tested metal ions. In the present of Fe(3+) ions, the strong green fluorescence of L was substantially quenched. The 1:1 stoichiometry of the complexation was confirmed by a Job's plot. The association constant (Ka) of L with Fe(3+) was evaluated using the Benesi-Hildebrand method and was found to be 1.36×10(4) M(-1). The MTT assay determined that L exhibits low cytotoxicity toward living cells. Confocal imaging and flow cytometry studies showed that L is readily interiorized by MDA-MB-231 cells through an energy-dependent pathway and could be used to detect of Fe(3+) ions in living cells.
Collapse
Affiliation(s)
- Hongmin Jia
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114044, China
| | - Xue Gao
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114044, China
| | - Yu Shi
- Department of Chemistry and Biomolecular Sciences, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia
| | - Nima Sayyadi
- Department of Chemistry and Biomolecular Sciences, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia
| | - Zhiqiang Zhang
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114044, China.
| | - Qi Zhao
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114044, China
| | - Qingtao Meng
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114044, China.
| | - Run Zhang
- Department of Chemistry and Biomolecular Sciences, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia
| |
Collapse
|