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Lee E, Choi S, Zhao Y, Yu J. Open Linear Polymer Host-Guest Interactions Sensed by Luminescent Silver Nanodots. ACS Sens 2023; 8:3240-3247. [PMID: 37480154 DOI: 10.1021/acssensors.3c01042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2023]
Abstract
The selectivity of the linear polymer chain toward its binding moieties has been considered negligible; thus, a clear demonstration showing the best-fit binding of a linear polymer to its guest counterpart is still unknown. Luminescent poly(acrylic acid) (PAA)-stabilized silver nanodots (PAA-AgNDs) have been applied as a turn-on sensor to monitor the interaction between the PAA chain and its binding cations. The binding of cations ions to the PAA chain may cross-link the linear PAA chain via coordination with carboxylate, which increases the rigidity of the polymer chain, retards the nonradiative decay of PAA-AgNDs, and consequently enhances the emission of silver nanodots while inducing a blue-shift of its emission spectrum. For the first time, we have demonstrated that a linear polymer chain can act as an open host to selectively bind to its best-matching cations. Specifically, among Group 2 cations (Mg2+, Ca2+, Sr2+, Ba2+), calcium ions show the strongest bonding to the PAA polymer chain. Our research suggests that, with extra rigidity, the polymer improves its chemical stability as calcium ions cross-linked the linear polymer. Meanwhile, it has also been demonstrated that luminescent silver nanodots can be excellent probes for the detection of polymer activities with straightforward and simple visualization methods.
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Affiliation(s)
- Eunhye Lee
- Department of Chemistry Education, Seoul National University, Seoul 08826, Republic of Korea
| | - Sungmoon Choi
- Center for Educational Research, Seoul National University, Seoul 08826, Republic of Korea
| | - Yanlu Zhao
- Department of Chemistry Education, Seoul National University, Seoul 08826, Republic of Korea
| | - Junhua Yu
- Department of Chemistry Education, Seoul National University, Seoul 08826, Republic of Korea
- Department of Science Education, Science Education Research Center, Seoul National University, Seoul 08826, Republic of Korea
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Hsu SH, Reinhoudt DN, Huskens J, Velders AH. Lateral interactions at functional monolayers. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02696d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Rosendahl SM, Burgess IJ. Electrochemical and infrared spectroscopy studies of 4-mercaptobenzoic acid SAMs on gold surfaces. Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2007.11.020] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Bala T, Prasad BLV, Sastry M, Kahaly MU, Waghmare UV. Interaction of Different Metal Ions with Carboxylic Acid Group: A Quantitative Study. J Phys Chem A 2007; 111:6183-90. [PMID: 17585841 DOI: 10.1021/jp067906x] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The binding strength of the carboxylic acid group (-COOH) with different divalent metal ions displays considerable variation in arachidic acid (AA) thin films. It is considered that in AA thin films the metal ions straddle the hydrophilic regions of the stacked bilayers of AA molecules via formation of carboxylates. In this study first the uptake of different divalent cations in films of AA is estimated by atomic absorption spectroscopy (AAS). Through the amount of cation uptake, it is found that the strength of binding of different cations varies as Ca2+>Co2+>Pb2+>Cd2+. Variation in the binding strength of different ions is also manifested in experiments where AA thin films are exposed to metal ion mixtures. The higher binding strength of AA with certain metal ions when exposed individually, as well as the preference over the other metal ions when exposed to mixtures, reveal some interesting deviation from the expected behavior based on considerations of ionic radii. For example, Pb2+ is always found to bind to AA much more strongly than Cd2+ even though the latter has smaller ionic radius, indicating that other factors also play an important role in governing the binding strength trends apart from the effects of ionic radii. Then, to get a more meaningful knowledge regarding the binding capability, first-principles calculations based on density functional theory have been applied to study the interaction of different cations with the simplest carboxylic acid, acetic acid, that can result in formation of metal diacetates. Their electronic and molecular structures, cohesive energies, and stiffness of the local potential energy well at the cation (M) site are determined and attempts are made to understand the diversity in geometry and the properties of binding of different metal ions with -COOH group. We find that the calculated M-O bond energies depend sensitively on the chemistry of M atom and follow the experimentally observed trends quite accurately. The trends in M-O bond energies and hence the total M-acetate binding energy trends can actually be related to their molecular structures that fall into different categories: Ca and Cd have tetrahedral coordination; Fe, Ni, and Co exhibit planar 4-fold coordination; and Pb is off-centered from the planar structure (forming pyramidal structure) due to its stereochemically active lone pair of electrons.
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Affiliation(s)
- Tanushree Bala
- Materials Chemistry Division, National Chemical Laboratory, Pune 411 008, India
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Ruckenstein E, Li ZF. Surface modification and functionalization through the self-assembled monolayer and graft polymerization. Adv Colloid Interface Sci 2005; 113:43-63. [PMID: 15763238 DOI: 10.1016/j.cis.2004.07.009] [Citation(s) in RCA: 210] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2004] [Accepted: 07/27/2004] [Indexed: 11/22/2022]
Abstract
The modification of a surface at the molecular level with precise control of the building blocks generates an integrated molecular system. This field has progressed rapidly in recent years through the use of self-assembled monolayer (SAM) interfaces. Recent developments on surface-initiated chemical reactions, functionalization, and graft polymerization on SAM interfaces are emphasized in the present review. A number of surface modifications by grafting are reviewed. The grafting of polyaniline on a glass surface, previously modified with a silane self-assembled monolayer (SAM), is examined in detail for both planar and 3-D systems, such as fibers, nanoparticles, and even polymer patterned surfaces. We also discuss the graft polymerization of water-soluble polymers on the surface of silicon nanoparticles, which generate stable aqueous colloidal solutions and have numerous applications. Finally, we compare and review some surface-modification techniques on the surfaces of polymers, such as two-solvent entrapment, polymer blending, and chemical grafting, which improve their biocompatibility.
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Affiliation(s)
- E Ruckenstein
- Department of Chemical and Biological Engineering, State University of New York at Buffalo, Buffalo, NY 14260, USA.
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Ryu DY, Free ML. The use of electrochemical quartz crystal microbalance and surface tension measurements for the determination of octylamine and cetylpyridinium chloride adsorption in sodium chloride solutions. Colloids Surf A Physicochem Eng Asp 2003. [DOI: 10.1016/s0927-7757(03)00417-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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7
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Ryu DY, Free ML. The importance of temperature and viscosity effects for surfactant adsorption measurements made using the electrochemical quartz crystal microbalance. J Colloid Interface Sci 2003; 264:402-6. [PMID: 16256658 DOI: 10.1016/s0021-9797(03)00381-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2002] [Accepted: 05/20/2003] [Indexed: 12/01/2022]
Abstract
The measurement of adsorbed surfactant is important to fields such as corrosion inhibition, metal cleaning, and separation technologies. The electrochemical quartz crystal microbalance (EQCM) is an important tool that can be used to measure adsorbed surfactant. However, such measurements are subject to significant temperature and viscosity effects that must be appropriately considered. This paper discusses the effect of temperature and viscosity on EQCM measurements in solution environments and the ability of the EQCM to measure surfactant adsorption.
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Affiliation(s)
- Dong Y Ryu
- Department of Metallurgical Engineering, University of Utah, Salt Lake City, UT 84112, USA.
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Swami A, Kumar A, Selvakannan PR, Mandal S, Sastry M. Langmuir-Blodgett films of laurylamine-modified hydrophobic gold nanoparticles organized at the air-water interface. J Colloid Interface Sci 2003; 260:367-73. [PMID: 12686188 DOI: 10.1016/s0021-9797(03)00047-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The organization of hydrophobized colloidal gold nanoparticles at air-water interface and the formation thereafter of lamellar, multilayer films of the gold nanoparticles by the Langmuir-Blodgett technique is described in this paper. The hydrophobization of the colloidal particles was accomplished by the direct chemisorption of laurylamine molecules on aqueous colloidal gold nanoparticles during a phase-transfer process. While monolayers of the laurylamine-capped gold nanoparticles at the air-water interface were not amenable to layer-by-layer transfer onto solid supports, it was observed that addition of the water-insoluble amphiphile octadecanol to the gold nanoparticle solution improved the stability of the monolayer at the interface as well as the multilayer assembly protocol. The organization of the gold nanoparticles at the air-water interface was followed by surface pressure-area isotherm measurements while the formation of multilayer films of the nanoparticles by the Langmuir-Blodgett technique was monitored by quartz crystal microgravimetry, UV-vis spectroscopy, Fourier transform infrared spectroscopy, and transmission electron microscopy.
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Affiliation(s)
- Anita Swami
- Materials Chemistry Division, National Chemical Laboratory, Pune 411 008, India
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Flink S, Boukamp BA, van den Berg A, van Veggel FCJM, Reinhoudt DN. Electrochemical Detection of Electrochemically Inactive Cations by Self-Assembled Monolayers of Crown Ethers. J Am Chem Soc 1998. [DOI: 10.1021/ja9734713] [Citation(s) in RCA: 147] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Simon Flink
- Contribution from the Department of Supramolecular Chemistry and Technology, MESA Research Institute, and Department of Inorganic Materials Science, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Bernard A. Boukamp
- Contribution from the Department of Supramolecular Chemistry and Technology, MESA Research Institute, and Department of Inorganic Materials Science, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Albert van den Berg
- Contribution from the Department of Supramolecular Chemistry and Technology, MESA Research Institute, and Department of Inorganic Materials Science, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Frank C. J. M. van Veggel
- Contribution from the Department of Supramolecular Chemistry and Technology, MESA Research Institute, and Department of Inorganic Materials Science, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - David N. Reinhoudt
- Contribution from the Department of Supramolecular Chemistry and Technology, MESA Research Institute, and Department of Inorganic Materials Science, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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pH Dependent changes in the optical properties of carboxylic acid derivatized silver colloidal particles. Colloids Surf A Physicochem Eng Asp 1997. [DOI: 10.1016/s0927-7757(97)00087-3] [Citation(s) in RCA: 183] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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