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Block Copolymer Supported Gold Nanoparticles Assemblies with Exposed Gold Surface. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-1485-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Xu H, Casabianca LB. Dual Fluorescence and NMR Study for the Interaction between Xanthene Dyes and Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:385-390. [PMID: 33356333 DOI: 10.1021/acs.langmuir.0c03020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Fluorescent dyes and nanoparticles (NPs) have been widely used together to make novel biosensors, taking advantage of their unique characteristics. It is crucial to have techniques that enable us to gain detailed and high-resolution information regarding the interaction between NPs and fluorescent dyes. In this work, we chose rhodamine B (RhB) and amidine- and carboxylate-modified polystyrene (CML) NPs as models and employed both NMR (1H and STD-NMR) and optical (UV-vis and fluorescence) techniques to investigate the interaction between NPs and fluorescent dyes. From UV-vis and fluorescence spectroscopy, we see that there are larger red shifts when rhodamine B binds to carboxylate-modified polystyrene NPs than amidine-modified NPs. Correspondingly, RhB has broader NMR peaks and a larger STD effect when binding to CML NPs than amidine NPs. Results from these two techniques validate each other. It is notable that the NMR techniques provide more reliable data than UV-vis and fluorescence methods. Moreover, we show that NMR techniques, especially STD-NMR, can provide more atomic-level binding geometry information. The higher STD effect of the smaller aromatic ring of RhB implies that this aromatic ring is closer to the surface of NPs when binding to polystyrene NPs.
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Affiliation(s)
- Hui Xu
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Leah Beck Casabianca
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
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Kim JH, Zakia M, Kim JH, Park SS, Yoon J, Huh P, Yoo SII. Clustered assembly of Au nanoparticles from spherical diblock copolymer micelles encapsulating Au nanoparticle. J Appl Polym Sci 2017. [DOI: 10.1002/app.44693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jang Hwan Kim
- Department of Polymer Engineering; Pukyong National University; 365 Sinseon-ro, Nam-gu Busan 608-739 Korea
| | - Maulida Zakia
- Department of Polymer Engineering; Pukyong National University; 365 Sinseon-ro, Nam-gu Busan 608-739 Korea
| | - Joo Hyun Kim
- Department of Polymer Engineering; Pukyong National University; 365 Sinseon-ro, Nam-gu Busan 608-739 Korea
| | - Seong Soo Park
- Department of Industrial Chemistry; Pukyong National University; 365 Sinseon-ro, Nam-gu Busan 608-739 Korea
| | - Jinhwan Yoon
- Department of Chemistry; Dong-A University; Nakdong-Daero 550beon-gil, Saha-gu Busan 604-714 Korea
| | - PilHo Huh
- Department of Polymer Science and Engineering; Pusan National University; Busan 609-735 Korea
| | - Seong II Yoo
- Department of Polymer Engineering; Pukyong National University; 365 Sinseon-ro, Nam-gu Busan 608-739 Korea
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Daza EA, Misra SK, Scott J, Tripathi I, Promisel C, Sharma BK, Topczewski J, Chaudhuri S, Pan D. Multi-Shell Nano-CarboScavengers for Petroleum Spill Remediation. Sci Rep 2017; 7:41880. [PMID: 28157204 PMCID: PMC5291094 DOI: 10.1038/srep41880] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 12/28/2016] [Indexed: 12/18/2022] Open
Abstract
Increasingly frequent petroleum contamination in water bodies continues to threaten our ecosystem, which lacks efficient and safe remediation tactics both on macro and nanoscales. Current nanomaterial and dispersant remediation methods neglect to investigate their adverse environmental and biological impact, which can lead to a synergistic chemical imbalance. In response to this rising threat, a highly efficient, environmentally friendly and biocompatible nano-dispersant has been developed comprising a multi-shelled nanoparticle termed 'Nano-CarboScavengers' (NCS) with native properties for facile recovery via booms and mesh tools. NCS treated different forms of petroleum oil (raw and distillate form) with considerable efficiency (80% and 91%, respectively) utilizing sequestration and dispersion abilities in tandem with a ~10:1 (oil: NCS; w/w) loading capacity. In extreme contrast with chemical dispersants, the NCS was found to be remarkably benign in in vitro and in vivo assays. Additionally, the carbonaceous nature of NCS broke down by human myeloperoxidase and horseradish peroxidase enzymes, revealing that incidental biological uptake can enzymatically digest the sugar based core.
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Affiliation(s)
- Enrique A. Daza
- Department of Bioengineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
- Carle Foundation Hospital, Urbana, Illinois, 61801, USA
| | - Santosh K. Misra
- Department of Bioengineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
- Carle Foundation Hospital, Urbana, Illinois, 61801, USA
| | - John Scott
- Illinois Sustainable Technology Center, Prairie Research Institute, University of Illinois at Urbana Champaign, Champaign, Illinois, 61820, USA
| | - Indu Tripathi
- Department of Bioengineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
- Carle Foundation Hospital, Urbana, Illinois, 61801, USA
| | - Christine Promisel
- Department of Bioengineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
| | - Brajendra K. Sharma
- Illinois Sustainable Technology Center, Prairie Research Institute, University of Illinois at Urbana Champaign, Champaign, Illinois, 61820, USA
| | - Jacek Topczewski
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Stanley Manne Children’s Research Institute, Chicago, Illinois 60611, USA
| | | | - Dipanjan Pan
- Department of Bioengineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
- Carle Foundation Hospital, Urbana, Illinois, 61801, USA
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