1
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Bahetihan H, Ma L, Kong W. The mechanism underlying the transitions between stripes, helices, and stacked toroids in the cylindrical shell formed by AB diblock copolymers on a long nanocylinder. Phys Chem Chem Phys 2024; 26:13480-13488. [PMID: 38651195 DOI: 10.1039/d4cp00371c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
The self-assembly of block copolymers on nanocylinders has attracted a lot of interest due to its potential application in biomedicine and other fields. In this study, the self-assembly phase behavior of AB diblock copolymers on long nanocylinders in soft confinement has been studied by using a simulated annealing method. A square phase diagram of the morphology was constructed by increasing the number of chains of copolymers (cn) and the cylindrical diameter (D). As a result, morphological transitions from striped to helical and axially stacked toroids, as well as reversible transitions, started to appear. By analyzing the chain packing in a fan-shaped region and calculating the mean-square end-to-end distance (DEE2) of the copolymers and number of AB contacts, both types of transitions were found to be driven by the competition between conformational entropy and AB interfacial energy. The number of stripes increased and the helical angle decreased with the increase in cylinder diameter. The chirality of the helix was found to be random.
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Affiliation(s)
- Hajinuer Bahetihan
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China.
| | - Liangjun Ma
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China.
| | - Weixin Kong
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China.
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2
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Mastrocinque F, Bullard G, Alatis JA, Albro JA, Nayak A, Williams NX, Kumbhar A, Meikle H, Widel ZXW, Bai Y, Harvey AK, Atkin JM, Waldeck DH, Franklin AD, Therien MJ. Band gap opening of metallic single-walled carbon nanotubes via noncovalent symmetry breaking. Proc Natl Acad Sci U S A 2024; 121:e2317078121. [PMID: 38466848 PMCID: PMC10962935 DOI: 10.1073/pnas.2317078121] [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: 10/02/2023] [Accepted: 02/03/2024] [Indexed: 03/13/2024] Open
Abstract
Covalent bonding interactions determine the energy-momentum (E-k) dispersion (band structure) of solid-state materials. Here, we show that noncovalent interactions can modulate the E-k dispersion near the Fermi level of a low-dimensional nanoscale conductor. We demonstrate that low energy band gaps may be opened in metallic carbon nanotubes through polymer wrapping of the nanotube surface at fixed helical periodicity. Electronic spectral, chiro-optic, potentiometric, electronic device, and work function data corroborate that the magnitude of band gap opening depends on the nature of the polymer electronic structure. Polymer dewrapping reverses the conducting-to-semiconducting phase transition, restoring the native metallic carbon nanotube electronic structure. These results address a long-standing challenge to develop carbon nanotube electronic structures that are not realized through disruption of π conjugation, and establish a roadmap for designing and tuning specialized semiconductors that feature band gaps on the order of a few hundred meV.
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Affiliation(s)
| | - George Bullard
- Department of Chemistry, Duke University, Durham, NC27708
| | | | - Joseph A. Albro
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA15260
| | - Animesh Nayak
- Department of Chemistry, Duke University, Durham, NC27708
| | - Nicholas X. Williams
- Department of Electrical and Computer Engineering, Duke University, Durham, NC27708
| | - Amar Kumbhar
- Department of Chemistry, Chapel Hill Analytical and Nanofabrication Laboratory, University of North Carolina, Chapel Hill, NC27599
| | - Hope Meikle
- Department of Chemistry, Duke University, Durham, NC27708
- Department of Electrical and Computer Engineering, Duke University, Durham, NC27708
| | | | - Yusong Bai
- Department of Chemistry, Duke University, Durham, NC27708
| | - Alexis K. Harvey
- Department of Chemistry, University of North Carolina, Chapel Hill, NC27599
| | - Joanna M. Atkin
- Department of Chemistry, University of North Carolina, Chapel Hill, NC27599
| | - David H. Waldeck
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA15260
| | - Aaron D. Franklin
- Department of Chemistry, Duke University, Durham, NC27708
- Department of Electrical and Computer Engineering, Duke University, Durham, NC27708
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3
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Wang X, Tarahomi M, Sheibani R, Xia C, Wang W. Progresses in lignin, cellulose, starch, chitosan, chitin, alginate, and gum/carbon nanotube (nano)composites for environmental applications: A review. Int J Biol Macromol 2023; 241:124472. [PMID: 37076069 DOI: 10.1016/j.ijbiomac.2023.124472] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 04/04/2023] [Accepted: 04/12/2023] [Indexed: 04/21/2023]
Abstract
Water sources are becoming increasingly scarce, and they are contaminated by industrial, residential, and agricultural waste-derived organic and inorganic contaminants. These contaminants may pollute the air, water, and soil in addition to invading the ecosystem. Because carbon nanotubes (CNTs) can undergo surface modification, they can combine with other substances to create nanocomposites (NCs), including biopolymers, metal nanoparticles, proteins, and metal oxides. Furthermore, biopolymers are significant classes of organic materials that are widely used for various applications. They have drawn attention due to their benefits such as environmental friendliness, availability, biocompatibility, safety, etc. As a result, the synthesis of a composite made of CNT and biopolymers can be very effective for a variety of applications, especially those involving the environment. In this review, we reported environmental applications (including removal of dyes, nitro compounds, hazardous materialsو toxic ions, etc.) of composites made of CNT and biopolymers such as lignin, cellulose, starch, chitosan, chitin, alginate, and gum. Also, the effect of different factors such as the medium pH, the pollutant concentration, temperature, and contact time on the adsorption capacity (AC) and the catalytic activity of the composite in the reduction or degradation of various pollutants has been systematically explained.
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Affiliation(s)
- Xuan Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Mehrasa Tarahomi
- Amirkabir University of Technology-Mahshahr Campus, University St., Nahiyeh San'ati, Mahshahr, Khouzestan, Iran
| | - Reza Sheibani
- Amirkabir University of Technology-Mahshahr Campus, University St., Nahiyeh San'ati, Mahshahr, Khouzestan, Iran.
| | - Changlei Xia
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
| | - Weidong Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
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4
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Li Z, Chen W, Liu J, Jiang D. Can Linear Conjugated Polymers Form Stable Helical Structures on the Carbon Nanotubes? ACS APPLIED MATERIALS & INTERFACES 2022; 14:49189-49198. [PMID: 36260827 DOI: 10.1021/acsami.2c14771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The formation mechanism of ordered helical structures of conjugated polymers wrapping onto single-walled carbon nanotubes (SWCNTs) has been full of controversy in recent decades. A formation mechanism is proposed for the linear conjugated polymers wrapping around SWCNTs that the formation of helical structures is dependent on the orientation competition between backbone segments and side groups via transmission electron microscopy observations and molecular dynamics simulations. Results show that the conjugated polymers cannot always form stable helical structures, even if they have the capability to form a stable helix. In fact, only part of polymer segments presents a stable helix on the SWCNTs for the internal rotation in polymer deformations. Furthermore, a design framework is proposed to choose specific conjugated homopolymers and copolymers which can form helical structures on the SWCNTs.
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Affiliation(s)
- Zixi Li
- School of Materials, Sun Yat-sen University, No. 135, Xingang Xi Road, Guangzhou510275, P. R. China
| | - Wenduo Chen
- School of Materials, Sun Yat-sen University, No. 135, Xingang Xi Road, Guangzhou510275, P. R. China
| | - Jiayin Liu
- School of Materials, Sun Yat-sen University, No. 135, Xingang Xi Road, Guangzhou510275, P. R. China
| | - Dazhi Jiang
- School of Materials, Sun Yat-sen University, No. 135, Xingang Xi Road, Guangzhou510275, P. R. China
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5
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Su F, Zhang S, Chen Z, Zhang Z, Li Z, Lu S, Zhang M, Fang F, Kang S, Guo C, Su C, Yu X, Wang H, Li X. Precise Synthesis of Concentric Ring, Helicoid, and Ladder Metallo-Polymers with Chevron-Shaped Monomers. J Am Chem Soc 2022; 144:16559-16571. [PMID: 35998652 DOI: 10.1021/jacs.2c06251] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Molecular geometry represents one of the most important structural features and governs physical properties and functions of materials. Nature creates a wide array of substances with distinct geometries but similar chemical composition with superior efficiency and precision. However, it remains a formidable challenge to construct abiological macromolecules with various geometries based on identical repeating units, owing to the lack of corresponding synthetic approaches for precisely manipulating the connectivity between monomers and feasible techniques for characterizing macromolecules at the single-molecule level. Herein, we design and synthesize a series of tetratopic monomers with chevron stripe shape which serve as the key precursors to produce four distinct types of metallo-macromolecules with well-defined geometries, viz., the concentric hexagon, helicoid polymer, ladder polymer, and cross-linked polymer, via platinum-acetylide couplings. Concentric hexagon, helicoid, and ladder metallo-polymers are directly visualized by transmission electron microscopy, atomic force microscopy, and ultra-high-vacuum low-temperature scanning tunneling microscopy at the single-molecule level. Finally, single-walled carbon nanotubes (SWCNTs) are selected as the guest to investigate the structure-property relationship based on such macromolecules, among which the helicoid metallo-polymer shows high efficiency in wrapping SWCNTs with geometry-dependent selectivity.
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Affiliation(s)
- Feng Su
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China.,Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Shunran Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China.,Guangdong Provincial Key Laboratory of Distributed Energy Systems, Dongguan University of Technology, Dongguan, Guangdong 523106, China
| | - Zhi Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Zeyuan Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Zhikai Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Shuai Lu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Mingming Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Fang Fang
- Instrumental Analysis Center, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Shimin Kang
- Guangdong Provincial Key Laboratory of Distributed Energy Systems, Dongguan University of Technology, Dongguan, Guangdong 523106, China
| | - Chenxing Guo
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Chenliang Su
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Xiujun Yu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Heng Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Xiaopeng Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China.,Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen, Guangdong 518055, China
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6
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Rizvi A, Mulvey JT, Carpenter BP, Talosig R, Patterson JP. A Close Look at Molecular Self-Assembly with the Transmission Electron Microscope. Chem Rev 2021; 121:14232-14280. [PMID: 34329552 DOI: 10.1021/acs.chemrev.1c00189] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Molecular self-assembly is pervasive in the formation of living and synthetic materials. Knowledge gained from research into the principles of molecular self-assembly drives innovation in the biological, chemical, and materials sciences. Self-assembly processes span a wide range of temporal and spatial domains and are often unintuitive and complex. Studying such complex processes requires an arsenal of analytical and computational tools. Within this arsenal, the transmission electron microscope stands out for its unique ability to visualize and quantify self-assembly structures and processes. This review describes the contribution that the transmission electron microscope has made to the field of molecular self-assembly. An emphasis is placed on which TEM methods are applicable to different structures and processes and how TEM can be used in combination with other experimental or computational methods. Finally, we provide an outlook on the current challenges to, and opportunities for, increasing the impact that the transmission electron microscope can have on molecular self-assembly.
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Affiliation(s)
- Aoon Rizvi
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Justin T Mulvey
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Brooke P Carpenter
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Rain Talosig
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Joseph P Patterson
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
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7
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Ikai T, Kawabata S, Mamiya F, Taura D, Ousaka N, Yashima E. Helix-Sense-Selective Encapsulation of Helical Poly(lactic acid)s within a Helical Cavity of Syndiotactic Poly(methyl methacrylate) with Helicity Memory. J Am Chem Soc 2020; 142:21913-21925. [PMID: 33315394 DOI: 10.1021/jacs.0c11204] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We report a highly enantio- and helix-sense-selective encapsulation of helical poly(lactic acid)s (PLAs) through a unique "helix-in-helix" superstructure formation within the helical cavity of syndiotactic poly(methyl methacrylate) (st-PMMA) with a one-handed helicity memory, which enables the separation of the enantiomeric helices of the left (M)- and right (P)-handed-PLAs. The M- and P-helical PLAs with different molar masses and a narrow molar mass distribution were prepared by the ring-opening living polymerization of the optically pure l- and d-lactides, respectively, followed by end-capping of the terminal residues of the PLAs with a 4-halobenzoate and then a C60 unit, giving the C60-free and C60-bound M- and P-PLAs. The C60-free and C60-bound M- and P-PLAs formed crystalline inclusion complexes with achiral st-PMMA accompanied by a preferred-handed helix induction in the st-PMMA backbone, thereby producing helix-in-helix superstructures with the same-handedness to each other. The induced helical st-PMMAs were retained after replacement with the achiral C60, indicating the memory of the induced helicity of the st-PMMAs. Both the C60-free and C60-bound helical PLAs were enantio- and helix-sense selectively encapsulated into the helical hollow space of the optically active M- and P-st-PMMAs with the helicity memory prepared using chiral amines. The M- and P-PLAs are preferentially encapsulated within the M- and P-st-PMMA helical cavity with the same-handedness to each other, respectively, independent of the terminal units. The C60-bound PLAs were more efficiently and enantioselectively trapped in the st-PMMA compared to the C60-free PLAs. The enantioselectivities were highly dependent on the molar mass of the C60-bound and C60-free PLAs and significantly increased as the molar mass of the PLAs increased.
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Affiliation(s)
- Tomoyuki Ikai
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Satoshi Kawabata
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Fumihiko Mamiya
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Daisuke Taura
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.,Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Naoki Ousaka
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.,Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Eiji Yashima
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.,Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
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8
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Hinkle KR, Phelan FR. Solvation Free Energy of Self-Assembled Complexes: Using Molecular Dynamics to Understand the Separation of ssDNA-Wrapped Single-Walled Carbon Nanotubes. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2020; 124:10.1021/acs.jpcc.0c00983. [PMID: 34136061 PMCID: PMC8204635 DOI: 10.1021/acs.jpcc.0c00983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Molecular dynamics simulations were used to characterize the self-assembly of single-stranded DNA (ssDNA) on a (6,5) single-walled carbon nanotube (SWCNT) in aqueous solution for the purpose of gaining an improved theoretical understanding of separation strategies for SWCNTs using ssDNA as a dispersant. Four separate ssDNA sequences, ((TAT)4, TTA(TAT)2ATT, C12, (GTC)2GT), at various levels of loading, were chosen for study based on published experimental work showing selective extraction of particular SWCNT species based on the ssDNA dispersant sequence. We develop a unique workflow based on free energy perturbation (FEP) and use this to determine the relative solubility of these complexes due to the adsorption of the ssDNA on the SWCNT surface, and hence, rank the favorability of separations observed during experiments. Results qualitatively agree with experiments and indicate that the nucleobase sequence of the adsorbed ssDNA greatly affects the free energy of complex solvation which ultimately drives SWCNT separation. Further, to elucidate the underlying physics governing the ssDNA-SWCNT solubility rankings, we also present calculations for four structural characteristics of ssDNA adsorption. We demonstrate that a unique type of intra-strand hydrogen bonding is the most important factor contributing to the stability of the ssDNA-SWCNT complexes and show how these adsorption characteristics are coupled with the FEP results.
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Affiliation(s)
- Kevin R. Hinkle
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland
- Department of Chemical and Materials Engineering, University of Dayton, Dayton, OH
| | - Frederick R. Phelan
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland
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9
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Yue B, Yin L, Zhao W, Jia X, Zhu M, Wu B, Wu S, Zhu L. Chirality Transfer in Coassembled Organogels Enabling Wide-Range Naked-Eye Enantiodifferentiation. ACS NANO 2019; 13:12438-12444. [PMID: 31560190 DOI: 10.1021/acsnano.9b06250] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Enantiodifferentiation is crucial in organic chemistry, pharmacochemistry, material chemistry, and life science. However, it remains tremendously challenging to achieve a broad enantioselectivity to different types of chiral substrates via a single-material design. Here, we report a coassembled organogel strategy with chirality transfer to make an enantioselective generality possible. This coassembly contains two components: a chiral rigid molecular linker and an achiral block copolymer. Different from routine helically packed chiral self-assemblies, chirality transfer from the linker to the copolymer directed the coassembly to form a phase-segregated twisted nanofiber, in cooperation with H-bonding and microphase segregation. An organogel was accordingly formed by the further cross-linking in ethanol, where the rigid chiral linker served as the scaffold. On this basis, the system becomes highly sensitive, enabling a naked-eye sensing toward the single enantiomer of a diverse series of chiral species (including axial, point, planar, and polymeric chirality) via gel-to-micelle transformation, due to the asymmetric interaction hampering the chirality transfer in the coassembly and destroying the hierarchical structure. Such a strategy, based on a significant amplification of the stereoselective interactions, facilitates a simple and straightforward way to distinguish a broad optical activity independent of devices.
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Affiliation(s)
- Bingbing Yue
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
- Max-Planck-Institut für Polymerforschung , Ackermannweg 10 , Mainz 55128 , Germany
- College of Science , University of Shanghai for Science and Technology , No. 334 Jungong Road , Shanghai 200093 , China
| | - Liyuan Yin
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
| | - Wandong Zhao
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
| | - Xiaoyong Jia
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
- Henan Key Laboratory of Photovoltaic Materials , Henan University , Kaifeng 475004 , China
| | - Mingjie Zhu
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
| | - Bin Wu
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
| | - Si Wu
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
- Max-Planck-Institut für Polymerforschung , Ackermannweg 10 , Mainz 55128 , Germany
| | - Liangliang Zhu
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
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10
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Peng L, Hu Z, Tang Z, Jiao Y, Xu X. Recent progress in transition metal catalyzed cross coupling of nitroarenes. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.04.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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11
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Đorđević L, Marangoni T, Liu M, De Zorzi R, Geremia S, Minoia A, Lazzaroni R, Ishida Y, Bonifazi D. Templating Porphyrin Anisotropy via Magnetically Aligned Carbon Nanotubes. Chempluschem 2019; 84:1270-1278. [DOI: 10.1002/cplu.201800623] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Luka Đorđević
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Via L. Giorgieri 1 34127 Trieste Italy
| | - Tomas Marangoni
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Via L. Giorgieri 1 34127 Trieste Italy
| | - Mingjie Liu
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa, Wako Saitama 351-0198 Japan
| | - Rita De Zorzi
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Via L. Giorgieri 1 34127 Trieste Italy
| | - Silvano Geremia
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Via L. Giorgieri 1 34127 Trieste Italy
| | - Andrea Minoia
- Laboratory for Chemistry of Novel Materials, CIRMAPUniversité de Mons-UMONS Place du Parc 20 B-7000 Mons Belgium
| | - Roberto Lazzaroni
- Laboratory for Chemistry of Novel Materials, CIRMAPUniversité de Mons-UMONS Place du Parc 20 B-7000 Mons Belgium
| | - Yasuhiro Ishida
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa, Wako Saitama 351-0198 Japan
| | - Davide Bonifazi
- School of ChemistryCardiff University Park Place Main Building CF10 3AT United Kingdom
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12
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Abd El-Mageed AIA, Handayani M, Chen Z, Inose T, Ogawa T. Assignment of the Absolute-Handedness Chirality of Single-Walled Carbon Nanotubes Using Organic Molecule Supramolecular Structures. Chemistry 2019; 25:1941-1948. [PMID: 30395702 DOI: 10.1002/chem.201804832] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Indexed: 11/07/2022]
Abstract
Supramolecular structures of organic molecules on planar nanocarbon surfaces, such as highly oriented pyrolytic graphite (HOPG), have been extensively studied and the factors that control them are generally well-established. In contrast, the properties of supramolecular structures on curved nanocarbon surfaces like carbon nanotubes remain challenging to predict and/or to understand. This paper reports an investigation into the first study of the supramolecular structures of 5,15-bisdodecylporphyrin (C12P) on chiral, concentrated single-walled carbon nanotubes (SWNTs; with right-handed helix P- and left-handed helix M-) surfaces using STM. Furthermore, the study is the first of its kind to experimentally assign the absolute-handedness chirality of SWNTs, as well as to understand their effect on the supramolecular structures of organic molecules on their surfaces. Interestingly, these SWNT enantiomers resulted in supramolecular structures of opposite chirality based on the handedness chirality. With molecular modelling, we predicted the absolute-handedness chirality of SWNTs, before demonstrating this experimentally.
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Affiliation(s)
- Ahmed I A Abd El-Mageed
- Chemistry Department, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Chemistry Department, Faculty of Science, Minia University, Minia, 61519, Egypt
| | - Murni Handayani
- Chemistry Department, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Indonesian Institute of Sciences (LIPI), Research Center for Metallurgy and Materials, Tangerang Selatan, Banten, 15314, Indonesia
| | - Zhijin Chen
- Chemistry Department, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Tomoko Inose
- Chemistry Department, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Research Institute for Electronic Science, Hokkaido University, 20-10 Kita-ku Kita, Sapporo, Hokkaido 001-0020, Japan
| | - Takuji Ogawa
- Chemistry Department, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
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13
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He X, Zheng YW, Lei T, Liu WQ, Chen B, Feng K, Tung CH, Wu LZ. Photocatalytic hydrogen evolution of 1-tetralones to α-naphthols by continuous-flow technology. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00753a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photoredox platform for the dehydrogenation of 1-tetralones to α-naphthols is disclosed. Further improvement is achieved using the continuous-flow approach.
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Affiliation(s)
- Xu He
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry the Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
| | - Yi-Wen Zheng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry the Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry the Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Wen-Qiang Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry the Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry the Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
| | - Ke Feng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry the Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry the Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry the Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
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14
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Bai Y, Bullard G, Olivier JH, Therien MJ. Quantitative Evaluation of Optical Free Carrier Generation in Semiconducting Single-Walled Carbon Nanotubes. J Am Chem Soc 2018; 140:14619-14626. [PMID: 30289256 DOI: 10.1021/jacs.8b05598] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Gauging free carrier generation (FCG) in optically excited, charge-neutral single-walled carbon nanotubes (SWNTs) has important implications for SWNT-based optoelectronics that rely upon conversion of photons to electrical current. Earlier investigations have largely provided only qualitative insights into optically triggered SWNT FCG, due to the heterogeneous nature of commonly interrogated SWNT samples and the lack of direct, unambiguous spectroscopic signatures that could be used to quantify charges. Here, employing ultrafast pump-probe spectroscopy in conjunction with chirality-enriched, length-sorted, ionic-polymer-wrapped SWNTs, we develop a straightforward approach for quantitatively evaluating the extent of optically driven FCG in SWNTs. Owing to the previously identified trion transient absorptive hallmark (Tr+11 → Tr+nm) and the rapid nature of trion formation dynamics (<1 ps) relative to established free-carrier decay time scales (>ns), we correlate FCG with trion formation dynamics. Experimental determination of the trion absorptive cross section further enables evaluation of the quantum yields for optically driven FCG [Φ(E nn→h ++e -)] as a function of optical excitation energy and medium dielectric strength. We show that (i) E33 excitons give rise to dramatically enhanced Φ(E nn→h ++e -) relative to those derived from E22 and E11 excitons and (ii) Φ(E33→h ++e -) monotonically increases from ∼5% to 18% as the solvent dielectric constant increases from ∼32 to 80. This work highlights the extent to which the nature of the medium and excitation conditions control FCG quantum yields in SWNTs: such studies have the potential to provide new design insights for SWNT-based compositions for optoelectronic applications that include photodetectors and photovoltaics.
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Affiliation(s)
- Yusong Bai
- Department of Chemistry, French Family Science Center , Duke University , Durham , North Carolina 27708-0346 , United States
| | - George Bullard
- Department of Chemistry, French Family Science Center , Duke University , Durham , North Carolina 27708-0346 , United States
| | - Jean-Hubert Olivier
- Department of Chemistry, French Family Science Center , Duke University , Durham , North Carolina 27708-0346 , United States
| | - Michael J Therien
- Department of Chemistry, French Family Science Center , Duke University , Durham , North Carolina 27708-0346 , United States
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15
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He X, Velizhanin KA, Bullard G, Bai Y, Olivier JH, Hartmann NF, Gifford BJ, Kilina S, Tretiak S, Htoon H, Therien MJ, Doorn SK. Solvent- and Wavelength-Dependent Photoluminescence Relaxation Dynamics of Carbon Nanotube sp 3 Defect States. ACS NANO 2018; 12:8060-8070. [PMID: 29995379 DOI: 10.1021/acsnano.8b02909] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Photoluminescent sp3 defect states introduced to single wall carbon nanotubes (SWCNTs) through low-level covalent functionalization create new photophysical behaviors and functionality as a result of defect sites acting as exciton traps. Evaluation of relaxation dynamics in varying dielectric environments can aid in advancing a more complete description of defect-state relaxation pathways and electronic structure. Here, we exploit helical wrapping polymers as a route to suspending (6,5) SWCNTs covalently functionalized with 4-methoxybenzene in solvent systems including H2O, D2O, methanol, dimethylformamide, tetrahydrofuran, and toluene, spanning a range of dielectric constants from 80 to 3. Defect-state photoluminescence decays were measured as a function of emission wavelength and solvent environment. Emission decays are biexponential, with short lifetime components on the order of 65 ps and long components ranging from around 100 to 350 ps. Both short and long decay components increase as emission wavelength increases, while only the long lifetime component shows a solvent dependence. We demonstrate that the wavelength dependence is a consequence of thermal detrapping of defect-state excitons to produce mobile E11 excitons, providing an important mechanism for loss of defect-state population. Deeper trap states (i.e., those emitting at longer wavelengths) result in a decreased rate for thermal loss. The solvent-independent behavior of the short lifetime component is consistent with its assignment as the characteristic time for redistribution of exciton population between bright and dark defect states. The solvent dependence of the long lifetime component is shown to be consistent with relaxation via an electronic to vibrational energy transfer mechanism, in which energy is resonantly lost to solvent vibrations in a complementary mechanism to multiphonon decay processes.
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Affiliation(s)
- Xiaowei He
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Kirill A Velizhanin
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - George Bullard
- Department of Chemistry, French Family Science Center , Duke University , Durham , North Carolina 27708 , United States
| | - Yusong Bai
- Department of Chemistry, French Family Science Center , Duke University , Durham , North Carolina 27708 , United States
| | - Jean-Hubert Olivier
- Department of Chemistry, French Family Science Center , Duke University , Durham , North Carolina 27708 , United States
| | - Nicolai F Hartmann
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Brendan J Gifford
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
- Center for Nonlinear Sciences , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
- Department of Chemistry and Biochemistry , North Dakota State University , Fargo , North Dakota 58108 , United States
| | - Svetlana Kilina
- Department of Chemistry and Biochemistry , North Dakota State University , Fargo , North Dakota 58108 , United States
| | - Sergei Tretiak
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Han Htoon
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Michael J Therien
- Department of Chemistry, French Family Science Center , Duke University , Durham , North Carolina 27708 , United States
| | - Stephen K Doorn
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
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16
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Xiong W, Du L, Lo KC, Shi H, Takaya T, Iwata K, Chan WK, Phillips DL. Control of Electron Flow Direction in Photoexcited Cycloplatinated Complex Containing Conjugated Polymer-Single-Walled Carbon Nanotube Hybrids. J Phys Chem Lett 2018; 9:3819-3824. [PMID: 29940729 DOI: 10.1021/acs.jpclett.8b01713] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Conjugated polymers incorporated with cycloplatinated complexes (P1-Pt and P2-Pt) were used as dispersants for single-walled carbon nanotubes (SWCNTs). Significant changes in the UV-vis absorption spectra were observed after the formation of the polymer/SWCNT hybrids. Molecular dynamics (MD) simulations revealed the presence of a strong interaction between the cycloplatinated complex moieties and the SWCNT surface. The photoinduced electron transfer processes in these hybrids were strongly dependent on the type of the comonomer unit. Upon photoexcitation, the excited P1-Pt donates electrons to the SWCNT, while P2-Pt accepts electrons from the photoexcited SWCNT. These observations were supported by results from Raman and femtosecond time-resolved transient absorption spectroscopy experiments. The strong electronic interaction between the Pt complexes and the SWCNT gives rise to a new hybrid system that has a controllable photoinduced electron transfer flow, which are important in regulating the charge transport processes in SWCNT-based optoelectronic devices.
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Affiliation(s)
- Wenjuan Xiong
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China
| | - Lili Du
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China
| | - Kin Cheung Lo
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China
| | - Haiting Shi
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China
| | - Tomohisa Takaya
- Department of Chemistry, Faculty of Science , Gakushuin University , 1-5-1 Mejiro , Toshimaku, Tokyo 171-8588 , Japan
| | - Koichi Iwata
- Department of Chemistry, Faculty of Science , Gakushuin University , 1-5-1 Mejiro , Toshimaku, Tokyo 171-8588 , Japan
| | - Wai Kin Chan
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China
| | - David Lee Phillips
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China
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17
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Huth K, Glaeske M, Achazi K, Gordeev G, Kumar S, Arenal R, Sharma SK, Adeli M, Setaro A, Reich S, Haag R. Fluorescent Polymer-Single-Walled Carbon Nanotube Complexes with Charged and Noncharged Dendronized Perylene Bisimides for Bioimaging Studies. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800796. [PMID: 29870583 DOI: 10.1002/smll.201800796] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/20/2018] [Indexed: 05/28/2023]
Abstract
Fluorescent nanomaterials are expected to revolutionize medical diagnostic, imaging, and therapeutic tools due to their superior optical and structural properties. Their inefficient water solubility, cell permeability, biodistribution, and high toxicity, however, limit the full potential of their application. To overcome these obstacles, a water-soluble, fluorescent, cytocompatible polymer-single-walled carbon nanotube (SWNT) complex is introduced for bioimaging applications. The supramolecular complex consists of an alkylated polymer conjugated with neutral hydroxylated or charged sulfated dendronized perylene bisimides (PBIs) and SWNTs as a general immobilization platform. The polymer backbone solubilizes the SWNTs, decorates them with fluorescent PBIs, and strongly improves their cytocompatibility by wrapping around the SWNT scaffold. In photophysical measurements and biological in vitro studies, sulfated complexes exhibit superior optical properties, cellular uptake, and intracellular staining over their hydroxylated analogs. A toxicity assay confirms the highly improved cytocompatibility of the polymer-wrapped SWNTs toward surfactant-solubilized SWNTs. In microscopy studies the complexes allow for the direct imaging of the SWNTs' cellular uptake via the PBI and SWNT emission using the 1st and 2nd optical window for bioimaging. These findings render the polymer-SWNT complexes with nanometer size, dual fluorescence, multiple charges, and high cytocompatibility as valuable systems for a broad range of fluorescence bioimaging studies.
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Affiliation(s)
- Katharina Huth
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195, Berlin, Germany
| | - Mareen Glaeske
- Department of Physics, Freie Universität Berlin, 14195, Berlin, Germany
| | - Katharina Achazi
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195, Berlin, Germany
| | - Georgy Gordeev
- Department of Physics, Freie Universität Berlin, 14195, Berlin, Germany
| | - Shiv Kumar
- Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Raúl Arenal
- Institute of Nanoscience of Aragon (INA), Advanced Microscopy Laboratory (LMA), University of Zaragoza, 50018, Zaragoza, Spain
- Foundation ARAID, 50018, Zaragoza, Spain
| | - Sunil K Sharma
- Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Mohsen Adeli
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195, Berlin, Germany
- Department of Chemistry, Faculty of Science, Lorestan University, Khorram Abad, 68151-44316, Iran
| | - Antonio Setaro
- Department of Physics, Freie Universität Berlin, 14195, Berlin, Germany
| | - Stephanie Reich
- Department of Physics, Freie Universität Berlin, 14195, Berlin, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195, Berlin, Germany
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18
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Nirmalraj P, Dos Santos MC, Salazar Rios JM, Davila D, Vargas F, Scherf U, Loi MA. Polymer-Nanocarbon Topological and Electronic Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:6225-6230. [PMID: 29733657 DOI: 10.1021/acs.langmuir.8b00485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The electronic structure of semiconducting carbon nanotubes selected through polymer functionalization is routinely verified by measuring the spectral van Hove singularity signature under ultraclean vacuum conditions. Interpreting the effect of unperturbed polymer adsorption on the nanotube energetic bands in solvent media is experimentally challenging owing to solvent molecular crowding around the hybrid complex. Here, a liquid-based scanning tunneling microscope and spectroscope operating in a noise-free laboratory is used to resolve the polymer-semiconducting carbon-nanotube-underlying graphene heterostructure in the presence of encompassing solvent molecules. The spectroscopic measurements highlight the role of polymer packing and graphene landscape on the electronic shifts induced in the nanotube energy bands. Together with molecular dynamics simulations, our experimental findings emphasize the necessity of recording physicochemical and electronic properties of liquid-phase solubilized hybrid materials in their native state.
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Affiliation(s)
- Peter Nirmalraj
- IBM Research - Zurich , Säumerstrasse 4 , CH-8803 Rüschlikon , Switzerland
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , CH-1700 Fribourg , Switzerland
| | - Maria Cristina Dos Santos
- Photophysics and OptoElectronics, Zernike Institute of Advanced Materials , University of Groningen , Groningen 9747 , The Netherlands
| | - Jorge Mario Salazar Rios
- Photophysics and OptoElectronics, Zernike Institute of Advanced Materials , University of Groningen , Groningen 9747 , The Netherlands
| | - Diana Davila
- IBM Research - Zurich , Säumerstrasse 4 , CH-8803 Rüschlikon , Switzerland
| | - Fiorella Vargas
- IBM Research - Zurich , Säumerstrasse 4 , CH-8803 Rüschlikon , Switzerland
| | - Ullrich Scherf
- Macromolecular Chemistry , Bergische Universität Wuppertal , Gauss-Str. 20 , D-42119 Wuppertal , Germany
| | - Maria Antonietta Loi
- Photophysics and OptoElectronics, Zernike Institute of Advanced Materials , University of Groningen , Groningen 9747 , The Netherlands
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19
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Morisue M, Omagari S, Ueno I, Nakanishi T, Hasegawa Y, Yamamoto S, Matsui J, Sasaki S, Hikima T, Sakurai S. Fully Conjugated Porphyrin Glass: Collective Light-Harvesting Antenna for Near-Infrared Fluorescence beyond 1 μm. ACS OMEGA 2018; 3:4466-4474. [PMID: 30023894 PMCID: PMC6044875 DOI: 10.1021/acsomega.8b00566] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Accepted: 04/18/2018] [Indexed: 06/08/2023]
Abstract
Expanded π-systems with a narrow highest occupied molecular orbital-lowest unoccupied molecular orbital band gap encounter deactivation of excitons due to the "energy gap law" and undesired aggregation. This dilemma generally thwarts the near-infrared (NIR) luminescence of organic π-systems. A sophisticated cofacially stacked π-system is known to involve exponentially tailed disorder, which displays exceptionally red-shifted fluorescence even as only a marginal emission component. Enhancement of the tail-state fluorescence might be advantageous to achieve NIR photoluminescence with an expected collective light-harvesting antenna effect as follows: (i) efficient light-harvesting capacity due to intense electronic absorption, (ii) a long-distance exciton migration into the tail state based on a high spatial density of the chromophore site, and (iii) substantial transmission of NIR emission to circumvent the inner filter effect. Suppression of aggregation-induced quenching of fluorescence could realize collective light-harvesting antenna for NIR-luminescence materials. This study discloses an enhanced tail-state NIR fluorescence of a self-standing porphyrin film at 1138 nm with a moderate quantum efficiency based on a fully π-conjugated porphyrin that adopts an amorphous form, called "porphyrin glass".
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Affiliation(s)
- Mitsuhiko Morisue
- Faculty
of Molecular Chemistry and Engineering and Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Shun Omagari
- Graduate
School of Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo 060-8628, Japan
| | - Ikuya Ueno
- Faculty
of Molecular Chemistry and Engineering and Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Takayuki Nakanishi
- Graduate
School of Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo 060-8628, Japan
| | - Yasuchika Hasegawa
- Graduate
School of Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo 060-8628, Japan
| | - Shunsuke Yamamoto
- Institute
of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Jun Matsui
- Department
of Science, Yamagata University, Kojirakawa-cho, Yamagata 990-8560, Japan
| | - Sono Sasaki
- Faculty
of Molecular Chemistry and Engineering and Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Takaaki Hikima
- RIKEN SPring-8
Center, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Shinichi Sakurai
- Faculty
of Molecular Chemistry and Engineering and Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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20
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Han Y, Cai C, Lin J, Gong S, Xu W, Hu R. Self-Assembly of Rod-Coil Block Copolymers on Carbon Nanotubes: A Route toward Diverse Surface Nanostructures. Macromol Rapid Commun 2018; 39:e1800080. [PMID: 29656527 DOI: 10.1002/marc.201800080] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/02/2018] [Indexed: 12/31/2022]
Abstract
In this work, it is reported that poly(γ-benzyl-l-glutamate)-block-poly(ethylene glycol) (PBLG-b-PEG) rod-coil block copolymers (BCPs) can disperse carbon nanotubes (CNTs) in solution and form various surface nanostructures on the CNTs via solution self-assembly. In an organic solvent that dissolves the BCPs, the PBLG rod blocks adsorb on CNT surfaces, and the BCPs form conformal coatings. Then, by the introduction of water, a selective solvent for PEG blocks, the BCPs in the coatings further self-assemble into diverse surface nanostructures, such as helices (left-handed or right-handed), gyros, spheres, and rings. The morphology of the surface nanostructure can be tailored by initial organic solvent composition, preparation temperature, feeding ratio of BCPs to CNTs, degree of polymerization of PBLG blocks, and diameter of the CNTs.
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Affiliation(s)
- Yang Han
- Shanghai Key Laboratory of Advanced Polymeric Materials, State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Chunhua Cai
- Shanghai Key Laboratory of Advanced Polymeric Materials, State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jiaping Lin
- Shanghai Key Laboratory of Advanced Polymeric Materials, State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Shuting Gong
- Shanghai Key Laboratory of Advanced Polymeric Materials, State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Wenheng Xu
- Shanghai Key Laboratory of Advanced Polymeric Materials, State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Rui Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials, State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
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21
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Polymer-wrapped single-walled carbon nanotubes: a transformation toward better applications in healthcare. Drug Deliv Transl Res 2018; 9:578-594. [DOI: 10.1007/s13346-018-0505-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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22
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Jagadeesan G, Chandramalar IM, Karunakaran J, Gopinath S, Mohanakrishnan AK. Crystal structure of dimethyl 1-oxo-2,4-di-phenyl-1,2-dihydronaphthalene-2,3-di-carboxyl-ate. ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS 2018; 74:349-351. [PMID: 29765721 PMCID: PMC5947801 DOI: 10.1107/s2056989018002360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Accepted: 02/09/2018] [Indexed: 11/10/2022]
Abstract
In the title compound, C26H20O5, a 1,2-di-hydro-naphthalene derivative, the cyclo-hexa-1,3-diene ring of the 1,2-di-hydro-naphthalene ring system adopts a half-chair conformation. The mean plane of the 1,2-di-hydro-napthalene ring system makes dihedral angles of 86.23 (6) and 64.80 (7)° with two phenyl rings. The carbonyl O atom attached to the di-hydro-naphthalene ring system deviates from the mean plane of the 1,2-di-hydro-naphthalene ring system by 0.618 (1) Å. In the crystal, the mol-ecules are linked into layers parallel to the bc plane via two kinds of C-H⋯O inter-actions, one of which forms a C(10) chain motif running along the c-axis direction and the other forms an R22(6) ring motif. Adjacent layers are further connected by C-H⋯π and offset π-π inter-actions [centroid-centroid distance = 3.6318 (9) Å].
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Affiliation(s)
- Gajendran Jagadeesan
- Department of Physics, Jeppiaar Engineering College, Jeppiaar Nagar, OMR, Chennai 600 119, India
| | | | | | - Solaiappan Gopinath
- Department of Physics, RKM Vivekananda College (Autonomous), Chennai 600 004, India
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23
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Lee AA, Kostinski SV, Brenner MP. Controlling Polyelectrolyte Adsorption onto Carbon Nanotubes by Tuning Ion-Image Interactions. J Phys Chem B 2018; 122:1545-1550. [PMID: 29338265 DOI: 10.1021/acs.jpcb.7b11398] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Understanding and controlling polyelectrolyte adsorption onto carbon nanotubes is a fundamental challenge in nanotechnology. Polyelectrolytes have been shown to stabilize nanotube suspensions through adsorbing onto the nanotube surface, and polyelectrolyte-coated nanotubes are emerging as building blocks for complex and addressable self-assembly. Conventional wisdom suggests that polyelectrolyte adsorption onto nanotubes is driven by specific chemical or van der Waals interactions. We develop a simple mean-field model and show that ion-image attraction significantly effects adsorption onto conducting nanotubes at low salt concentrations. Our theory suggests a simple strategy to selectively and reversibly functionalize carbon nanotubes on the basis of their electronic structures, which in turn modify the ion-image attraction.
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Affiliation(s)
- Alpha A Lee
- Cavendish Laboratory, University of Cambridge , Cambridge CB3 0HE, United Kingdom
| | - Sarah V Kostinski
- School of Engineering and Applied Sciences, Harvard University , Cambridge, Massachusetts 02138, United States
| | - Michael P Brenner
- School of Engineering and Applied Sciences, Harvard University , Cambridge, Massachusetts 02138, United States
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24
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Dynamics of charged excitons in electronically and morphologically homogeneous single-walled carbon nanotubes. Proc Natl Acad Sci U S A 2018; 115:674-679. [PMID: 29311334 DOI: 10.1073/pnas.1712971115] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The trion, a three-body charge-exciton bound state, offers unique opportunities to simultaneously manipulate charge, spin, and excitation in one-dimensional single-walled carbon nanotubes (SWNTs) at room temperature. Effective exploitation of trion quasi-particles requires fundamental insight into their creation and decay dynamics. Such knowledge, however, remains elusive for SWNT trion states, due to the electronic and morphological heterogeneity of commonly interrogated SWNT samples, and the fact that transient spectroscopic signals uniquely associated with the trion state have not been identified. Here, we prepare length-sorted SWNTs and precisely control charge-carrier-doping densities to determine trion dynamics using femtosecond pump-probe spectroscopy. Identification of the trion transient absorptive hallmark enables us to demonstrate that trions (i) derive from a precursor excitonic state, (ii) are produced via migration of excitons to stationary hole-polaron sites, and (iii) decay in a first-order manner. Importantly, under appropriate carrier-doping densities, exciton-to-trion conversion in SWNTs can approach 100% at ambient temperature. Our findings open up possibilities for exploiting trions in SWNT optoelectronics, ranging from photovoltaics and photodetectors to spintronics.
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25
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Delport G, Orcin-Chaix L, Campidelli S, Voisin C, Lauret JS. Controlling the kinetics of the non-covalent functionalization of carbon nanotubes using sub-cmc dilutions in a co-surfactant environment. NANOSCALE 2017; 9:2646-2651. [PMID: 28155947 DOI: 10.1039/c6nr08942a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We investigate the origin of the slow kinetics of functionalization processes in micellar environments. We show that the ionic nature of the surfactants used to solubilize small molecules and nano-objects plays a central role in the slowness of the kinetics. In order to solve this issue, we have developed an innovative method that we apply to the hybrid compound porphyrin molecule/carbon nanotube. We use two ionic surfactants to solubilize the molecules and the nanotubes respectively. Passing the molecule suspension below the cmc allows circumventing the stability of the ionic surfactant while keeping the benefit of working with highly concentrated solutions. This method allows fine control of the functionalization reaction and tuning of the kinetics characteristic time over more than two orders of magnitude.
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Affiliation(s)
- Géraud Delport
- Laboratoire Aimé Cotton, CNRS, Univ. Paris-Sud, ENS Cachan, Université Paris-Saclay, 91405 Orsay Cedex, France.
| | - Lucile Orcin-Chaix
- Laboratoire Aimé Cotton, CNRS, Univ. Paris-Sud, ENS Cachan, Université Paris-Saclay, 91405 Orsay Cedex, France. and LICSEN, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Stéphane Campidelli
- LICSEN, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Christophe Voisin
- Laboratoire Pierre Aigrain, Ecole Normale Supérieure, CNRS, UPMC, Université Paris Diderot, Paris, France
| | - Jean-Sébastien Lauret
- Laboratoire Aimé Cotton, CNRS, Univ. Paris-Sud, ENS Cachan, Université Paris-Saclay, 91405 Orsay Cedex, France.
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26
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Zhu J, Hersam MC. Assembly and Electronic Applications of Colloidal Nanomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1603895. [PMID: 27862354 DOI: 10.1002/adma.201603895] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 09/01/2016] [Indexed: 06/06/2023]
Abstract
Artificial solids and thin films assembled from colloidal nanomaterials give rise to versatile properties that can be exploited in a range of technologies. In particular, solution-based processes allow for the large-scale and low-cost production of nanoelectronics on rigid or mechanically flexible substrates. To achieve this goal, several processing steps require careful consideration, including nanomaterial synthesis or exfoliation, purification, separation, assembly, hybrid integration, and device testing. Using a ubiquitous electronic device - the field-effect transistor - as a platform, colloidal nanomaterials in three electronic material categories are reviewed systematically: semiconductors, conductors, and dielectrics. The resulting comparative analysis reveals promising opportunities and remaining challenges for colloidal nanomaterials in electronic applications, thereby providing a roadmap for future research and development.
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Affiliation(s)
- Jian Zhu
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois, 60208-3108, USA
| | - Mark C Hersam
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois, 60208-3108, USA
- Graduate Program in Applied Physics, Department of Chemistry, Department of Medicine, Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL, 60208-3108, USA
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27
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Yashima E, Ousaka N, Taura D, Shimomura K, Ikai T, Maeda K. Supramolecular Helical Systems: Helical Assemblies of Small Molecules, Foldamers, and Polymers with Chiral Amplification and Their Functions. Chem Rev 2016; 116:13752-13990. [PMID: 27754649 DOI: 10.1021/acs.chemrev.6b00354] [Citation(s) in RCA: 1198] [Impact Index Per Article: 149.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this review, we describe the recent advances in supramolecular helical assemblies formed from chiral and achiral small molecules, oligomers (foldamers), and helical and nonhelical polymers from the viewpoints of their formations with unique chiral phenomena, such as amplification of chirality during the dynamic helically assembled processes, properties, and specific functionalities, some of which have not been observed in or achieved by biological systems. In addition, a brief historical overview of the helical assemblies of small molecules and remarkable progress in the synthesis of single-stranded and multistranded helical foldamers and polymers, their properties, structures, and functions, mainly since 2009, will also be described.
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Affiliation(s)
- Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Naoki Ousaka
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Daisuke Taura
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Kouhei Shimomura
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Tomoyuki Ikai
- Graduate School of Natural Science and Technology, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
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28
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Min SH, Kim HI, Kim KS, Cha I, Ha S, Yun WS, Kwak SK, Kim JH, Kim BS, Song C. Selective dispersion of single-walled carbon nanotubes by binaphthyl-based conjugated polymers: Integrated experimental and simulation approach. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.04.063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Wu X, Xu L, Ma W, Liu L, Kuang H, Kotov NA, Xu C. Propeller-Like Nanorod-Upconversion Nanoparticle Assemblies with Intense Chiroptical Activity and Luminescence Enhancement in Aqueous Phase. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:5907-15. [PMID: 27158947 DOI: 10.1002/adma.201601261] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/05/2016] [Indexed: 05/23/2023]
Abstract
Propeller-like nanoscale assemblies with exceptionally intense chiroptical activity and strong luminescence are prepared using gold nanorods and upconversion nanoparticles. The circular dichroism intensity of the tetramer reached 80.9 mdeg, with g-factor value of 2.1 × 10(-2) . The enhancement factor of upconversion luminescence is as high as 21.3 in aqueous phase. Attomolar bioanalysis of a cancer biomarker with two model is also achieved, showing potential for early disease diagnosis and environmental monitoring.
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Affiliation(s)
- Xiaoling Wu
- State Key Lab of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Liguang Xu
- State Key Lab of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Wei Ma
- State Key Lab of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Liqiang Liu
- State Key Lab of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Hua Kuang
- State Key Lab of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Nicholas A Kotov
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109-2136, USA
| | - Chuanlai Xu
- State Key Lab of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
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30
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Magg M, Kadria-Vili Y, Oulevey P, Weisman RB, Bürgi T. Resonance Raman Optical Activity Spectra of Single-Walled Carbon Nanotube Enantiomers. J Phys Chem Lett 2016; 7:221-225. [PMID: 26709444 DOI: 10.1021/acs.jpclett.5b02612] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present experimental Raman optical activity (ROA) spectra of enantio-enriched single-walled carbon nanotubes (SWCNTs). Enantiomeric samples of (6,5) SWCNTs were prepared using nonlinear density gradient ultracentrifugation (DGU). Upon excitation at 2.33 eV, remarkably strong G-band signals are obtained due to strong resonance enhancement with the E22(S) transition of (6,5) SWCNTs. Enhancement allows measuring the vibrational optical activity (VOA) at unusually low concentrations. The obtained results are in good agreement with the single-excited-state theory (SES). To our knowledge, these are the first experimental VOA spectra of SWCNTs.
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Affiliation(s)
- Martin Magg
- Département de chimie physique, Université de Genève , Quai Ernest-Ansermet, CH-1211 Genève 4, Suisse
| | - Yara Kadria-Vili
- Department of Chemistry, Rice University , 6100 Main Street, Houston, Texas 77005, United States
| | - Patric Oulevey
- Département de chimie physique, Université de Genève , Quai Ernest-Ansermet, CH-1211 Genève 4, Suisse
| | - R Bruce Weisman
- Department of Chemistry, Rice University , 6100 Main Street, Houston, Texas 77005, United States
| | - Thomas Bürgi
- Département de chimie physique, Université de Genève , Quai Ernest-Ansermet, CH-1211 Genève 4, Suisse
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31
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Depotter G, Olivier JH, Glesner MG, Deria P, Bai Y, Bullard G, Kumbhar AS, Therien MJ, Clays K. First-order hyperpolarizabilities of chiral, polymer-wrapped single-walled carbon nanotubes. Chem Commun (Camb) 2016; 52:12206-12209. [DOI: 10.1039/c6cc06190g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Manipulation of polymer electronic structure provides a new means to modulate the first-order hyperpolarizabilities (βHRS values) of chiral, individualized polymer-wrapped single-walled carbon nanotube superstructures at a telecommunication-relevant wavelength (1280 nm).
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Affiliation(s)
- Griet Depotter
- Department of Chemistry
- University of Leuven
- B-3001 Leuven
- Belgium
| | | | - Mary G. Glesner
- Department of Chemistry
- French Family Science Center
- Duke University
- Durham
- USA
| | - Pravas Deria
- Department of Chemistry
- French Family Science Center
- Duke University
- Durham
- USA
| | - Yusong Bai
- Department of Chemistry
- French Family Science Center
- Duke University
- Durham
- USA
| | - George Bullard
- Department of Chemistry
- French Family Science Center
- Duke University
- Durham
- USA
| | - Amar S. Kumbhar
- Chapel Hill Analytical & Nanofabrication Laboratory
- University of North Carolina at Chapel Hill
- Chapel Hill
- USA
| | - Michael J. Therien
- Department of Chemistry
- French Family Science Center
- Duke University
- Durham
- USA
| | - Koen Clays
- Department of Chemistry
- University of Leuven
- B-3001 Leuven
- Belgium
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Jia L, Petretic A, Molev G, Guerin G, Manners I, Winnik MA. Hierarchical Polymer-Carbon Nanotube Hybrid Mesostructures by Crystallization-Driven Self-Assembly. ACS NANO 2015; 9:10673-10685. [PMID: 26418346 DOI: 10.1021/acsnano.5b01176] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Multistep crystallization-driven self-assembly has great potential to enable the construction of sophisticated hybrid mesostructures. During the assembly procedure, each step modifies the properties of the overall structure. Here, we demonstrate the flexibility and efficiency of this approach by preparing polymer-carbon nanotube (CNT) hybrid mesostructures. We started by growing polyferrocenyldimethylsilane (PFS) homopolymer crystals onto multiwalled CNTs. This first step facilitated the redispersion of the coated CNTs in both polar (2-propanol) and nonpolar (decane) solvents. In the second step of hybrid construction, a unimer solution of a PFS block copolymer was added into the PFS-CNT solution. The PFS coating on the CNT initiated the growth of elongated micelles, resulting in structures that resembled hairy caterpillars. PFS-b-P2VP (P2VP = poly-2-vinylpyridine) micelles were grown from the surface of PFS-CNT hybrids in 2-propanol, and PFS-b-PI (PI = polyisoprene) micelles were grown from these hybrids in decane. These micelles, by transmission electron microscopy were seen to have an unusual wavy kinked structure, very different from the uniform smooth structures normally formed by both block copolymers. For hybrids with PFS-b-PI micelles, cross-linking of the micelle coronas locked the whole structure in place and allowed us to use the partial oxidation of PFS components to grow metal nanoparticles in the core of these micelles. We finally investigated the influence of the corona-forming block used to grow the micelles on the wettability of films made from these mesostructures. Films formed with CNT hybrids grafted with PFS-b-PI micelles were superhydrophobic (contact angle, 152°). In contrast, the surface of the films was much more hydrophilic (contact angle, 54°) when they were prepared from CNT hybrids grafted with PFS-b-P2VP micelles.
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Affiliation(s)
- Lin Jia
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Amy Petretic
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Gregory Molev
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Gerald Guerin
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Ian Manners
- School of Chemistry, University of Bristol , Bristol, U.K. BS8 1TS
| | - Mitchell A Winnik
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, ON M5S 3H6, Canada
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33
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Investigation of the adsorption of polymer chains on amine-functionalized double-walled carbon nanotubes. J Mol Model 2015; 21:312. [PMID: 26584817 DOI: 10.1007/s00894-015-2858-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 11/08/2015] [Indexed: 10/22/2022]
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34
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Wang HS, Wei JP. Emerging enantiomeric resolution materials with homochiral nano-fabrications. NANOSCALE 2015; 7:11815-11832. [PMID: 26119977 DOI: 10.1039/c5nr03048j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The major scientific challenge of enantiomeric separation is to develop simple, rapid, and sensitive routine analytical methods. Generally, enantio-resolution is still based on "three-point interaction" theory, which indicates that homochiral sites are needed for enantio-selective interaction. However, in recent years, advanced materials with precise homochiral fabrication at the nanoscale have been synthesized, and have shown great potential in development of high-throughput enantio-resolution methods. This tutorial review summarizes fabrication and applications of homochiral materials for enantio-selective recognition and separation. These materials, which include intrinsic and restructured chiral metal surfaces, plasmonic nanostructures, coordination polymers, organic polymer sensors, and molecularly imprinted polymers, have been applied as sensors or chiral stationary phases (CSPs) for efficient enantio-resolution.
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Affiliation(s)
- Huai-Song Wang
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, 210009, China.
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35
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36
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Ezzeddine A, Chen Z, Schanze KS, Khashab NM. Surface Modification of Multiwalled Carbon Nanotubes with Cationic Conjugated Polyelectrolytes: Fundamental Interactions and Intercalation into Conductive Poly(methyl methacrylate) Composites. ACS APPLIED MATERIALS & INTERFACES 2015; 7:12903-12913. [PMID: 26001041 DOI: 10.1021/acsami.5b02540] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This research investigates the modification and dispersion and of pristine multiwalled carbon nanotubes (MWCNTs) through a simple solution mixing technique based on noncovalent interactions between poly(phenylene ethynylene)-based conjugated polyelectrolytes functionalized with cationic imidazolium solubilizing groups (PIM-2 and PIM-4) and MWCNTs. Spectroscopic studies demonstrated the ability of PIMs to strongly interact with and efficiently disperse MWCNTs in different solvents, mainly due to π interactions between the PIMs and the MWCNTs. Transmission electron microscopy and atomic force microscopy revealed the coating of the polyelectrolytes on the walls of the nanotubes. Scanning electron microscopy (SEM) studies confirm the homogeneous dispersion of PIM-modified MWCNTs in the poly(methyl methacrylate) (PMMA) matrix. The addition of 1 wt % PIM-modified MWCNTs to the matrix has led to a significant decrease in DC resistivity of the composite (13 orders of magnitude). The increase in electrical conductivity and the improvement in the thermal and mechanical properties of the membranes containing the PIM-modified MWCNTs is ascribed to the formation of MWCNT networks and cross-linking sites that provided channels for the electrons to move in throughout the matrix and reinforced the interface between MWCNTs and PMMA.
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Affiliation(s)
- Alaa Ezzeddine
- †Smart Hybrid Materials (SHMs) Lab, Advanced Membranes and Porous Materials (AMPM) Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Zhuo Chen
- †Smart Hybrid Materials (SHMs) Lab, Advanced Membranes and Porous Materials (AMPM) Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
- ‡ Department of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Kirk S Schanze
- ‡ Department of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Niveen M Khashab
- †Smart Hybrid Materials (SHMs) Lab, Advanced Membranes and Porous Materials (AMPM) Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
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Olivier JH, Park J, Deria P, Rawson J, Bai Y, Kumbhar AS, Therien MJ. Unambiguous Diagnosis of Photoinduced Charge Carrier Signatures in a Stoichiometrically Controlled Semiconducting Polymer-Wrapped Carbon Nanotube Assembly. Angew Chem Int Ed Engl 2015; 54:8133-8. [PMID: 26014277 DOI: 10.1002/anie.201501364] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Indexed: 11/11/2022]
Abstract
Single-walled carbon nanotube (SWNT)-based nanohybrid compositions based on (6,5) chirality-enriched SWNTs ([(6,5) SWNTs]) and a chiral n-type polymer (S-PBN(b)-Ph4 PDI) that exploits a perylenediimide (PDI)-containing repeat unit are reported; S-PBN(b)-Ph4 PDI-[(6,5) SWNT] superstructures feature a PDI electron acceptor unit positioned at 3 nm intervals along the nanotube surface, thus controlling rigorously SWNT-electron acceptor stoichiometry and organization. Potentiometric studies and redox-titration experiments determine driving forces for photoinduced charge separation (CS) and thermal charge recombination (CR) reactions, as well as spectroscopic signatures of SWNT hole polaron and PDI radical anion (PDI(-.) ) states. Time-resolved pump-probe spectroscopic studies demonstrate that S-PBN(b)-Ph4 PDI-[(6,5) SWNT] electronic excitation generates PDI(-.) via a photoinduced CS reaction (τCS ≈0.4 ps, ΦCS ≈0.97). These experiments highlight the concomitant rise and decay of transient absorption spectroscopic signatures characteristic of the SWNT hole polaron and PDI(-.) states. Multiwavelength global analysis of these data provide two charge-recombination time constants (τCR ≈31.8 and 250 ps) that likely reflect CR dynamics involving both an intimately associated SWNT hole polaron and PDI(-.) charge-separated state, and a related charge-separated state involving PDI(-.) and a hole polaron site produced via hole migration along the SWNT backbone that occurs over this timescale.
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Affiliation(s)
- Jean-Hubert Olivier
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/
| | - Jaehong Park
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/,Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA 19104-6323 (USA)
| | - Pravas Deria
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/
| | - Jeff Rawson
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/
| | - Yusong Bai
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/
| | - Amar S Kumbhar
- Chapel Hill Analytical & Nanofabrication Laboratory, University of North Carolina at Chapel Hill, 243 Chapman Hall, NC 27599 (USA)
| | - Michael J Therien
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/.
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38
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Olivier J, Park J, Deria P, Rawson J, Bai Y, Kumbhar AS, Therien MJ. Unambiguous Diagnosis of Photoinduced Charge Carrier Signatures in a Stoichiometrically Controlled Semiconducting Polymer‐Wrapped Carbon Nanotube Assembly. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501364] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jean‐Hubert Olivier
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/
| | - Jaehong Park
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA 19104‐6323 (USA)
| | - Pravas Deria
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/
| | - Jeff Rawson
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/
| | - Yusong Bai
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/
| | - Amar S. Kumbhar
- Chapel Hill Analytical & Nanofabrication Laboratory, University of North Carolina at Chapel Hill, 243 Chapman Hall, NC 27599 (USA)
| | - Michael J. Therien
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, Durham, NC 27708 (USA) http://www.chem.duke.edu/∼mt83/
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39
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Susumu K, Therien MJ. Design of diethynyl porphyrin derivatives with high near infrared fluorescence quantum yields. J PORPHYR PHTHALOCYA 2015. [DOI: 10.1142/s1088424614501107] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A design strategy for (porphinato)zinc-based fluorophores that possess large near infrared fluorescence quantum yields is described. These fluorophores are based on a (5,15-diethynylporphinato)zinc(II) framework and feature symmetric donor or acceptor units appended at the meso-ethynyl positions via benzo[c][1,2,5]thiadiazole moieties. These (5,15-bis(benzo[c][1′,2′,5′]thiadiazol-4′-ylethynyl)-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (4), (5,15-bis[4′-(N,N-dihexylamino) benzo[c][1′,2′,5′]thiadiazol-7′-ylethynyl]-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (5), (5,15-bis([7′-(4″-n-dodecyloxyphenylethynyl)benzo[c][1′,2′,5′]thiadiazol-4′-yl]ethynyl)-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (6), (5,15-bis([7′-([7″-(4″ ′-n-dodecyloxyphenyl)benzo[c][1″,2″,5″]thiadiazol-4″-yl]ethynyl)benzo[c][1′,2′,5′]thiadiazol-4′-yl]ethynyl)-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (7), 5,15-bis ([7′-(4″-N,N-dihexylaminophenylethynyl)benzo[c][1′,2′,5′]thiadiazol-4′-yl]ethynyl)-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (8), and (5,15-bis([7′-(4″-N,N-dihexylaminophenylethenyl)benzo[c][1′,2′,5′]thiadiazol-4′-yl]ethynyl)-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (9) chromophores possess red-shifted absorption and emission bands that range between 650 and 750 nm that bear distinct similarities to those of the chlorophylls and structurally related molecules. Interestingly, the measured radiative decay rate constants for these emitters track with the integrated oscillator strengths of their respective x-polarized Q-band absorptions, and thus define an unusual family of high quantum yield near infrared fluorophores in which emission intensity is governed by a simple Strickler–Berg dependence.
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Affiliation(s)
- Kimihiro Susumu
- Department of Chemistry, 231 South 34th Street, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Michael J. Therien
- Department of Chemistry, French Family Science Center, 124 Science Drive, Duke University, Durham, NC 27708-0346, USA
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Peng L, Xu F, Shinohara K, Nishida T, Wakamatsu K, Orita A, Otera J. Remarkable electron-withdrawing effect of the Ph2P(O)-ethynyl group: Ph2P(O)-ethynyl-substituted aryl halides and copper acetylides for tailor-made Sonogashira couplings. Org Chem Front 2015. [DOI: 10.1039/c4qo00325j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ph2P(O)-ethynylphenyl bromide showed higher reactivity in Sonogashira couplings than phenylethynylphenyl bromide because of the electron-withdrawing nature of the Ph2P(O) group.
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Affiliation(s)
- Lifen Peng
- Department of Applied Chemistry
- Okayama University of Science
- Okayama 700-0005
- Japan
| | - Feng Xu
- Department of Applied Chemistry
- Okayama University of Science
- Okayama 700-0005
- Japan
| | - Kenta Shinohara
- Department of Applied Chemistry
- Okayama University of Science
- Okayama 700-0005
- Japan
| | - Takanori Nishida
- Department of Applied Chemistry
- Okayama University of Science
- Okayama 700-0005
- Japan
| | - Kan Wakamatsu
- Department of Chemistry
- Okayama University of Science
- Okayama 700-0005
- Japan
| | - Akihiro Orita
- Department of Applied Chemistry
- Okayama University of Science
- Okayama 700-0005
- Japan
| | - Junzo Otera
- Department of Applied Chemistry
- Okayama University of Science
- Okayama 700-0005
- Japan
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Gao J, Huang Y, Lian Y. Selective extraction of metallic arc-discharged single-walled carbon nanotubes by a water soluble polymethylsilane derivative. RSC Adv 2015. [DOI: 10.1039/c5ra17761h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Arc-discharged metallic SWNTs are selectively extracted with an aqueous solution of polymethyl(1-undecylic acidyl)silane by the formation of a charge donor–acceptor complex.
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Affiliation(s)
- Jinling Gao
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
| | - Yao Huang
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
| | - Yongfu Lian
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
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42
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Xu F, Peng L, Shinohara K, Morita T, Yoshida S, Hosoya T, Orita A, Otera J. Substituted 5,6,11,12-Tetradehydrodibenzo[a,e]cyclooctenes: Syntheses, Properties, and DFT Studies of Substituted Sondheimer–Wong Diynes. J Org Chem 2014; 79:11592-608. [DOI: 10.1021/jo502248p] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Feng Xu
- Department
of Applied Chemistry, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Lifen Peng
- Department
of Applied Chemistry, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Kenta Shinohara
- Department
of Applied Chemistry, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Takamoto Morita
- Laboratory
of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Suguru Yoshida
- Laboratory
of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Takamitsu Hosoya
- Laboratory
of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Akihiro Orita
- Department
of Applied Chemistry, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Junzo Otera
- Department
of Applied Chemistry, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
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Shea MJ, Mehlenbacher RD, Zanni MT, Arnold MS. Experimental Measurement of the Binding Configuration and Coverage of Chirality-Sorting Polyfluorenes on Carbon Nanotubes. J Phys Chem Lett 2014; 5:3742-9. [PMID: 26278744 DOI: 10.1021/jz5017813] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Poly(9,9-dioctylfluorene-2,7-diyl) (PFO) exhibits exceptional (n,m) chirality and electronic-type selectivity for near-armchair semiconducting carbon nanotubes. To better understand and control the factors governing this behavior, we experimentally determine the surface coverage and binding configuration of PFO on nanotubes in solution using photoluminescence energy transfer and anisotropy measurements. The coverage increases with PFO concentration in solution, following Langmuir-isotherm adsorption behavior with cooperativity. The equilibrium binding constant (PFO concentration in solution at half coverage), KA, depends on (n,m) and is 1.16 ± 0.30, 0.93 ± 0.12, and 1.13 ± 0.26 mg mL(-1) for the highly selected (7,5), (8,6), and (8,7) species, respectively, and the corresponding PFO wrapping angle at low coverage is 12, 17, and 14 ± 2°, respectively. In contrast, the inferred KA for metallic nanotubes is nearly an order of magnitude greater, indicating that the semiconducting selectivity increases with decreasing PFO concentration. This understanding will quantitatively guide future experimental and computational efforts on electronic type-sorting carbon nanotubes.
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Budhathoki-Uprety J, Jena PV, Roxbury D, Heller DA. Helical polycarbodiimide cloaking of carbon nanotubes enables inter-nanotube exciton energy transfer modulation. J Am Chem Soc 2014; 136:15545-50. [PMID: 25343218 PMCID: PMC4227803 DOI: 10.1021/ja505529n] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Indexed: 01/18/2023]
Abstract
The use of single-walled carbon nanotubes (SWCNTs) as near-infrared optical probes and sensors require the ability to simultaneously modulate nanotube fluorescence and functionally derivatize the nanotube surface using noncovalent methods. We synthesized a small library of polycarbodiimides to noncovalently encapsulate SWCNTs with a diverse set of functional coatings, enabling their suspension in aqueous solution. These polymers, known to adopt helical conformations, exhibited ordered surface coverage on the nanotubes and allowed systematic modulation of nanotube optical properties, producing up to 12-fold differences in photoluminescence efficiency. Polymer cloaking of the fluorescent nanotubes facilitated the first instance of controllable and reversible internanotube exciton energy transfer, allowing kinetic measurements of dynamic self-assembly and disassembly.
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Affiliation(s)
| | - Prakrit V. Jena
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
| | - Daniel Roxbury
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
| | - Daniel A. Heller
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Weill
Cornell Medical College, New York, New York 10065, United States
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Mohri S, Ohisa S, Tsumuki T, Yonezawa N, Okamoto A. Crystal structure of 1-(2-fluoro-benzo-yl)-2,7-di-meth-oxy-naphthalene. Acta Crystallogr Sect E Struct Rep Online 2014; 70:278-80. [PMID: 25484722 PMCID: PMC4257270 DOI: 10.1107/s1600536814020807] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 09/16/2014] [Indexed: 05/12/2024]
Abstract
The asymmetric unit of the compound, C19H15FO3, contains two independent molecules. Each molecule has essentially the same feature of non-coplanarly accumulated aromatic rings whereby the aroyl group at the 1-position of the naphthalene ring system is twisted almost perpendicularly to the ring system [dihedral angles of 86.52 (8) and 89.66 (8)°]. In the crystal structure, mol-ecules of the same conformer are stacked into columns parallel to the a axis by van der Waals inter-actions only.
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Affiliation(s)
- Saki Mohri
- Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture & Technology (TUAT), Koganei, Tokyo 184-8588 , Japan
| | - Shinji Ohisa
- Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture & Technology (TUAT), Koganei, Tokyo 184-8588 , Japan
| | - Takehiro Tsumuki
- Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture & Technology (TUAT), Koganei, Tokyo 184-8588 , Japan
| | - Noriyuki Yonezawa
- Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture & Technology (TUAT), Koganei, Tokyo 184-8588 , Japan
| | - Akiko Okamoto
- Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture & Technology (TUAT), Koganei, Tokyo 184-8588 , Japan
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Deria P, Olivier JH, Park J, Therien MJ. Potentiometric, electronic, and transient absorptive spectroscopic properties of oxidized single-walled carbon nanotubes helically wrapped by ionic, semiconducting polymers in aqueous and organic media. J Am Chem Soc 2014; 136:14193-9. [PMID: 25211354 DOI: 10.1021/ja507457z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We report the first direct cyclic voltammetric determination of the valence and conduction band energy levels for noncovalently modified (6,5) chirality enriched SWNTs [(6,5) SWNTs] in which an aryleneethynylene polymer monolayer helically wraps the nanotube surface at periodic and constant morphology. Potentiometric properties as well as the steady-state and transient absorption spectroscopic signatures of oxidized (6,5) SWNTs were probed as a function of the electronic structure of the aryleneethynylene polymer that helically wraps the nanotube surface, the solvent dielectric, and nanotube hole polaron concentration. These data: (i) highlight the utility of these polymer-SWNT superstructures in experiments that establish the potentiometric valence and conduction band energy levels of semiconducting carbon nanotubes; (ii) provide a direct measure of the (6,5) SWNT hole polaron delocalization length (2.75 nm); (iii) determine steady-state and transient electronic absorptive spectroscopic signatures that are uniquely associated with the (6,5) SWNT hole polaron state; and (iv) demonstrate that modulation of semiconducting polymer frontier orbital energy levels can drive spectral shifts of SWNT hole polaron transitions as well as regulate SWNT valence and conduction band energies.
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Affiliation(s)
- Pravas Deria
- Department of Chemistry, French Family Science Center, Duke University , 124 Science Drive, Durham, North Carolina 27708-0346, United States
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47
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Luo Y, Santos FA, Wagner TW, Tsoi E, Zhang S. Dynamic Interactions between Poly(3-hexylthiophene) and Single-Walled Carbon Nanotubes in Marginal Solvent. J Phys Chem B 2014; 118:6038-46. [DOI: 10.1021/jp503128v] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Yanqi Luo
- Department of Chemistry and
Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Franceska A. Santos
- Department of Chemistry and
Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Taylor W. Wagner
- Department of Chemistry and
Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Eric Tsoi
- Department of Chemistry and
Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Shanju Zhang
- Department of Chemistry and
Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
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48
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Park J, Deria P, Olivier JH, Therien MJ. Fluence-dependent singlet exciton dynamics in length-sorted chirality-enriched single-walled carbon nanotubes. NANO LETTERS 2014; 14:504-511. [PMID: 24329134 DOI: 10.1021/nl403511s] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We utilize individualized, length-sorted (6,5)-chirality enriched single-walled carbon nanotubes (SWNTs) having dimensions of 200 and 800 nm, femtosecond transient absorption spectroscopy, and variable excitation fluences that modulate the exciton density per nanotube unit length, to interrogate nanotube exciton/biexciton dynamics. For pump fluences below 30 μJ/cm(2), transient absorption (TA) spectra of (6,5) SWNTs reveal the instantaneous emergence of the exciton to biexciton transition (E11 → E11,BX) at 1100 nm; in contrast, under excitation fluences exceeding 100 μJ/cm(2), this TA signal manifests a rise time (τ rise ∼ 250 fs), indicating that E11 state repopulation is required to produce this signal. Femtosecond transient absorption spectroscopic data acquired over the 900-1400 nm spectral region of the near-infrared (NIR) region for (6,5) SWNTs, as a function of nanotube length and exciton density, reveal that over time delays that exceed 200 fs exciton-exciton interactions do not occur over spatial domains larger than 200 nm. Furthermore, the excitation fluence dependence of the E11 → E11,BX transient absorption signal demonstrates that relaxation of the E11 biexciton state (E11,BX) gives rise to a substantial E11 state population, as increasing delay times result in a concomitant increase of E11 → E11,BX transition oscillator strength. Numerical simulations based on a three-state model are consistent with a mechanism whereby biexcitons are generated at high excitation fluences via sequential SWNT ground- and E11-state excitation that occurs within the 980 nm excitation pulse duration. These studies that investigate fluence-dependent TA spectral evolution show that SWNT ground → E11 and E11 → E11,BX excitations are coresonant and provide evidence that E11,BX → E11 relaxation constitutes a significant decay channel for the SWNT biexciton state over delay times that exceed 200 fs, a finding that runs counter to assumptions made in previous analyses of SWNT biexciton dynamical data where exciton-exciton annihilation has been assumed to play a dominant role.
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Affiliation(s)
- Jaehong Park
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
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