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Sebastian S, Rohila Y, Yadav E, Bhardwaj P, Sudheer Babu Y, Maruthi M, Ansari A, Gupta MK. Supramolecular Organo/hydrogel-Fabricated Long Alkyl Chain α-Amidoamides as a Smart Soft Material for pH-Responsive Curcumin Release. Biomacromolecules 2024; 25:975-989. [PMID: 38189243 DOI: 10.1021/acs.biomac.3c01074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Low-molecular-mass gelators, due to their excellent biocompatibility, low toxicological profile, innate biodegradability and ease of fabrication have garnered significant interest as they self-assemble through non-covalent interactions. In this study, we have designed and synthesized a series of six α-amidoamides by varying the hydrophobic alkyl chain length (C12-C22), which were well characterized using different spectral techniques. These α-amidoamides formed self-assembled aggregates in a DMSO/water solvent system affording organo/hydrogels at 0.66% w/v, which is the minimum gelation concentration (MGC) making them as remarkable supergelators. The various functionalities present in these gelators such as amides and alkyl chain length pave the way toward excellent gelation mechanism through hydrogen bonding and van der Waals interaction as evidenced from FTIR spectroscopy. Notably, as the chain length increased, organo/hydrogels became more thermally stable. Rheological results showed that the stability and strength of these gelators were considerably impacted by variations in chain length. The SEM morphology revealed dense sheet architectures of the organo/hydrogel samples. Organo/hydrogels have a significant impact on the advancement of innovative drug delivery systems that respond to various stimuli, ushering in a new era in pharmaceutical technology. Inspired by this, we encapsulated curcumin, a chemopreventive medication, into the gel core and further released via gel-to-sol transition induced by pH variation at 37 °C, without any alteration in structure-activity relationship. The drug release behavior was observed by UV-vis spectroscopy. Moreover, cell viability and cell invasion experiments demonstrate that the gel formulations exhibit high biocompatibility and low cytotoxicity. Among the tested formulations, 5e+Cur exhibited remarkable efficacy in controlling A549 cell migration, suggesting significant potential for applications in the pharmaceutical industry.
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Affiliation(s)
- Sharol Sebastian
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India
| | - Yajat Rohila
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India
| | - Eqvinshi Yadav
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India
| | - Priya Bhardwaj
- Department of Biochemistry, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh 123031, Haryana,India
| | - Yangala Sudheer Babu
- Department of Biochemistry, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh 123031, Haryana,India
| | - Mulaka Maruthi
- Department of Biochemistry, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh 123031, Haryana,India
| | - Azaj Ansari
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India
| | - Manoj K Gupta
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India
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Dhamija A, Chandel D, Rath SP. Modulation of supramolecular chirality by stepwise axial coordination in a nano-size trizinc(ii)porphyrin trimer. Chem Sci 2023; 14:6032-6038. [PMID: 37293642 PMCID: PMC10246700 DOI: 10.1039/d3sc00858d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/09/2023] [Indexed: 06/10/2023] Open
Abstract
Herein, we report a chiral guest's triggered spring-like contraction and extension motions coupled with unidirectional twisting in a novel flexible and 'nano-size' achiral trizinc(ii)porphyrin trimer host upon step-wise formation of 1 : 1, 1 : 2, and 1 : 4 host-guest supramolecular complexes based on the stoichiometry of the diamine guests for the first time. During these processes, porphyrin CD responses have been induced, inverted, and amplified, and reduced, respectively, in a single molecular framework due to the change in the interporphyrin interactions and helicity. Also, the sign of the CD couplets is just the opposite between R and S substrates which suggests that the chirality is dictated solely by the stereographic projection of the chiral center. Interestingly, the long-range electronic communications between the three porphyrin rings generate trisignate CD signals that provide further information about molecular structures.
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Affiliation(s)
- Avinash Dhamija
- Department of Chemistry, Indian Institute of Technology Kanpur Kanpur-208016 India
| | - Dolly Chandel
- Department of Chemistry, Indian Institute of Technology Kanpur Kanpur-208016 India
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur Kanpur-208016 India
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3
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Maity D, Bhaumik SK, Banerjee S. Contrasting luminescence in heparin and DNA-templated co-assemblies of dimeric cyanostilbenes: efficient energy transfer in heparin-based co-assemblies. Phys Chem Chem Phys 2023; 25:12810-12819. [PMID: 37129214 DOI: 10.1039/d3cp00709j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Dimeric cationic cyanostilbenes with peripheral alkyl chains demonstrated aggregation in aqueous media depending on the length of the hydrophobic segment and produced luminescent spherical nano-assemblies in the case of long alkyl chain derivatives. In the presence of heparin, a bio-polyanion that is routinely used as an anticoagulant, the self-assembled structures obtained from the amphiphilic dimers showed the formation of higher-order structures whereas the non-assembling dimers exhibited heparin-induced supramolecular structure formation. In both cases, a significant enhancement in the emission was observed. This led to the detection of heparin in aqueous buffer, serum and plasma with a "turn-on" fluorescence response. Interestingly, these derivatives also exhibited luminescence variation in the presence of ctDNA. However, the response towards DNA was opposite to that observed in the case of heparin i.e., "turn-off'' fluorescence response. Notably, depending on the length of the alkyl segment, divergent DNA binding modes of these derivatives were observed. Due to their enhanced luminescence, the heparin-based co-assemblies were further explored as artificial light-harvesting systems exhibiting an efficient energy transfer process to embedded acceptor dyes with a high antenna effect.
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Affiliation(s)
- Dhananjoy Maity
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, India.
| | - Shubhra Kanti Bhaumik
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, India.
| | - Supratim Banerjee
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, India.
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4
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Chandel D, Pal C, Saha B, Asif Ikbal S, Rath SP. Induction and rationalization of supramolecular chirality in a highly flexible Zn(II)porphyrin dimer: structural, spectroscopic and theoretical investigations. Dalton Trans 2022; 51:14125-14137. [PMID: 36043507 DOI: 10.1039/d2dt01745h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly flexible pyrrole-bridged Zn(II)porphyrin dimer has been successfully utilized as an efficient host which enables an accurate determination of the absolute configuration directly for a large number of chiral amino alcohols and 1,2-diols. The addition of substrates resulted in the formation of 1 : 1 sandwich complexes which, after the addition of excess substrates, produced 1 : 2 host-guest complexes. In principle, the 1 : 2 host-guest complexes can be stabilized in three possible conformations, viz. exo-exo, exo-endo, and endo-endo based on how a substrate binds to the metal. The endo-endo conformation is stabilized by two strong interligand H-bonds [O-H⋯O(H)] between encapsulated diols which thereby interlock the stereochemistry. In the absence of such interligand H-bonding interactions, exo-endo binding is preferred as it is indeed observed for amino alcohols which show weaker CD couplets due to the free movement of substrates. The sandwich complexes with amino alcohols show a more intense CD couplet compared to the diols due to the stronger binding of the amine functionality (-NH2) towards a Zn-atom over an alcoholic moiety (-OH). The CD amplitude showed linear dependence with a binding constant for the 1 : 1 sandwich complex upon varying the substrates. Spectroscopic investigations, single crystal X-ray structure determination of four such host-guest complexes and DFT studies have enabled us to rationalize systematically the origin of optical activity unambiguously in the 1 : 1 and 1 : 2 host-guest complexes, which lead to an absolute stereochemical determination of a large number of chiral substrates. The larger vertical and horizontal flexibility of a diethyl pyrrole spacer induces stronger binding of the substrates to form the 1 : 1 complex with a much larger torsional angle along with intense CD couplets. In contrast, a rigid dibenzothiophene-bridged tweezer, due to its limited horizontal and vertical flexibility, facilitates 1 : 2 complexation more as compared to the highly flexible pyrrole-bridged host which results in stronger binding of the substrate with the intense CD couplet for the former.
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Affiliation(s)
- Dolly Chandel
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Chandrani Pal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Bapan Saha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Sk Asif Ikbal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
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5
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Takada T, Shimobaki N, Naruo M, Nakamura M, Yamana K. Photoresponsive porphyrin‐DNA complexes constructed through intercalation‐like binding. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tadao Takada
- University of Hyogo: Hyogo Kenritsu Daigaku Department of applied chemistry 2167 Shosha 671-2280 Himeji, Hyogo JAPAN
| | - Nao Shimobaki
- University of Hyogo: Hyogo Kenritsu Daigaku Department of applied chemistry JAPAN
| | - Moe Naruo
- University of Hyogo: Hyogo Kenritsu Daigaku Department of applied chemistry JAPAN
| | - Mitsunobu Nakamura
- University of Hyogo: Hyogo Kenritsu Daigaku Department of applied chemistry JAPAN
| | - Kazushige Yamana
- University of Hyogo: Hyogo Kenritsu Daigaku Department of applied chemistry JAPAN
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Li GW, Wang XJ, Lei X, Liu N, Wu ZQ. Self-assembly of Helical Polymers and Oligomers to Create Liquid Crystalline Alignment for Anisotropic NMR Parameters. Macromol Rapid Commun 2022; 43:e2100898. [PMID: 35076973 DOI: 10.1002/marc.202100898] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/22/2022] [Indexed: 11/07/2022]
Abstract
The measurement of anisotropic residual dipolar couplings (RDCs) parameters for the structure elucidation of organic molecules relies on suitable alignment media. Employment of self-assembled liquid crystalline systems to create anisotropic alignment can be an effective way to realize aligned samples and acquire RDCs. This Mini-review highlights the recent advances on amino acid-based helical polymers and supramolecular oligomers forming rigid, rod-like structures that aggregate into ordered liquid crystalline phases, including amino acid-based helical polyisocyanides, polyacetylenes, polypeptides, and oligopeptides assembled alignment media. The methodology for the determination of anisotropic liquid crystals was briefly discussed, and a summary of recent research progress in the enantiodifferentiation of helical polymers aligned media was followed. In addition, the self-assembled mechanism of oligopeptides and their RDCs structural analysis were also described. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Gao-Wei Li
- College of Chemistry and Chemical Engineering, and Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, Shangqiu Normal University, Shangqiu, Henan Province, 476000, China
| | - Xiao-Juan Wang
- College of Chemistry and Chemical Engineering, and Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, Shangqiu Normal University, Shangqiu, Henan Province, 476000, China
| | - Xinxiang Lei
- School of Pharmaceutical Sciences, South Central University for Nationalities, Wuhan, 430074, P. R. China
| | - Na Liu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, Anhui Province, 230009, China
| | - Zong-Quan Wu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin Province, 130012, China
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Ordóñez-Hernández J, Arcos-Ramos R, Alvarez-Venicio V, Basiuk VA, González-Antonio O, Flores-Álamo M, García-Ortega H, Farfán N, Carreón-Castro MDP. Engineering coumarin-BODIPY thin-films and molecular crystals: Tailoring supramolecular self-assembly for organic electronic applications. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Construction of Supramolecular Chirality in Polymer Systems: Chiral Induction, Transfer and Application. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2561-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Dhamija A, Mondal P, Saha B, Rath SP. Induction, control, and rationalization of supramolecular chirogenesis using metalloporphyrin tweezers: a structure-function correlation. Dalton Trans 2021; 49:10679-10700. [PMID: 32672295 DOI: 10.1039/d0dt01874k] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Supramolecular chirogenesis is one of the most rudimentary topics in the interdisciplinary sciences and essentially deals with various natural processes and innovative modern technologies. A comprehensive and rigorous understanding of such phenomenon is necessary to have a clear insight into the fundamental mechanisms and the various controlling factors, which would eventually lead to a range of practical applications of chiral supramolecular science. Metalloporphyrin tweezers have been extensively employed for such chirogenic processes due to their exciting physicochemical and tunable spectral properties, large stabilities, easily available synthetic protocols, and excellent abilities to form molecular assemblies. During the last few decades, various metalloporphyrin tweezers have been developed and considerably utilized by several research groups for assigning the absolute configuration to a variety of chiral diamines, conjugates of primary and secondary amines, amino alcohols, secondary alcohols, α-chiral carboxylic acids, etc. Our group has been at the forefront in trying to establish the structure-property correlation in this important area of interdisciplinary research. A brief account of our systematic investigation for understanding the underpinning mechanism of chirality induction and control at the molecular level over the last few years is presented in this Perspective article. The comprehensive understanding of such mechanistic details will be helpful in understanding various natural processes and designing modern technologies for various chirogenic functions in the fields of molecular sensors, nanotechnology, and supramolecular chemistry.
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Affiliation(s)
- Avinash Dhamija
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Pritam Mondal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Bapan Saha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
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10
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Lone MS, Bhat PA, Afzal S, Chat OA, Dar AA. Energy transduction through FRET in self-assembled soft nanostructures based on surfactants/polymers: current scenario and prospects. SOFT MATTER 2021; 17:425-446. [PMID: 33400748 DOI: 10.1039/d0sm01625j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The self-assembled systems of surfactants/polymers, which are capable of supporting energy funneling between fluorophores, have recently gained significant attraction. Surfactant and polymeric micelles form nanoscale structures spanning a radius of 2-10 nm are generally suitable for the transduction of energy among fluorophores. These systems have shown great potential in Förster resonance energy transfer (FRET) due to their unique characteristics of being aqueous based, tendency to remain self-assembled, spontaneous formation, tunable nature, and responsiveness to different external stimuli. This review presents current developments in the field of energy transfer, particularly the multi-step FRET processes in the self-assembled nanostructures of surfactants/polymers. The part one of this review presents a background and brief overview of soft systems and discusses certain aspects of the self-assemblies of surfactants/polymers and their co-solubilization property to bring fluorophores to close proximity to transduce energy. The second part of this review deals with single-step and multi-step FRET in the self-assemblies of surfactants/polymers and links FRET systems with advanced smart technologies including multicolor formation, data encryption, and artificial antenna systems. This review also discusses the diverse examples in the literature to present the emerging applications of FRET. Finally, the prospects regarding further improvement of FRET in self-assembled soft systems are outlined.
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Affiliation(s)
- Mohd Sajid Lone
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
| | - Parvaiz Ahmad Bhat
- Department of Chemistry, Government Degree College, Pulwama-192301, J&K, India.
| | - Saima Afzal
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
| | - Oyais Ahmad Chat
- Department of Chemistry, Government Degree College, Pulwama-192301, J&K, India.
| | - Aijaz Ahmad Dar
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
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11
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Kim S, Ahn DS, Ahn M, Wee KR, Choi J, Ihee H. Charge transfer induced by electronic state mixing in a symmetric X-Y-X-type multi-chromophore system. Phys Chem Chem Phys 2020; 22:28440-28447. [PMID: 33305764 DOI: 10.1039/d0cp05132b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Charge transfer (CT) from electron donor (D) to acceptor (A) plays an important role in photoelectric or electrochemical devices and is a useful concept for a molecule with D and A well distinguishable. Here, we report our finding that even in a molecule with D and A not resolvable, CT can be induced by electronic state mixing (ESM) in a symmetric multi-chromophore system (MCS), namely 1,4-di(1-pyrenyl)benzene (Py-Benz-Py). Unlike Py and Py-Benz, Py-Benz-Py exhibits unique photophysical properties attributable to the reduction of the energy gap between two electronic states induced by ESM. The ESM for Py-Benz-Py is due to the extended π-conjugation owing to the further introduction of Py into Py-Benz, and consequently leads to the favorable intramolecular CT, followed by the planarization due to the twisting motion between Py and phenyl moieties. Time-resolved spectroscopic data demonstrate that the twisting process of the Py moiety in acetonitrile occurs with two unequal time constants, suggesting the localized CT state and the asynchronous twisting dynamics of two Py moieties unlike the delocalized CT state in nonpolar and low-polarity solvents leading to the synchronous twisting of two Py moieties. This means that the symmetry-breaking CT in MCSs can induce an asynchronous twisting motion. The results reported here support that a molecule without CT can be turned into another molecule with CT induced by ESM and demonstrate that the excited-state relaxation dynamics can be regulated through the ESM induced by introducing the substituents or changing the environmental factors such as solvent polarities.
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Affiliation(s)
- Siin Kim
- Department of Chemistry and KI for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
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12
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Wu Q, Liao W, Wang X, Xiong Y, Tang H. Sole‐Component Visible Macrophotoinitiators with Si‐H: Decreased Oxygen Inhibition and Modified Cured Polymer Materials. ChemistrySelect 2020. [DOI: 10.1002/slct.202001069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Qingqing Wu
- Guizhou Provincial Key Laboratory of Computational Nano-Material Science Guizhou Education University Guiyang 550018 P. R. China
- Engineering Research Center of Organosilicon Compounds and Materials Ministry of Education College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
| | - Wen Liao
- Engineering Research Center of Organosilicon Compounds and Materials Ministry of Education College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
| | - Xiaoling Wang
- Engineering Research Center of Organosilicon Compounds and Materials Ministry of Education College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
| | - Ying Xiong
- Engineering Research Center of Organosilicon Compounds and Materials Ministry of Education College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
| | - Hongding Tang
- Engineering Research Center of Organosilicon Compounds and Materials Ministry of Education College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
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Cheng X, Miao T, Qian Y, Zhang Z, Zhang W, Zhu X. Supramolecular Chirality in Azobenzene-Containing Polymer System: Traditional Postpolymerization Self-Assembly Versus In Situ Supramolecular Self-Assembly Strategy. Int J Mol Sci 2020; 21:E6186. [PMID: 32867119 PMCID: PMC7503415 DOI: 10.3390/ijms21176186] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/22/2020] [Accepted: 07/31/2020] [Indexed: 02/03/2023] Open
Abstract
Recently, the design of novel supramolecular chiral materials has received a great deal of attention due to rapid developments in the fields of supramolecular chemistry and molecular self-assembly. Supramolecular chirality has been widely introduced to polymers containing photoresponsive azobenzene groups. On the one hand, supramolecular chiral structures of azobenzene-containing polymers (Azo-polymers) can be produced by nonsymmetric arrangement of Azo units through noncovalent interactions. On the other hand, the reversibility of the photoisomerization also allows for the control of the supramolecular organization of the Azo moieties within polymer structures. The construction of supramolecular chirality in Azo-polymeric self-assembled system is highly important for further developments in this field from both academic and practical points of view. The postpolymerization self-assembly strategy is one of the traditional strategies for mainly constructing supramolecular chirality in Azo-polymers. The in situ supramolecular self-assembly mediated by polymerization-induced self-assembly (PISA) is a facile one-pot approach for the construction of well-defined supramolecular chirality during polymerization process. In this review, we focus on a discussion of supramolecular chirality of Azo-polymer systems constructed by traditional postpolymerization self-assembly and PISA-mediated in situ supramolecular self-assembly. Furthermore, we will also summarize the basic concepts, seminal studies, recent trends, and perspectives in the constructions and applications of supramolecular chirality based on Azo-polymers with the hope to advance the development of supramolecular chirality in chemistry.
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Affiliation(s)
| | | | | | | | - Wei Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China; (X.C.); (T.M.); (Y.Q.); (Z.Z.); (X.Z.)
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14
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Saha B, Ikbal SA, Rath SP. Complexation of Chiral Zinc(II)Porphyrin Tweezer with Chiral Guests: Control, Discrimination and Rationalization of Supramolecular Chirality. Inorg Chem 2020; 59:7795-7809. [DOI: 10.1021/acs.inorgchem.0c00877] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Bapan Saha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Sk Asif Ikbal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
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15
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Aparin IO, Sergeeva OV, Mishin AS, Khaydukov EV, Korshun VA, Zatsepin TS. Excimer-FRET Cascade in Dual DNA Probes: Open Access to Large Stokes Shift, Enhanced Acceptor Light up, and Robust RNA Sensing. Anal Chem 2020; 92:7028-7036. [DOI: 10.1021/acs.analchem.0c00270] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Ilya O. Aparin
- Skolkovo Institute of Science and Technology, 143026 Skolkovo, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia
| | - Olga V. Sergeeva
- Skolkovo Institute of Science and Technology, 143026 Skolkovo, Russia
| | - Alexander S. Mishin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia
| | - Evgeny V. Khaydukov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia
- Federal Scientific Research Centre “Crystallography and Photonics” RAS, 119333 Moscow, Russia
- Sechenov First Moscow State Medical University, 119991 Moscow, Russia
| | - Vladimir A. Korshun
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia
- Gause Institute of New Antibiotics, 119021 Moscow, Russia
- Department of Biology and Biotechnology, National Research University Higher School of Economics, 117312 Moscow, Russia
| | - Timofei S. Zatsepin
- Skolkovo Institute of Science and Technology, 143026 Skolkovo, Russia
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119992 Moscow, Russia
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16
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Martín‐Gomis L, Díaz‐Puertas R, Seetharaman S, Karr PA, Fernández‐Lázaro F, D'Souza F, Sastre‐Santos Á. Distance Matters: Effect of the Spacer Length on the Photophysical Properties of Multimodular Perylenediimide–Silicon Phthalocyanine–Fullerene Triads. Chemistry 2020; 26:4822-4832. [DOI: 10.1002/chem.201905605] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Indexed: 01/26/2023]
Affiliation(s)
- Luis Martín‐Gomis
- División de Química Orgánica, Instituto de Bioingeniería Universidad Miguel Hernández Avda. de la Universidad s/n 03203 Elche Spain
| | - Rocío Díaz‐Puertas
- División de Química Orgánica, Instituto de Bioingeniería Universidad Miguel Hernández Avda. de la Universidad s/n 03203 Elche Spain
| | - Sairaman Seetharaman
- Department of Chemistry University of North Texas at Denton 1155 Union Circle, #305070 Denton TX 76203-5017 USA
| | - Paul A. Karr
- Department of Physical Sciences and Mathematics Wayne State College 1111 Main Street Wayne Nebraska 68787 USA
| | - Fernando Fernández‐Lázaro
- División de Química Orgánica, Instituto de Bioingeniería Universidad Miguel Hernández Avda. de la Universidad s/n 03203 Elche Spain
| | - Francis D'Souza
- Department of Chemistry University of North Texas at Denton 1155 Union Circle, #305070 Denton TX 76203-5017 USA
| | - Ángela Sastre‐Santos
- División de Química Orgánica, Instituto de Bioingeniería Universidad Miguel Hernández Avda. de la Universidad s/n 03203 Elche Spain
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17
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Ready Access to Molecular Rotors Based on Boron Dipyrromethene Dyes-Coumarin Dyads Featuring Broadband Absorption. MOLECULES (BASEL, SWITZERLAND) 2020; 25:molecules25040781. [PMID: 32059435 PMCID: PMC7070740 DOI: 10.3390/molecules25040781] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/06/2020] [Accepted: 02/08/2020] [Indexed: 01/01/2023]
Abstract
Herein we report on a straightforward access method for boron dipyrromethene dyes (BODIPYs)-coumarin hybrids linked through their respective 8- and 6- positions, with wide functionalization of the coumarin fragment, using salicylaldehyde as a versatile building block. The computationally-assisted photophysical study unveils broadband absorption upon proper functionalization of the coumarin, as well as the key role of the conformational freedom of the coumarin appended at the meso position of the BODIPY. Such free motion almost suppresses the fluorescence signal, but enables us to apply these dyads as molecular rotors to monitor the surrounding microviscosity.
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18
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Cyclic metalloporphyrin dimers: Conformational flexibility, applications and future prospects. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213117] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Dhamija A, Saha B, Chandel D, Malik H, Rath SP. Molecule to Supramolecule: Chirality Induction, Inversion, and Amplification in a Mg(II)porphyrin Dimer Templated by Chiral Diols. Inorg Chem 2019; 59:801-809. [DOI: 10.1021/acs.inorgchem.9b03062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Avinash Dhamija
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Bapan Saha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Dolly Chandel
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Himani Malik
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
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20
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Pathak P, Yao W, Hook KD, Vik R, Winnerdy FR, Brown JQ, Gibb BC, Pursell ZF, Phan AT, Jayawickramarajah J. Bright G-Quadruplex Nanostructures Functionalized with Porphyrin Lanterns. J Am Chem Soc 2019; 141:12582-12591. [PMID: 31322869 DOI: 10.1021/jacs.9b03250] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The intricate arrangement of numerous and closely placed chromophores on nanoscale scaffolds can lead to key photonic applications ranging from optical waveguides and antennas to signal-enhanced fluorescent sensors. In this regard, the self-assembly of dye-appended DNA sequences into programmed photonic architectures is promising. However, the dense packing of dyes can result in not only compromised DNA assembly (leading to ill-defined structures and precipitates) but also to essentially nonfluorescent systems (due to π-π aggregation). Here, we introduce a two-step "tether and mask" strategy wherein large porphyrin dyes are first attached to short G-quadruplex-forming sequences and then reacted with per-O-methylated β-cyclodextrin (PMβCD) caps, to form supramolecular synthons featuring the porphyrin fluor fixed into a masked porphyrin lantern (PL) state, due to intramolecular host-guest interactions in water. The PL-DNA sequences can then be self-assembled into cyclic architectures or unprecedented G-wires tethered with hundreds of porphyrin dyes. Importantly, despite the closely arrayed PL units (∼2 nm), the dyes behave as bright chromophores (up to 180-fold brighter than the analogues lacking the PMβCD masks). Since other self-assembling scaffolds, dyes, and host molecules can be used in this modular approach, this work lays out a general strategy for the bottom-up aqueous self-assembly of bright nanomaterials containing densely packed dyes.
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Affiliation(s)
- Pravin Pathak
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Wei Yao
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Katherine Delaney Hook
- Department of Biochemistry and Molecular Biology , Tulane University , New Orleans , Louisiana 70112 , United States
| | - Ryan Vik
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Fernaldo Richtia Winnerdy
- School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Jonathon Quincy Brown
- Department of Biomedical Engineering , Tulane University , New Orleans , Louisiana 70118 , United States
| | - Bruce C Gibb
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Zachary F Pursell
- Department of Biochemistry and Molecular Biology , Tulane University , New Orleans , Louisiana 70112 , United States
| | - Anh Tuân Phan
- School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Janarthanan Jayawickramarajah
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
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21
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Saha B, Petrovic AG, Dhamija A, Berova N, Rath SP. Complexation of Chiral Zinc(II) Porphyrin Tweezer with Achiral Aliphatic Diamines Revisited: Molecular Dynamics, Electronic CD, and 1H NMR Analysis. Inorg Chem 2019; 58:11420-11438. [DOI: 10.1021/acs.inorgchem.9b00962] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bapan Saha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Ana G. Petrovic
- Columbia University, Department of Chemistry, 3000 Broadway, New York, New York 10027, United States
- Department of Life Sciences, New York Institute of Technology, 1855 Broadway, New York, New York 10023, United States
| | - Avinash Dhamija
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Nina Berova
- Columbia University, Department of Chemistry, 3000 Broadway, New York, New York 10027, United States
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
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22
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Matsuo M, Kan Y, Kurihara K, Jimbo T, Imai M, Toyota T, Hirata Y, Suzuki K, Sugawara T. DNA Length-dependent Division of a Giant Vesicle-based Model Protocell. Sci Rep 2019; 9:6916. [PMID: 31061467 PMCID: PMC6502804 DOI: 10.1038/s41598-019-43367-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 04/23/2019] [Indexed: 02/07/2023] Open
Abstract
DNA is an essential carrier of sequence-based genetic information for all life today. However, the chemical and physical properties of DNA may also affect the structure and dynamics of a vesicle-based model protocell in which it is encapsulated. To test these effects, we constructed a polyethylene glycol-grafted giant vesicle system capable of undergoing growth and division. The system incorporates a specific interaction between DNA and lipophilic catalysts as well as components of PCR. We found that vesicle division depends on the length of the encapsulated DNA, and the self-assembly of an internal supramolecular catalyst possibly leads to the direct causal relationship between DNA length and the capacity of the vesicle to self-reproduce. These results may help elucidate how nucleic acids could have functioned in the division of prebiotic protocells.
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Affiliation(s)
- Muneyuki Matsuo
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo, 153-8902, Japan.,Department of Creative Research, Exploratory Research Center on Life and Living Systems (ExCELLS), Myodaiji, Okazaki, Aichi, 444-8787, Japan
| | - Yumi Kan
- Department of Physics, Graduate School of Science, Ochanomizu University, Otsuka, Bunkyo, Tokyo, 112-8610, Japan
| | - Kensuke Kurihara
- Department of Creative Research, Exploratory Research Center on Life and Living Systems (ExCELLS), Myodaiji, Okazaki, Aichi, 444-8787, Japan.,Determent of Life and Coordination-Complex Molecular Science, Biomolecular Functions, Institute for Molecular Science, Myodaiji, Okazaki, Aichi, 444-8585, Japan
| | - Takehiro Jimbo
- Department of Physics, Graduate School of Science, Tohoku University, Aoba, Sendai, Miyagi, 980-8578, Japan
| | - Masayuki Imai
- Department of Physics, Graduate School of Science, Ochanomizu University, Otsuka, Bunkyo, Tokyo, 112-8610, Japan.,Department of Physics, Graduate School of Science, Tohoku University, Aoba, Sendai, Miyagi, 980-8578, Japan
| | - Taro Toyota
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo, 153-8902, Japan. .,Universal Biology Institute, The University of Tokyo, Hongo, Bunkyo, Tokyo, 113-0033, Japan.
| | - Yuiko Hirata
- Department of Chemistry, Faculty of Science, Kanagawa University, Tsuchiya, Hiratsuka, Kanagawa, 259-1293, Japan
| | - Kentaro Suzuki
- Department of Chemistry, Faculty of Science, Kanagawa University, Tsuchiya, Hiratsuka, Kanagawa, 259-1293, Japan
| | - Tadashi Sugawara
- Department of Chemistry, Faculty of Science, Kanagawa University, Tsuchiya, Hiratsuka, Kanagawa, 259-1293, Japan.
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23
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Wang BL, Jiang C. DNA G-Quadruplexes as a Template To Direct Cyanine Dyes To Form H-Aggregates and Application of the Self-Assembly Entity as a New G-Quadruplexes Ligands Screening Platform. Anal Chem 2019; 91:1541-1547. [DOI: 10.1021/acs.analchem.8b04677] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Bo-Lin Wang
- College of Chemistry, Sichuan University, No. 29 Wangjiang Road, Chengdu 610064, China
| | - Chuang Jiang
- College of Chemistry, Sichuan University, No. 29 Wangjiang Road, Chengdu 610064, China
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24
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Chen H, Yin L, Liu M, Wang L, Fujiki M, Zhang W, Zhu X. Aggregation-induced chiroptical generation and photoinduced switching of achiral azobenzene-alt-fluorene copolymer endowed with left- and right-handed helical polysilanes. RSC Adv 2019; 9:4849-4856. [PMID: 35514644 PMCID: PMC9060682 DOI: 10.1039/c8ra09345h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 01/22/2019] [Indexed: 11/21/2022] Open
Abstract
The left and right helicities of azobenzene (Azo)-containing main-chain polymer (PF8Azo) were successfully controlled with an enantiomeric pair of rigid rod-like helical polysilanes carrying (S)- and (R)-2-methylbutyl groups (PSi-S and PSi-R, respectively) as their hetero-aggregates in a mixture of chloroform and methanol solvents and in the solid state. Optimizing the good and poor cosolvents and their volume fractions showed that the molar ratio of PF8Azo to PSi-S/-R and the molecular weight of PF8Azo were crucial to boost the CD amplitudes of PF8Azo/PSi-S and PF8Azo/PSi-R hetero-aggregates. The photoresponsive trans–cis transformation caused noticeable changes in the sign and magnitude of the chiroptical behavior due to the hetero-aggregates. Moreover, the optically active PF8Azo homo-aggregates were produced by complete photoscissoring reactions at 313 nm, which could be assigned to the Siσ–Siσ* transitions of PSi-S and PSi-R. The helicity of PF8Azo was successfully induced by UV-decomposable chiral polysilanes, and PF8Azo/PSi-S and PF8Azo/PSi-R hetero-aggregates were subjected to trans–cis photoisomerization.![]()
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Affiliation(s)
- Hailing Chen
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Lu Yin
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Meng Liu
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Laibing Wang
- Division of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
| | - Michiya Fujiki
- Division of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
| | - Wei Zhang
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Xiulin Zhu
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
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25
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Hinton DA, Ng JD, Sun J, Lee S, Saikin SK, Logsdon J, White DS, Marquard AN, Cavell AC, Krasecki VK, Knapper KA, Lupo KM, Wasielewski MR, Aspuru-Guzik A, Biteen JS, Gopalan P, Goldsmith RH. Mapping Forbidden Emission to Structure in Self-Assembled Organic Nanoparticles. J Am Chem Soc 2018; 140:15827-15841. [DOI: 10.1021/jacs.8b09149] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Daniel A. Hinton
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - James D. Ng
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - Jian Sun
- Department of Materials Science and Engineering, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
| | - Stephen Lee
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Semion K. Saikin
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
- Institute of Physics, Kazan Federal University, Kazan 420008, Russian Federation
| | - Jenna Logsdon
- Department of Chemistry and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - David S. White
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
- Department of Neuroscience, University of Wisconsin−Madison, 1111 Highland Avenue, Madison, Wisconsin 53705, United States
| | - Angela N. Marquard
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - Andrew C. Cavell
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - Veronica K. Krasecki
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - Kassandra A. Knapper
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - Katherine M. Lupo
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - Michael R. Wasielewski
- Department of Chemistry and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Alán Aspuru-Guzik
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
- Biologically-Inspired Solar Energy Program, Canadian Institute for Advanced Research (CIFAR), Toronto, Ontario M5S 1M1, Canada
- Department of Chemistry and Department of Computer Science, University of Toronto, Toronto, Ontario M5S 3H6, Canada
- Vector Institute for Artificial Intelligence, Toronto, Ontario M5S 1M1, Canada
| | - Julie S. Biteen
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Padma Gopalan
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
- Department of Materials Science and Engineering, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
| | - Randall H. Goldsmith
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
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26
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Sawaya NPD, Rappoport D, Tabor DP, Aspuru-Guzik A. Excitonics: A Set of Gates for Molecular Exciton Processing and Signaling. ACS NANO 2018; 12:6410-6420. [PMID: 29920202 DOI: 10.1021/acsnano.8b00584] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Regulating energy transfer pathways through materials is a central goal of nanotechnology, as a greater degree of control is crucial for developing sensing, spectroscopy, microscopy, and computing applications. Such control necessitates a toolbox of actuation methods that can direct energy transfer based on user input. Here we introduce a proposal for a molecular exciton gate, analogous to a traditional transistor, for regulating exciton flow in chromophoric systems. The gate may be activated with an input of light or an input flow of excitons. Our proposal relies on excitation migration via the second excited singlet (S2) state of the gate molecule. It exhibits the following features, only a subset of which are present in previous exciton switching schemes: picosecond time scale actuation, amplification/gain behavior, and a lack of molecular rearrangement. We demonstrate that the device can be used to produce universal binary logic or amplification of an exciton current, providing an excitonic platform with several potential uses, including signal processing for microscopy and spectroscopy methods that implement tunable exciton flux.
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Affiliation(s)
- Nicolas P D Sawaya
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , United States
- Intel Laboratories , Santa Clara , California 95054 , United States
| | - Dmitrij Rappoport
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Daniel P Tabor
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Alán Aspuru-Guzik
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , United States
- Senior Fellow, Canadian Institute for Advanced Research, Bioinspired Solar Energy Program , Toronto , ON M5G 1Z8 , Canada
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27
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Lewandowska U, Corra S, Zajaczkowski W, Ochs NAK, Shoshan MS, Tanabe J, Stappert S, Li C, Yashima E, Pisula W, Müllen K, Wennemers H. Positional Isomers of Chromophore-Peptide Conjugates Self-Assemble into Different Morphologies. Chemistry 2018; 24:12623-12629. [PMID: 29893493 DOI: 10.1002/chem.201801545] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 06/08/2018] [Indexed: 11/07/2022]
Abstract
Ordering π-systems into defined supramolecular structures is important for the development of organic functional materials. In recent years, peptides with defined secondary structures and/or self-assembly properties were introduced as powerful tools to order peptide-chromophore conjugates into different morphologies. This work explores whether or not the directionality of peptides can be used to control the self-assembly. The position of the π-system in conjugates between oligoprolines and perylene monoimide (PMI) chromophores was varied by attaching the PMI moiety to the second-to-last residue from the C- and N-termini, respectively. Microscopic and diffraction analysis revealed that the positional isomers form distinctly different supramolecular architectures that extend into the micrometer regime. NMR spectroscopic studies in solution phase allowed correlation of the self-assembly properties with markedly different conformational preferences of the isomeric building blocks. These insights enabled the design of building blocks with predictable self-assembly properties. Thus, the directionality of peptides offers exciting opportunities for controlling the self-assembly and electronic properties of π-systems.
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Affiliation(s)
- Urszula Lewandowska
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Stefano Corra
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | | | - Nellie A K Ochs
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Michal S Shoshan
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Junki Tanabe
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland.,Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Sebastian Stappert
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Chen Li
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Wojciech Pisula
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.,Department of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924, Lodz, Poland
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.,Institute of Physical Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Helma Wennemers
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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28
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Kisel KS, Eskelinen T, Zafar W, Solomatina AI, Hirva P, Grachova EV, Tunik SP, Koshevoy IO. Chromophore-Functionalized Phenanthro-diimine Ligands and Their Re(I) Complexes. Inorg Chem 2018; 57:6349-6361. [PMID: 29749736 PMCID: PMC6150663 DOI: 10.1021/acs.inorgchem.8b00422] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Indexed: 02/07/2023]
Abstract
A series of diimine ligands has been designed on the basis of 2-pyridyl-1 H-phenanthro[9,10- d]imidazole (L1, L2). Coupling the basic motif of L1 with anthracene-containing fragments affords the bichromophore compounds L3-L5, of which L4 and L5 adopt a donor-acceptor architecture. The latter allows intramolecular charge transfer with intense absorption bands in the visible spectrum (lowest λabs 464 nm (ε = 1.2 × 104 M-1 cm-1) and 490 nm (ε = 5.2 × 104 M-1 cm-1) in CH2Cl2 for L4 and L5, respectively). L1-L5 show strong fluorescence in a fluid medium (Φem = 22-92%, λem 370-602 nm in CH2Cl2); discernible emission solvatochromism is observed for L4 and L5. In addition, the presence of pyridyl (L1-L5) and dimethylaminophenyl (L5) groups enables reversible alteration of their optical properties by means of protonation. Ligands L1-L5 were used to synthesize the corresponding [Re(CO)3X(diimine)] (X = Cl, 1-5; X = CN, 1-CN) complexes. 1 and 2 exhibit unusual dual emission of singlet and triplet parentage, which originate from independently populated 1ππ* and 3MLCT excited states. In contrast to the majority of the reported Re(I) carbonyl luminophores, complexes 3-5 display moderately intense ligand-based fluorescence from an anthracene-containing secondary chromophore and complete quenching of emission from the 3MLCT state presumably due to the triplet-triplet energy transfer (3MLCT → 3ILCT).
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Affiliation(s)
- Kristina S. Kisel
- University of Eastern
Finland, Department of Chemistry, Joensuu 80101, Finland
- St.Petersburg State University, Department of Chemistry, Universitetskii pr. 26, 198504 St. Petersburg, Russia
| | - Toni Eskelinen
- University of Eastern
Finland, Department of Chemistry, Joensuu 80101, Finland
| | - Waqar Zafar
- University of Eastern
Finland, Department of Chemistry, Joensuu 80101, Finland
| | - Anastasia I. Solomatina
- St.Petersburg State University, Department of Chemistry, Universitetskii pr. 26, 198504 St. Petersburg, Russia
| | - Pipsa Hirva
- University of Eastern
Finland, Department of Chemistry, Joensuu 80101, Finland
| | - Elena V. Grachova
- St.Petersburg State University, Department of Chemistry, Universitetskii pr. 26, 198504 St. Petersburg, Russia
| | - Sergey P. Tunik
- St.Petersburg State University, Department of Chemistry, Universitetskii pr. 26, 198504 St. Petersburg, Russia
| | - Igor O. Koshevoy
- University of Eastern
Finland, Department of Chemistry, Joensuu 80101, Finland
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29
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Ishiwari F, Shoji Y, Fukushima T. Supramolecular scaffolds enabling the controlled assembly of functional molecular units. Chem Sci 2018; 9:2028-2041. [PMID: 29719683 PMCID: PMC5896469 DOI: 10.1039/c7sc04340f] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 01/19/2018] [Indexed: 12/14/2022] Open
Abstract
To assemble functional molecular units into a desired structure while controlling positional and orientational order is a key technology for the development of high-performance organic materials that exhibit electronic, optoelectronic, biological and even dynamic functions. For this purpose, we cannot rely simply on the inherent self-assembly properties of the target functional molecular units, since it is difficult to predict, based solely on the molecular structure, what structure will be achieved upon assembly. To address this issue, it would be useful to employ molecular building blocks with self-assembly structures that can be clearly predicted and defined, to make target molecular units assemble into a desired structure. To date, various motifs of molecular assemblies, polymers, discrete and/or three-dimensional metal-organic complexes, nanoparticles and metal/metal oxide substrates have been developed to create materials with particular structures and dimensionalities. In this perspective, we define such assembly motifs as "supramolecular scaffolds". The structure of supramolecular scaffolds can be classified in terms of dimensionality, and they range in size from nano- to macroscopic scales. Functional molecular units, when attached to supramolecular scaffolds either covalently or non-covalently, can be assembled into specific structures, thus enabling the exploration of new properties, which cannot be achieved with the target molecular units alone. Through the classification and overview of reported examples, we shed new light on supramolecular scaffolds for the rational design of organic and polymeric materials.
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Affiliation(s)
- Fumitaka Ishiwari
- Laboratory for Chemistry and Life Science , Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku , Yokohama 226-8503 , Japan .
| | - Yoshiaki Shoji
- Laboratory for Chemistry and Life Science , Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku , Yokohama 226-8503 , Japan .
| | - Takanori Fukushima
- Laboratory for Chemistry and Life Science , Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku , Yokohama 226-8503 , Japan .
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30
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Konda M, Jadhav RG, Maiti S, Mobin SM, Kauffmann B, Das AK. Understanding the conformational analysis of gababutin based hybrid peptides. Org Biomol Chem 2018; 16:1728-1735. [DOI: 10.1039/c8ob00035b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A new class of gababutin-based tetrapeptide shows a C12/C10 hydrogen-bonded hybrid turn.
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Affiliation(s)
- Maruthi Konda
- Department of Chemistry
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Rohit G. Jadhav
- Department of Chemistry
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Sayan Maiti
- Department of Chemistry
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Shaikh M. Mobin
- Department of Chemistry
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Brice Kauffmann
- Université de Bordeaux
- CNRS
- UMS 3033
- INSERM US001 Institut Européen de Chimie et de Biologie (IECB)
- 33600 Pessac
| | - Apurba K. Das
- Department of Chemistry
- Indian Institute of Technology Indore
- Indore 453552
- India
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31
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Dhamija A, Saha B, Rath SP. Metal-Center-Driven Supramolecular Chirogenesis in Tweezer Amino Alcohol Complexes: Structural, Spectroscopic, and Theoretical Investigations. Inorg Chem 2017; 56:15203-15215. [DOI: 10.1021/acs.inorgchem.7b02569] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Avinash Dhamija
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Bapan Saha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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32
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Takada T, Iwaki T, Nakamura M, Yamana K. Photoresponsive Electrodes Modified with DNA Duplexes Possessing a Porphyrin Dimer. Chemistry 2017; 23:18258-18263. [PMID: 29052264 DOI: 10.1002/chem.201704281] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Indexed: 12/29/2022]
Abstract
This work describes the formation of a porphyrin (Por) dimer using a DNA duplex as a scaffold and photocurrent generation from electrodes modified with a monolayer of Por-DNA conjugates. The solid-phase click reaction between an azide-porphyrin and oligonucleotide labeled with an ethynyl group on CPG support was utilized to conjugate the Por to the DNA. UV/Vis absorption and circular dichroism (CD) spectral studies revealed that the Por dimer can be formed through DNA hybridization and that through-space electronic interactions, characterized from the exciton-coupled absorption and the bisignate CD, can occur between the two Por molecules. Photoelectrochemical experiments were performed for the electrodes functionalized with a monolayer composed of the Por-DNA conjugates. It was found that the Por dimer on the electrode, which was designed to resemble the special pair in natural photosynthesis, shows efficient photocurrent generation in the presence of electron-acceptor reagents compared with the Por monomer. These findings strongly support the idea that the DNA structures could be useful to construct Por arrays, which is essential for the design of photo- and bio-electronic devices.
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Affiliation(s)
- Tadao Takada
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280, Japan
| | - Toshihiro Iwaki
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280, Japan
| | - Mitsunobu Nakamura
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280, Japan
| | - Kazushige Yamana
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280, Japan
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33
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Keshavarz M, Engelkamp H, Xu J, van den Boomen OI, Maan JC, Christianen PCM, Rowan AE. Confining Potential as a Function of Polymer Stiffness and Concentration in Entangled Polymer Solutions. J Phys Chem B 2017; 121:5613-5620. [DOI: 10.1021/acs.jpcb.6b12667] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masoumeh Keshavarz
- High
Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and
Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
- Institute
for Molecules and Materials, Department of Molecular Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Hans Engelkamp
- High
Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and
Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - Jialiang Xu
- Institute
for Molecules and Materials, Department of Molecular Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Onno I. van den Boomen
- Institute
for Molecules and Materials, Department of Molecular Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Jan C. Maan
- High
Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and
Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - Peter C. M. Christianen
- High
Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and
Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - Alan E. Rowan
- Institute
for Molecules and Materials, Department of Molecular Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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34
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Saha B, Ikbal SA, Petrovic AG, Berova N, Rath SP. Complexation of Chiral Zinc-Porphyrin Tweezer with Achiral Diamines: Induction and Two-Step Inversion of Interporphyrin Helicity Monitored by ECD. Inorg Chem 2017; 56:3849-3860. [DOI: 10.1021/acs.inorgchem.6b02686] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bapan Saha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Sk Asif Ikbal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Ana G. Petrovic
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
- Department of Life Sciences, New York Institute of Technology, 1855 Broadway, New York, New York 10023, United States
| | - Nina Berova
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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35
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Martín‐Gomis L, Peralta‐Ruiz F, Thomas MB, Fernández‐Lázaro F, D'Souza F, Sastre‐Santos Á. Multichromophoric Perylenediimide–Silicon Phthalocyanine–C
60
System as an Artificial Photosynthetic Analogue. Chemistry 2017; 23:3863-3874. [DOI: 10.1002/chem.201603741] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 12/12/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Luis Martín‐Gomis
- División de Química Orgánica, Instituto de Bioingeniería Universidad Miguel Hernández Avda. de la Universidad s/n 03203 Elche Spain
| | - Francisco Peralta‐Ruiz
- División de Química Orgánica, Instituto de Bioingeniería Universidad Miguel Hernández Avda. de la Universidad s/n 03203 Elche Spain
| | - Michael B. Thomas
- Department of Chemistry University of North Texas at Denton 1155 Union Circle, #305070 Denton TX 76203-5017 USA
| | - Fernando Fernández‐Lázaro
- División de Química Orgánica, Instituto de Bioingeniería Universidad Miguel Hernández Avda. de la Universidad s/n 03203 Elche Spain
| | - Francis D'Souza
- Department of Chemistry University of North Texas at Denton 1155 Union Circle, #305070 Denton TX 76203-5017 USA
| | - Ángela Sastre‐Santos
- División de Química Orgánica, Instituto de Bioingeniería Universidad Miguel Hernández Avda. de la Universidad s/n 03203 Elche Spain
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36
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Xiang Y, Zhang Q, Li Z, Chen H. Role of electrostatic complementarity between perylenediimide and porphyrin in highly stabilized GNA. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:1156-1162. [DOI: 10.1016/j.msec.2016.03.111] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 02/03/2016] [Accepted: 03/30/2016] [Indexed: 10/22/2022]
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37
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Dhamija A, Ikbal SA, Rath SP. Induction and Rationalization of Supramolecular Chirality in the Tweezer–Diamine Complexes: Insights from Experimental and DFT Studies. Inorg Chem 2016; 55:13014-13026. [DOI: 10.1021/acs.inorgchem.6b02544] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Avinash Dhamija
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Sk Asif Ikbal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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38
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Ishida M, Omagari T, Hirosawa R, Jono K, Sung YM, Yasutake Y, Uno H, Toganoh M, Nakanotani H, Fukatsu S, Kim D, Furuta H. Boron Difluoride Complexes of Expanded N-Confused Calix[n]phyrins That Demonstrate Unique Luminescent and Lasing Properties. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606246] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Masatoshi Ishida
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Toshihiro Omagari
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Ryuji Hirosawa
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Keisuke Jono
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Young Mo Sung
- Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Yuhsuke Yasutake
- Graduate School of Arts and Sciences; The University of Tokyo; Tokyo 153-8902 Japan
| | - Hidemitsu Uno
- Graduate School of Science and Engineering; Ehime University; Matsuyama 790-8577 Japan
| | - Motoki Toganoh
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Hajime Nakanotani
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Susumu Fukatsu
- Graduate School of Arts and Sciences; The University of Tokyo; Tokyo 153-8902 Japan
| | - Dongho Kim
- Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Hiroyuki Furuta
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
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39
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Ishida M, Omagari T, Hirosawa R, Jono K, Sung YM, Yasutake Y, Uno H, Toganoh M, Nakanotani H, Fukatsu S, Kim D, Furuta H. Boron Difluoride Complexes of Expanded N-Confused Calix[n]phyrins That Demonstrate Unique Luminescent and Lasing Properties. Angew Chem Int Ed Engl 2016; 55:12045-9. [DOI: 10.1002/anie.201606246] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Indexed: 01/22/2023]
Affiliation(s)
- Masatoshi Ishida
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Toshihiro Omagari
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Ryuji Hirosawa
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Keisuke Jono
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Young Mo Sung
- Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Yuhsuke Yasutake
- Graduate School of Arts and Sciences; The University of Tokyo; Tokyo 153-8902 Japan
| | - Hidemitsu Uno
- Graduate School of Science and Engineering; Ehime University; Matsuyama 790-8577 Japan
| | - Motoki Toganoh
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Hajime Nakanotani
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Susumu Fukatsu
- Graduate School of Arts and Sciences; The University of Tokyo; Tokyo 153-8902 Japan
| | - Dongho Kim
- Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Hiroyuki Furuta
- Department of Chemistry and Biochemistry; Graduate School of Engineering and Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
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40
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Lim GN, Obondi CO, D'Souza F. A High‐Energy Charge‐Separated State of 1.70 eV from a High‐Potential Donor–Acceptor Dyad: A Catalyst for Energy‐Demanding Photochemical Reactions. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606112] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gary N. Lim
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203-5017 USA
| | - Christopher O. Obondi
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203-5017 USA
| | - Francis D'Souza
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203-5017 USA
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41
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Lim GN, Obondi CO, D'Souza F. A High-Energy Charge-Separated State of 1.70 eV from a High-Potential Donor-Acceptor Dyad: A Catalyst for Energy-Demanding Photochemical Reactions. Angew Chem Int Ed Engl 2016; 55:11517-21. [PMID: 27516155 DOI: 10.1002/anie.201606112] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Indexed: 12/20/2022]
Abstract
A high potential donor-acceptor dyad composed of zinc porphyrin bearing three meso-pentafluorophenyl substituents covalently linked to C60 , as a novel dyad capable of generating charge-separated states of high energy (potential) has been developed. The calculated energy of the charge-separated state was found to be 1.70 eV, the highest reported for a covalently linked porphyrin-fullerene dyad. Intramolecular photoinduced electron transfer leading to charge-separated states of appreciable lifetimes in polar and nonpolar solvents has been established from studies involving femto- to nanosecond transient absorption techniques. The high energy stored in the form of charge-separated states along with its persistence of about 50-60 ns makes this dyad a potential electron-transporting catalyst to carry out energy-demanding photochemical reactions. This type of high-energy harvesting dyad is expected to open new research in the areas of artificial photosynthesis especially producing energy (potential) demanding light-to-fuel products.
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Affiliation(s)
- Gary N Lim
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX, 76203-5017, USA
| | - Christopher O Obondi
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX, 76203-5017, USA
| | - Francis D'Souza
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX, 76203-5017, USA.
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42
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Kim KT, Choi TS, Kim KY, Kim HI, Kim BH. Disassembly of Chromophore-Guided DNA Duplexes through Site-Selective Binding of Coralyne to Pyrene-Modified Adenine Bases. Chempluschem 2016; 81:590-593. [DOI: 10.1002/cplu.201600230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Ki Tae Kim
- Department of Chemistry; Division of Advanced Materials Science; Pohang University of Science and Technology; Pohang 37673 Republic of Korea
| | - Tae Su Choi
- Department of Chemistry; Division of Advanced Materials Science; Pohang University of Science and Technology; Pohang 37673 Republic of Korea
- Department of Chemistry; Korea University; Seoul 02841 Republic of Korea
| | - Ka Young Kim
- Department of Chemistry; Division of Advanced Materials Science; Pohang University of Science and Technology; Pohang 37673 Republic of Korea
| | - Hugh I. Kim
- Department of Chemistry; Division of Advanced Materials Science; Pohang University of Science and Technology; Pohang 37673 Republic of Korea
- Department of Chemistry; Korea University; Seoul 02841 Republic of Korea
| | - Byeang Hyean Kim
- Department of Chemistry; Division of Advanced Materials Science; Pohang University of Science and Technology; Pohang 37673 Republic of Korea
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43
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Ikbal SA, Dhamija A, Brahma S, Rath SP. A Nonempirical Approach for Direct Determination of the Absolute Configuration of 1,2-Diols and Amino Alcohols Using Mg(II)bisporphyrin. J Org Chem 2016; 81:5440-9. [DOI: 10.1021/acs.joc.6b00724] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sk Asif Ikbal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Avinash Dhamija
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Sanfaori Brahma
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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44
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Zinkevich T, Venderbosch B, Jaspers M, Kouwer PHJ, Rowan AE, van Eck ERH, Kentgens APM. Solid-state NMR characterization of tri-ethyleneglycol grafted polyisocyanopeptides. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:328-333. [PMID: 26559660 DOI: 10.1002/mrc.4379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 09/30/2015] [Accepted: 10/09/2015] [Indexed: 06/05/2023]
Abstract
In aqueous media, ethylene glycol substituted polyisocyanopeptides (PICPs) change their state (undergo a sol-to-gel transition) as a response to temperature. This makes them promising materials for various biomedical applications, for instance, for controlled drug release and non-damaging wound dressing. To utilize PICP in biomedical applications, understanding of the origin of the gelation process is needed, but this is experimentally difficult because of the notoriously low gelator concentration in combination with the slow polymer dynamics in the sample. This paper describes a detailed characterization of the dried state of PICPs by solid-state NMR measurements. Both the (13) C and the (1) H NMR resonances were assigned using a combination of 1D cross-polarization magic angle spinning, 2D (13) C-(1) H heteronuclear correlation spectra and (1) H-(1) H single quantum-double quantum experiments. In addition, the chemical groups involved in dipolar interaction with each other were used to discuss the dynamics and spatial conformation of the polymer. In contrast to other PICP polymers, two resonances for the backbone carbon are observed, which are present in equal amounts. The possible origin of these resonances is discussed in the last section of this work. The data obtained during the current studies will be further used in elucidating mechanisms of the bundling and gelation. A comprehensive picture will make it possible to tailor polymer properties to meet specific needs in different applications. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- T Zinkevich
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - B Venderbosch
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - M Jaspers
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - P H J Kouwer
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - A E Rowan
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - E R H van Eck
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - A P M Kentgens
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
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45
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Lewandowska U, Zajaczkowski W, Pisula W, Ma Y, Li C, Müllen K, Wennemers H. Effect of Structural Modifications on the Self-Assembly of Oligoprolines Conjugated with Sterically Demanding Chromophores. Chemistry 2016; 22:3804-9. [PMID: 26891419 DOI: 10.1002/chem.201504952] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Indexed: 12/14/2022]
Abstract
Conjugates between oligoprolines and sterically demanding perylene monoimides (PMIs) form hierarchical supramolecular self-assemblies. The influence of the length and stereochemistry at the attachment site between the peptide backbone and the chromophore on the self-assembly properties of the conjugates was explored. Comparison between oligoprolines bearing 4R- or 4S-configured azidoprolines (Azp) for the conjugation with the PMIs revealed that diastereoisomers with 4R configuration guide the self-assembly consistently better than conjugates with 4S configuration. Elongating the peptide chain beyond nine proline residues or introducing structural "errors", by altering the absolute configuration of one stereogenic center at the outside of the functionalizable oligoproline helix, lowered the efficacy of self-assembly significantly, both in solution phase and in the solid state. The results showed how subtle structural modifications allow for tuning the self-assembly of chromophores and provided further design principles for the development of peptide-chromophore conjugates into nanostructured materials.
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Affiliation(s)
- Urszula Lewandowska
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | | | - Wojciech Pisula
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.,Department of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924, Lodz, Poland
| | - Yingjie Ma
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Chen Li
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
| | - Helma Wennemers
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland.
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46
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Mori T, Sharma A, Hegmann T. Significant Enhancement of the Chiral Correlation Length in Nematic Liquid Crystals by Gold Nanoparticle Surfaces Featuring Axially Chiral Binaphthyl Ligands. ACS NANO 2016; 10:1552-64. [PMID: 26735843 DOI: 10.1021/acsnano.5b07164] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Chirality is a fundamental scientific concept best described by the absence of mirror symmetry and the inability to superimpose an object onto its mirror image by translation and rotation. Chirality is expressed at almost all molecular levels, from single molecules to supramolecular systems, and present virtually everywhere in nature. Here, to explore how chirality propagates from a chiral nanoscale surface, we study gold nanoparticles functionalized with axially chiral binaphthyl molecules. In particular, we synthesized three enantiomeric pairs of chiral ligand-capped gold nanoparticles differing in size, curvature, and ligand density to tune the chirality transfer from nanoscale solid surfaces to a bulk anisotropic liquid crystal medium. Ultimately, we are examining how far the chirality from a nanoparticle surface reaches into a bulk material. Circular dichroism spectra of the gold nanoparticles decorated with binaphthyl thiols confirmed that the binaphthyl moieties form a cisoid conformation in isotropic organic solvents. In the chiral nematic liquid crystal phase, induced by dispersing the gold nanoparticles into an achiral anisotropic nematic liquid crystal solvent, the binaphthyl moieties on the nanoparticle surface form a transoid conformation as determined by imaging the helical twist direction of the induced cholesteric phase. This suggests that the ligand density on the nanoscale metal surfaces provides a dynamic space to alter and adjust the helicity of binaphthyl derivatives in response to the ordering of the surrounding medium. The helical pitch values of the induced chiral nematic phase were determined, and the helical twisting power (HTP) of the chiral gold nanoparticles calculated to elucidate the chirality transfer efficiency of the binaphthyl ligand capped gold nanoparticles. Remarkably, the HTP increases with increasing diameter of the particles, that is, the efficiency of the chirality transfer of the binaphthyl units bound to the nanoparticle surface is diminished as the size of the particle is reduced. However, in comparison to the free ligands, per chiral molecule all tested gold nanoparticles induce helical distortions in a 10- to 50-fold larger number of liquid crystal host molecules surrounding each particle, indicating a significantly enhanced chiral correlation length. We propose that both the helicity and the chirality transfer efficiency of axially chiral binaphthyl derivatives can be controlled at metal nanoparticle surfaces by adjusting the particle size and curvature as well as the number and density of the chiral ligands to ultimately measure and tune the chiral correlation length.
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Affiliation(s)
- Taizo Mori
- Liquid Crystal Institute, Chemical Physics Interdisciplinary Program and ‡Department of Chemistry and Biochemistry, Kent State University , Kent, Ohio 44242-0001 United States
| | - Anshul Sharma
- Liquid Crystal Institute, Chemical Physics Interdisciplinary Program and ‡Department of Chemistry and Biochemistry, Kent State University , Kent, Ohio 44242-0001 United States
| | - Torsten Hegmann
- Liquid Crystal Institute, Chemical Physics Interdisciplinary Program and ‡Department of Chemistry and Biochemistry, Kent State University , Kent, Ohio 44242-0001 United States
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47
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Keshavarz M, Engelkamp H, Xu J, Braeken E, Otten MBJ, Uji-I H, Schwartz E, Koepf M, Vananroye A, Vermant J, Nolte RJM, De Schryver F, Maan JC, Hofkens J, Christianen PCM, Rowan AE. Nanoscale Study of Polymer Dynamics. ACS NANO 2016; 10:1434-1441. [PMID: 26688072 DOI: 10.1021/acsnano.5b06931] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The thermal motion of polymer chains in a crowded environment is anisotropic and highly confined. Whereas theoretical and experimental progress has been made, typically only indirect evidence of polymer dynamics is obtained either from scattering or mechanical response. Toward a complete understanding of the complicated polymer dynamics in crowded media such as biological cells, it is of great importance to unravel the role of heterogeneity and molecular individualism. In the present work, we investigate the dynamics of synthetic polymers and the tube-like motion of individual chains using time-resolved fluorescence microscopy. A single fluorescently labeled polymer molecule is observed in a sea of unlabeled polymers, giving access to not only the dynamics of the probe chain itself but also to that of the surrounding network. We demonstrate that it is possible to extract the characteristic time constants and length scales in one experiment, providing a detailed understanding of polymer dynamics at the single chain level. The quantitative agreement with bulk rheology measurements is promising for using local probes to study heterogeneity in complex, crowded systems.
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Affiliation(s)
- Masoumeh Keshavarz
- High Field Magnet Laboratory (HFML - EMFL), Radboud University , Toernooiveld 7, NL-6525 ED Nijmegen, The Netherlands
- Institute for Molecules and Materials, Department of Molecular Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Hans Engelkamp
- High Field Magnet Laboratory (HFML - EMFL), Radboud University , Toernooiveld 7, NL-6525 ED Nijmegen, The Netherlands
- Division of Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven , Celestijnenlaan 200 F, B-3001 Heverlee, Belgium
| | - Jialiang Xu
- Institute for Molecules and Materials, Department of Molecular Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Els Braeken
- Division of Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven , Celestijnenlaan 200 F, B-3001 Heverlee, Belgium
| | - Matthijs B J Otten
- Institute for Molecules and Materials, Department of Molecular Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Hiroshi Uji-I
- Division of Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven , Celestijnenlaan 200 F, B-3001 Heverlee, Belgium
| | - Erik Schwartz
- Institute for Molecules and Materials, Department of Molecular Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Matthieu Koepf
- Institute for Molecules and Materials, Department of Molecular Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Anja Vananroye
- Division of Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven , Celestijnenlaan 200 F, B-3001 Heverlee, Belgium
| | - Jan Vermant
- Department of Chemical Engineering, Katholieke Universiteit Leuven , de Croylaan 46, B-3001 Heverlee, Belgium
- Department of Materials - Hönggerberg, ETH Zürich , Wolfgang-Pauli-Strasse 10, CH-8093 Zürich, Switzerland
| | - Roeland J M Nolte
- Institute for Molecules and Materials, Department of Molecular Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Frans De Schryver
- Division of Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven , Celestijnenlaan 200 F, B-3001 Heverlee, Belgium
| | - Jan C Maan
- High Field Magnet Laboratory (HFML - EMFL), Radboud University , Toernooiveld 7, NL-6525 ED Nijmegen, The Netherlands
| | - Johan Hofkens
- Division of Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven , Celestijnenlaan 200 F, B-3001 Heverlee, Belgium
- Nano-Science Center/Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Peter C M Christianen
- High Field Magnet Laboratory (HFML - EMFL), Radboud University , Toernooiveld 7, NL-6525 ED Nijmegen, The Netherlands
| | - Alan E Rowan
- Institute for Molecules and Materials, Department of Molecular Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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48
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Abdul Rahim NA, Fujiki M. Aggregation-induced scaffolding: photoscissable helical polysilane generates circularly polarized luminescent polyfluorene. Polym Chem 2016. [DOI: 10.1039/c6py00595k] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An enantiopair of rigid rod-like helical polysilanes as a photoscissible scaffold allowed the production of CPL- and CD-active dioctylpolyfluorene aggregates associated with complete removal by a polysilane-selective photoscissoring reaction at 313 nm.
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Affiliation(s)
- Nor Azura Abdul Rahim
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
- School of Materials Engineering
| | - Michiya Fujiki
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
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49
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Ikbal SA, Brahma S, Rath SP. Transfer and control of molecular chirality in the 1 : 2 host-guest supramolecular complex consisting of Mg(II)bisporphyrin and chiral diols: the effect of H-bonding on the rationalization of chirality. Chem Commun (Camb) 2015; 50:14037-40. [PMID: 25271122 DOI: 10.1039/c4cc06092j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A clear rationalization of the origin of chirality transfer from an optically active diol guest to an achiral Mg(ii)bisporphyrin host in a series of 1 : 2 host-guest supramolecular complexes has been reported here that has so far remained the most outstanding issue for the chirogenic process.
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Affiliation(s)
- Sk Asif Ikbal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
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50
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Son M, Fimmel B, Dehm V, Würthner F, Kim D. Folding-Induced Modulation of Excited-State Dynamics in an Oligophenylene-Ethynylene-Tethered Spiral Perylene Bisimide Aggregate. Chemphyschem 2015; 16:1757-67. [DOI: 10.1002/cphc.201500156] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Indexed: 11/11/2022]
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