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Jiao F, Wu X, Jian T, Zhang S, Jin H, He P, Chen C, De Yoreo JJ. Hierarchical Assembly of Peptoid‐Based Cylindrical Micelles Exhibiting Efficient Resonance Energy Transfer in Aqueous Solution. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fang Jiao
- School of Chemistry and Molecular EngineeringEast China Normal University 500 DongChuan Road Shanghai 200241 China
- Physical Sciences DivisionPacific Northwest National Laboratory Richland WA 99352 USA
| | - Xuepeng Wu
- Physical Sciences DivisionPacific Northwest National Laboratory Richland WA 99352 USA
- School of Petroleum EngineeringState Key Laboratory of Heavy Oil ProcessingChina University of Petroleum (East China) Qingdao Shandong 266580 China
| | - Tengyue Jian
- Physical Sciences DivisionPacific Northwest National Laboratory Richland WA 99352 USA
| | - Shuai Zhang
- Physical Sciences DivisionPacific Northwest National Laboratory Richland WA 99352 USA
- Department of Materials Science and EngineeringUniversity of Washington Seattle WA 98195 USA
| | - Haibao Jin
- Physical Sciences DivisionPacific Northwest National Laboratory Richland WA 99352 USA
| | - Pingang He
- School of Chemistry and Molecular EngineeringEast China Normal University 500 DongChuan Road Shanghai 200241 China
| | - Chun‐Long Chen
- Physical Sciences DivisionPacific Northwest National Laboratory Richland WA 99352 USA
- Department of Chemical EngineeringUniversity of Washington Seattle WA 98195 USA
| | - James J. De Yoreo
- Physical Sciences DivisionPacific Northwest National Laboratory Richland WA 99352 USA
- Department of Materials Science and EngineeringUniversity of Washington Seattle WA 98195 USA
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Jiao F, Wu X, Jian T, Zhang S, Jin H, He P, Chen CL, De Yoreo JJ. Hierarchical Assembly of Peptoid-Based Cylindrical Micelles Exhibiting Efficient Resonance Energy Transfer in Aqueous Solution. Angew Chem Int Ed Engl 2019; 58:12223-12230. [PMID: 31211884 DOI: 10.1002/anie.201904598] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Indexed: 11/09/2022]
Abstract
Herein we show that by appending bulky β-cyclodextrin (CD) groups onto sheet-forming peptoids, we obtain cylindrical micelles that further assembly into membranes and intertwined ribbons on substrates in aqueous solution, depending on the choice of solution and substrate conditions. In situ atomic force microscopy (AFM) shows that micelle assembly occurs in two steps, starting with "precursor" particles that transform into worm-like micelles, which extend and coalesce to form the higher order structures with a rate and a degree of cooperativity dependent on pH and Ca2+ concentration. After co-assembly with hydrophobic 4-(2-hydroxyethylamino)-7-nitro-2,1,3-benzoxadiazole (NBD) donors that occupy the hydrophobic core, followed by exposure to hydrophilic Rhodamine B as acceptors that insert into cyclodextrin, the micelles exhibit highly efficient Förster resonance energy transfer efficiency in aqueous solution, thereby mimicking natural light harvesting systems.
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Affiliation(s)
- Fang Jiao
- School of Chemistry and Molecular Engineering, East China Normal University, 500 DongChuan Road, Shanghai, 200241, China.,Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Xuepeng Wu
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.,School of Petroleum Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong, 266580, China
| | - Tengyue Jian
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Shuai Zhang
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.,Department of Materials Science and Engineering, University of Washington, Seattle, WA, 98195, USA
| | - Haibao Jin
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Pingang He
- School of Chemistry and Molecular Engineering, East China Normal University, 500 DongChuan Road, Shanghai, 200241, China
| | - Chun-Long Chen
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.,Department of Chemical Engineering, University of Washington, Seattle, WA, 98195, USA
| | - James J De Yoreo
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.,Department of Materials Science and Engineering, University of Washington, Seattle, WA, 98195, USA
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Ito H, Tsukube H, Shinoda S. Chirality transfer in propeller-shaped cyclen-calcium(II) complexes: metal-coordinating and ion-pairing anion procedures. Chemistry 2013; 19:3330-9. [PMID: 23404763 DOI: 10.1002/chem.201204323] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Indexed: 11/07/2022]
Abstract
A series of quadruple-stranded Na(+) and Ca(2+) complexes with octadentate cyclen ligands was synthesized to produce complexes that contained four different side-arm combinations (one triazole-coumarin group and three pyridine groups (1), four pyridine groups (2), one triazole-coumarin group and three quinoline groups (3), and four quinoline groups (4)). X-ray crystallographic analysis revealed that no significant changes occurred in the stereostructure of these complexes upon replacing one pyridine group with a triazole-coumarin moiety, or by replacing Na(+) ions with Ca(2+) ions, although the coordination number of the complexes in the solid state decreased when pyridine groups were replaced by quinoline groups. In solution, all of the side arms were arranged in a propeller-like pattern to yield an enantiomer pair of Δ and Λ forms in each metal complex. The addition of a tert-butoxycarbonyl (Boc)-protected amino acid anion, that is, a coordinative chiral carboxylate anion, to the cyclen-Ca(2+) complex induced circular dichroism (CD) signals in the aromatic region by forming a 1:1 mixture of diastereomeric ternary complexes with opposite complex chirality, whilst the corresponding Na(+) complexes rarely showed any response. In complexes 1-Ca(2+) and 3-Ca(2+), this chirality-transfer process was efficiently followed by considering the induction of the CD signals at two different wavelengths, that is, the coumarin-chromophore region and the aza-aromatic region. The sign and intensity of the CD signal were significantly dependent on both the nature of the aza-aromatic moiety and the enantiomeric purity of the external anion. These Ca(2+) complexes worked as effective probes for the determination of the enantiomeric excess of the chiral anion. The cyclen-Ca(2+) complexes also interacted with the non-coordinative Δ-TRISPHAT anion through an ion-pairing mechanism to achieve chirality transfer from the anion to the metal complex; both complexes 1-Ca(2+) and 3-Ca(2+) clearly showed induced CD signals in the coumarin-chromophore region, owing to ion-paring interactions with the Δ-TRISPHAT anion. Thus, the proper combination of an octadentate cyclen ligand and a metal center demonstrated effective chirality transfer.
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Affiliation(s)
- Hiroshi Ito
- JST, CREST, and Department of Chemistry, Graduated School of Science Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan.
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