|
1
|
Lamers BAG, van Son MHC, de Graaf FV, van den Bersselaar BWL, de Waal BFM, Komatsu K, Sato H, Aida T, Berrocal JA, Palmans ARA, Vantomme G, Meskers SCJ, Meijer EW. Tuning the donor-acceptor interactions in phase-segregated block molecules. MATERIALS HORIZONS 2022; 9:294-302. [PMID: 34611679 PMCID: PMC8725796 DOI: 10.1039/d1mh01141c] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The assembly of donor-acceptor molecules via charge transfer (CT) interactions gives rise to highly ordered nanomaterials with appealing electronic properties. Here, we present the synthesis and bulk co-assembly of pyrene (Pyr) and naphthalenediimide (NDI) functionalized oligodimethylsiloxanes (oDMS) of discrete length. We tune the donor-acceptor interactions by connecting the pyrene and NDI to the same oligomer, forming a heterotelechelic block molecule (NDI-oDMSPyr), and to two separate oligomers, giving Pyr and NDI homotelechelic block molecules (Pyr-oDMS and NDI-oDMS). Liquid crystalline materials are obtained for binary mixtures of Pyr-oDMS and NDI-oDMS, while crystallization of the CT dimers occurred for the heterotelechelic NDI-oDMS-Pyr block molecule. The synergy between crystallization and phase-segregation coupled with the discrete length of the oDMS units allows for perfect order and sharp interfaces between the insulating siloxane and CT layers composed of crystalline CT dimers. We were able to tune the lamellar domain spacing and donor-acceptor CT interactions by applying pressures up to 6 GPa on the material, making the system promising for soft-material nanotechnologies. These results demonstrate the importance of the molecular design to tune the CT interactions and stability of a CT material.
Collapse
Affiliation(s)
- Brigitte A G Lamers
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Martin H C van Son
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Freek V de Graaf
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Bart W L van den Bersselaar
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Bas F M de Waal
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Kazuki Komatsu
- Geochemistry Research Center, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroshi Sato
- RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
- Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Takuzo Aida
- RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - José Augusto Berrocal
- Adolphe Merkle Institute, Polymer Chemistry and Materials, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Anja R A Palmans
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Ghislaine Vantomme
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Stefan C J Meskers
- Institute for Complex Molecular Systems and Molecular Materials and Nanosystems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - E W Meijer
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| |
Collapse
|
|
2
|
Amemori S, Hamamoto R, Mizuno M. Enhancement of association constants of various charge-transfer complexes in siloxane solvents. NEW J CHEM 2022. [DOI: 10.1039/d2nj00214k] [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
The association constants of various charge-transfer complexes were evaluated in n-hexane, octamethyltrisiloxane and PDMS to investigate the solvent effect.
Collapse
Affiliation(s)
- Shogo Amemori
- NanoMaterials Research Institute, Kanazawa University, Kanazawa 920-1192, Japan
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa 920-1192, Japan
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa 920-1192, Japan
| | - Ryosuke Hamamoto
- School of Chemistry, College of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan
| | - Motohiro Mizuno
- NanoMaterials Research Institute, Kanazawa University, Kanazawa 920-1192, Japan
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa 920-1192, Japan
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa 920-1192, Japan
| |
Collapse
|
|
3
|
Hazawa M, Amemori S, Nishiyama Y, Iga Y, Iwashima Y, Kobayashi A, Nagatani H, Mizuno M, Takahashi K, Wong RW. A light-switching pyrene probe to detect phase-separated biomolecules. iScience 2021; 24:102865. [PMID: 34386728 PMCID: PMC8346672 DOI: 10.1016/j.isci.2021.102865] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/04/2021] [Accepted: 07/12/2021] [Indexed: 11/16/2022] Open
Abstract
Biomolecules may undergo liquid-liquid phase separation (LLPS) to spatiotemporally compartmentalize and regulate diverse biological processes. Because the number of tools to directly probe LLPS is limited (ie. FRAP, FRET, fluorescence microscopy, fluorescence anisotropy, circular dichroism, etc.), the physicochemical traits of phase-separated condensates remain largely elusive. Here, we introduce a light-switching dipyrene probe (Pyr-A) that forms monomers in either hydrophobic or viscous environments, and intramolecular excimers in aqueous solutions. By exploiting their distinct fluorescence emission spectra, we used fluorescent microscopic imaging to study phase-separated condensates formed by in vitro protein droplets and membraneless intracellular organelles (centrosomes). Ratiometric measurement of excimer and monomer fluorescence intensities showed that protein droplets became hydrophobic and viscous as their size increased. Moreover, centrosomes became hydrophobic and viscous during maturation. Our results show that Pyr-A is a valuable tool to characterize LLPS and enhance our understanding of phase separation underlying biological functions.
Collapse
Affiliation(s)
- Masaharu Hazawa
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Ishikawa, Japan
- Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
- WPI Nano Life Science Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Shogo Amemori
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Ishikawa, Japan
- Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
- NanoMaterials Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yoshio Nishiyama
- Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yoshihiro Iga
- Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yuki Iwashima
- Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Akiko Kobayashi
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Hirohisa Nagatani
- Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Motohiro Mizuno
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Ishikawa, Japan
- Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
- NanoMaterials Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Kenji Takahashi
- Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Richard W. Wong
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Ishikawa, Japan
- Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
- WPI Nano Life Science Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| |
Collapse
|