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Cho Y, Choi YJ, Kaser SJ, Meacham R, Christoff-Tempesta T, Wu S, Zuo X, Ortony JH. Geometric Transformations Afforded by Rotational Freedom in Aramid Amphiphile Nanostructures. J Am Chem Soc 2023; 145:22954-22963. [PMID: 37819710 DOI: 10.1021/jacs.3c04598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Molecular self-assembly in water leads to nanostructure geometries that can be tuned owing to the highly dynamic nature of amphiphiles. There is growing interest in strongly interacting amphiphiles with suppressed dynamics, as they exhibit ultrastability in extreme environments. However, such amphiphiles tend to assume a limited range of geometries upon self-assembly due to the specific spatial packing induced by their strong intermolecular interactions. To overcome this limitation while maintaining structural robustness, we incorporate rotational freedom into the aramid amphiphile molecular design by introducing a diacetylene moiety between two aramid units, resulting in diacetylene aramid amphiphiles (D-AAs). This design strategy enables rotations along the carbon-carbon sp hybridized bonds of an otherwise fixed aramid domain. We show that varying concentrations and equilibration temperatures of D-AA in water lead to self-assembly into four different nanoribbon geometries: short, extended, helical, and twisted nanoribbons, all while maintaining robust structure with thermodynamic stability. We use advanced microscopy, X-ray scattering, spectroscopic techniques, and two-dimensional (2D) NMR to understand the relationship between conformational freedom within strongly interacting amphiphiles and their self-assembly pathways.
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Affiliation(s)
- Yukio Cho
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Yu-Jin Choi
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Samuel J Kaser
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Rebecca Meacham
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ty Christoff-Tempesta
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Siyu Wu
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Xiaobing Zuo
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Julia H Ortony
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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2
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Álvarez-Conde J, Garzón-Ruiz A, Navarro A, Jiménez-Pulido SB, González-Rodríguez P, Cabanillas-González J, García-Frutos EM. The role of the diyne bond on the excited state deactivation of diyne-bridged 7-azaindoles in solution and solid state. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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3
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Bylinska I, Wiczk W. Influence of the Solvent Properties on Two Individuals Presented in the Excited State - Reverse Fluorosolvatochromism of CNAacDMA. Chemphyschem 2022; 23:e202200293. [PMID: 35758851 DOI: 10.1002/cphc.202200293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/24/2022] [Indexed: 11/06/2022]
Abstract
The photophysical behavior of 10-((4-(dimethylamino)phenyl)ethynyl)anthracene-9-carbonitrile (CNAacDMA) was investigated with absorption and steady-state fluorometry. Studies have shown extremely interesting properties of the analyzed derivative. The studied molecule is characterized by dual fluorescence and bidirectional fluorescence. These two observed phenomena are interrelated. Dual fluorescence analysis (part 1) explains bidirectional fluorescence. The compound in polar solvents shows only one emission band, however in moderate polar solvents shows dual emission. The appearance of the long-wavelength CT band in moderate polar solvents and its lack in polar solvents leading to bidirectional solvatofluorochromism. The solvatochrome analysis was performed in a wide range of 24 solvents. To determine the contribution of specific and nonspecific interaction of this compound with solvents linear and multi-parametric correlation of the solvent polarity were analyzed. The novelty and innovation in this article is to carry out such an analysis separately for two different individuals occurring in the excited state. Single-parameter scale with (30) as a solvent polarity parameter and multi-parameter scales such as the Catalán four-parameter solvent scale were used. The excited state dipole moment was determined based on solvatochromic method. The hydrogen bond energy change after excitation in the Franck-Condon and relaxed excited state were estimated.
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Affiliation(s)
- Irena Bylinska
- Uniwersytet Gdanski, Faculty of Chemistry, ul. Wita Stwosza 63, 80-306, Gdańsk, POLAND
| | - Wieslaw Wiczk
- University of Gdansk: Uniwersytet Gdanski, Faculty of Chemistry, POLAND
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Baronas P, Komskis R, Tankelevičiu Tė E, Adomėnas P, Adomėnienė O, Juršėnas S. Helical Molecular Orbitals to Induce Spin-Orbit Coupling in Oligoyne-Bridged Bifluorenes. J Phys Chem Lett 2021; 12:6827-6833. [PMID: 34270894 DOI: 10.1021/acs.jpclett.1c01569] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Singlet-Triplet energy exchange is an area of active research due to its role in optoelectronic devices and photodynamic therapy. Large spin-orbit coupling (SOC) is difficult to achieve in simple hydrocarbon structures limiting the intersystem crossing (ISC) rates. A new approach to enhance the spin-orbit coupling via helical molecular orbitals is investigated in oligoyne-bridged bifluorenes. Transient absorption studies showed a singlet-to-triplet ISC rate of up to 6 ns-1 resulting in 0.84 triplet yield. Density functional calculations revealed a direct relation between high ISC and large SOC values mediated by helical molecular orbitals. Calculations and spectroscopic data also suggested that El-Sayed forbidden ISC occurs as a direct transition between 1ππ* and 3ππ*, which becomes allowed due to a symmetry-breaking interaction leading to mixing between orthogonal π-systems in the oligoyne fragment.
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Affiliation(s)
- P Baronas
- Institute of Photonics and Nanotechnology, Vilnius University, Sauletekio 3, LT-10257 Vilnius, Lithuania
| | - R Komskis
- Institute of Photonics and Nanotechnology, Vilnius University, Sauletekio 3, LT-10257 Vilnius, Lithuania
| | - E Tankelevičiu Tė
- Institute of Photonics and Nanotechnology, Vilnius University, Sauletekio 3, LT-10257 Vilnius, Lithuania
| | - P Adomėnas
- Fine Synthesis, Ltd., Kalvarijų g. 201E, LT-08311 Vilnius, Lithuania
| | - O Adomėnienė
- Fine Synthesis, Ltd., Kalvarijų g. 201E, LT-08311 Vilnius, Lithuania
| | - S Juršėnas
- Institute of Photonics and Nanotechnology, Vilnius University, Sauletekio 3, LT-10257 Vilnius, Lithuania
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Systematic Studies on the Effect of Fluorine Atoms in Fluorinated Tolanes on Their Photophysical Properties. Molecules 2021; 26:molecules26082274. [PMID: 33919915 PMCID: PMC8070916 DOI: 10.3390/molecules26082274] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/06/2021] [Accepted: 04/08/2021] [Indexed: 11/29/2022] Open
Abstract
In this study, we synthesized a series of fluorinated and non-fluorinated tolanes, in which one or more fluorine atoms were systematically introduced into one aromatic ring of a tolane scaffold, and systematically evaluated their photophysical properties. All the tolanes with or without fluorine substituents were found to have poor photoluminescence (PL) in tetrahydrofuran (THF) solutions. On the other hand, in the crystalline state, non-fluorinated and fluorinated tolanes with one or four fluorine atoms were less emissive, whereas fluorinated tolanes with three or five fluorine atoms exhibited high PL efficiencies (ФPL) up to 0.51. X-ray crystallographic analyses of the emissive fluorinated tolanes revealed that the position of the fluorine substituent played a key role in achieving a high ФPL. Fluorine substituents at the ortho (2/6) and para (4) positions led to tight and rigid packing due to plural π–π stacking and/or hydrogen bonding interactions, resulting in enhanced ФPL caused by the suppression of non-radiative deactivation. Additionally, fluorinated tolanes with three fluorine atoms exhibited notable aggregation-induced PL emission enhancement in THF/water mixed solvents. This demonstrates that the PL characteristics of small PL materials can be tuned depending on the usage requirements.
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Bylińska I, Szabelski M, Wiczk W. Unusual Solvatofluorochromism of the Asymmetrically Substituted Aromatic Acetylene Derivative CNAacDMA**. Chemphyschem 2021. [DOI: 10.1002/cphc.202000804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Irena Bylińska
- University of Gdańsk Faculty of Chemistry Wita Stwosza 63 80-308 Gdańsk Poland
| | - Mariusz Szabelski
- Department of Physics and Biophysics University of Warmia and Mazury in Olsztyn Oczapowskiego 4 10-719 Olsztyn Poland
| | - Wiesław Wiczk
- University of Gdańsk Faculty of Chemistry Wita Stwosza 63 80-308 Gdańsk Poland
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Sakagami R, Saito Y, Mori R, Satake M, Okayasu M, Kikkawa S, Hikawa H, Azumaya I. Cylindrical macrocyclic compounds synthesized by connecting two bowl-shaped calix[3]aramide moieties: structures and chiroptical properties. RSC Adv 2020; 10:34549-34555. [PMID: 35514401 PMCID: PMC9056864 DOI: 10.1039/d0ra07060b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 09/10/2020] [Indexed: 11/30/2022] Open
Abstract
Calix[3]aramide-based macrocycles 1 were successfully synthesized by a Glaser coupling reaction of two meta-calix[3]aramide moieties that have three ethynyl groups. The obtained macrocycles have stereoisomers: an enantiomeric pair and a meso form based on a combination of amide bond directions in the calix[3]aramide moieties at both ends of the molecule. Characteristic absorption spectra derived from the 1,4-diphenylbutadiyne structure were observed, while their ECD spectra were mirror-images. Single-crystal X-ray analysis revealed that each stereoisomer had a cylindrical rigid shape, and the absolute structure of the chiral-form was also assigned by comparing the Flack parameters. Mirror-image VCD spectra were observed for the enantiomeric chiral forms, and a VCD signal pattern of one enantiomer corresponded to that predicted by the relationship between the dihedral angle of the pair of C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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O groups. Chiral macrocyclic compounds whose absolute configurations were derived from the amide bond direction were synthesized by homo coupling of meta-calix[3]aramide derivatives.![]()
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Affiliation(s)
- Ryoko Sakagami
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Yuuki Saito
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Ryuichi Mori
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Misa Satake
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Misaki Okayasu
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Shoko Kikkawa
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Hidemasa Hikawa
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Isao Azumaya
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
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Singh A, Pati AK, Mishra AK. Photophysical Impact of Diacetylenic Conjugation on Classical Donor–Acceptor Electronic Energy Pair. J Phys Chem A 2019; 123:443-453. [DOI: 10.1021/acs.jpca.8b09689] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Anuja Singh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, Tamil Nadu, India
| | - Avik Kumar Pati
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, Tamil Nadu, India
| | - Ashok Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, Tamil Nadu, India
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Temperature-dependence of spectral and photophysical properties of polycyclic aromatic hydrocarbon derivatives of acetylene and buta-1,3-diyne. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Variable-temperature absorption and emission properties of 1,2-diphenylacetylene and 1,4-diphenylbuta-1,3-diyne derivatives. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.08.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Szyszkowska M, Czaplewski C, Wiczk W. Photophysical and theoretical studies of diphenylacetylene derivatives with restricted rotation. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.02.096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Pati AK, Gharpure SJ, Mishra AK. White Light Emission in Butadiyne Bridged Pyrene–Phenyl Hybrid Fluorophore: Understanding the Photophysical Importance of Diyne Spacer and Utilizing the Excited-State Photophysics for Vapor Detection. J Phys Chem A 2016; 120:5838-47. [DOI: 10.1021/acs.jpca.6b04956] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Avik Kumar Pati
- Department
of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Santosh J. Gharpure
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Ashok K. Mishra
- Department
of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
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Bylińska I, Wierzbicka M, Czaplewski C, Wiczk W. Photophysical properties of symmetrically substituted diarylacetylenes and diarylbuta-1,3-diynes. Photochem Photobiol Sci 2016; 15:45-56. [DOI: 10.1039/c5pp00197h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of symmetrically substituted diarylacetylenes and diaryl-1,3-butadiynes were prepared and studied with an emphasis on their spectral and photophysical properties.
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Affiliation(s)
- Irena Bylińska
- Faculty of Chemistry
- University of Gdańsk
- Wita Stwosza 63
- Poland
| | | | | | - Wiesław Wiczk
- Faculty of Chemistry
- University of Gdańsk
- Wita Stwosza 63
- Poland
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