1
|
Nguyen DD, Jones NC, Hoffmann SV, Spanget-Larsen J. Near and vacuum UV polarization spectroscopy of 1,4-distyrylbenzene. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 286:122019. [PMID: 36308827 DOI: 10.1016/j.saa.2022.122019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/12/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
The UV absorbance bands of 1,4-distyrylbenzene (1,4-Bis[(E)-2-phenylethenyl]benzene, DSB) are investigated by Synchrotron Radiation Linear Dichroism (SRLD) spectroscopy using stretched polyethylene as an anisotropic solvent. The observed polarization data provide information on the transition moment directions of the observed spectral features. The investigation covers the range 15,000-58,000 cm-1 (667-172 nm), thereby providing new information on the transitions of DSB in the vacuum UV region. The observed spectrum is characterized by four main band systems centered at 27,600, 41,000, 49,800, and 57,500 cm-1 (362, 244, 201, and 174 nm). In general, the observed bands and their polarization directions are well predicted by the results of quantum chemical calculations using Time-Dependent Density Functional Theory (TD-DFT) with the functional CAM-B3LYP, and with the semiempirical all-valence-electrons method LCOAO.
Collapse
Affiliation(s)
- Duy Duc Nguyen
- Department of Science and Environment, Roskilde University, Universitetsvej 1, DK-4000 Roskilde, Denmark
| | - Nykola C Jones
- ISA, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
| | - Søren V Hoffmann
- ISA, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
| | - Jens Spanget-Larsen
- Department of Science and Environment, Roskilde University, Universitetsvej 1, DK-4000 Roskilde, Denmark.
| |
Collapse
|
2
|
Ferger M, Ban Ž, Krošl I, Tomić S, Dietrich L, Lorenzen S, Rauch F, Sieh D, Friedrich A, Griesbeck S, Kenđel A, Miljanić S, Piantanida I, Marder TB. Bis(phenylethynyl)arene Linkers in Tetracationic Bis-triarylborane Chromophores Control Fluorimetric and Raman Sensing of Various DNAs and RNAs. Chemistry 2021; 27:5142-5159. [PMID: 33411942 PMCID: PMC8048639 DOI: 10.1002/chem.202005141] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/20/2020] [Indexed: 11/24/2022]
Abstract
We report four new luminescent tetracationic bis-triarylborane DNA and RNA sensors that show high binding affinities, in several cases even in the nanomolar range. Three of the compounds contain substituted, highly emissive and structurally flexible bis(2,6-dimethylphenyl-4-ethynyl)arene linkers (3: arene=5,5'-2,2'-bithiophene; 4: arene=1,4-benzene; 5: arene=9,10-anthracene) between the two boryl moieties and serve as efficient dual Raman and fluorescence chromophores. The shorter analogue 6 employs 9,10-anthracene as the linker and demonstrates the importance of an adequate linker length with a certain level of flexibility by exhibiting generally lower binding affinities than 3-5. Pronounced aggregation-deaggregation processes are observed in fluorimetric titration experiments with DNA for compounds 3 and 5. Molecular modelling of complexes of 5 with AT-DNA, suggest the minor groove as the dominant binding site for monomeric 5, but demonstrate that dimers of 5 can also be accommodated. Strong SERS responses for 3-5 versus a very weak response for 6, particularly the strong signals from anthracene itself observed for 5 but not for 6, demonstrate the importance of triple bonds for strong Raman activity in molecules of this compound class. The energy of the characteristic stretching vibration of the C≡C bonds is significantly dependent on the aromatic moiety between the triple bonds. The insertion of aromatic moieties between two C≡C bonds thus offers an alternative design for dual Raman and fluorescence chromophores, applicable in multiplex biological Raman imaging.
Collapse
Affiliation(s)
- Matthias Ferger
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Željka Ban
- Division of Organic Chemistry & BiochemistryRuđer Bošković Institute, Bijenička 5410000ZagrebCroatia
| | - Ivona Krošl
- Division of Organic Chemistry & BiochemistryRuđer Bošković Institute, Bijenička 5410000ZagrebCroatia
| | - Sanja Tomić
- Division of Organic Chemistry & BiochemistryRuđer Bošković Institute, Bijenička 5410000ZagrebCroatia
| | - Lena Dietrich
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Sabine Lorenzen
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Florian Rauch
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Daniel Sieh
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Stefanie Griesbeck
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Adriana Kenđel
- Division of Analytical ChemistryDepartment of Chemistry, Faculty of ScienceUniversity of Zagreb, Horvatovac 102a10000ZagrebCroatia
| | - Snežana Miljanić
- Division of Analytical ChemistryDepartment of Chemistry, Faculty of ScienceUniversity of Zagreb, Horvatovac 102a10000ZagrebCroatia
| | - Ivo Piantanida
- Division of Organic Chemistry & BiochemistryRuđer Bošković Institute, Bijenička 5410000ZagrebCroatia
| | - Todd B. Marder
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| |
Collapse
|
3
|
Thulstrup PW, Jones NC, Hoffmann SV, Spanget-Larsen J. UV polarisation spectroscopy of 1,4-diethynylbenzene. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1853841] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Peter W. Thulstrup
- Department of Chemistry, University of Copenhagen, Copenhagen Ø, Denmark
| | - Nykola C. Jones
- Department of Physics and Astronomy, Aarhus University, Aarhus C, Denmark
| | - Søren V. Hoffmann
- Department of Physics and Astronomy, Aarhus University, Aarhus C, Denmark
| | - Jens Spanget-Larsen
- Department of Science and Environment, Roskilde University, Roskilde, Denmark
| |
Collapse
|
4
|
Magnanelli TJ, Engmann S, Wahlstrand JK, Stephenson JC, Richter LJ, Heilweil EJ. Polarization Dependence of Charge Conduction in Conjugated Polymer Films Investigated with Time-Resolved Terahertz Spectroscopy. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2020; 124:10.1021/acs.jpcc.9b11870. [PMID: 38680539 PMCID: PMC11047265 DOI: 10.1021/acs.jpcc.9b11870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Room temperature Time-Domain Terahertz (TDS) and Time-Resolved Terahertz (TRTS) spectroscopic methods are employed to measure carrier mobility and charge generation efficiency in thin-film semiconductor polymers. Interrogation of the dependence on excitation and probe polarizations yields insight into the underlying material properties that guide charge transport. We apply THz polarization anisotropy probes to analyze charge conduction in preparations of the copolymer PCDTPT, consisting of alternating cyclopenta-dithiophene (donor) and thiadiazolo-pyridine (acceptor) units. Comparisons are made among films of different ordering and morphology, including aligned films prepared by blade coating, a near isotropic dropcast film, and isotropic liquid dispersion. They are further contrasted with their population dynamics ascertained through transient absorption and the traditional photoconductive polymer poly-3-hexylthiophene (P3HT). Polarization anisotropy is observed as preferential charge conduction along the backbone propagation direction of PCDTPT, with various factors disproportionately influencing directional mobility and charge pair yield. PCDTPT exhibits unexpectedly strong conductivity when isolated in toluene dispersion. Quantitative comparisons yield a better understanding of polaron/free-charge relaxation and transfer mechanisms and illustrate dynamics among photoexcited charge carriers and their motion and diffusion through different material morphologies.
Collapse
Affiliation(s)
- Timothy J. Magnanelli
- Physical, Measurement Laboratories, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
| | - Sebastian Engmann
- Physical, Measurement Laboratories, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
- Theiss Research, La Jolla, CA, 92036, USA
| | - Jared K. Wahlstrand
- Physical, Measurement Laboratories, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
| | - John C. Stephenson
- Physical, Measurement Laboratories, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
| | - Lee J. Richter
- Material, Measurement Laboratories, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
| | - Edwin J. Heilweil
- Physical, Measurement Laboratories, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
| |
Collapse
|
5
|
Nguyen DD, Jones NC, Hoffmann SV, Spanget-Larsen J. Electronic states of dibenzo-p-dioxin. A synchrotron radiation linear dichroism investigation. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2018.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
6
|
Nguyen DD, Jones NC, Hoffmann SV, Spanget-Larsen J. Vacuum UV Polarization Spectroscopy of p-Terphenyl. J Phys Chem A 2018; 122:184-191. [PMID: 29207234 DOI: 10.1021/acs.jpca.7b10442] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
p-Terphenyl is used as a component in a variety of optical devices. In this investigation, the electronic transitions of p-terphenyl are investigated by synchrotron radiation linear dichroism (SRLD) spectroscopy in the range 30000-58000 cm-1 (330-170 nm) on molecular samples aligned in stretched polyethylene, thereby extending the region investigated by polarization spectroscopy into the vacuum UV. The resulting partial absorbance curves reveal that the vacuum UV band system with a maximum at 55000 cm-1 (180 nm) is predominantly short axis-polarized. This result is of interest in the optical applications of p-terphenyl, for example as a wavelength shifter. The observed polarization spectra are compared with the results of quantum chemical model calculations. Convoluted versions of the transitions predicted with the semiempirical ZINDO method and with the long-range-corrected time-dependent density functional theory (TD-DFT) procedures TD-CAM-B3LYP, TD-LC-ωPBE, and TD-ωB97XD are in similar qualitative agreement with the observed partial absorbance curves throughout the investigated spectral regions, while TD-B3LYP fails to predict qualitatively the spectrum of p-terphenyl in the region above 40000 cm-1 (250 nm).
Collapse
Affiliation(s)
- Duy Duc Nguyen
- Department of Science and Environment, Roskilde University , Universitetsvej 1, DK-4000 Roskilde, Denmark
| | - Nykola C Jones
- ISA, Department of Physics and Astronomy, Aarhus University , Ny Munkegade 120, Bldg. 1520, DK-8000 Aarhus C, Denmark
| | - Søren V Hoffmann
- ISA, Department of Physics and Astronomy, Aarhus University , Ny Munkegade 120, Bldg. 1520, DK-8000 Aarhus C, Denmark
| | - Jens Spanget-Larsen
- Department of Science and Environment, Roskilde University , Universitetsvej 1, DK-4000 Roskilde, Denmark
| |
Collapse
|