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Gobeze HB, Jagadesan P, Schanze KS. Photophysics and charge transfer in oligo(thiophene) based conjugated diblock oligomers. Phys Chem Chem Phys 2023; 25:23685-23695. [PMID: 37610339 DOI: 10.1039/d3cp03067a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
This paper reports an investigation of the electronic structure and photophysical properties of two "diblock" π-conjugated oligomers (T4-TBT and T8-TBT) that feature electron rich tetra(thiophene) (T4) or octa(thiophene) (T8) segments linked to an electron poor 4,7-bis(2-thienyl)-2,1,3-benzothiadiazole (TBT) moiety. Electrochemistry and UV-visible absorption spectroscopy reveals that the diblock oligomers display redox and absorption features that can be attributed to the Tn and TBT units. Density functional theory (DFT) and time-dependent DFT (TDDFT) calculations support the experimental electrochemistry and optical spectroscopy results, suggesting that the frontier orbitals on the diblock oligomers retain characteristics of the individual π-conjugated segments. However, low energy optical transitions are anticipated to arise from Tn to TBT charge transfer. Fluorescence spectroscopy on the diblock oligomers reveals that the oligomers feature strongly solvent dependent fluorescence. In non-polar solvents (hexane, toluene), the emission is structured with a moderate Stokes shift; however, in more polar solvents the emission becomes broader, and red-shifts significantly. Transient absorption spectroscopy on timescales from femtoseconds (fs) to microseconds (μs) reveals that in non-polar solvents excitation produces a singlet excited state (LE) that decays uniformly to the ground state in parallel with intersystem crossing to a triplet state. By contrast, in more polar solvents, excitation produces a very short-lived excited state (1-3 ps) which evolves rapidly into a second excited state that is attributed to the charge transfer (CT) state. The fast dynamics are associated with crossing from the LE state, which is populated initially by photoexcitation, into the CT state, which then decays to the ground state. The photophysical properties and dynamics of the LE and CT excited states are very similar for T4-TBT and T8-TBT, suggesting that the length of the oligo(thiophene) segment does not have a strong influence on the energy, structure or dynamics of the LE and CT excited states.
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Affiliation(s)
- Habtom B Gobeze
- University of Texas at San Antonio, Department of Chemistry, One UTSA Circle, San Antonio, TX 78249, USA.
| | - Pradeepkumar Jagadesan
- University of Texas at San Antonio, Department of Chemistry, One UTSA Circle, San Antonio, TX 78249, USA.
| | - Kirk S Schanze
- University of Texas at San Antonio, Department of Chemistry, One UTSA Circle, San Antonio, TX 78249, USA.
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2
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Chutia T, Kalita DJ. First-principles insight into the structural and optoelectronic properties of Sn- and Pb-based hybrid halide perovskites for photovoltaic applications. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2037772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Tridip Chutia
- Department of Chemistry, Gauhati University, Guwahati, India
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3
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Jones AL, Schanze KS. Fluorescent Charge-Transfer Excited States in Acceptor Derivatized Thiophene Oligomers. J Phys Chem A 2020; 124:7001-7013. [DOI: 10.1021/acs.jpca.0c05561] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Austin L. Jones
- Department of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, Florida P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Kirk S. Schanze
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
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Liu T, Yang L, Feng W, Liu K, Ran Q, Wang W, Liu Q, Peng H, Ding L, Fang Y. Dual-Mode Photonic Sensor Array for Detecting and Discriminating Hydrazine and Aliphatic Amines. ACS APPLIED MATERIALS & INTERFACES 2020; 12:11084-11093. [PMID: 32031775 DOI: 10.1021/acsami.0c00568] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Colorimetric chemosensors have attracted tremendous interest for sensing hazardous substances in an uncomplicated and economical manner. Herein, a series of push-pull dicyanovinyl-substituted oligothiophene derivatives were designed, and the impacts of different end-cappers on their photophysical properties were comprehensively investigated. Interestingly, combined with a zinc porphyrin derivative (Zn-TPP), one dicyanovinyl-substituted oligothiophene derivative (NA-3T-CN) can be further developed into colorimetric and fluorescent sensor array for dual-mode detection of aliphatic amines and hydrazine. The obtained sensors showed satisfactory results between optical response and analyte's concentration both in selective single-sensor type and in enhanced multisensory mode. Based on the fluorescence change of the NA-3T-CN system, the detection limit for N2H4 was calculated to be around 1.22 × 10-5 mol/L in THF. The stained TLC-supported sensor array offers obvious optical changes for down to 0.5 wt % hydrazine solution for naked-eye sensing. An aromatic amine like aniline has no obvious effect on the dicyanovinyl-substituted oligothiophene derivatives. We also found that a zinc porphyrin derivative has an obvious colorimetric response to the presence of hydrazine, ethanolamine, and aniline. Furthermore, smartphone-enabled readout system and data treatment based on RGB changes of the sensor array were performed, and the discrimination capability among hydrazine, aliphatic amines, and aromatic amine was satisfactory. In this regard, related push-pull oligothiophene derivatives not only can be regarded as models for a fundamental understanding of the relationship between molecular structure and photophysical properties but also present potential applications in the field of real-time and visual detection of hazardous chemicals.
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Affiliation(s)
- Taihong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Lüjie Yang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Wan Feng
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Ke Liu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Qian Ran
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Weina Wang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Quan Liu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Haonan Peng
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Liping Ding
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
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5
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Jin FZ, Chen CQ, Zhao Q, Kan JL, Zhou Y, Chen GJ. Synthesis tricyanovinyl derivatives via one-pot tandem reactions with heterogeneous catalyst Au@Cu(II)-MOF. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2018.04.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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6
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Asano MS, Yasuda Y, Kagota D, Haque T, Nomura K. Effects of terthiophene as the end-groups in triblock copolymers consisting of poly(fluorene vinylene) and oligo(phenylene vinylene): Time-resolved fluorescence and its anisotropy. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.08.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Reig M, Bagdziunas G, Volyniuk D, Grazulevicius JV, Velasco D. Tuning the ambipolar charge transport properties of tricyanovinyl-substituted carbazole-based materials. Phys Chem Chem Phys 2017; 19:6721-6730. [DOI: 10.1039/c6cp08078b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ambipolar charge transport properties of a series of push–pull carbazole-based semiconductors are here evaluated. The ambipolar characteristics depend on the supramolecular organization. Experimental results were confirmed and justified through the X-ray analysis of single crystals and by theoretical calculations.
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Affiliation(s)
- Marta Reig
- Grup de Materials Orgànics
- Institut de Nanociència i Nanotecnologia (IN2UB)
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- Universitat de Barcelona
| | - Gintautas Bagdziunas
- Department of Polymer Chemistry and Technology
- Kaunas University of Technology
- Kaunas
- Lithuania
- Department of Material Science and Electrical Engineering
| | - Dmytro Volyniuk
- Department of Polymer Chemistry and Technology
- Kaunas University of Technology
- Kaunas
- Lithuania
| | - Juozas V. Grazulevicius
- Department of Polymer Chemistry and Technology
- Kaunas University of Technology
- Kaunas
- Lithuania
| | - Dolores Velasco
- Grup de Materials Orgànics
- Institut de Nanociència i Nanotecnologia (IN2UB)
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- Universitat de Barcelona
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Kondo M, Inoue Y, Koeduka Y, Funahashi M, Heya A, Matsuo N, Kawatsuki N. Synthesis of Phenylenevinylene Oligothiophene Derivatives with and without Cyano Side Substitution and Evaluation of Optoelectronic Characteristics. CHEM LETT 2015. [DOI: 10.1246/cl.150274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mizuho Kondo
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo
| | - Yukihiro Inoue
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo
| | - Yuki Koeduka
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo
| | - Masahiro Funahashi
- Department of Advanced Materials Science, Faculty of Engineering, Kagawa University
| | - Akira Heya
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo
| | - Naoto Matsuo
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo
| | - Nobuhiro Kawatsuki
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo
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Legrand A, Moissette A, Hureau M, Casale S, Massiani P, Vezin H, Mamede AS, Batonneau-Gener I. Electron transfers in a TiO2-containing MOR zeolite: synthesis of the nanoassemblies and application using a probe chromophore molecule. Phys Chem Chem Phys 2015; 16:13145-55. [PMID: 24866869 DOI: 10.1039/c4cp01543f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New assemblies constituted by a microporous matrix of mordenite (MOR) zeolite on which TiO2 nanoclusters are deposited were synthesized using ionic oxalate complexes and TiCl3 titanium precursors. The samples were used to investigate the transfer of electrons produced by spontaneous or photo-induced ionization of a guest molecule (t-stilbene, t-St) occluded in the porous volume towards the conduction band of a conductive material placed nearby, in the pores or at least close to their entrance. The reaction mechanisms were compared in these Ti-rich solids and in a Ti-free mordenite sample. The characterization by XRD, N2 physisorption, TEM, XPS and DRIFT spectroscopy of the supramolecular TiO2/MOR systems before t-St adsorption showed the preservation of the crystalline structure after Ti addition and thermal activation treatments. They also revealed that titanium is mainly located at the external surface of the zeolite grains, in the form of highly dispersed and/or aggregated anatase. After incorporation of the guest molecule in the new assemblies, diffuse reflectance UV-visible and EPR spectroscopies indicate that the electron transfer processes are similar with and without TiO2 but strongly stabilized t-St˙(+) radicals are detected in the TiO2-MOR samples whereas such species were never detected earlier in TiO2-free mordenite using these techniques. The stabilization process is found to be more efficient in the sample prepared with TiCl3 as the precursor than with titanium oxalates. It is proposed that the proximity of TiO2 with the formed t-St˙(+) radicals provokes the stabilization of the radical through capture of the ejected electron by the semi-conductor and that confinement effects can also play a role.
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Affiliation(s)
- A Legrand
- LASIR, UMR 8516, Université Lille 1, Bât C8, 59655 Villeneuve d'Ascq cedex, France.
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Kim SY, Lee AR, Jin GF, Cho YJ, Son HJ, Han WS, Kang SO. Electronic Alteration on Oligothiophenes by o-Carborane: Electron Acceptor Character of o-Carborane in Oligothiophene Frameworks with Dicyano-Vinyl End-On Group. J Org Chem 2015; 80:4573-80. [DOI: 10.1021/acs.joc.5b00336] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- So-Yoen Kim
- Department
of Advanced Materials Chemistry, Korea University, Sejong 339-700, South Korea
| | - Ah-Rang Lee
- Department
of Chemistry, Seoul Women’s University, Seoul 139-774, South Korea
| | - Guo Fan Jin
- Department
of Advanced Materials Chemistry, Korea University, Sejong 339-700, South Korea
| | - Yang-Jin Cho
- Department
of Advanced Materials Chemistry, Korea University, Sejong 339-700, South Korea
| | - Ho-Jin Son
- Department
of Advanced Materials Chemistry, Korea University, Sejong 339-700, South Korea
| | - Won-Sik Han
- Department
of Chemistry, Seoul Women’s University, Seoul 139-774, South Korea
| | - Sang Ook Kang
- Department
of Advanced Materials Chemistry, Korea University, Sejong 339-700, South Korea
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Wang J, de Jeu WH, Ziener U, Polinskaya MS, Ponomarenko SA, Ruecker U, Ruderer MA, Herzig EM, Müller-Buschbaum P, Moeller M, Mourran A. Monolayer properties of asymmetrically substituted sexithiophene. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:2752-2760. [PMID: 24547811 DOI: 10.1021/la404918b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present a structural comparison of monolayers on a SiO2 substrate of two asymmetrically substituted sexithiophenes (6T). Molecule 1 consists of 6T with a branched alkyl chain at one end only and shows a crystalline structure. In molecule 2, the bifunctional 6T has in addition at the other end a linear alkyl chain. It displays thermotropic liquid crystalline (LC) behavior. Both compounds form readily single molecular layers from solution. Remarkably, full monolayer coverage can be achieved before multilayer growth starts. LC properties promote preordering near the interface as well as exchange of molecules between the growing domains, thus regulating the domain sizes. As a result, the LC compound 2 forms single-molecule islands with larger domain sizes compared to compound 1. Surface X-ray investigations indicate that the 6T cores are tilted relative to the layer normal. The tilt angle is as large as 54° for compound 2 compared to 28° for compound 1. For molecule 2, interfacial constraints and packing requirements because of the asymmetric substitution cause a rather loosely organized core structure.
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Affiliation(s)
- Jingbo Wang
- DWI-Leibniz-Institute for Interactive Materials , Forckenbeckstrasse 50, D-52056 Aachen, Germany
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12
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Pina J, Seixas de Melo JS, Batista RMF, Costa SPG, Raposo MMM. Triphenylamine–Benzimidazole Derivatives: Synthesis, Excited-State Characterization, and DFT Studies. J Org Chem 2013; 78:11389-95. [DOI: 10.1021/jo401803u] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- João Pina
- Department of Chemistry, University of Coimbra, P3004-535 Coimbra, Portugal
| | | | - Rosa M. F. Batista
- Center of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Susana P. G. Costa
- Center of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - M. Manuela M. Raposo
- Center of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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Dal Molin M, Matile S. 3,4-Ethylenedioxythiophene in planarizable push-pull oligothiophenes. Org Biomol Chem 2013; 11:1952-7. [PMID: 23389656 DOI: 10.1039/c3ob27471c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report design, synthesis and evaluation of push-pull quaterthiophene amphiphiles containing one 3,4-ethylenedioxythiophene (EDOT) and a single strong twist in the scaffold. Planarizable push-pull oligothiophene amphiphiles have been introduced recently as conceptually innovative fluorescent probes that sense the fluidity and the potential of lipid bilayer membranes. The "hyper-twisted" EDOT probes respond to planarization and restricted rotational freedom with a red shift and changes in vibrational finestructure in the excitation spectrum, respectively. In solution, comparably weak solvatochromism and significant thermochromism are found. Planarization and restricted rotational freedom afford exquisite sensitivity toward nature and fluidity of lipid bilayer membranes, including ratiometric detection of phase transitions. The sensing of membrane potentials is weakened by these unique properties but remains possible.
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Affiliation(s)
- Marta Dal Molin
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland
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Sahu H, Panda AN. Computational Study on the Effect of Substituents on the Structural and Electronic Properties of Thiophene–Pyrrole-Based π-Conjugated Oligomers. Macromolecules 2013. [DOI: 10.1021/ma3024409] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Harikrishna Sahu
- Department of Chemistry, Indian Institute of Technology Guwahati, India, 781039
| | - Aditya N. Panda
- Department of Chemistry, Indian Institute of Technology Guwahati, India, 781039
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Alonso Doval D, Matile S. Increasingly twisted push–pull oligothiophenes and their planarization in confined space. Org Biomol Chem 2013; 11:7467-71. [DOI: 10.1039/c3ob41706a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Fin A, Vargas Jentzsch A, Sakai N, Matile S. Oligothiophene Amphiphiles as Planarizable and Polarizable Fluorescent Membrane Probes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206446] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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17
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Fin A, Vargas Jentzsch A, Sakai N, Matile S. Oligothiophene Amphiphiles as Planarizable and Polarizable Fluorescent Membrane Probes. Angew Chem Int Ed Engl 2012; 51:12736-9. [DOI: 10.1002/anie.201206446] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 10/17/2012] [Indexed: 01/04/2023]
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