1
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Zhao L, Zhu H, Duo YY, Pang DW, Wang ZG, Liu SL. Near-Infrared II Hemicyanine Dye with Large Stokes Shift Designed by TICT Regulation for Boosting Imaging-Guided Photothermal Therapy. Adv Healthc Mater 2023; 12:e2301584. [PMID: 37660278 DOI: 10.1002/adhm.202301584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/31/2023] [Indexed: 09/04/2023]
Abstract
The serious threat that cancer poses to human health highlights the significance of early detection and effective treatment. The integration of fluorescence diagnosis and photothermal therapy in NIR-II has gained attention due to its high sensitivity, fast response, and noninvasiveness. Fluorescence, produced by the radiative relaxation process of electrons in a molecule, and photothermal, generated by the nonradiative relaxation process of electrons in a molecule, are competing photophysical processes. Hence, it is a challenge for the molecule to balance between the properties of fluorescence and photothermal. In this study, a NIR-II hemicyanine with TICT character is designed to obtain molecules with both better fluorescence and photothermal properties, utilizing positively charged pyridine salt and triphenylamine as electron acceptor and donor, respectively, and oxole as the conjugated π-bridge. HCY-995, one of the synthesized compounds, has a quantum yield of 0.09%, photothermal conversion efficiency of 54.90%, and a significant Stoke shift of 232 nm, which makes it appropriate for the integration of photothermal therapy and high-resolution imaging. This study provides new insights into the development of NIR-II molecules with fluorescent and photothermal integrated properties.
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Affiliation(s)
- Liang Zhao
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, and School of Medicine, Nankai University, Tianjin, 300071, P. R. China
| | - Han Zhu
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, and School of Medicine, Nankai University, Tianjin, 300071, P. R. China
| | - You-Yang Duo
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, and School of Medicine, Nankai University, Tianjin, 300071, P. R. China
| | - Dai-Wen Pang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, and School of Medicine, Nankai University, Tianjin, 300071, P. R. China
| | - Zhi-Gang Wang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, and School of Medicine, Nankai University, Tianjin, 300071, P. R. China
| | - Shu-Lin Liu
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, and School of Medicine, Nankai University, Tianjin, 300071, P. R. China
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2
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Pananilath HF, Govind C, Thadathilanickal TD, Karunakaran V. Molecular torsion controls the excited state relaxation pathways of multibranched tetraphenylpyrazines: effect of substitution of morpholine vs. phenoxazine. Phys Chem Chem Phys 2023; 25:26575-26587. [PMID: 37753725 DOI: 10.1039/d3cp03125j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
Multibranched donor-acceptor derivatives exhibiting desirable photophysical properties are efficiently used in optoelectronic devices, in which the excited state relaxation dynamics of the derivatives control the efficiency of the devices. Here, the effect of intramolecular torsion on the excited state relaxation dynamics of tetraphenylpyrazine (TPP) derivatives in non-polar (toluene) and polar (THF) solvents is investigated by substituting the electron donor of morpholine (TPP-4MOP) and phenoxazine (TPP-4PHO) leading to the planar and twisted configurations, respectively, using femtosecond and nanosecond transient absorption spectroscopy. In the steady state, TPP-4MOP showed feeble emission (ΦF ∼0.03) due to the weak donor by the delocalization of electron density supported by theoretical optimization. The TPP-4PHO exhibited strong emission (ΦF ∼0.18) in toluene compared to that in THF, in which it showed a large Stokes shift (∼9691 cm-1) with low fluorescence quantum yield (ΦF ∼0.01). The observation of large Stokes shifts, inherent nature and theoretical calculations of TPP-4PHO suggest the twisting of the dihedral angle between tetraphenylpyrazine and phenoxazine in the excited state leading to the twisted intramolecular charge transfer state (TICT). The femtosecond and nanosecond transient absorption and picosecond time-resolved emission spectra of TPP-4PHO revealed the signature of the existence of both the partial TICT and TICT states in THF leading to the triplet state. Whereas in the case of TPP-4MOP, the transient absorption spectra showed the formation of the triplet state from the local excited state without the involvement of the TICT state. Aggregation studies of TPP-4PHO in a THF and water mixture reflect the elimination of the TICT state by the restriction of intramolecular torsion in the aggregates leading to an increase of 12-fold of the fluorescence intensity along with shifting of the maximum towards the blue region. These studies revealed that the excited state relaxation pathways of the derivatives are controlled by polarity-dependent torsional motion.
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Affiliation(s)
- Hasim Fayiz Pananilath
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR- National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram-695 019, Kerala, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Chinju Govind
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR- National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram-695 019, Kerala, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Tessy D Thadathilanickal
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR- National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram-695 019, Kerala, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Venugopal Karunakaran
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR- National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram-695 019, Kerala, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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3
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Ibrahim AR, Al-Saadi BS, Husband J, Ismail AH, Baqi Y, Abou-Zied OK. Electron transfer from a new chalcone dye to TiO2 nanoparticles: Synthesis, photophysics, and excited-state dynamics. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Abdel-Jalil RJ, Ramadan Ibrahim A, Abou-Zied OK. Effect of electron-donating groups on the excited state spectroscopy and dynamics of 2′-hydroxychalcone derivatives. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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5
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Hu Q, Zhang P, Zhang Y, Sun J. Polarity- and Pressure-Induced Emission from a Benzophenone-Based Luminophore. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248748. [PMID: 36557881 PMCID: PMC9784629 DOI: 10.3390/molecules27248748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/01/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Since strong polarity usually causes emission quenching, materials with polarity-induced emission (PIE) are rarely reported despite their important applications in polar environments. Herein, an N-phenylcarbazole-substituted benzophenone derivative (BP-3-Cz) with a twisted electron donor-acceptor (D-A) structure is synthesized. The incorporation of heteroatoms into the twisted π-conjugated D-A backbone simultaneously endows BP-3-Cz with obvious polarity- and pressure-induced emission. Spectral analysis, X-ray diffraction, differential scanning calorimetry, and quantum chemical calculation results confirm that BP-3-Cz has special optical features related to the molecular conformation change and excited state turning to planarized intramolecular charge transfer with an increase in polarity or applied pressure. These findings contribute to the understanding of the PIE mechanism and the design of new PIE materials.
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6
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Karuppusamy A, Sharma A, Thomas KRJ, Kannan P. Experimental and Theoretical Investigations on Chalcones Containing Pyrene. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Cappello D, Buguis FL, Boyle PD, Gilroy JB. Dual Emission, Aggregation, and Redox Properties of Boron Difluoride Hydrazones Functionalized with Triphenylamines. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Daniela Cappello
- The University of Western Ontario Department of Chemistry CANADA
| | | | - Paul D. Boyle
- The University of Western Ontario Department of Chemistry CANADA
| | - Joe B. Gilroy
- The University of Western Ontario Department of Chemistry 1151 Richmond St. N. N6A 5B7 London CANADA
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8
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Riga-Rocha BA, Machado AE, Neumann MG, Cavalheiro CC. Experimental and theoretical study of three newly-synthesized iminochalcones: An example of dual emission induced by polarity changes. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113725] [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]
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9
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Chukhlantseva AN, Dmitriev MV, Maiorova OA, Shklyaeva EV, Abashev GG. Synthesis and optical properties of new chalcones containing 4-[bis(2-hydroxyethyl)amino]phenyl fragment. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.03.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Kong J, Zhang W, Shao JY, Huo D, Niu X, Wan Y, Song D, Zhong YW, Xia A. Bridge-Length- and Solvent-Dependent Charge Separation and Recombination Processes in Donor-Bridge-Acceptor Molecules. J Phys Chem B 2021; 125:13279-13290. [PMID: 34814686 DOI: 10.1021/acs.jpcb.1c08308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The photoinduced intramolecular charge separation (CS) and charge recombination (CR) phenomena in a series of donor-bridge-acceptor (D-B-A) molecules are intensively investigated as a means of understanding electron transport through the π-B. Pyrene (Pyr) and triarylamine (TAA) moieties connected via phenylene Bs of various lengths are studied because their CS and CR behaviors can be readily monitored in real time by femtosecond transient absorption (fs-TA) spectroscopy. By combining the steady-state and fs-TA spectroscopic measurements in a variety of solvents together with chemical calculations, the parameters that govern the CS behaviors of these dyads were obtained, such as the solvent effects on free energy and the B-length-dependent electronic coupling (VDA) between D and A. We observed the sharp switch of the CS behavior with the increase of the solvent polarity and B-linker lengths. Furthermore, in the case of the shortest distance between D and A when the electron coupling is sufficiently large, we observed that the CS phenomenon occurs even in low-polar solvents. Upon increasing the length of B, CS occurs only in strong polar solvents. The distance-dependent decay constant of the CS rate is determined as ∼0.53 Å-1, indicating that CS is governed by superexchange tunneling interactions. The CS rate constants are also approximately estimated using Marcus electron transfer theory, and the results imply that the VDA value is the key factor dominating the CS rate, while the facile rotation of the phenylene B is important for modulating the lifetime of the charge-separated state in these D-B-A dyads. These results shed light on the practical strategy for obtaining a high CS efficiency with a long-lived CS state in TAA-B-Pyr derivatives.
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Affiliation(s)
- Jie Kong
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Wei Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Jiang-Yang Shao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Dayujia Huo
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Xinmiao Niu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yan Wan
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Di Song
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,School of Science, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, People's Republic of China
| | - Yu-Wu Zhong
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Andong Xia
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,School of Science, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, People's Republic of China
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11
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Paul S, Majumdar T, Mallick A. Hydrogen bond regulated hydrogen sulfate ion recognition: an overview. Dalton Trans 2021; 50:1531-1549. [PMID: 33439195 DOI: 10.1039/d0dt03611k] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Hydrogen sulfate possesses substantial biological importance, having a colossal impact on physiological and environmental events. Therefore, several scientific groups have devoted serious effort to the development of versatile colorimetric and fluorimetric HSO4- sensors. Along with the scope, challenges, and significance, this review emphasizes the advancement of the optical recognition of HSO4- based on hydrogen bonding during the past two decades. Moreover, hydrogen-bond-driven proton transfer, ESIPT, ICT, PET, CHEF, and TBET mechanisms that allow for the optical detection of HSO4- are also discussed concisely. The foundation of this review includes the key points of the sensing process, like the nature of spectroscopic changes, selectivity and sensitivity, naked-eye color changes, the reusability of sensors, and the in vivo detection of HSO4-, if any. Special attention is focused on the correlation between the photophysical changes and the underlying interaction mechanisms that triggered the recognition aspect.
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Affiliation(s)
- Suvendu Paul
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal-741235, India.
| | - Tapas Majumdar
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal-741235, India.
| | - Arabinda Mallick
- Department of Chemistry, Kazi Nazrul University, Asansol, West Bengal-713340, India.
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12
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Ding S, Xu A, Sun A, Xia Y, Liu Y. Substituent effect on ESIPT and hydrogen bond mechanism of N-(8-Quinolyl) salicylaldimine: A detailed theoretical exploration. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 245:118937. [PMID: 32977109 DOI: 10.1016/j.saa.2020.118937] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 08/18/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
The effects of substituent on excited-state intramolecular proton transfer (ESIPT) and hydrogen bonding of N-(8-Quinolyl) salicylaldimine (QS) have been studied by theoretical calculation with DFT and TDDFT. The representative electron-withdrawing nitryl and electron-donating methoxyl were selected to analyze the effects on geometries, intramolecular hydrogen bond interaction, absorption/fluorescence spectra, and the ESIPT process. The configurations of the three molecules (QS, QS-OMe and QS-NO2) were optimized in the ground and excited states. The structure parameters, infrared spectra, hydrogen bond interactions, frontier molecular orbitals, absorption/fluorescence spectra, and potential curves have cross-validated the current results. The results show that the introduction of substituent results in a bathochromic-shift of the absorption and fluorescence spectra with large Stokes shift, and is more beneficial to the ESIPT process. The current work will be beneficial to the improvement of ESIPT properties and deepen understanding of the mechanism of ESIPT process.
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Affiliation(s)
- Sha Ding
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China; School of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, China; Hunan Key Laboratory of Biomass Fiber Functional Materials, Hunan University of Technology, Zhuzhou 412007, China
| | - Aixiang Xu
- School of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Aokui Sun
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Yong Xia
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China; Hunan Key Laboratory of Biomass Fiber Functional Materials, Hunan University of Technology, Zhuzhou 412007, China; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Yuejun Liu
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
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13
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Junge MJ, Kordan MA, Chernick ET. Synthesis of Chiral Donor–Acceptor Dyes to Study Electron Transfer Across a Chiral Bridge. J Org Chem 2020; 85:13793-13807. [DOI: 10.1021/acs.joc.0c01914] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Marc J. Junge
- Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Mike A. Kordan
- Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Erin T. Chernick
- Department of Chemistry, University of Victoria, PO Box 1700 STN CSC Victoria, BC V8W 2Y2, Canada
- Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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14
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Shee J, Head-Gordon M. Predicting Excitation Energies of Twisted Intramolecular Charge-Transfer States with the Time-Dependent Density Functional Theory: Comparison with Experimental Measurements in the Gas Phase and Solvents Ranging from Hexanes to Acetonitrile. J Chem Theory Comput 2020; 16:6244-6255. [DOI: 10.1021/acs.jctc.0c00635] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- James Shee
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Martin Head-Gordon
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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15
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Aswathy PR, Sharma S, Tripathi NP, Sengupta S. Regioisomeric BODIPY Benzodithiophene Dyads and Triads with Tunable Red Emission as Ratiometric Temperature and Viscosity Sensors. Chemistry 2019; 25:14870-14880. [DOI: 10.1002/chem.201902952] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/17/2019] [Indexed: 02/06/2023]
Affiliation(s)
- P. R. Aswathy
- Department of Chemical SciencesIndian Institute of Science, Education and Research (IISER) Mohali Punjab 140306 India
| | - Sushil Sharma
- Department of Chemical SciencesIndian Institute of Science, Education and Research (IISER) Mohali Punjab 140306 India
| | - Narendra Pratap Tripathi
- Department of Chemical SciencesIndian Institute of Science, Education and Research (IISER) Mohali Punjab 140306 India
| | - Sanchita Sengupta
- Department of Chemical SciencesIndian Institute of Science, Education and Research (IISER) Mohali Punjab 140306 India
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16
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Tharmalingam B, Mathivanan M, Dhamodiran G, Saravana Mani K, Paranjothy M, Murugesapandian B. Star-Shaped ESIPT-Active Mechanoresponsive Luminescent AIEgen and Its On-Off-On Emissive Response to Cu 2+/S 2. ACS OMEGA 2019; 4:12459-12469. [PMID: 31460365 PMCID: PMC6682042 DOI: 10.1021/acsomega.9b00845] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 06/03/2019] [Indexed: 05/08/2023]
Abstract
Design and development of multifunctional materials have drawn incredible attraction in recent years. Herein, we report the design and construction of versatile star-shaped intramolecular charge transfer (ICT)-coupled excited-state intramolecular proton transfer (ESIPT)-active mechanoresponsive and aggregation-induced emissive (AIE) luminogen triaminoguanidine-diethylaminophenol (LH3 ) conjugate from simple precursors triaminoguanidine hydrochloride and 4-(N,N-diethylamino)salicylaldehyde. Solvent-dependent dual emission in nonpolar to polar protic solvents implies the presence of ICT-coupled ESIPT features in the excited state. Aggregation-enhanced emissive feature of LH3 was established in the CH3CN/water mixture. Furthermore, this compound exhibits mechanochromic fluorescence behavior upon external grinding. Fluorescence microscopy images of pristine, crystal, and crushed crystals confirm the naked-eye mechanoresponsive characteristics of LH3 . In addition, LH3 selectively sensed a Cu2+ ion through a colorimetric and fluorescence "turn-off" route, and subsequently, the LH3 -Cu2+ ensemble could act as a selective and sensitive sensor for S2- in a "turn-on" fluorescence manner via a metal displacement approach. Reversible "turn-off-turn-on" features of LH3 with Cu2+/S2- ions were efficiently demonstrated to construct the IMPLICATION logic gate function. The Cu2+/S2--responsive sensing behavior of LH3 was established in the paper strip experiment also, which can easily be characterized by the naked eye under daylight as well as a UV lamp (λ = 365 nm).
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Affiliation(s)
| | - Moorthy Mathivanan
- Department
of Chemistry, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| | - Ganesh Dhamodiran
- Department
of Chemistry, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| | | | - Manikandan Paranjothy
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342 037, Rajasthan, India
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17
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Niu X, Gautam P, Kuang Z, Yu CP, Guo Y, Song H, Guo Q, Chan JMW, Xia A. Intramolecular charge transfer and solvation dynamics of push-pull dyes with different π-conjugated linkers. Phys Chem Chem Phys 2019; 21:17323-17331. [PMID: 31353370 DOI: 10.1039/c9cp02559f] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The solvation-dependent excited state dynamics of two push-pull fluorophores with donor-π-acceptor (D-π-A) structures were investigated using steady-state and ultrafast transient absorption (TA) spectroscopy, backed by theoretical calculations. Identical D and A groups were present in both dyes, which differed only in the structure of their central π-conjugated linkers. Dye 1 features a p-phenylenediethynyl linker, while dye 2 contains a 2,5-diethynylthiophene linker. From the steady-state spectra, no appreciable shifts in absorption bands were observed, whereas large red-shifts in emission were seen with increasing solvent polarity, which indicated that the excited states were more polar than the ground state. Theoretical calculations support charge transfer from the triphenylamine (TPA) donor to the pentafluorosulfanyl (SF5) acceptor viaπ-conjugated linkers to form an intramolecular charge transfer (ICT) state. TA spectra revealed that a solvation-stabilized conformationally relaxed intramolecular charge transfer (ICT') state was formed in polar solvents, but only an ICT state was observed in nonpolar solvent. The SE band was quenched within 1 ps in high-polarity solvent, which corresponds to the low fluorescence quantum yield. It can be concluded that the dye with the p-phenylenediethynyl π-linker (i.e., dye 1) exhibits a larger degree of ICT than the thiophene analogue (i.e., dye 2). These findings demonstrate how solvation can fine-tune the photophysical properties of push-pull dyes, and this study highlights the importance of π-conjugated linkers in the excited state ICT process.
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Affiliation(s)
- Xinmiao Niu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China. and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Prabhat Gautam
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie Pvt., Ottawa, Ontario K1N 6N5, Canada.
| | - Zhuoran Kuang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China. and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Craig P Yu
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie Pvt., Ottawa, Ontario K1N 6N5, Canada.
| | - Yuanyuan Guo
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China. and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Hongwei Song
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China. and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Qianjin Guo
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
| | - Julian M W Chan
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie Pvt., Ottawa, Ontario K1N 6N5, Canada.
| | - Andong Xia
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China. and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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18
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Ghosh R, Nandi A, Kushwaha A, Das D. Ultrafast Conformational Relaxation Dynamics in Anthryl-9-benzothiazole: Dynamic Planarization Driven Delocalization and Protonation-Induced Twisting Dynamics. J Phys Chem B 2019; 123:5307-5315. [DOI: 10.1021/acs.jpcb.9b01373] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rajib Ghosh
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Amitabha Nandi
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Archana Kushwaha
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
| | - Dipanwita Das
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
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19
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Li H, Han J, Zhao H, Liu X, Luo Y, Shi Y, Liu C, Jin M, Ding D. Lighting Up the Invisible Twisted Intramolecular Charge Transfer State by High Pressure. J Phys Chem Lett 2019; 10:748-753. [PMID: 30704239 DOI: 10.1021/acs.jpclett.9b00026] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The twisted intramolecular charge transfer (TICT) state plays an important role in determining the performance of optoelectronic devices. However, for some nonfluorescent TICT molecules, the "invisible" TICT state could only be visualized by modifying the molecular structure. Here, we introduce a new facile pressure-induced approach to light up the TICT state through the use of a pressure-related liquid-solid phase transition of the surrounding solvent. Combining ultrafast spectroscopy and quantum chemical calculations, it reveals that the "invisible" TICT state can emit fluorescence when the rotation of a donor group is restricted by the frozen acetonitrile solution. Furthermore, the TICT process can even be effectively regulated by the external pressure. Our study offers a unique strategy to achieve dual fluorescence behavior in charge transfer molecules and is of significance for optoelectronic and biomedical applications.
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Affiliation(s)
- Hui Li
- Institute of Atomic and Molecular Physics , Jilin University , Changchun 130012 , China
| | - Jianhui Han
- Institute of Atomic and Molecular Physics , Jilin University , Changchun 130012 , China
| | - Huifang Zhao
- Institute of Atomic and Molecular Physics , Jilin University , Changchun 130012 , China
| | - Xiaochun Liu
- Institute of Atomic and Molecular Physics , Jilin University , Changchun 130012 , China
| | - Yi Luo
- Hefei National Laboratory for Physical Sciences at the Microscale , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Ying Shi
- Institute of Atomic and Molecular Physics , Jilin University , Changchun 130012 , China
| | - Cailong Liu
- Institute of Atomic and Molecular Physics , Jilin University , Changchun 130012 , China
| | - Mingxing Jin
- Institute of Atomic and Molecular Physics , Jilin University , Changchun 130012 , China
| | - Dajun Ding
- Institute of Atomic and Molecular Physics , Jilin University , Changchun 130012 , China
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20
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Ma X, Liu L, Wang J, Xi X, Xie X, Wang H. Rhodium-Catalyzed Annulation of α-Imino Carbenes with α,β-Unsaturated Ketones: Construction of Multisubstituted 2,3-Dihydropyrrole/pyrrole Rings. J Org Chem 2018; 83:14518-14526. [DOI: 10.1021/acs.joc.8b01835] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Xueji Ma
- Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China
| | - Li Liu
- Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China
| | - Jiaying Wang
- Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China
| | - Xianglin Xi
- Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China
| | - Xuemei Xie
- Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China
| | - Hangxiang Wang
- The First Affiliated Hospital; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou 310003, China
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21
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Klemens T, Świtlicka A, Szlapa-Kula A, Krompiec S, Lodowski P, Chrobok A, Godlewska M, Kotowicz S, Siwy M, Bednarczyk K, Libera M, Maćkowski S, Pędziński T, Schab-Balcerzak E, Machura B. Experimental and computational exploration of photophysical and electroluminescent properties of modified 2,2′:6′,2″-terpyridine, 2,6-di(thiazol-2-yl)pyridine and 2,6-di(pyrazin-2-yl)pyridine ligands and their Re(I) complexes. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4611] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tomasz Klemens
- Institute of Chemistry; University of Silesia; 9 Szkolna Str. 40-006 Katowice Poland
| | - Anna Świtlicka
- Institute of Chemistry; University of Silesia; 9 Szkolna Str. 40-006 Katowice Poland
| | - Agata Szlapa-Kula
- Institute of Chemistry; University of Silesia; 9 Szkolna Str. 40-006 Katowice Poland
| | - Stanisław Krompiec
- Institute of Chemistry; University of Silesia; 9 Szkolna Str. 40-006 Katowice Poland
| | - Piotr Lodowski
- Institute of Chemistry; University of Silesia; 9 Szkolna Str. 40-006 Katowice Poland
| | - Anna Chrobok
- Faculty of Chemistry; Silesian University of Technology; 9 Strzody Str. 44-100 Gliwice Poland
| | - Magdalena Godlewska
- Mass Spectrometry Group, Institute of Organic Chemistry, Polish Academy of Sciences; Kasprzaka 44/52, PO Box 58 01-224 Warszawa Poland
| | - Sonia Kotowicz
- Institute of Chemistry; University of Silesia; 9 Szkolna Str. 40-006 Katowice Poland
| | - Mariola Siwy
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Sklodowska Str. 41-819 Zabrze Poland
| | - Katarzyna Bednarczyk
- Institute of Chemistry; University of Silesia; 9 Szkolna Str. 40-006 Katowice Poland
| | - Marcin Libera
- Institute of Chemistry; University of Silesia; 9 Szkolna Str. 40-006 Katowice Poland
| | - Sebastian Maćkowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University; 5 Grudziądzka Str. 87-100 Torun Poland
| | - Tomasz Pędziński
- Faculty of Chemistry; Adam Mickiewicz University in Poznań; 89b Umultowska 61-614 Poznań Poland
| | - Ewa Schab-Balcerzak
- Institute of Chemistry; University of Silesia; 9 Szkolna Str. 40-006 Katowice Poland
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Sklodowska Str. 41-819 Zabrze Poland
| | - Barbara Machura
- Institute of Chemistry; University of Silesia; 9 Szkolna Str. 40-006 Katowice Poland
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22
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Liu T, Zhang G, Evans RE, Trindle CO, Altun Z, DeRosa CA, Wang F, Zhuang M, Fraser CL. Phosphorescence Tuning through Heavy Atom Placement in Unsymmetrical Difluoroboron β‐Diketonate Materials. Chemistry 2018; 24:1859-1869. [DOI: 10.1002/chem.201703513] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Tiandong Liu
- Department of Chemistry University of Virginia McCormick Road Charlottesville VA 22904 USA
| | - Guoqing Zhang
- Department of Chemistry University of Virginia McCormick Road Charlottesville VA 22904 USA
- Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei, Anhui 230026 P. R. China
| | - Ruffin E. Evans
- Department of Chemistry University of Virginia McCormick Road Charlottesville VA 22904 USA
- Department of Physics Harvard University Cambridge MA 02138 USA
| | - Carl O. Trindle
- Department of Chemistry University of Virginia McCormick Road Charlottesville VA 22904 USA
| | - Zikri Altun
- Department of Physics Marmara University Göztepe Kampus Istanbul 34772 Turkey
| | - Christopher A. DeRosa
- Department of Chemistry University of Virginia McCormick Road Charlottesville VA 22904 USA
| | - Fang Wang
- Department of Chemistry University of Virginia McCormick Road Charlottesville VA 22904 USA
| | - Meng Zhuang
- Department of Chemistry University of Virginia McCormick Road Charlottesville VA 22904 USA
| | - Cassandra L. Fraser
- Department of Chemistry University of Virginia McCormick Road Charlottesville VA 22904 USA
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23
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Sengupta S, Pandey UK. Dual emissive bodipy–benzodithiophene–bodipy TICT triad with a remarkable Stokes shift of 194 nm. Org Biomol Chem 2018; 16:2033-2038. [DOI: 10.1039/c8ob00272j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An acceptor–donor–acceptor (A–D–A) triad based on BODIPY and benzodithiophene exhibited a high Stokes shift of ∼194 nm, TICT and high mobility of 4.46 × 10−4 cm2 V−1 s−1.
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Affiliation(s)
- Sanchita Sengupta
- Interdisciplinary Centre for Energy Research (ICER)
- Indian Institute of Science (IISc) Bangalore
- Bangalore 560012
- India
| | - Upendra K. Pandey
- Interdisciplinary Centre for Energy Research (ICER)
- Indian Institute of Science (IISc) Bangalore
- Bangalore 560012
- India
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24
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Ghosh R. Substituent control of the ultrafast twisted intramolecular charge transfer rate in dimethylaminochalcone derivatives. Phys Chem Chem Phys 2018; 20:6347-6353. [DOI: 10.1039/c7cp08239h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The rate of TICT relaxation in dimethylaminochalcone derivatives is shown to be controlled by acceptor strength. Variation in the charge pulling capacity of the acceptor modifies the torsional barrier along the TICT coordinate in the S1 state, resulting in a tunable TICT relaxation rate.
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Affiliation(s)
- Rajib Ghosh
- Radiation and Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
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25
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Zúñiga-Núñez D, Zamora RA, Barrias P, Tirapegui C, Poblete H, Cárdenas-Jirón G, Alarcon EI, Aspée A. Theoretical rationalisation of the photophysics of a TICT excited state of cinnamoyl–coumarin derivatives in homogeneous and biological membrane models. Phys Chem Chem Phys 2018; 20:27621-27629. [DOI: 10.1039/c8cp04963g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Analysis of the potential energy barriers and structural dynamics of a new TICT-probe for monitoring biological environments.
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Affiliation(s)
| | - Ricardo A. Zamora
- Facultad de Química y Biología
- Universidad de Santiago de Chile
- Santiago
- Chile
| | - Pablo Barrias
- Facultad de Química y Biología
- Universidad de Santiago de Chile
- Santiago
- Chile
| | - Cristian Tirapegui
- Facultad de Química y Biología
- Universidad de Santiago de Chile
- Santiago
- Chile
| | - Horacio Poblete
- Center for Bioinformatics and Molecular Simulation
- Universidad de Talca
- Talca
- Chile
- Núcleo Científico Multidisciplinario
| | | | - Emilio I. Alarcon
- Bio-nanomaterials Chemistry and Engineering Laboratory
- Division of Cardiac Surgery
- University of Ottawa Heart Institute
- Ottawa
- Canada
| | - Alexis Aspée
- Facultad de Química y Biología
- Universidad de Santiago de Chile
- Santiago
- Chile
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26
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Zahid NI, Mahmood MS, Subramanian B, Mohd Said S, Abou-Zied OK. New Insight into the Origin of the Red/Near-Infrared Intense Fluorescence of a Crystalline 2-Hydroxychalcone Derivative: A Comprehensive Picture from the Excited-State Femtosecond Dynamics. J Phys Chem Lett 2017; 8:5603-5608. [PMID: 29094952 DOI: 10.1021/acs.jpclett.7b02601] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Fluorescence upconversion and transient absorption techniques are used to explain the source of the intense red/near-infrared emission of crystalline 4-dimethylamino-2'-hydroxychalcone. We found that the initially excited enol form undergoes tautomerization in 3 ps to form the keto tautomer. The latter is stable in the ground state as a consequence of J-type aggregation in the crystal packing and is manifested in an absorption peak at 550 nm that spectrally overlaps with the short-lived enol emission, leading to self-reabsorption and adding a factor to the complete depletion of the enol emission. Relaxation of the keto tautomer takes place in the form of intense fluorescence (600-750 nm) with 1.7 ns lifetime. The different spectroscopy in solution is due to vibrational cooling (300 fs), followed by solvation dynamics (5 ps in methanol) and twisting of the hydroxyphenyl ring (16 ps), before relaxation of the enol tautomer in the form of weak green fluorescence with 350 ps lifetime.
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Affiliation(s)
- N Idayu Zahid
- Department of Chemistry, Faculty of Science, Sultan Qaboos University , P.O. Box 36, Postal Code 123, Muscat, Sultanate of Oman
- Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly, Department of Chemistry, Faculty of Science, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Mohamad Syafie Mahmood
- Department of Electrical Engineering, Faculty of Engineering, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Balamurugan Subramanian
- Department of Electrical Engineering, Faculty of Engineering, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Suhana Mohd Said
- Department of Electrical Engineering, Faculty of Engineering, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Osama K Abou-Zied
- Department of Chemistry, Faculty of Science, Sultan Qaboos University , P.O. Box 36, Postal Code 123, Muscat, Sultanate of Oman
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27
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Ghosh R, Kushwaha A, Das D. Conformational Control of Ultrafast Molecular Rotor Property: Tuning Viscosity Sensing Efficiency by Twist Angle Variation. J Phys Chem B 2017; 121:8786-8794. [DOI: 10.1021/acs.jpcb.7b05947] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Rajib Ghosh
- Radiation
and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Archana Kushwaha
- Department
of Chemistry, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
| | - Dipanwita Das
- Department
of Chemistry, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
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28
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Asiri AM, Al-Dies AAM, Khan SA. Optical and Photophysical Investigation of (2E)-1-(2,5-Dimethylfuran-3-Yl)-3-(9-Ethyl-9H-Carbazol-3-Yl)Prop-2-en-1-One (DEPO) by Spectrofluorometer in Organized Medium. J Fluoresc 2017; 27:1487-1494. [PMID: 28447183 DOI: 10.1007/s10895-017-2088-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 04/04/2017] [Indexed: 11/28/2022]
Abstract
(2E)-1-(2,5-dimethylfuran-3-yl)-3-(9-ethyl-9H-carbazol-3-yl)prop-2-en-1-one (DEPO) was prepared by the reaction of 9-ethyl-9H-carbazole-3-carbaldehyde with 1-(2,5-dimethylfuran-3-yl)ethanone under microwave irradiation. The structure of DEPO was established experimentally by EI-MS, FT-IR, 1H and 13C NMR spectral studies. Electronic absorption and emission spectra of DEPO were studied in different solvents on the basis of polarities, and the obtain data were used to determine the solvatochromic properties such as extinction coefficient, oscillator strength, transition dipole moment, stokes shift, fluorescence quantum yield and photochemical quantum yield. Photochemical quantum yield (Φ c ) of DEPO dye was determined in different solvent. The dye comparatively photostable in DMSO but undergoes photodecomposition in chloro methane solvents. The DEPO dye may be use as probe or quencher to determine critical micelle concentration (CMC) of cetyltri methyl ammonium bromide (CTAB) and sodium dodecyl sulfate (SDS).
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Affiliation(s)
- Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia.,Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Al-Anood M Al-Dies
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Salman A Khan
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia.
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29
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Ghosh R, Manna B. Comparative photophysics and ultrafast dynamics of dimethylaminochalcone and a structurally rigid derivative: experimental identification of TICT coordinate. Phys Chem Chem Phys 2017; 19:23078-23084. [DOI: 10.1039/c7cp03461j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Restriction of torsional relaxation and solvent dependent competing photophysical dynamics of free and rigid dimethylaminochalcones were investigated by time resolved spectroscopy.
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Affiliation(s)
- Rajib Ghosh
- Radiation and Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
| | - Biswajit Manna
- Radiation and Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
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30
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Karunakaran V, Das S. Direct Observation of Cascade of Photoinduced Ultrafast Intramolecular Charge Transfer Dynamics in Diphenyl Acetylene Derivatives: Via Solvation and Intramolecular Relaxation. J Phys Chem B 2016; 120:7016-23. [DOI: 10.1021/acs.jpcb.6b05264] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Venugopal Karunakaran
- Photosciences
and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 001, India
| | - Suresh Das
- Photosciences
and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, Kerala, India
- Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560 064, India
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31
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Pozharskii AF, Ozeryanskii VA, Mikshiev VY, Antonov AS, Chernyshev AV, Metelitsa AV, Borodkin GS, Fedik NS, Dyablo OV. 10-Dimethylamino Derivatives of Benzo[h]quinoline and Benzo[h]quinazolines: Fluorescent Proton Sponge Analogues with Opposed peri-NMe2/–N═ Groups. How to Distinguish between Proton Sponges and Pseudo-Proton Sponges. J Org Chem 2016; 81:5574-87. [DOI: 10.1021/acs.joc.6b00917] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander F. Pozharskii
- Department
of Chemistry, Southern Federal University, Zorge str. 7, 344090 Rostov-on-Don, Russian Federation
| | - Valery A. Ozeryanskii
- Department
of Chemistry, Southern Federal University, Zorge str. 7, 344090 Rostov-on-Don, Russian Federation
| | - Vladimir Y. Mikshiev
- Department
of Chemistry, Southern Federal University, Zorge str. 7, 344090 Rostov-on-Don, Russian Federation
| | - Alexander S. Antonov
- Department
of Chemistry, Southern Federal University, Zorge str. 7, 344090 Rostov-on-Don, Russian Federation
| | - Anatoly V. Chernyshev
- Institute
of Physical and Organic Chemistry, Southern Federal University, Stachki
Ave. 194/2, 344090 Rostov-on-Don, Russian Federation
| | - Anatoly V. Metelitsa
- Institute
of Physical and Organic Chemistry, Southern Federal University, Stachki
Ave. 194/2, 344090 Rostov-on-Don, Russian Federation
| | - Gennady S. Borodkin
- Institute
of Physical and Organic Chemistry, Southern Federal University, Stachki
Ave. 194/2, 344090 Rostov-on-Don, Russian Federation
| | - Nikita S. Fedik
- Department
of Chemistry, Southern Federal University, Zorge str. 7, 344090 Rostov-on-Don, Russian Federation
| | - Olga V. Dyablo
- Department
of Chemistry, Southern Federal University, Zorge str. 7, 344090 Rostov-on-Don, Russian Federation
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32
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Nandi A, Ghosh R, Palit DK. Excited state relaxation pathways of 4-dimethylamino-β-nitrostyrene: Effect of solvent polarity and donor–acceptor conjugation. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.02.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Ghosh R, Nandi A, Palit DK. Solvent sensitive intramolecular charge transfer dynamics in the excited states of 4-N,N-dimethylamino-4′-nitrobiphenyl. Phys Chem Chem Phys 2016; 18:7661-71. [DOI: 10.1039/c5cp07778h] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solvent sensitive excited state dynamics of DNBP is explored. In polar solvents, the ultrafast barrierless TICT process is the major relaxation pathway, whereas, in nonpolar solvents the excited state undergoes the PICT process, followed by efficient intersystem crossing to the triplet state.
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Affiliation(s)
- Rajib Ghosh
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Amitabha Nandi
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Dipak K. Palit
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
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