1
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Chawla S, Dhamija S, Bhutani G, De AK. On the nature of initial solvation in bulk polar liquids: Gaussian or exponential? J Chem Phys 2024; 161:064201. [PMID: 39132795 DOI: 10.1063/5.0218336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Accepted: 07/22/2024] [Indexed: 08/13/2024] Open
Abstract
Measurement of time evolution of fluorescence of a probe solute has been a quintessential technique to quantify how dipolar solvent molecules dynamically minimize the free energy of an electronically excited probe. During such solvation dynamics in bulk liquids, a substantial part of relaxation was shown to complete within sub-100 fs from time-gated fluorescence measurements, as also predicted by molecular dynamics simulation studies. However, equivalent quantification of solvation timescales by femtosecond pump-probe and broadband fluorescence measurements revealed an exponential nature of this initial relaxation having quite different timescales. Here, we set out to unveil the reason behind these puzzling contradictions. We introduce a method for estimating probe wavelength-dependent instrument response and demonstrate that the observation of the Gaussian vs exponential nature of initial relaxation is indeed dependent on the method of data analysis. These findings call for further experimental investigation and parallel development of theoretical models to elucidate the molecular-level mechanism accounting for different types of early time solvation.
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Affiliation(s)
- Sakshi Chawla
- Condensed Phase Dynamics Group, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Punjab 140 306, India
| | - Shaina Dhamija
- Condensed Phase Dynamics Group, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Punjab 140 306, India
| | - Garima Bhutani
- Condensed Phase Dynamics Group, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Punjab 140 306, India
| | - Arijit Kumar De
- Condensed Phase Dynamics Group, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Punjab 140 306, India
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2
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Srivastava S, Sinha S, Bhattacharjee S, Seth D. Solute dynamics of a hydrophobic molecule in a menthol-thymol based type-V deep eutectic solvent: effect of composition of the components. Phys Chem Chem Phys 2024; 26:12638-12651. [PMID: 38597695 DOI: 10.1039/d4cp00088a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Type-V deep eutectic solvents (DESs) are a newly emerging unique class of solvents obtained by physical mixing and heating of non-ionic components. These solvents show deviation from the thermodynamic ideality. Compared to type-I to IV DESs, type-V DESs are less explored and their physical chemistry is in its nascent stage. In this work, we have chosen a type-V DES based on menthol-thymol (MT) for our working media. Solvent and rotational dynamics were studied with varying temperature using a well-known solvatochromic probe, Coumarin 153 (C153). We prepared the MT-based DES using a reported procedure at three molar ratios: 1 : 1 (M1T1), 1 : 1.5 (M1T1.5), and 2 : 1 (M2T1) of menthol (M) and thymol (T). Time-resolved emission spectra (TRES) were constructed with varying temperature. Utilizing TRES, the decay of the solvent correlation function (C(t)) was plotted. We have correlated the solvent relaxation time in these DESs as a function of viscosity. The time-resolved anisotropy decays were also collected to perceive the rotational relaxation dynamics of C153 as a function of temperature. The decay of solvent relaxation was found to be bi-exponential, and the average solvation time (〈τs〉) in M2T1 was found to be longer than those of M1T1.5 and M1T1. The rotational reorientation times (〈τrot〉) also follow the same trend. We have analysed the rotational dynamics of C153 in type-V DESs employing the Stokes-Einstein-Debye (SED) hydrodynamic model. The rotational dynamics in DESs demonstrate a good correlation with the SED model with a little deviation. In MT-based DESs, the solute's rotational relaxation times approach hydrodynamic stick boundary condition at low viscosity (or at high temperatures) for all molar compositions. Using the Arrhenius-type equations, we have correlated the activation energies for the rotational motion of C153, along with the viscous flow and non-radiative pathways for all the DESs.
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Affiliation(s)
- Sagar Srivastava
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801103, Bihar, India.
| | - Sapana Sinha
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801103, Bihar, India.
| | - Sanyukta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801103, Bihar, India.
| | - Debabrata Seth
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801103, Bihar, India.
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3
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Cui E, Liu H, Wang Z, Chen H, Weng YX. Femtosecond fluorescence conical optical parametric amplification spectroscopy. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2024; 95:033008. [PMID: 38517256 DOI: 10.1063/5.0197254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 02/29/2024] [Indexed: 03/23/2024]
Abstract
Parametric superfluorescence (PSF), which originated from the optical amplification of vacuum quantum noise, is the primary noise source of femtosecond fluorescence non-collinear optical parametric amplification spectroscopy (FNOPAS). It severely affects the detection limit of FNOPAS to collect the femtosecond time-resolved spectra of extremely weak fluorescence. Here, we report the development of femtosecond fluorescence conical optical parametric amplification spectroscopy (FCOPAS), aimed at effectively suppressing the noise fluctuation from the PSF background. In contrast to traditional FNOPAS configurations utilizing lateral fluorescence collection and dot-like parametric amplification, FCOPAS employs an innovative conical fluorescence collection and ring-like amplification setup. This design enables effective cancellation of noise fluctuation across the entire PSF ring, resulting in an approximate order of magnitude reduction in PSF noise compared to prior FNOPAS outcomes. This advancement enables the resolution of transient fluorescence spectra of 4-dicyanomethylene-2-methyl-6-p-dimethylaminostyryl-4H-pyran (DCM) dye molecules in ethanol, even at an optically dilute concentration of 10-6 mol/l, with significantly enhanced signal-to-noise ratios. This improvement will be significant for extremely weak fluorescence detection on the femtosecond time scale.
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Affiliation(s)
- Ennan Cui
- The Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Science, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Heyuan Liu
- The Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Science, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Zhuan Wang
- The Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Hailong Chen
- The Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Science, University of the Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Yu-Xiang Weng
- The Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Science, University of the Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
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4
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Lamas I, Montero R, Martínez-Martínez V, Longarte A. Photodynamics of azaindoles in polar media: the influence of the environment. Phys Chem Chem Phys 2024; 26:3240-3252. [PMID: 38193884 DOI: 10.1039/d3cp03412g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
We have studied the relaxation dynamics of a family of azaindole (AI) structural isomers, 4-, 5-, 6- and 7-AI, by steady-state and time-resolved methods (fs-transient absorption and fluorescence up-conversion), in solvents of different polarity. The measurements in aprotic solvents show distinctive fluorescence yields and excited state lifetimes among the isomers, which are tuned by the polarity of the medium. Guided by simple TD-DFT calculations and based on the behavior observed in the isolated species, it has been possible to address the influence of the environment polarity on the relaxation route. According to the obtained picture, the energy of the nπ* state, which is strongly dependent on the position of the pyridinic nitrogen, controls the rate of the internal conversion channel that accounts for the distinctive photophysical behavior of the isomers. On the other hand, preliminary measurements in protic media (methanol) show a very different photodynamical behavior, in which the anomalous measured fluorescent patterns are very likely the result of reactive channels (proton transfer) triggered by the electronic excitation.
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Affiliation(s)
- Iker Lamas
- Departamento de Química-Física Facultad de Ciencia y Tecnología. Universidad del País Vasco (UPV/EHU) Apart. 644, 48080 Bilbao, Spain.
| | - Raúl Montero
- SGIKER Laser Facility Facultad de Ciencia y Tecnología. Universidad del País Vasco (UPV/EHU) 48940, Leioa, Spain.
| | - Virginia Martínez-Martínez
- Departamento de Química-Física Facultad de Ciencia y Tecnología. Universidad del País Vasco (UPV/EHU) Apart. 644, 48080 Bilbao, Spain.
| | - Asier Longarte
- Departamento de Química-Física Facultad de Ciencia y Tecnología. Universidad del País Vasco (UPV/EHU) Apart. 644, 48080 Bilbao, Spain.
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5
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Lee SN, Ahn J, Joo T. Coherent Vibrational Spectrum via Time-Resolved Fluorescence for Molecular Dynamics and Identification of Emitting Species-Application to Excited-State Intramolecular Proton Transfer. J Phys Chem A 2022; 126:4962-4968. [PMID: 35856811 DOI: 10.1021/acs.jpca.2c03263] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Time-resolved fluorescence (TF) with high-enough resolution enables recording of a coherent vibrational spectrum (CVS). Because a CVS attained via TF (CVSF) is descended from the frequency modulation of the fluorescence spectrum, it gives the vibrational spectrum of the emitting state. Therefore, CVSF can be a powerful tool for the identification of an emitting state along with the investigation of molecular dynamics in excited states. Herein, we report CVSF of a Schiff base salicylaldehyde azine (SAA) that has two possible excited-state intramolecular proton transfer (ESIPT) sites. The ESIPT time of SAA in dichloromethane is determined to be 22 fs. Quantitative agreement between the experimental CVSF and calculated CVSF of the mono-keto isomer demonstrates that ESIPT indeed occurs in SAA only on one side. More importantly, we show that a CVSF can be utilized to identify an emitting species and its state with the help of quantum chemical calculations. Implications of the CVSF obtained by assuming impulsive excitation of vibrations are discussed in terms of the molecular mechanism of ESIPT and the generation of nuclear wave packets in the product state.
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Affiliation(s)
- Seung Noh Lee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Jungsoo Ahn
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Taiha Joo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
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6
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Somashekharappa GM, Paul M, Govind C, Mathew R, Karunakaran V. Ultrafast Intermolecular Interaction Dynamics between NIR-Absorbing Unsymmetrical Squaraines and PCBM: Effects of Halogen Substitution. J Phys Chem B 2022; 126:4509-4519. [PMID: 35679578 DOI: 10.1021/acs.jpcb.1c10840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Among near-infrared (NIR) dyes, squaraine derivatives are applied as efficient sensitizers in optoelectronic and biomedical devices due to their simple synthesis, intense absorption, and emission and exceptional photochemical stability. The fundamental understanding of the structure-property relationships of sensitizers provides the insight to increase the efficiency of such devices. Here, unsymmetrical squaraine derivatives (ABSQs) with donor-acceptor-donor (D-A-D') architectures having N,N-dimethyl amino anthracene and benzothiazole (ABSQ-H) halogenated with fluoride (ABSQ-F), chloride (ABSQ-Cl), and bromide (ABSQ-Br) were synthesized to understand the effect of halogen on the photophysical properties and intermolecular interaction dynamics with phenyl-C61-butyric acid methyl ester (PCBM), which is used widely as an electron acceptor in bulk heterojunction-based devices. Interestingly, ABSQ-H exhibited intense absorption (ε ∼ 6.72 × 104 M-1 cm-1) spectra centered at ∼660 nm. Upon halogen substitution, a bathochromic shift in the absorption spectra with an increase of molar absorptivity was observed (ε ∼ 8.59 × 104 M-1 cm-1), which is beneficial for NIR light harvesting. The femtosecond transient absorption spectra of ABSQs revealed that the polarity of the solvent controlled the excited-state relaxation dynamics. Upon addition of PCBM, the fluorescence intensity and dynamics of halogenated ABSQs were quenched, and the formation of a squaraine radical cation was observed, reflecting the occurrence of intermolecular charge-transfer dynamics between ABSQs and PCBM. Thus, the observation of a bathochromic shift with intense absorption and an efficient intermolecular interaction with PCBM upon halogenation of ABSQs provide a design strategy for the development of unsymmetrical squaraine derivatives for bulk heterojunction-based optoelectronic devices.
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Affiliation(s)
- Guruprasad M Somashekharappa
- 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
| | - Megha Paul
- 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
| | - Ranimol Mathew
- 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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7
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Biswas S, Kim J, Zhang X, Scholes GD. Coherent Two-Dimensional and Broadband Electronic Spectroscopies. Chem Rev 2022; 122:4257-4321. [PMID: 35037757 DOI: 10.1021/acs.chemrev.1c00623] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Over the past few decades, coherent broadband spectroscopy has been widely used to improve our understanding of ultrafast processes (e.g., photoinduced electron transfer, proton transfer, and proton-coupled electron transfer reactions) at femtosecond resolution. The advances in femtosecond laser technology along with the development of nonlinear multidimensional spectroscopy enabled further insights into ultrafast energy transfer and carrier relaxation processes in complex biological and material systems. New discoveries and interpretations have led to improved design principles for optimizing the photophysical properties of various artificial systems. In this review, we first provide a detailed theoretical framework of both coherent broadband and two-dimensional electronic spectroscopy (2DES). We then discuss a selection of experimental approaches and considerations of 2DES along with best practices for data processing and analysis. Finally, we review several examples where coherent broadband and 2DES were employed to reveal mechanisms of photoinitiated ultrafast processes in molecular, biological, and material systems. We end the review with a brief perspective on the future of the experimental techniques themselves and their potential to answer an even greater range of scientific questions.
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Affiliation(s)
- Somnath Biswas
- Department of Chemistry, Princeton University, Princeton, New Jersey 08 544, United States
| | - JunWoo Kim
- Department of Chemistry, Princeton University, Princeton, New Jersey 08 544, United States
| | - Xinzi Zhang
- Department of Chemistry, Princeton University, Princeton, New Jersey 08 544, United States
| | - Gregory D Scholes
- Department of Chemistry, Princeton University, Princeton, New Jersey 08 544, United States
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8
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Capistran BA, Yuwono SH, Moemeni M, Maity S, Vahdani A, Borhan B, Jackson JE, Piecuch P, Dantus M, Blanchard GJ. Intramolecular Relaxation Dynamics Mediated by Solvent-Solute Interactions of Substituted Fluorene Derivatives. Solute Structural Dependence. J Phys Chem B 2021; 125:12486-12499. [PMID: 34752096 DOI: 10.1021/acs.jpcb.1c06475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Several fluorene derivatives exhibit excited-state reactivity and relaxation dynamics that remain to be understood fully. We report here the spectral relaxation dynamics of two fluorene derivatives to evaluate the role of structural modification in the intramolecular relaxation dynamics and intermolecular interactions that characterize this family of chromophores. We have examined the time-resolved spectral relaxation dynamics of two compounds, NCy-FR0 and MK-FR0, in protic and aprotic solvents using steady-state and time-resolved emission spectroscopy and quantum chemical computations. Both compounds exhibit spectral relaxation characteristics similar to those seen in FR0, indicating that hydrogen bonding interactions between the chromophore and solvent protons play a significant role in determining the relaxation pathways available to three excited electronic states.
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Affiliation(s)
- Briana A Capistran
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Stephen H Yuwono
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Mehdi Moemeni
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Soham Maity
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Aria Vahdani
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Babak Borhan
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - James E Jackson
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Piotr Piecuch
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States.,Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, United States
| | - Marcos Dantus
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States.,Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, United States
| | - G J Blanchard
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
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9
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Lee C, Seo K, Kim M, Joo T. Coherent internal conversion from high lying electronic states to S 1 in boron-dipyrromethene derivatives. Phys Chem Chem Phys 2021; 23:25200-25209. [PMID: 34730576 DOI: 10.1039/d1cp03513d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Internal conversion is the first step after photoexcitation to high lying electronic states, and plays a central role in many photoinduced processes. In this report, we demonstrate a truly ultrafast internal conversion (IC) in large molecules by time-resolved fluorescence (TF). Following photoexcitation to the Sn (n ≥ 2) state, TF of the S1 state was recorded for two boron-dipyrromethene (BODIPY) derivatives in solution. IC to S1 takes place nearly instantaneously within 20 fs for both molecules. Abundant nuclear wave packet motions in the S1 state are manifest in the TF signals, which demonstrates that the IC in these BODIPY molecules is coherent with respect to most of the vibrational modes. Theoretical calculations assuming impulsive IC to S1 account for the wave packet dynamics accurately.
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Affiliation(s)
- Changmin Lee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
| | - Kiho Seo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
| | - Munnyon Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
| | - Taiha Joo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
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10
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Capistran BA, Yuwono SH, Moemeni M, Maity S, Vahdani A, Borhan B, Jackson JE, Piecuch P, Dantus M, Blanchard GJ. Excited-State Dynamics of a Substituted Fluorene Derivative. The Central Role of Hydrogen Bonding Interactions with the Solvent. J Phys Chem B 2021; 125:12242-12253. [PMID: 34726920 PMCID: PMC9254887 DOI: 10.1021/acs.jpcb.1c06474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Substituted fluorene structures have demonstrated unusual photochemical properties. Previous reports on the substituted fluorene Schiff base FR0-SB demonstrated super photobase behavior with a ΔpKb of ∼14 upon photoexcitation. In an effort to understand the basis for this unusual behavior, we have examined the electronic structure and relaxation dynamics of the structural precursor of FR0-SB, the aldehyde FR0, in protic and aprotic solvents using time-resolved fluorescence spectroscopy and quantum chemical calculations. The calculations show three excited singlet states in relatively close energetic proximity. The spectroscopic data are consistent with relaxation dynamics from these electronic states that depend on the presence and concentration of solvent hydroxyl functionality. These results underscore the central role of solvent hydrogen bonding to the FR0 aldehyde oxygen in mediating the relaxation dynamics within this molecule.
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Affiliation(s)
- Briana A Capistran
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Stephen H Yuwono
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Mehdi Moemeni
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Soham Maity
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Aria Vahdani
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Babak Borhan
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - James E Jackson
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Piotr Piecuch
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, United States
| | - Marcos Dantus
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, United States
| | - G J Blanchard
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
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11
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Nature of Linear Spectral Properties and Fast Electronic Relaxations in Green Fluorescent Pyrrolo[3,4-c]Pyridine Derivative. Int J Mol Sci 2021; 22:ijms22115592. [PMID: 34070488 PMCID: PMC8197551 DOI: 10.3390/ijms22115592] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/19/2021] [Accepted: 05/20/2021] [Indexed: 11/16/2022] Open
Abstract
The electronic nature of 4-hydroxy-1H-pyrrolo[3,4-c]pyridine-1,3,6(2H,5H)-trione (HPPT) was comprehensively investigated in liquid media at room temperature using steady-state and time-resolved femtosecond transient absorption spectroscopic techniques. The analysis of the linear photophysical and photochemical parameters of HPPT, including steady-state absorption, fluorescence and excitation anisotropy spectra, along with the lifetimes of fluorescence emission and photodecomposition quantum yields, revealed the nature of its large Stokes shift, specific changes in the permanent dipole moments under electronic excitation, weak dipole transitions with partially anisotropic character, and high photostability. Transient absorption spectra of HPPT were obtained with femtosecond resolution and no characteristic solvate relaxation processes in protic (methanol) solvent were revealed. Efficient light amplification (gain) was observed in the fluorescence spectral range of HPPT, but no super-luminescence and lasing phenomena were detected. The electronic structure of HPPT was also analyzed with quantum-chemical calculations using a DFT/B3LYP method and good agreement with experimental data was shown. The development and investigation of new pyrrolo[3,4-c]pyridine derivatives are important due to their promising fluorescent properties and potential for use in physiological applications.
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12
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Lee C, Chung S, Song H, Rhee YM, Lee E, Joo T. Excited State Proton Transfer of Quinone Cyanine 9: Implications on the Origin of Super‐Photoacidity. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Changmin Lee
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Seyoung Chung
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Hayoung Song
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Young Min Rhee
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Eunsung Lee
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Taiha Joo
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
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13
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Lu J, Lee Y, Anna JM. Extracting the Frequency-Dependent Dynamic Stokes Shift from Two-Dimensional Electronic Spectra with Prominent Vibrational Coherences. J Phys Chem B 2020; 124:8857-8867. [DOI: 10.1021/acs.jpcb.0c05522] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jiawei Lu
- University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104, United States
| | - Yumin Lee
- University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104, United States
| | - Jessica M. Anna
- University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104, United States
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14
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Silori Y, Seliya P, De AK. Ultrafast Excited-State Dynamics of Tricarbocyanine Dyes Probed by Two-Dimensional Electronic Spectroscopy: Polar Solvation vs Photoisomerization. J Phys Chem B 2020; 124:6825-6834. [DOI: 10.1021/acs.jpcb.0c01333] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yogita Silori
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Punjab 140 306, India
| | - Pankaj Seliya
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Punjab 140 306, India
| | - Arijit K. De
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Punjab 140 306, India
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15
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Hossain SS, Paul S, Samanta A. Complete Solvation Dynamics of Coumarin 153 in Tetraalkylammonium Bromide-Based Deep Eutectic Solvents. J Phys Chem B 2020; 124:2473-2481. [DOI: 10.1021/acs.jpcb.0c00594] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Sk Saddam Hossain
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Sneha Paul
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Anunay Samanta
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
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16
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Popov AV, Hernandez R. Solvation Dynamics in the Cybotactic Region of Gas-Expanded Liquids: A Decade Later. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b03682] [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]
Affiliation(s)
- Alexander V. Popov
- Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Rigoberto Hernandez
- Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218, United States
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17
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Sohn SH, Heo W, Lee C, Kim J, Joo T. Electronic and Structural Dynamics of Dicyanoaurate Trimer in Excited State. J Phys Chem A 2019; 123:6904-6910. [DOI: 10.1021/acs.jpca.9b05613] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- So Hyeong Sohn
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Wooseok Heo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Changmin Lee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Joonghan Kim
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, South Korea
| | - Taiha Joo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
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18
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Heo W, Joo T. Molecular Dynamics of Excited State Intramolecular Charge Transfer in Solution by Coherent Nuclear Wave Packets. Chemphyschem 2019; 20:1448-1455. [PMID: 30974028 DOI: 10.1002/cphc.201801103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 04/11/2019] [Indexed: 11/09/2022]
Abstract
Revealing a proper reaction coordinate in a chemical reaction is the key step towards elucidation of the molecular reaction dynamics. In this report, we investigated the dynamics of intramolecular charge transfer (ICT) of 8-aminopyrene-1,3,6-trisulfonic acid (APTS) occurring in the excited state by time-resolved fluorescence (TF) and TF spectra. Accurate reaction rates and rate-dependent nuclear wave packets in the product state allow detailed investigation of the molecular reaction dynamics. The ICT rate is solvent dependent: (34 fs)-1 , (87 fs)-1 , and (∞)-1 in water, formamide, and dimethylformamide, respectively. By recording spectra of the nuclear wave packets for different reaction rates, chemical species responsible for the emission spectra can be positively identified. The origin of the wave packets can be deduced from the amplitude change of the wave packets at different reaction rates, and the vibrational modes that are associated with the reaction coordinate could be identified. Theoretical calculations of the vibrational reorganization energies reproduce the experimental spectrum of the nuclear wave packets and corroborate the conclusions.
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Affiliation(s)
- Wooseok Heo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Taiha Joo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
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19
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Chung S, Choi SM, Rhee YM. Exploring the Possibility of Excited State Keto‐Enolate Transformation of the Oxyluciferin‐Luciferase Complex with QM/MM Free Energy Simulations. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Seyoung Chung
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 Korea
| | - Sun Mi Choi
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 Korea
| | - Young Min Rhee
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Korea
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20
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Seo K, Eom I, Shim S, Kim CH, Joo T. Ring Closure Reaction Pathway of a Diarylethene in Solution Using Femtosecond Time‐resolved Fluorescence Spectra. B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11689] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kiho Seo
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 South Korea
| | - Intae Eom
- Pohang Accelerator Laboratory Pohang 37673 South Korea
| | - Sangdeok Shim
- Department of ChemistrySunchon National University Sunchon 57922 South Korea
| | - Chul Hoon Kim
- Department of Advanced Materials ChemistryKorea University Sejong 30019 South Korea
| | - Taiha Joo
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 South Korea
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21
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Kim J, Yoon TH, Cho M. Interferometric Measurement of Transient Absorption and Refraction Spectra with Dual Frequency Comb. J Phys Chem B 2018; 122:9775-9785. [PMID: 30273490 DOI: 10.1021/acs.jpcb.8b09262] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We demonstrate that a dual frequency comb-transient absorption (DFC-TA) technique can be combined with a time-domain interferometric detection to measure both the transient absorption and refraction spectra of molecules in solution. To do this, the pump-probe signal field of DFC-TA is allowed to interfere with a time-delayed local oscillator field in a time domain. We show that this DFC interferometric pump-probe spectroscopy (DFC-IPS) technique has a unique ability to extract the phase and amplitude information on the pump-probe signal using just a single-scan data, while conventional techniques require an independent signal measured without the pump field for the normalization of the pump-probe spectrum. As a proof-of-principle experiment, we here show that the DFC-IPS enables us to simultaneously measure the frequency-resolved (from 650 to 950 nm) transient absorption and refraction signals with an exceptionally broad dynamic range from femtosecond to nanosecond without using a mechanical translational stage for pump-probe time-scanning. We anticipate that our DFC-IPS technique with femtosecond time-resolution capability will be useful to investigate photoinduced chemical and biological reactions covering broad dynamic ranges.
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Affiliation(s)
- JunWoo Kim
- Center for Molecular Spectroscopy and Dynamics , Institute for Basic Science (IBS) , Seoul 02841 , Republic of Korea
| | - Tai Hyun Yoon
- Center for Molecular Spectroscopy and Dynamics , Institute for Basic Science (IBS) , Seoul 02841 , Republic of Korea.,Department of Physics , Korea University , Seoul 02841 , Republic of Korea
| | - Minhaeng Cho
- Center for Molecular Spectroscopy and Dynamics , Institute for Basic Science (IBS) , Seoul 02841 , Republic of Korea.,Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea
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22
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Son J, Joo T. Ultrafast time-resolved fluorescence at cryogenic temperature. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2018; 89:083115. [PMID: 30184696 DOI: 10.1063/1.5028367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 08/05/2018] [Indexed: 06/08/2023]
Abstract
Time resolved fluorescence at low temperature can be a powerful tool for the study of dynamics and spectroscopy. We have developed a time resolved fluorescence apparatus that provides a time resolution of 45 fs at cryogenic temperature, which is comparable to the best time resolution at ambient temperature. A continuous flow cryostat with a customized vacuum shroud and fluorescence upconversion gating by sum frequency generation were employed. A reflective Cassegrain type microscope objective lens was used to collect and to image the fluorescence to achieve high time resolution. It was demonstrated that time-resolved fluorescence spectra can also be measured directly without the spectra reconstruction at the same time resolution by in situ adjustment of the time delay to compensate the group velocity dispersion. Heat dissipation of the sample holder and the actual temperature of the irradiated volume were estimated by measuring the steady-state emission spectra of prodan solution in two different sample thicknesses, which provides a design consideration for the sample cell. The time-resolved fluorescence spectra of prodan, which undergoes charge transfer in the excited state, were measured at low temperature to demonstrate the capability of the apparatus.
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Affiliation(s)
- Jiwon Son
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Taiha Joo
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, South Korea
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23
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Bolzonello L, Polo A, Volpato A, Meneghin E, Cordaro M, Trapani M, Fortino M, Pedone A, Castriciano MA, Collini E. Two-Dimensional Electronic Spectroscopy Reveals Dynamics and Mechanisms of Solvent-Driven Inertial Relaxation in Polar BODIPY Dyes. J Phys Chem Lett 2018; 9:1079-1085. [PMID: 29446639 PMCID: PMC5836106 DOI: 10.1021/acs.jpclett.7b03393] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Accepted: 02/15/2018] [Indexed: 05/27/2023]
Abstract
In this work, we demonstrate the use of two-dimensional electronic spectroscopy (2DES) to study the mechanism and time scale of the femtosecond Stokes shift dynamics in molecules characterized by intramolecular charge transfer, such as distyryl-functionalized boron dipyrromethene (BODIPY) molecules. The obtained results demonstrate that 2DES allows clear and direct visualization of the phenomenon. The analysis of the 2D data in terms of 2D frequency-frequency decay associated maps provides indeed not only the time scale of the relaxation process but also the starting and the final point of the energy flow and the associated reorganization energy, identified by looking at the coordinates of a negative signature below the diagonal. The sensitivity of the 2DES technique to vibrational coherence dynamics also allowed the identification of a possible relaxation mechanism involving specific interaction between a vibrational mode of the dye and the solvent.
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Affiliation(s)
- Luca Bolzonello
- Dipartimento
di Scienze Chimiche, Università di
Padova, via Marzolo 1, 35131 Padova, Italy
| | - Annalisa Polo
- Dipartimento
di Scienze Chimiche, Università di
Padova, via Marzolo 1, 35131 Padova, Italy
| | - Andrea Volpato
- Dipartimento
di Scienze Chimiche, Università di
Padova, via Marzolo 1, 35131 Padova, Italy
| | - Elena Meneghin
- Dipartimento
di Scienze Chimiche, Università di
Padova, via Marzolo 1, 35131 Padova, Italy
| | - Massimiliano Cordaro
- Dipartimento
di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, V.le F. Stagno d’Alcontres 31, 98166 Messina, Italy
- CNR-
ITAE, Istituto di Tecnologie Avanzate per
l’Energia “Nicola Giordano”, Messina, Italy
| | - Mariachiara Trapani
- CNR-ISMN,
Istituto per lo Studio dei Materiali Nanostrutturati, c/o Dipartimento di Scienze Chimiche, Biologiche,
Farmaceutiche ad Ambientali, 98166, V.le F. Stagno D’Alcontres 31, Messina, Italy
| | - Mariagrazia Fortino
- Dipartimento
di Scienze Chimiche e Geologiche, Università
di Modena e Reggio Emilia, via G. Campi 103, 41125 Modena, Italy
| | - Alfonso Pedone
- Dipartimento
di Scienze Chimiche e Geologiche, Università
di Modena e Reggio Emilia, via G. Campi 103, 41125 Modena, Italy
| | - Maria Angela Castriciano
- CNR-ISMN,
Istituto per lo Studio dei Materiali Nanostrutturati, c/o Dipartimento di Scienze Chimiche, Biologiche,
Farmaceutiche ad Ambientali, 98166 V.le F. Stagno D’Alcontres 31, Messina, Italy
| | - Elisabetta Collini
- Dipartimento
di Scienze Chimiche, Università di
Padova, via Marzolo 1, 35131 Padova, Italy
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24
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Kim J, Kim DE, Joo T. Excited-State Dynamics of Thioflavin T: Planar Stable Intermediate Revealed by Nuclear Wave Packet Spectroscopies. J Phys Chem A 2018; 122:1283-1290. [DOI: 10.1021/acs.jpca.7b11951] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- JunWoo Kim
- Department
of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Dong Eon Kim
- Physics
Department, Center for Attosecond Science and Technology, and Max
Planck Center for Attosecond Science, POSTECH, Pohang 37673, South Korea
| | - Taiha Joo
- Department
of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
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25
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Lee G, Kim J, Kim SY, Kim DE, Joo T. Vibrational Spectrum of an Excited State and Huang-Rhys Factors by Coherent Wave Packets in Time-Resolved Fluorescence Spectroscopy. Chemphyschem 2017; 18:670-676. [DOI: 10.1002/cphc.201601295] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/05/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Gyeongjin Lee
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 South Korea
| | - Junwoo Kim
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 South Korea
| | - So Young Kim
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 South Korea
| | - Dong Eon Kim
- Physics Department, Center for Attosecond Science and Technology, and Max Planck Center for Attosecond Science; Pohang University of Science and Technology (POSTECH); Pohang 37673 South Korea
| | - Taiha Joo
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 South Korea
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26
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Kumpulainen T, Rosspeintner A, Vauthey E. Probe dependence on polar solvation dynamics from fs broadband fluorescence. Phys Chem Chem Phys 2017; 19:8815-8825. [DOI: 10.1039/c7cp00706j] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Solvation dynamics is remarkably independent of the probe as long as specific interactions remain similar.
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Affiliation(s)
- Tatu Kumpulainen
- Department of Physical Chemistry
- University of Geneva
- Geneva
- Switzerland
| | | | - Eric Vauthey
- Department of Physical Chemistry
- University of Geneva
- Geneva
- Switzerland
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27
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Heo W, Uddin N, Park JW, Rhee YM, Choi CH, Joo T. Coherent intermolecular proton transfer in the acid–base reaction of excited state pyranine. Phys Chem Chem Phys 2017; 19:18243-18251. [DOI: 10.1039/c7cp01944k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The acidic proton in pyranine is transferred coherently to acetate through the stretching motion of the whole molecule.
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Affiliation(s)
- Wooseok Heo
- Department of Chemistry
- Pohang University of Science and Technology (POSTECH)
- Pohang 37673
- South Korea
| | - Nizam Uddin
- Department of Chemistry
- Kyunpook National University
- Daegu 41566
- South Korea
| | - Jae Woo Park
- Department of Chemistry
- Pohang University of Science and Technology (POSTECH)
- Pohang 37673
- South Korea
| | - Young Min Rhee
- Department of Chemistry
- Pohang University of Science and Technology (POSTECH)
- Pohang 37673
- South Korea
| | - Cheol Ho Choi
- Department of Chemistry
- Kyunpook National University
- Daegu 41566
- South Korea
| | - Taiha Joo
- Department of Chemistry
- Pohang University of Science and Technology (POSTECH)
- Pohang 37673
- South Korea
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28
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Jumper CC, Arpin PC, Turner DB, McClure SD, Rather SR, Dean JC, Cina JA, Kovac PA, Mirkovic T, Scholes GD. Broad-Band Pump-Probe Spectroscopy Quantifies Ultrafast Solvation Dynamics of Proteins and Molecules. J Phys Chem Lett 2016; 7:4722-4731. [PMID: 27934206 DOI: 10.1021/acs.jpclett.6b02237] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
In this work, we demonstrate the use of broad-band pump-probe spectroscopy to measure femtosecond solvation dynamics. We report studies of a rhodamine dye in methanol and cryptophyte algae light-harvesting proteins in aqueous suspension. Broad-band impulsive excitation generates a vibrational wavepacket that oscillates on the excited-state potential energy surface, destructively interfering with itself at the minimum of the surface. This destructive interference gives rise to a node at a certain probe wavelength that varies with time. This reveals the Gibbs free-energy changes of the excited-state potential energy surface, which equates to the solvation time correlation function. This method captures the inertial solvent response of water (∼40 fs) and the bimodal inertial response of methanol (∼40 and ∼150 fs) and reveals how protein-buried chromophores are sensitive to the solvent dynamics inside and outside of the protein environment.
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Affiliation(s)
- Chanelle C Jumper
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Paul C Arpin
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
- Department of Physics, California State University, Chico , Chico, California 95929-0202, United States
| | - Daniel B Turner
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
- Department of Chemistry, New York University , 100 Washington Square East, New York, New York 10003, United States
| | - Scott D McClure
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Shahnawaz R. Rather
- Department of Chemistry, Princeton University , Washington Road, Princeton, New Jersey 08544, United States
| | - Jacob C Dean
- Department of Chemistry, Princeton University , Washington Road, Princeton, New Jersey 08544, United States
| | - Jeffrey A Cina
- Department of Chemistry and Biochemistry, and Oregon Center for Optical, Molecular, and Quantum Science, University of Oregon , Eugene, Oregon 97403, United States
| | - Philip A Kovac
- Department of Chemistry and Biochemistry, and Oregon Center for Optical, Molecular, and Quantum Science, University of Oregon , Eugene, Oregon 97403, United States
| | - Tihana Mirkovic
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Gregory D Scholes
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
- Department of Chemistry, Princeton University , Washington Road, Princeton, New Jersey 08544, United States
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29
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Park JW, Rhee YM. Diabatic Population Matrix Formalism for Performing Molecular Mechanics Style Simulations with Multiple Electronic States. J Chem Theory Comput 2015; 10:5238-53. [PMID: 26583208 DOI: 10.1021/ct5006856] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An accurate description of nonbonded interactions is important in investigating dynamics of molecular systems. In many situations, fixed point charge models are successfully applied to explaining various chemical phenomena. However, these models with conventional formulations will not be appropriate in elucidating the detailed dynamics during nonadiabatic events. This is mainly because the chemical properties of any molecule, especially its electronic populations, significantly change with respect to molecular distortions in the vicinity of the surface crossing. To overcome this issue in molecular simulations yet within the framework of the fixed point charge model, we define a diabatic electronic population matrix and substitute it for the conventional adiabatic partial charges. We show that this matrix can be readily utilized toward attaining more reliable descriptions of Coulombic interactions, in combination with the interpolation formalism for obtaining the intramolecular interaction potential. We demonstrate how the mixed formalism with the diabatic charges and the interpolation can be applied to molecular simulations by conducting adiabatic and nonadiabatic molecular dynamics trajectory calculations of the green fluorescent protein chromophore anion in aqueous environment.
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Affiliation(s)
- Jae Woo Park
- Center for Self-Assembly and Complexity, Institute for Basic Science (IBS) , Pohang 790-784, Korea.,Department of Chemistry, Pohang University of Science and Technology (POSTECH) , Pohang 790-784, Korea
| | - Young Min Rhee
- Center for Self-Assembly and Complexity, Institute for Basic Science (IBS) , Pohang 790-784, Korea.,Department of Chemistry, Pohang University of Science and Technology (POSTECH) , Pohang 790-784, Korea
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30
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Mao P, Wang Z, Dang W, Weng Y. Multi-channel lock-in amplifier assisted femtosecond time-resolved fluorescence non-collinear optical parametric amplification spectroscopy with efficient rejection of superfluorescence background. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2015; 86:123113. [PMID: 26724012 DOI: 10.1063/1.4938187] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Superfluorescence appears as an intense background in femtosecond time-resolved fluorescence noncollinear optical parametric amplification spectroscopy, which severely interferes the reliable acquisition of the time-resolved fluorescence spectra especially for an optically dilute sample. Superfluorescence originates from the optical amplification of the vacuum quantum noise, which would be inevitably concomitant with the amplified fluorescence photons during the optical parametric amplification process. Here, we report the development of a femtosecond time-resolved fluorescence non-collinear optical parametric amplification spectrometer assisted with a 32-channel lock-in amplifier for efficient rejection of the superfluorescence background. With this spectrometer, the superfluorescence background signal can be significantly reduced to 1/300-1/100 when the seeding fluorescence is modulated. An integrated 32-bundle optical fiber is used as a linear array light receiver connected to 32 photodiodes in one-to-one mode, and the photodiodes are further coupled to a home-built 32-channel synchronous digital lock-in amplifier. As an implementation, time-resolved fluorescence spectra for rhodamine 6G dye in ethanol solution at an optically dilute concentration of 10(-5)M excited at 510 nm with an excitation intensity of 70 nJ/pulse have been successfully recorded, and the detection limit at a pump intensity of 60 μJ/pulse was determined as about 13 photons/pulse. Concentration dependent redshift starting at 30 ps after the excitation in time-resolved fluorescence spectra of this dye has also been observed, which can be attributed to the formation of the excimer at a higher concentration, while the blueshift in the earlier time within 10 ps is attributed to the solvation process.
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Affiliation(s)
- Pengcheng Mao
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhuan Wang
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Wei Dang
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Yuxiang Weng
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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31
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Kim CW, Park JW, Rhee YM. Effect of Chromophore Potential Model on the Description of Exciton-Phonon Interactions. J Phys Chem Lett 2015; 6:2875-2880. [PMID: 26267173 DOI: 10.1021/acs.jpclett.5b01141] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
System-bath interactions in nonadiabatic simulations are often depicted by first performing molecular dynamics calculations and then by evaluating excitation energies at the trajectory snapshots. Usually, molecular mechanics models and quantum chemical calculations are used in a mixed manner toward a trade-off between efficiency and accuracy. Here we investigate how this mixing scheme affects that depiction by using various potential energy surfaces (PESs) of coumarin-153 chromophore, with the help of interpolated PESs that can closely match the accuracies of quantum chemical calculations. We find that although spectral densities are computed only with second stage data the PES characteristics during the first sampling stage can still prevail in the densities, with limited influences on related reorganization energies. Our results suggest that using the mixed scheme can be acceptable when dynamics is mainly governed by the integrated effect of all phonon modes, but care must be taken for understanding detailed effects from individual modes.
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Affiliation(s)
- Chang Woo Kim
- Center for Self-Assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea
| | - Jae Woo Park
- Center for Self-Assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea
| | - Young Min Rhee
- Center for Self-Assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea
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32
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Sun X, Ladanyi BM, Stratt RM. Effects of Electronic-State-Dependent Solute Polarizability: Application to Solute-Pump/Solvent-Probe Spectra. J Phys Chem B 2014; 119:9129-39. [DOI: 10.1021/jp509021c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xiang Sun
- Department
of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Branka M. Ladanyi
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Richard M. Stratt
- Department
of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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33
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Marciniak H, Lochbrunner S. On the interpretation of decay associated spectra in the presence of time dependent spectral shifts. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.05.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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34
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Park M, Im D, Rhee YH, Joo T. Coherent and Homogeneous Intramolecular Charge-Transfer Dynamics of 1-tert-Butyl-6-cyano-1,2,3,4-tetrahydroquinoline (NTC6), a Rigid Analogue of DMABN. J Phys Chem A 2014; 118:5125-34. [DOI: 10.1021/jp411227r] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Myeongkee Park
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea
| | - Donghong Im
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea
| | - Young Ho Rhee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea
| | - Taiha Joo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea
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35
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Lee J, Joo T. Photophysical Model of 10-Hydroxybenzo[h]quinoline: Internal Conversion and Excited State Intramolecular Proton Transfer. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.3.881] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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36
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Lee SN, Park J, Lim M, Joo T. Identification of an emitting molecular species by time-resolved fluorescence applied to the excited state dynamics of pigment yellow 101. Phys Chem Chem Phys 2014; 16:9394-402. [DOI: 10.1039/c3cp54546f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Time-resolved fluorescence (TRF) with a resolution higher than the periods of vibrations may provide the vibrational spectrum of an emitting species by directly recording the vibrational wave packet motions in time.
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Affiliation(s)
- Seung Noh Lee
- Department of Chemistry
- Pohang University of Science and Technology (POSTECH)
- Pohang, South Korea
| | - Jaeheung Park
- Department of Chemistry and Chemistry Institute for Functional Materials
- Busan National University
- Busan, South Korea
| | - Manho Lim
- Department of Chemistry and Chemistry Institute for Functional Materials
- Busan National University
- Busan, South Korea
| | - Taiha Joo
- Department of Chemistry
- Pohang University of Science and Technology (POSTECH)
- Pohang, South Korea
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37
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Chiu CC, Hung CC, Chen CL, Cheng PY. Ultrafast Time-Resolved Broadband Fluorescence Studies of the Benzene-Tetracyanoethylene Complex: Solvation, Vibrational Relaxation, and Charge Recombination Dynamics. J Phys Chem B 2013; 117:9734-56. [DOI: 10.1021/jp404615u] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Chih-Chung Chiu
- Department
of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
| | - Chih-Chang Hung
- Department
of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
| | - Chien-Lin Chen
- Department
of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
| | - Po-Yuan Cheng
- Department
of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
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38
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Messina F, Bräm O, Cannizzo A, Chergui M. Real-time observation of the charge transfer to solvent dynamics. Nat Commun 2013; 4:2119. [DOI: 10.1038/ncomms3119] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2012] [Accepted: 06/06/2013] [Indexed: 11/09/2022] Open
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39
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Sailer CF, Thallmair S, Fingerhut BP, Nolte C, Ammer J, Mayr H, Pugliesi I, de Vivie-Riedle R, Riedle E. A Comprehensive Microscopic Picture of the Benzhydryl Radical and Cation Photogeneration and Interconversion through Electron Transfer. Chemphyschem 2013; 14:1423-37. [DOI: 10.1002/cphc.201201057] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Indexed: 11/09/2022]
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40
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Messina F, El-Zohry AM, Mohammed OF, Chergui M. The Role of Site-Specific Hydrogen Bonding Interactions in the Solvation Dynamics of N-Acetyltryptophanamide. J Phys Chem B 2012; 116:10730-8. [DOI: 10.1021/jp305363y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Fabrizio Messina
- Ecole Polytechnique Fédérale de Lausanne, Laboratoire de Spectroscopie Ultrarapide
(LSU), ISIC, Faculté des Sciences de Base, station 6, CH-1015
Lausanne-Dorigny, Switzerland
| | - Ahmed M. El-Zohry
- Ecole Polytechnique Fédérale de Lausanne, Laboratoire de Spectroscopie Ultrarapide
(LSU), ISIC, Faculté des Sciences de Base, station 6, CH-1015
Lausanne-Dorigny, Switzerland
- Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Omar F. Mohammed
- Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Majed Chergui
- Ecole Polytechnique Fédérale de Lausanne, Laboratoire de Spectroscopie Ultrarapide
(LSU), ISIC, Faculté des Sciences de Base, station 6, CH-1015
Lausanne-Dorigny, Switzerland
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41
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Park JW, Kim HW, Song CI, Rhee YM. Condensed phase molecular dynamics using interpolated potential energy surfaces with application to the resolvation process of coumarin 153. J Chem Phys 2011; 135:014107. [PMID: 21744888 DOI: 10.1063/1.3605302] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Interpolated potential energy surfaces (PESs) have been used for performing reliable molecular dynamics (MD) simulations of small molecular reactions. In this article, we extend this method to MD simulations in condensed phase and show that the same scheme can also be feasibly used when it is supplemented with additional terms for describing intermolecular interactions. We then apply the approach for studying the resolvation process of coumarin 153 in a number of polar solvents. We find that the interpolated surface actually reproduces experimentally found features much better than the conventional force field based potential especially in terms of both dynamics Stokes shift in the short time limit and solute vibrational decoherence. This shows that the solute vibrational effect is important to some degree along the resolvation and should be modeled properly for accurate description of the related dynamics. The stability issue of trajectories on the interpolated PESs is also discussed, in regard to the goal of reliably performing long time simulations. Operational limitations of the present scheme are also discussed.
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Affiliation(s)
- Jae Woo Park
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea
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42
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Kim SY, Yoon E, Joo T, Park MJ. Morphology and Conductivity in Ionic Liquid Incorporated Sulfonated Block Copolymers. Macromolecules 2011. [DOI: 10.1021/ma200278c] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Sung Yeon Kim
- Division of Advanced Materials Science (WCU) and ‡Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Korea 790-784
| | - Eunjin Yoon
- Division of Advanced Materials Science (WCU) and ‡Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Korea 790-784
| | - Taiha Joo
- Division of Advanced Materials Science (WCU) and ‡Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Korea 790-784
| | - Moon Jeong Park
- Division of Advanced Materials Science (WCU) and ‡Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Korea 790-784
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43
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Zhang XX, Würth C, Zhao L, Resch-Genger U, Ernsting NP, Sajadi M. Femtosecond broadband fluorescence upconversion spectroscopy: improved setup and photometric correction. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2011; 82:063108. [PMID: 21721675 DOI: 10.1063/1.3597674] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A setup for fluorescence upconversion spectroscopy (FLUPS) is described which has 80 fs temporal response (fwhm) for emission in the spectral range 425-750 nm. Broadband phase matching is achieved with tilted gate pulses at 1340 nm. Background from harmonics of the gate pulse is removed and sensitivity increased compared to previous designs. Photometric calibration of the upconversion process is performed with a set of fluorescent dyes. For Coumarin 153 in methanol the peak position, bandwidth, and asymmetry depending on delay time are reported.
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Affiliation(s)
- X-X Zhang
- Photonics Center, College of Physical Science, Nankai University, Tianjin, China
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44
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Park S, Park JS, Joo T. Solvation Dynamics by Coherence Period Resolved Transient Grating. J Phys Chem A 2011; 115:3973-9. [DOI: 10.1021/jp108495t] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sohyun Park
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Korea
| | - June-Sik Park
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Korea
| | - Taiha Joo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Korea
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45
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Dobek K. The influence of temperature on Coumarin 153 fluorescence kinetics. J Fluoresc 2011; 21:1547-57. [PMID: 21246263 PMCID: PMC3144373 DOI: 10.1007/s10895-011-0843-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Accepted: 01/10/2011] [Indexed: 11/26/2022]
Abstract
The influence of temperature varied in the range 183 K–323 K on the fluorescence quantum yield, fluorescence lifetime, absorption and emission transition moments and non-radiative deactivation rate was determined for the well known and largely used dye Coumarin 153, dissolved in 1-chloropropane. The Kennard-Stepanov relation connecting the absorption and emission spectra was used to check for the presence of more than one absorbing/emitting species and to investigate whether intramolecular vibrational redistribution completes in the C153 excited S1 state before the emission takes place. The emission spectrum corresponding to S1→S0 transition, was fitted at each temperature to the model function including the information on the dye vibrational modes coupling. In this way the displacement in equilibrium distance for the most active vibrational mode was determined for C153 in S1 and in S0. Using the temperature dependence of the fluorescence decay time and quantum yield, the non-radiative deactivation rate was determined. Its temperature dependence was compared to that calculated using the theoretical model with the most active vibrational mode displacement values taken from steady-state spectra analysis. The somewhat surprising dependence of the fluorescence decay time and quantum yield on temperature was related to non-trivial coupling between low-frequency vibrational modes of C153 in the excited and ground states.
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Affiliation(s)
- Krzysztof Dobek
- Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland.
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