Time-Resolved Study on Vibrational Energy Relaxation of Aromatic Molecules and Their Clusters in the Gas Phase

Ebata, Takayuki

doi:10.1007/978-981-13-9371-6_9

Cited by 3 publications

(3 citation statements)

References 56 publications

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“…In recent years, gas-phase laser photodissociation spectroscopy has been actively performed to study the structures of cold supramolecular ions. 6 In particular, the vibrational temperature of an isolated ion is lowered to ∼10 K by employing a cryogenic ion trap. This cryogenic technique allows us to observe vibrationally resolved sharp absorption spectra of supramolecules.…”

Section: Introductionmentioning

confidence: 99%

Intra-host π–π interactions in crown ether complexes revealed by cryogenic ion mobility-mass spectrometry

Ito,

Ohshimo,

Misaizu

2024

Phys. Chem. Chem. Phys.

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Section: Introductionmentioning

confidence: 99%

Intra-host π–π interactions in crown ether complexes revealed by cryogenic ion mobility-mass spectrometry

Ito,

Ohshimo,

Misaizu

2024

Phys. Chem. Chem. Phys.

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“…Noncovalent interactions such as hydrogen bonds (H-bonds) play an important role in determining the structures and the associated functions of several molecular systems, including DNA base pairs and the folding of proteins . To investigate intermolecular interactions microscopically, numerous studies on H-bonded clusters with protic solvents, especially water, using the supersonic jet method have been widely reported. − These investigations have revealed that such interactions affect not only microscopic solvation structures in the electronically ground state but also in the excited state, leading to electronic transition shifts and relaxation dynamics changes. For instance, Lim’s group reported two isomers of 1-cyanonaphthalene–(H 2 O) 1,2 with different fluorescence lifetimes, where the water molecule acts as an H-bond donor to the cyano group in different orientations .…”

Section: Introductionmentioning

confidence: 99%

Isomer Stability Dependence of Hydrogen-Bonded Benzoxazole Clusters on Solvent Molecules

et al. 2023

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The structures of hydrogen-bonded benzoxazole clusters with methanol and ammonia, BO−(CH 3 OH) n (n = 1−3) and BO−(NH 3 ) n (n = 1, 2), in a supersonic jet have been investigated by measuring the S 1 −S 0 electronic spectra and isomer-selected vibrational spectra with the aid of quantum chemical calculations. Similar to BO−(H 2 O) 1 , two isomers of BO−(NH 3 ) 1 were observed, which form two types of hydrogen bond networks starting from the CH bond at the 2-/7-position to the nitrogen atom of BO (C2HN/C7HN). The relative stability of these isomers strongly depends on solvent molecules. Natural bond orbital analysis reveals that the OH•••N hydrogen bond is dominant in BO−(H 2 O) 1 and that intermolecular interaction between the CH group and the nitrogen atom of ammonia, especially C2H•••N, is significantly enhanced, resulting in a more stable C2HN isomer. Symmetry-adapted perturbation theory calculations indicate that the dispersion interaction between the methyl group of methanol and π electron cloud on the BO ring is responsible for the extreme stability of the C7HN of BO−(CH 3 OH) 1 . Furthermore, using time-dependent density functional theory calculations, the isomer tendency of the electronic transition shifts from the monomer origin is reproduced and it is proposed that the significant blue shift in C2HN is due to the shortened C2H bond length upon electronic excitation.

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“…Isolated clusters generated in a supersonic jet expansion provide information about solvation structures and intermolecular potentials of weakly bound systems without perturbation from the environment. For this purpose, solvation structures have been determined for a great variety of solute–solvent combinations by applying various spectroscopic techniques and quantum chemical calculations to size-selected clusters. − …”

Section: Introductionmentioning

confidence: 99%

Isomer-Selective Spectroscopy and Dynamics of Phenol–Ar_n (n ≤ 5) Clusters

et al. 2021

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Structures and ionization-induced solvation dynamics of phenol–(argon) n clusters, PhOH–Ar n (n ≤ 5), were studied by using a variety of isomer-selective photoionization and vibrational spectroscopic techniques. Several higher-energy isomers were found and assigned for the first time by systematically controlling the experimental conditions of the supersonic expansion. This behavior is also confirmed for the PhOH–Kr2 cluster. Solvation structures are elucidated by evaluating systematic shifts in the S1 ← S0 origin and ionization energies obtained by resonance-enhanced photoionization, in addition to the OH stretching frequency obtained by IR photodissociation. Isomer-selective picosecond time-resolved IR spectroscopy for the n = 2 clusters revealed that the dynamics for the ionization-induced intermolecular π → H site-switching reaction strongly depends on the initial isomeric structure. In particular, the reaction time for the (1|1) isomer is 7 ps, while that for (2|0) is <3 ps. This difference shows that the switching time is determined by the distance of the reaction coordinate between the initial π-site and the final OH-site.

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Time-Resolved Study on Vibrational Energy Relaxation of Aromatic Molecules and Their Clusters in the Gas Phase

Cited by 3 publications

References 56 publications

Intra-host π–π interactions in crown ether complexes revealed by cryogenic ion mobility-mass spectrometry

Intra-host π–π interactions in crown ether complexes revealed by cryogenic ion mobility-mass spectrometry

Isomer Stability Dependence of Hydrogen-Bonded Benzoxazole Clusters on Solvent Molecules

Isomer-Selective Spectroscopy and Dynamics of Phenol–Ar_n (n ≤ 5) Clusters

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Time-Resolved Study on Vibrational Energy Relaxation of Aromatic Molecules and Their Clusters in the Gas Phase

Cited by 3 publications

References 56 publications

Intra-host π–π interactions in crown ether complexes revealed by cryogenic ion mobility-mass spectrometry

Intra-host π–π interactions in crown ether complexes revealed by cryogenic ion mobility-mass spectrometry

Isomer Stability Dependence of Hydrogen-Bonded Benzoxazole Clusters on Solvent Molecules

Isomer-Selective Spectroscopy and Dynamics of Phenol–Arn (n ≤ 5) Clusters

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Isomer-Selective Spectroscopy and Dynamics of Phenol–Ar_n (n ≤ 5) Clusters