Surfaces and Interfaces for Renewable Energy

Manzano‐Agugliaro, Francisco; Fernández-García, Aranzazú

doi:10.3390/coatings9120838

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…In principle, 2D-EVSFG is a fourth-order nonlinear process where the interactions of the four pulses with matter generate a fourth-order nonlinear signal. The signal originates from fourth-order polarization, which is given by the convolution of the fourth-order response function, R (4) (t 4 ′,t 3 ′,t 2 ′,t 1 ′), with the four electric fields as derived in the Supporting Information. 55 Since the electronic responses of molecules interacting with a nonresonant visible light are instantaneous, the fourth-order response function is further expressed as, 56,57 (1)…”

Section: ■ Introductionmentioning

confidence: 99%

Development of Two-Dimensional Electronic-Vibrational Sum Frequency Generation (2D-EVSFG) for Vibronic and Solvent Couplings of Molecules at Interfaces and Surfaces

et al. 2023

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Many photoinduced excited states’ relaxation processes and chemical reactions occur at interfaces and surfaces, including charge transfer, energy transfer, proton transfer, proton-coupled electron transfer, configurational dynamics, conical intersections, etc. Of them, interactions of electronic and vibrational motions, namely, vibronic couplings, are the main determining factors for the relaxation processes or reaction pathways. However, time-resolved electronic-vibrational spectroscopy for interfaces and surfaces is lacking. Here we develop interface/surface-specific two-dimensional electronic-vibrational sum frequency generation spectroscopy (2D-EVSFG) for time-dependent vibronic coupling of excited states at interfaces and surfaces. We further demonstrate the fourth-order technique by investigating vibronic coupling, solvent correlation, and time evolution of the coupling for photoexcited interface-active molecules, crystal violet (CV), at the air/water interface as an example. The two vibronic absorption peaks for CV molecules at the interface from the 2D-EVSFG experiments were found to be more prominent than their counterparts in bulk from 2D-EV. Quantitative analysis of the vibronic peaks in 2D-EVSFG suggested that a non-Condon process participates in the photoexcitation of CV at the interface. We further reveal vibrational solvent coupling for the zeroth level on the electronic state with respect to that on the ground state, which is directly related to the magnitude of its change in solvent reorganization energy. The change in the solvent reorganization energy at the interface is much smaller than that in bulk methanol. Time-dependent center line slopes (CLSs) of 2D-EVSFG also showed that kinetic behaviors of CV at the air/water interface are significantly different from those in bulk methanol. Our ultrafast 2D-EVSFG experiments not only offer vibrational information on both excited states and the ground state as compared with the traditional doubly resonant sum frequency generation and electronic-vibrational coupling but also provide vibronic coupling, dynamical solvent effects, and time evolution of vibronic coupling at interfaces.

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Section: ■ Introductionmentioning

confidence: 99%

Development of Two-Dimensional Electronic-Vibrational Sum Frequency Generation (2D-EVSFG) for Vibronic and Solvent Couplings of Molecules at Interfaces and Surfaces

et al. 2023

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The energy industry in Russia: assessment of the state, problems and prospects

Sheveleva

Slesarenko

Mamzina

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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An assessment of the state and the problems of the development of the energy sector of Russian industry, which plays an important role in ensuring both the country’s energy and national security, are presented in the article. In the course of the analysis, a number of positive aspects were identified that characterize the increase in the efficiency of the research industry, namely, there has been an increase in labor productivity, overall savings in energy resources used for own needs have been noted, and environmental profiles of enterprises have improved. However, along with this, a number of negative trends are revealed, the most significant of which authors consider to be: the growth of unprofitable enterprises, the decrease in solvency and current financial stability due to the significant exposure of the industry to opportunistic and seasonal fluctuations, as well as the persistent negative impact of the industry on the environment. An important feature of the energy sector of Russian economy is the lack of positive dynamics in increasing renewable energy sources in the total volume of its production, which does not allow talking about a significant increase in environmental security in this industry. The authors associate the perspective directions of the Russian energy sector development with the need to increase the share of renewable energy sources, and the development of the industry using traditional sources should be based on the interconnection of three important components: economic feasibility, resource endowment, and environmental acceptance.

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Surfaces and Interfaces for Renewable Energy

Cited by 2 publications

References 6 publications

Development of Two-Dimensional Electronic-Vibrational Sum Frequency Generation (2D-EVSFG) for Vibronic and Solvent Couplings of Molecules at Interfaces and Surfaces

Development of Two-Dimensional Electronic-Vibrational Sum Frequency Generation (2D-EVSFG) for Vibronic and Solvent Couplings of Molecules at Interfaces and Surfaces

The energy industry in Russia: assessment of the state, problems and prospects

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