Heteroatom and Side Chain Effects on the Optical and Photophysical Properties: Ultrafast and Nonlinear Spectroscopy of New Naphtho[1,2-<i>b</i>:5,6-<i>b</i>′]difuran Donor Polymers

Madu, Ifeanyi K.; Muller, Evan; Shaw, Jessica; Burney‐Allen, Alfred A.; Zimmerman, Paul M.; Jeffries‐EL, Malika

doi:10.1021/acs.jpcc.8b03914

Cited by 20 publications

(23 citation statements)

References 70 publications

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“…Previous studies have observed the relationship between molecular planarity and two-photon absorption. 34,39,40 Here, the two-photon absorption cross section (d TPA ) is enhanced by over one order of magnitude for the planar bC (ca. 300 GM) relative to the twisted b compound (ca.…”

Section: Steady-state and Two-photon Absorption Measurementsmentioning

confidence: 96%

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Activating intramolecular singlet exciton fission by altering π-bridge flexibility in perylene diimide trimers for organic solar cells

et al. 2020

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Section: Steady-state and Two-photon Absorption Measurementsmentioning

confidence: 96%

“…The extremely broad emission spectrum and the large Stokes shi suggest a drastic rearrangement of this exible molecule in the excited state. 33,34 Fig. 1 Normalized absorption and emission spectra of the trimers in chloroform.…”

Section: Steady-state and Two-photon Absorption Measurementsmentioning

confidence: 99%

Activating intramolecular singlet exciton fission by altering π-bridge flexibility in perylene diimide trimers for organic solar cells

et al. 2020

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“…The two-photon excited fluorescence technique 59,60 was used for the classical two-photon experiments. Our experimental setup has been described elsewhere 49,61 . In brief, the pure liquid (or a liquid solution of the compound of interest) contained in a 1 cm path length quartz cuvette is excited with the output beam of a Ti:Sapphire femtosecond pulsed laser (KMLabs, 800 nm, Δt ~30 fs) with a 80 MHz repetition rate.…”

Section: Methodsmentioning

confidence: 99%

Modern Anesthetic Ethers Demonstrate Quantum Interactions with Entangled Photons

Burdick

Villabona-Monsalve

Mashour

2019

Sci Rep

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Despite decades of research, the mechanism of anesthetic-induced unconsciousness remains incompletely understood, with some advocating for a quantum mechanical basis. Despite associations between general anesthesia and changes in physical properties such as electron spin, there has been no empirical demonstration that general anesthetics are capable of functional quantum interactions. In this work, we studied the linear and non-linear optical properties of the halogenated ethers sevoflurane (SEVO) and isoflurane (ISO), using UV-Vis spectroscopy, time dependent-density functional theory (TD-DFT) calculations, classical two-photon spectroscopy, and entangled two-photon spectroscopy. We show that both of these halogenated ethers interact with pairs of 800 nm entangled photons while neither interact with 800 nm classical photons. By contrast, nonhalogenated diethyl ether does not interact with entangled photons. This is the first experimental evidence that halogenated anesthetics can directly undergo quantum interaction mechanisms, offering a new approach to understanding their physicochemical properties.

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“…synthesized a series of NDF‐based polymers PNDF9 – PNDF12 containing the identical conjugated framework and different π‐bridge. [ 292 ] PNDF9 and PNDF10 with the furan moiety in the backbone, displayed a broader absorption region and higher extinction coefficient those of PNDF11 and PNDF12 , which was favorable tendency of capturing more solar photons when used in a photovoltaic device. Besides, the polymers with the furan as π‐linker showed a higher two‐photon absorption cross sections relative to that of its thiophene counterparts owing to the planarity in the molecular backbone, suggesting the furan‐based compounds would possess higher charge transfer (CT) tendencies compared to the thiophene analogues.…”

Section: Naphthodifurans‐based Materials Used In Oscsmentioning

confidence: 99%

Recent Advances of Furan and Its Derivatives Based Semiconductor Materials for Organic Photovoltaics

Zheng

Huo

2021

Small Methods

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The state‐of‐the‐art bulk‐heterojunction (BHJ)‐type organic solar cells (OSCs) have exhibited power conversion efficiencies (PCEs) of exceeding 18%. Thereinto, thiophene and its fused‐ring derivatives play significant roles in facilitating the development of OSCs due to their excellent semiconducting natures. Furan as thiophene analogue, is a ubiquitous motif in naturally occurring organic compounds. Driven by the advantages of furan, such as less steric hindrance, good solubility, excellent stacking, strong rigidity and fluorescence, biomass derived fractions, more and more research groups focus on the furan‐based materials for using in OSCs in the past decade. To systematically understand the developments of furan‐based photovoltaic materials, the relationships between the molecular structures, optoelectronic properties, and photovoltaic performances for the furan‐based semiconductor materials including single furan, benzofuran, benzodifuran (BDF) (containing thienobenzofuran (TBF)), naphthodifurans (NDF), and polycyclic furan are summarized. Finally, the empirical regularities and perspectives of the development of this kind of new organic semiconductor materials are extracted.

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Heteroatom and Side Chain Effects on the Optical and Photophysical Properties: Ultrafast and Nonlinear Spectroscopy of New Naphtho[1,2-b:5,6-b′]difuran Donor Polymers

Abstract: OpenBU http://open.bu.edu Chemistry BU Open Access Articles 2018-08-02 Heteroatom and side chain effects on the optical and photophysical properties: ultrafast and nonlin...

Cited by 20 publications

References 70 publications

Activating intramolecular singlet exciton fission by altering π-bridge flexibility in perylene diimide trimers for organic solar cells

Activating intramolecular singlet exciton fission by altering π-bridge flexibility in perylene diimide trimers for organic solar cells

Modern Anesthetic Ethers Demonstrate Quantum Interactions with Entangled Photons

Recent Advances of Furan and Its Derivatives Based Semiconductor Materials for Organic Photovoltaics

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