Characterization by time-resolved UV-Vis and infrared absorption spectroscopy of an intramolecular charge-transfer state in an organic electron-donor–bridge–acceptor system

Hviid, Lene; Verhoeven, J. W.; Brouwer, Albert M.; Paddon‐Row, Michael N.; Yang, Jixin

doi:10.1039/b313226a

Cited by 18 publications

(19 citation statements)

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“…This yields a 1 CT state which decays with a time constant that varies from a few nanoseconds in nonpolar media to less than 10 ps in polar solvents without a trace of 3 CT formation. [33] Addition of a suitable triplet sensitizer in the form of benzophenone (BP), which can be excited at longer wavelength than dimethoxynaphthalene, leads to a situation where in polar solvents CT. [34][35][36] The corresponding energy diagram is depicted in Figure 4. ).…”

Section: Population Of Triplet Ct States By Inter-and Intramolecular mentioning

confidence: 98%

Long‐Lived Charge‐Transfer States in Compact Donor–Acceptor Dyads

et al. 2005

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Photoinduced electron transfer is a widely applied method to convert photon energy into a useful (electro)chemical potential, both in nature and in artificial devices. There is a continuing effort to develop molecular systems in which the charge-transfer state, populated by photoinduced electron transfer, survives sufficiently long to tap the energy stored in it. In general this has been found to require the construction of rather complex molecular systems, but more recently a few approaches have been reported that allow the use of much more simple and relatively small electron donor-acceptor dyads for this purpose. The most successful examples of such systems seem to be those that apply "electron spin control" to slow down the spontaneous decay of the charge-transfer state, and these are reviewed in this minireview, with a discussion of the underlying principles and a critical evaluation of some of the claims made with regard to using a pronounced "inverted-region effect" as an alternative method to prolong the lifetime of charge-transfer states.

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Section: Population Of Triplet Ct States By Inter-and Intramolecular mentioning

confidence: 98%

Long‐Lived Charge‐Transfer States in Compact Donor–Acceptor Dyads

et al. 2005

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“…The molecular bridge which links the donor to the acceptor is considered to play a vital role in the light of several key aspects. [14][15][16] First, covalent linkers eliminate diffusion as the rate determining step of the charge transfer process. This helps to accelerate the electron transfer dynamics.…”

Section: -Wire-donor Systemsmentioning

confidence: 99%

Fullerene for organic electronics

et al. 2009

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This tutorial review surveys and highlights the integration of different molecular wires-in combination with chromophores that exhibit (i) significant absorption cross section throughout the visible part of the solar spectrum and (ii) good electron donating power-into novel electron donor-acceptor conjugates. The focus is predominantly on charge transfer and charge transport features of the most promising systems.

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“…A convenient model system often used to probe intramolecular ET reactions by different experimental techniques comprises of a donor (D) and an acceptor (A) of electrons connected by molecular bridge (B) (for details see e.g. Jordan and Paddon-Row, 1992;Wasielewski, 1992;Miller et al, 1984a, b;Pullen et al, 1999;Warman et al, 1999;Wegewijs and Verhoeven, 1999;Sikes et al, 2001;Walters et al, 2003;Hviid et al, 2004;Weiss et al, 2004). The number and variety of such donor-bridge-acceptor (DBA) systems have grown explosively in recent years.…”

Section: Introductionmentioning

confidence: 99%