What does this research mean for the field?

Fullerene (C60) acts as the superior terminal electron acceptor in multi-modular push-pull systems even in the presence of other strong electron acceptors, and the terminal electron donor dictates the lifetime of the resulting charge-separated state. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate intramolecular charge transfer dynamics and determine whether fullerene maintains terminal electron acceptor behavior in multi-modular conjugates containing competing electron-accepting units.

August 30, 2026Chemistry - A European Journal

Donor‐Controlled Intramolecular Charge Transfer in Multi‐Modular Push‐Pull Conjugates Containing Competing Electron Acceptors

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To evaluate intramolecular charge transfer dynamics and determine whether fullerene maintains terminal electron acceptor behavior in multi-modular conjugates containing competing electron-accepting units.
Synthesized multi-modular push-pull conjugates coupling a phenothiazine donor, intermediate electron acceptors (tetracyanobutadiene or dicyanoquinodimethane), and a terminal fullerene (C60) unit.
Performed electrochemical measurements alongside density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations to characterize molecular electronic structures and redox processes.
Used femtosecond pump-probe transient absorption spectroscopy to identify excited-state charge transfer pathways and measure charge-separated state lifetimes.
Intramolecular charge transfer between closely spaced donor and acceptor entities broadened optical absorption into the near-infrared region and produced up to ten reversible redox processes.
Femtosecond spectroscopy demonstrated that C60 functions as the dominant terminal electron acceptor despite the presence of competing strong acceptors.
Structural variations in the terminal electron donor systematically tuned the overall lifetime of the final charge-separated state.

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Implication

Spectroscopic analysis demonstrates fullerene-directed charge transfer in multi-modular push-pull conjugates, suggesting new design strategies for solar energy-harvesting materials.

Cite This Study

Ileperuma et al. (2026) studied this question.

synapsesocial.com/papers/6a93f1396c1a8fb52e79df72 https://doi.org/10.1002/chem.71635

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Implication

Spectroscopic analysis demonstrates fullerene-directed charge transfer in multi-modular push-pull conjugates, suggesting new design strategies for solar energy-harvesting materials.

Donor‐Controlled Intramolecular Charge Transfer in Multi‐Modular Push‐Pull Conjugates Containing Competing Electron Acceptors

Key Points

Discussion

Implication

Cite This Study

Donor‐Controlled Intramolecular Charge Transfer in Multi‐Modular Push‐Pull Conjugates Containing Competing Electron Acceptors

Key Points

Discussion

Implication

Cite This Study

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