What question did this study set out to answer?

Synthesize a hollow, three-dimensionally π-conjugated molecular nanotube and characterize its structural dimensions and excited-state electronic dynamics.

May 7, 2015Angewandte ChemieOpen Access

A Molecular Nanotube with Three‐Dimensional π‐Conjugation

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Authors

PNPatrik NeuhausUniversity of Oxford ACArjen CnossenFlevoziekenhuis JGJuliane Q. GongUniversity of Oxford

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Implication

Chemical synthesis reveals three-dimensional electronic delocalization in a twelve-porphyrin molecular nanotube, indicating rapid intramolecular energy transfer across orthogonal axes.

Key Points

Synthesize a hollow, three-dimensionally π-conjugated molecular nanotube and characterize its structural dimensions and excited-state electronic dynamics.
Assembled a twelve-porphyrin nanotube via a template-directed coupling reaction joining six porphyrin dimers through twelve newly formed carbon–carbon bonds.
Characterized electronic structure and energy migration using steady-state UV/Vis/NIR spectroscopy and ultrafast time-resolved fluorescence anisotropy.
Formed the template-bound twelve-porphyrin nanotube in 32% yield, enclosing an internal cavity of approximately 4.5 nm³.
Recorded steady-state absorption and fluorescence red-shifted by ~300 cm⁻¹ relative to a six-porphyrin ring, demonstrating extended conjugation.
Observed ultrafast electronic excitation transfer from the longitudinal z-axis to the transverse xy-plane within 200 fs upon 742 nm excitation.

Cite This Study

Neuhaus et al. (2015) studied this question.

synapsesocial.com/papers/6a6fc80d26a7f98052dc6226 https://doi.org/10.1002/ange.201502735

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Implication

Chemical synthesis reveals three-dimensional electronic delocalization in a twelve-porphyrin molecular nanotube, indicating rapid intramolecular energy transfer across orthogonal axes.

A Molecular Nanotube with Three‐Dimensional π‐Conjugation

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Implication

Key Points

Cite This Study

A Molecular Nanotube with Three‐Dimensional π‐Conjugation

Discussion

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Implication

Key Points

Cite This Study

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