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|Title:||Sequence-specific synthesis of platinum-conjugated trichromophoric energy cascades of anthracene, tetracene, and pentacene and fluorescent "black chromophores"|
|Source:||Nguyen, M.-H., Nguyen, V.H., Yip, J.H.K. (2013-12-23). Sequence-specific synthesis of platinum-conjugated trichromophoric energy cascades of anthracene, tetracene, and pentacene and fluorescent "black chromophores". Organometallics 32 (24) : 7283-7291. ScholarBank@NUS Repository. https://doi.org/10.1021/om400578t|
|Abstract:||A sequence-specific synthesis of trichromophoric energy cascades containing anthracenyl (A), tetracenyl (T), or pentacenyl (P) rings is achieved by coupling PtII ions and singly desilylated bis(triisopropylsilylethynyl)acenes (acene = anthracene, tetracene, or pentacene). Four sequences, T-P-T, P-T-P, A-P-T, and A-T-P, are generated. Absorption spectra of the triads show intense bands due to the S0 → S1 transitions of the acenes. The A-P-T and A-T-P, being able to absorb strongly throughout the entire visible region, are rare examples of "black chromophores". Different sequences are shown to have different emission fingerprints. Emission spectra of A-P-T and A-T-P show that excitation at the S0 → S1 band of A gives rise to emissions from the S1 excited states of A, T, and P, implying the presence of energy transfer from the excited state of A to those of T and P. © 2013 American Chemical Society.|
|Appears in Collections:||Staff Publications|
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