【摘 要】
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Oligo(p-phenyleneethynylene)s (OPEs) end-capped with (alkynyl)bis(diphosphine)ruthenium and thiol/thiolate groups stabilize ca.2 nm diameter gold nanoparticles
【机 构】
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Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia;Advanced
论文部分内容阅读
Oligo(p-phenyleneethynylene)s (OPEs) end-capped with (alkynyl)bis(diphosphine)ruthenium and thiol/thiolate groups stabilize ca.2 nm diameter gold nanoparticles (AuNPs).The morphology,elemental composition and stability of the resultant organometallic OPE/AuNP hybrid materials have been defined using a combination of molecular-and nano-material chacterization techniques.The hybrids display long-term stability in solution (more than a month),good solubility in organic solvents,reversible rutheniumcentered oxidation,and transparency beyond 800 nm,and possess very strong nonlinear absorption activity at the first biological window,and unprecedented two-photon absorption activity in the second biological window (σ2 up to 38,000 GM at 1,050 nm).
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