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...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).展开更多
基金We thank the Australian Research Council(DP170100411:M.G.H.and M.S.)the National Science Centre(NCN)Poland(UMO-2016/22/M/ST4/00275:J.K.Z.and M.S.)for support of this work.C.Q.thanks Becas Chile(Agencia Nacional de Investigacion y Desarrollo)for financial support in the form of a PhD scholarship(2015-72160061),J.P.L.M.thanks the Australian Government for an Australian Postgraduate Award,J.D.thanks the China Scholarship Council and the Australian National University for a CSC-ANU scholarship,and J.K.Z.thanks the Foundation for Polish Science(FNP)for support.The authors acknowledge the facilities,and the scientific and technical assistance,of the Australian Microscopy&Microanalysis Research Facility and the Centre of Advanced Microscopy at the Australian National University.
文摘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).
