Reaction network governing diphosphine-protected gold nanocluster formation from nascent cationic platforms

Literature Information

Publication Date 2012-02-16
DOI 10.1039/C2CP22865C
Impact Factor 3.676
Authors

John M. Pettibone, Jeffrey W. Hudgens


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Abstract

We identify the reaction network governing gold monolayer protected cluster (MPC) formation during the reduction of Au(PPh3)Cl and L5 (L5 = 1,5-bis(diphenylphosphino)pentane) in solutions. UV-vis spectroscopy and electrospray ionization mass spectrometry (ESI-MS) monitored the formation of ligated Aux: 6 ≤ x ≤ 12 clusters, which comprise the reaction intermediates and final products. Initially, predominantly [Au2L52]2+ complexes form through dissolution of Au(PPh3)Cl. These complexes control the reduction and nucleation reactions that form nascent phosphine-ligated Au8 and Au10 ionic clusters. [Au10L54]2+ is an observed growth platform for ligated Au11 and Au12 clusters. The data for syntheses of Au : L5 systems evidence that the nascent reaction products (t < 3 days) are less dependent on the chosen reducing agent (borane tert-butylamine complex or NaBH4); instead, after reduction ceases, subsequent solution phase processing provides greater control for tuning cluster nuclearity.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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