It was with profound sadness that we learned of the passing of our friend and colleague Dong Qin. Dong was a Professor of Materials Science and Engineering at the Georgia Institute of Technology, with an adjunct appointment in the School of Chemistry & Biochemistry. She was an incredibly positive and caring person, as well as an excellent researcher, mentor, and teacher. Dong had a diverse career in science and made significant contributions to many different topics (see, nanodq.com). She received her B.Sc. in Chemistry from Fudan University in 1990 and a Ph.D. in Physical Chemistry with Hai-Lung Dai at the University of Pennsylvania in 1996 where she studied the energy relaxation kinetics of highly excited molecules in the gas phase. After completing her Ph.D., Dong took a postdoctoral research position with George M. Whitesides at Harvard University (1996–1997) where she worked on soft lithography and rapid prototyping methods. Before joining Georgia Tech in 2012, she held administrative positions as Associate Dean of Research in the School of Engineering and Applied Science at Washington University in St. Louis (2007–2011) and Associate Director of the Center for Nanotechnology at the University of Washington (1998–2007). She also completed an MBA from the University of Washington in 2003. At Georgia Tech, Dong established a vibrant group working on the colloidal synthesis of noble-metal nanocrystals having complex but well-controlled compositions and structures, with an ultimate goal to elucidate the mechanistic details for the rational production of novel materials with designer properties for an array of applications. (1−4) In one example, her group successfully demonstrated the ability to deposit a less reactive metal on the surface of silver nanocrystals for the fabrication of bimetallic systems with a core–frame or core–shell structure by introducing a faster parallel reaction to compete with and thus suppress the galvanic replacement reaction. (5−12) Dong also pioneered a set of in situ techniques based on surface-enhanced Raman spectroscopy (SERS) for the characterization of atomic/molecular events on the surface of noble-metal nanocrystals in a liquid phase and under operando conditions. (13−16) To this end, her group developed a set of isocyanide-based SERS probes to investigate the heterogeneous nucleation and growth of a second metal such as palladium and platinum on the edges of silver nanocubes. They demonstrated the capability to detect as few as 27 platinum atoms being deposited onto the edge of a 40 nm silver nanocube. This research not only greatly advances our understanding of the nucleation and growth of bimetallic nanocrystals but also paves the way for rational and deterministic synthesis of nanomaterials with desired and controlled properties. Lastly, Dong extensively investigated the use of bimetallic nanocrystals as a bifunctional probe with integrated catalytic and plasmonic activities for catalyzing stepwise reactions while reporting on the intermediate species in real time through in situ SERS. (17−20) Figure 1 shows some examples of the beautiful materials that the Qin group was able to produce and applications of these materials to in situ studies of catalysis. Figure 1. Left: HAADF-STEM images taken from two samples of silver nanocubes with three (A, B) or six (C, D) atomic layers of gold deposited on the surface. Reprinted with permission from ref (5). Copyright 2014, American Chemical Society. Right: (A) SERS spectra showing the reduction of 4-nitrothiophenol (4-NTP) to 4-aminothiophenol (4-ATP) by NaBH₄ catalyzed by the Ag@Au concave cuboctahedra, with the formation of trans-4,4′-dimercaptoazobenzene (DMAB) as an intermediate. (B) Schematic illustration of the reaction pathway. Reprinted with permission from ref (17). Copyright 2016, American Chemical Society. Dong was elected as a Fellow of the Royal Society of Chemistry (FRSC) in 2021 in recognition of her research contributions to nanoscience. She served as an Associate Editor of Nanoscale and Nanoscale Advances (2020–2023), as well as an advisory board member of Nanoscale Horizon, Journal of Materials Chemistry C, and ChemNanoMat. She was also a recipient of multiple Teaching Excellence Awards from Georgia Tech. Dong is survived by Younan Xia (spouse), Qike Zheng (mother), and Fawn Wang (sister) and was preceded in death by her father Qizong Qin. Dong’s kindness and warmth touched everyone who met her. She had a tremendous enthusiasm for science that motivated her students and colleagues alike. She will be greatly missed by those of us in the physical chemistry and nanoscience communities who had the pleasure to know her. In her honor, an endowed fund has been created at the American Chemical Society (ACS) to establish and support the Dong Qin ACS Award in Nanochemistry. This award will recognize creative and impactful research by an investigator in the area of nanochemistry, broadly defined. The inaugural award is expected to open for nominations in the Fall of 2024 and be presented at the 2026 spring national ACS meeting. Another endowed fund has also been created at the University of Pennsylvania to establish and support the Dong Qin Distinguished Lecture in Materials or Physical Chemistry in the Department of Chemistry. The inaugural lecture will be delivered by Professor John A. Rogers, with whom Dong collaborated during their postdoctoral training. This viewpoint is jointly published in Chemistry of Materials and The Journal of Physical Chemistry C. This article references 20 other publications. This article has not yet been cited by other publications. Figure 1. Left: HAADF-STEM images taken from two samples of silver nanocubes with three (A, B) or six (C, D) atomic layers of gold deposited on the surface. Reprinted with permission from ref (5). Copyright 2014, American Chemical Society. Right: (A) SERS spectra showing the reduction of 4-nitrothiophenol (4-NTP) to 4-aminothiophenol (4-ATP) by NaBH₄ catalyzed by the Ag@Au concave cuboctahedra, with the formation of trans-4,4′-dimercaptoazobenzene (DMAB) as an intermediate. (B) Schematic illustration of the reaction pathway. Reprinted with permission from ref (17). Copyright 2016, American Chemical Society. This article references 20 other publications.

中文翻译：

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致敬董秦

得知我们的朋友兼同事董勤去世的消息，我们深感悲痛。董是佐治亚理工学院材料科学与工程教授，并在化学与生物化学学院兼职。她是一个非常积极和有爱心的人，也是一位优秀的研究员、导师和老师。董在科学领域拥有多元化的职业生涯，并对许多不同的主题做出了重大贡献（请参阅 nanodq.com）。她获得了学士学位。 1990年毕业于复旦大学化学系，获学士学位。 1996 年，她在宾夕法尼亚大学师从戴海龙 (Hai-Lung Dai) 获得物理化学博士学位，研究气相中高度激发分子的能量弛豫动力学。完成博士学位后，Dong 在哈佛大学与 George M. Whitesides 一起担任博士后研究职位（1996-1997 年），在那里她从事软光刻和快速原型制作方法的研究。在 2012 年加入佐治亚理工学院之前，她曾担任圣路易斯华盛顿大学工程与应用科学学院研究副院长 (2007-2011) 和华盛顿大学纳米技术中心副主任 (2007-2011) 等行政职务。 1998-2007）。她还于 2003 年获得了华盛顿大学的 MBA 学位。在佐治亚理工学院，董建立了一个充满活力的团队，致力于贵金属纳米晶体的胶体合成，该贵金属纳米晶体具有复杂但控制良好的成分和结构，最终目标是阐明其机理。合理生产具有设计师特性的新型材料的详细信息，适用于一系列应用。 (1−4) 在一个例子中，她的团队成功地证明了在银纳米晶体表面沉积一种反应性较低的金属的能力，通过引入更快的平行反应来制造具有核-框架或核-壳结构的双金属系统竞争并从而抑制电替代反应。 (5−12) 董还开创了一套原位基于表面增强拉曼光谱 (SERS) 的技术，用于表征液相和操作条件下贵金属纳米晶体表面的原子/分子事件。 (13−16) 为此，她的团队开发了一套基于异氰化物的 SERS 探针，用于研究第二种金属（例如钯和铂）在银纳米立方体边缘的异质成核和生长。他们展示了检测沉积在 40 nm 银纳米立方体边缘的少至 27 个铂原子的能力。这项研究不仅极大地增进了我们对双金属纳米晶体成核和生长的理解，而且为合理和确定性合成具有所需和受控性能的纳米材料铺平了道路。最后，Dong 广泛研究了使用双金属纳米晶体作为具有集成催化和等离子体活性的双功能探针来催化逐步反应，同时通过原位SERS 实时报告中间物质。 (17−20) 图 1 显示了秦组能够生产的美丽材料的一些示例以及这些材料在催化原位研究中的应用。图 1. 左图：从表面沉积有三个（A、B）或六个（C、D）金原子层的银纳米立方体样品中获取的 HAADF-STEM 图像。经参考文献 (5) 许可转载。版权所有 2014，美国化学会。右图：(A) SERS 光谱显示 Ag@Au 凹面立方八面体催化 NaBH ₄将 4-硝基苯硫酚 (4-NTP) 还原为 4-氨基苯硫酚 (4-ATP) ，并形成反式-4,4' -二巯基偶氮苯 (DMAB) 作为中间体。 (B) 反应途径的示意图。经参考文献 (17) 许可转载。版权所有 2016，美国化学会。董于 2021 年当选为英国皇家化学学会 (FRSC) 院士，以表彰她对纳米科学的研究贡献。她曾担任Nanoscale和Nanoscale Advances的副主编（2020-2023），以及Nanoscale Horizo​​n、Journal of Materials Chemistry C和ChemNanoMat的顾问委员会成员。她还获得了佐治亚理工学院的多项卓越教学奖。董氏身后有夏友南（配偶）、郑其克（母亲）和王芳（妹妹），先于她的父亲秦启宗去世。董的善良和温暖感动了每一个见到她的人。她对科学充满热情，激励着她的学生和同事。我们这些物理化学和纳米科学界有幸认识她的人将会非常怀念她。为了纪念她，美国化学会 (ACS) 设立了一项捐赠基金，用于设立和支持秦冬纳米化学 ACS 奖。该奖项将表彰广泛定义的纳米化学领域的研究人员的创造性和有影响力的研究。首届奖项预计将于 2024 年秋季开放提名，并在 2026 年春季全国 ACS 会议上颁发。宾夕法尼亚大学还设立了另一项捐赠基金，用于建立和支持化学系的东秦材料或物理化学杰出讲座。首场讲座将由约翰·A·罗杰斯教授主讲，董在博士后培训期间曾与他合作。这一观点发表在Chemistry of Materials和The Journal of Physical Chemistry C上。本文参考了其他 20 篇出版物。这篇文章尚未被其他出版物引用。图 1. 左图：从表面沉积有三个（A、B）或六个（C、D）金原子层的银纳米立方体样品中获取的 HAADF-STEM 图像。经参考文献 (5) 许可转载。版权所有 2014，美国化学会。右图：(A) SERS 光谱显示 Ag@Au 凹面立方八面体催化 NaBH ₄将 4-硝基苯硫酚 (4-NTP) 还原为 4-氨基苯硫酚 (4-ATP) ，并形成反式-4,4' -二巯基偶氮苯 (DMAB) 作为中间体。 (B) 反应途径的示意图。经参考文献 (17) 许可转载。版权所有 2016，美国化学会。本文参考了其他 20 篇出版物。