Colloid & Surface Chemistry


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Candidates sought for COLL Executive Committee positions

Posted on August 27, 2014 at 4:20 PM

Dear ACS Colloid and Surface Chemistry Division Members,

The COLL Division of ACS is seeking candidates who would be interested in running for an officer position in the Division. (See below for a description of the open positions.) Being an officer is a great way of increasing your involvement in the Division, and having an impact on the many activities that the Division sponsors. COLL is an active and vibrant division of more than 2,600 members, and we are always looking for new people to participate in leading the Division. 

The open officer positions involve different levels of commitment and different activities. If you have any questions about a position of interest, please feel to contact me at or any of the other Division officers (a current list of officers can be found at

Elections will be held in early October. In order to have your name on the ballot, I (Mike Trenary) will need to hear from you, and have a copy of your current NSF-style CV (2 page) by September 26th at the latest. 

Thanks in advance for your continued support of the ACS Division of Colloid and Surface Chemistry.

REMINDER-DUE 9/15: Request for Nominations for The Kavli Foundation Emerging Leader in Chemistry Lecturer, Denver Meeting

Posted on August 27, 2014 at 4:20 PM

Reminder - Nominations are due September 15 for The Kavli Foundation Emerging Leader in Chemistry Lecturer, Denver Meeting. Please see the attached nomination form. Nominations should be sent to

Dr. Daniel J. Beltrán-Villegas wins 2014 LaMer Award

Posted on July 7, 2014 at 4:20 PM

Dr. Daniel J. Beltrán-Villegas received his Ph.D. in 2012 in Chemical and Biomolecular Engineering at Johns Hopkins University with Michael A. Bevan and is currently a postdoctoral fellow in Chemical Engineering at University of Michigan with Ronald Larson. His research interests revolve around techniques for measuring of colloidal particle conservative and dissipative forces and modeling of dynamic assembly processes. In 2012 he received the 2nd place in the Langmuir Student Award competition held during the 86th Colloids and Surface Science Symposium. His Ph.D. research accomplishments include 14 publications in Langmuir, Journal of Chemical Physics and Soft Matter.

Dr Daeyeon Lee Announced as 2014 Winner of Unilever Award for Outstanding Young Investigator in Colloid and Surfactant Science

Posted on July 7, 2014 at 4:20 PM

Dr. Daeyeon Lee, Associate Professor of Chemical Engineering and Biomolecular Engineering at the University of Pennsylvania was the recipient of the 2014 Unilever Award for outstanding young investigator in Colloid and Surfactant science. Daeyeon received his Ph.D. in Chemical Engineering from MIT in 2007 under Professors R.E. Cohen and M.F. Rubner. Prior to joining University of Pennsylvania in 2009, Daeyeon was a post-doctoral fellow at Harvard with David A. Weitz. Daeyeon has won several awards and recognitions including the 2010 Victor K LaMer Award and the NSF Career Award in 2011. Daeyeon’s Unilever award is in recognition of his outstanding work that merges the two important types of materials - surfactants and colloids; i.e., Janus particles. The fact that Janus particles can be synthesized now in large quantities and that their behavior emulates the properties and funtionality of molecular surfactants is both fundamentally and practically important.

2013 COLL Spring Newsletter

Posted on February 27, 2013 at 3:05 PM

Click here to view the Spring Newsletter.

Councilors' Statement on Divisional Name Change

Posted on November 9, 2012 at 2:50 PM

Division Name Change: Councilors Reflect on the Past, Present and Future of the

ACS Division of Colloid and Surface Chemistry 

The Division of Colloid and Surface Chemistry is in the process of formally proposing to the American Chemical Society to change its name to the Division of Colloids, Surfaces and Nanomaterials. Division members voted electronically on the question of whether to change the name, and over 90% of respondents voted in favor of the proposed change. More recently, some ACS members affiliated with other divisions have asked why our division is adding nanomaterials to its name, especially when nanomaterials are relevant to the activities of several other ACS divisions. Is this an attempt to stake a territorial claim to all ACS programming in the area of nanomaterials, to the detriment of other divisions? 

The answer to these questions is that the division seeks to incorporate into its name the terminology that is rapidly becoming the standard scientific terminology to describe the colloidal system - the material system that has always been the focal point for our division's scientificmission since it was established in 1925. This is not staking claim to new scientific "turf". It is simply a recognition that increasing numbers of scientists use terms such as"nanomaterial"or"nanoparticle" to describe precisely the class of systems that has always been known as a colloidal system.

Wolfgang Ostwaldwas the first chemist to specify a size range for colloids. In his book An Introduction to Theoretical and Applied Colloid Chemistry: The World of Neglected Dimensions(Authorized translation from the eighth German edition by Martin H. Fischer, John Wiley & Sons, New York, 1922), Ostwald stated that "Colloids are dispersed systems, in which the diameter of the dispersed particles in typical cases lies between one ten-thousandth and one one-millionth of a millimeter." Texts more modern than Ostwald's but still written before the nanotechnology revolution, such as Principles of Colloid and Surface Chemistry, by Paul Hiemenz and Raj Rajagopalan (Marcel Dekker 1997), define a colloid as "any particle that has some linear dimension between 10-9 m and 10-6 m". A new textbook, written well into the nanotechnology revolution, An Introduction to Interfaces and Colloids, the Bridge to Nanoscience by John Berg (World Scientific 2010), defines the linear dimension of colloids to be in the 1 nanometer to 10 micrometer range. This size range is repeated across the spectrum of modern colloid science textbooks. 

While the upper bound on the defined size of a colloid has increased since Ostwald's earliest specification, the lower bound of 1 nanometer as the definition of a colloidal system has never been challenged. The paradigm behind colloid chemistry has long been that colloids are a unique state of matter where system properties are dominated by surface phenomena, hence the ACS journal Langmuir, carries the subtitle The ACS Journal of Surfaces and Colloids.Nanomaterials are at the core of the science that this division has always embraced.The paradigm of surface-dominated behaviors, whether they concern nanoparticles, nanostructured materials or micrometer scale objects, has always driven the field forward. We recognize and accept that other divisions include nanomaterials as a subset of their scientific mission, but for this division they are central to our mission. 

To illustrate the trend in scientific terminology that is driving the proposed name change, consider how scientists refer to colloidal gold, the nanoscale material that lends a brilliant ruby red to medieval stained glass. Faraday's famous suspension of colloidal gold (now known as "gold nanoparticles" or "nanogold"), which has resisted aggregation for well over a century, is a standard textbook example for howthe surface chemistry of colloids can be manipulated to slow down the particle aggregation process that is thermodynamically inevitable. A Google Scholar keyword search on the term "colloidal gold" in patents and scientific articles, limited to the years 1900 - 1999, the year before the launch of the United States federal government's National Nanotechnology Initiative yields 46,200 hits. A keyword search on "gold nanoparticle" in the same time window yields just 2,240 hits. Change the time window to 2000 to 2012, the era of the nanotechnology revolution, and the results are striking. The term "colloidal gold" yields 66,900 hits and "gold nanoparticle" yields 79,900!While research on colloidal gold and its applications has clearly accelerated, venerable "colloidal gold" has been overtaken by the new terminology in just 12 years. Yet these terms describe the exact same state of matter.

Is this just an effort to "modernize" or to be "trendy"? Why does it matter which terminology is used if good science is being conducted? The division believes this name change is scientifically necessary because ensuring that proper information exchange occurs among diverse researchers is essential to our mission. Researchers who look at our division should know that we investigate nanomaterials. Younger investigators need to know that there is a vast wealth of scientific understanding at their disposal in the colloids literature, which is the foundation forthe "nanomaterials" literature. The mission of ACS divisions is to advance the chemical sciences. In the case of nanomaterials chemistry, this mission is served by taking measures to ensure that practitioners who work on the same systems but use different vocabularies do indeed come together to advance the science.

Other divisions have expressed concern about programming and membership, since several other divisions certainly do program actively in nanomaterials. Just as the Division of Colloid and Surface Chemistry supported the creation of the new Division of Catalysis Science and Technology, despite a long history of programming in the surface science of heterogeneous catalysis, the division in no way intends to interfere with the ability of other divisions to program in the nanomaterials area.Furthermore, our division has a long history of programming jointly with other divisions, andis eager to program jointly with other divisions who investigate nanomaterials. Since its inception, the division has emphasized the fundamental principles underlying the behavior of all colloids, including the 1 - 100 nm colloids now called nanoparticles. The division also encompasses surface science as a major focus (currently we are the Division of Colloids and Surface Chemistry) Why? Colloids and nanomaterials are dominated by their surface properties. Consequently, much of the surface chemistry programming of the division focuses on nanostructured materials and nanostructures supported on surfaces, both falling under the umbrella of "nanomaterials". The scientific concepts the division has promoted have led to many applications of these materials. Divisions representing technical areas where nanomaterials can be exploited to advantage, whether in novel food structures, new heterogeneous catalysts, new drug delivery vectors,or new materials derived from renewable forest products, should certainly feel encouraged to develop relevant programming. When the interests of divisions overlap, for example when symposium organizers seek to cross-fertilize ideas from different application areas or fundamental concepts, this division will eagerly welcome joint programming to the benefit of the science.

It is important for all of us that the American Chemical Society be a society that embraces change and modernization so as to best reflect the times we live in. The division name change encourages such modernization.

Colleagues remember Professor D. Wayne Goodman

Posted on April 16, 2012 at 3:45 PM

D. Wayne Goodman


D. W. (Wayne) Goodman passed away on Monday, February 27, 2012 at the age of 66, after a two-year battle with cancer which he fought with the same intensity as he brought to everything in his life. Those of us who knew him as a friend, scientific colleague and/or academic colleague greatly benefitted from that intensity, and are deeply saddened by this loss. His stellar research in unraveling the surface chemistry of catalysis has had a tremendous and lasting impact on this field.

Goodman made many seminal contributions to our understanding ofheterogeneous catalysis. His creative experiments used well-defined model catalysts to decisively identify numerous surface structure-function relationships in bimetallic catalysts and in oxide-supported metal nanoparticle catalysts and their underlying mechanistic explanations. His innovative approaches to establishing surface structure - function relationships in these areas have paved the way for many of the other groups who later became active in this arena. His papers and talks in this area eloquently outline how one could approach industrially-important yet fundamental questions in catalysis. Many researchers were stimulated by the excitement and clear-headed logic he projected, subsequently shifting their own research in the directions he had chosen.

One of Goodman's most important contributions has been in understanding oxide-supported metal nanoparticles and the relationships between their structure and catalytic activity, selectivity and sintering rates. Consider alone his 1998 Science paper where he and his students elegantly combined STM and reaction rate measurements to show that atomically cleanand well-definedgold nanoparticles, 2-3 nm in size, supportedon an ordered TiO2(110) surface, are exceedingly active as oxidation catalysts, whereas particles larger than 6 nm are completely dead. This, together with Haruta's earlier work in this area, led to the recent explosion in papers related to this subject. One can hardly open an issue of any of the major journals in catalysis or surface science which does not include at least one paper related to this topic. Goodman's paper alone has now received over 2000 citations.

In a similar manner, several other aspects of Goodman's research became the focus of much later research throughout the world. One cannot have a serious discussion about any single topic in bimetallic or alloy catalysis without citing some of Goodman's work that elucidated some fundamental feature of these systems. His most recent work in this area on PdAu alloy catalysts for vinyl acetate synthesis has elegantly established the atomic-level structure of the catalytically active site. 

Goodman published ~500 papers, almost exclusively in the field of surface science, with 50 of these having more than 100 citations each. He currently receives ~1600 citations per year, with a career total of ~24,000 citations and a Hirsch index of 76.

Goodman's research has been recognized by numerous awards, most notably: elected Fellows of the Royal Society of Chemistry, the ACS, the AVS and the IOP; the Gabor A. Somorjai, Arthur W. Adamson and Colloid and Surface Chemistry Awards of the ACS; the Burwell Lecturer, Humboldt Research Prize, and Ipatieff Lecturer. He served on the editorial boards of this and many other journals, and served multiple officer roles in the Colloid and Surface Chemistry Division of the ACS all the way up from Treasurer to its Chairman.

Goodman received his PhD in Physical/Organic Chemistry in 1975 from the University of Texas in Austin, with his research directed by Prof. M.J.S. Dewar. This included some of the earliest measurements and full analyses of the photoelectron spectra of inorganic molecules. He then spent five years at the National Bureau of Standards (later NIST), working as an NRC Associate under the supervision one of us (JTY) and Ted Madey, before becoming a NBS staff member. At NBS he left photoelectron spectroscopy of molecules to become a prominent leader in the measurement of the kinetics of catalytic chemistry at high pressures on metal single crystals. He was very early in applying surface science measurement methods to model catalysts, looking for structure-reactivity relationships, and understanding poisoning. He then worked at Sandia National Lab. from 1980-88, as research scientist and then Division Head. He then moved to Texas A&M University as a Professor of Chemistry, where he remained until his death, when he was holding the titles of Distinguished Professor of Chemistry and Robert A. Welch Chair.

On a personal level, Goodman was exceptionally likeable and fun to be with, exhibiting an unusual capacity to forge deep and lasting friendships with almost everyone. He was dedicated to his loving and beloved wife, Sandy, for 44 years, and his son, Jac. He possessed an infectious enthusiasm for science, life and people. He was a dedicated and beloved mentor to his students and postdocs, and extremely supportive of coworkers and senior colleagues alike. He possessed incredible skills with instrumentation, and was an amazing reader, with a superb memory for and grasp of the literature, both scientific and other. He enjoyed and thrived on competition and debate. He was an inspirational and eloquent speaker. He had unsurpassed humor and story-telling ability that captured eloquently the human condition, and most of his public lectures on scientific topics began with one or more humorous stories widely anticipated by the audience.As a younger man he was an outstanding athlete. He was an avid pilot of experimental airplanes, and crashed from the sky three times. He prided himself on his successful attempts to defy gravity in this way, and even jokingly referred to his confidence that he could beat cancer as just another metaphorical example. Indeed, he bought himself another plane just two months before his death to prove that point. Alas, it was not to be.

We speak for a large fraction of the readership in saying that this wonderfully humorous and likeable scientific powerhouse and friend will be sorely missed.

Charles T. Campbell
University of Washington 


John T. Yates, Jr.
University of Virginia

January 2012 Newsletter

Posted on January 6, 2012 at 2:05 PM

Please click here to view the 2012 Colloid and Surface Chemistry Division Newsletter.

January 2011 Newsletter

Posted on January 19, 2011 at 1:45 PM

Please click HERE to view a PDF file of the latest newsletter from the Colloid and Surface Chemistry division. If you have any suggestions for items that you would like to have included in future newsletters, please contact either John Walz or Bob Tilton with your suggestions.