Conformational Changes in Polymers with Interactive Side Chains

It is privilege and a pleasure for me to present a lecture in this symposium honoring the awarding of an Honorary Doctor of Science Degree to Professor Carl S. Marvel of the University of Arizona, by the Polytechnic Institute of New York. It was my privilege to work under the direction of Professor Marvel for my PhD degree, and then for two additional years as a research associate or postdoctoral fellow.     

History of the Conception of the Us-Japan Seminars on Polymer Synthesis

When the chairman of this US-Japan Symposium on Polymer Synthesis, Professor Virgil Percec, asked me to tell you how the seminar series was conceived and what was involved in initiating such a successful enterprise, I was very pleased to agree to do so. The thoughtfulness of our Chairman reminded me of the writings of an ancient Chinese philosopher who said: “The one who drinks water should think of he who dug the well.” I am glad that we all are drinking the water!

I am presenting here a brief history of the circumstances that led to the US-Japan Seminars on Polymer Synthesis, a cooperative program that I hope will continue for a long time. It was about 25 years ago that the initial idea of a US-Japan Seminar on Polymer Synthesis was realized. This concept led to the very successful first US-Japan Seminar in 1974.     

X-Ray Investigations on Celluloses Grafted by the Thiocarbonation Method

It is a pleasure for me to contribute to the symposium held in honor of my colleague and old friend Vivian Stannett. The topic of this contribution is results of x-ray investigations on graft modified cellulose fibers.     

Cover Picture: Journal of the Chinese Chemical Society 2/2013

This paper entitled Development of the Ireland–Claisen Rearrangement of Allyl‐2‐alkoxyacetate Bearing an Allylic Amine and the Transformation to 3‐hydroxy‐4‐hydroxy‐methylpyrrolidine was awarded Best Article Award in 2012. The authors gratefully acknowledge the National Science Council, in support of this research. A special acknowledgment also goes to the editorial and reviewers for their supporting in awarding our paper as one of the Best Articles in 2012. Noteworthily, the honor should belong to late Professor Yung‐Son Hon, as his initiative thoughts and extraordinary dedication went a long way in influencing the ideas in this article. For more information on this article, turn to J. Chin. Chem. Soc. 2012 , 59 (3), 273‐282.     

Development of electrochemistry in Serbia-challenges and perspectives

In this review, the development of electrochemistry in Serbia is presented, with an accent on historical moments from the beginning up to contemporary research directions. The pioneer in the establishment of electrochemical science was Professor Panta S. Tutundzic, who was elected Assistant Professor in Physical Chemistry and Electrochemistry in 1925, when the Department of Technology, previously integrated within the Technical Faculty in Belgrade, was established as a separate department. From the time of Professor Tutundzic′s group to today, a community of many eminent researchers has been involved in electrochemistry development, creating the world-renowned Belgrade School of Electrochemistry. It was not actually a formal school of electrochemistry but rather a variety of research directions, and first of all people doing excellent electrochemical science recognized at the international level. As one of the members of the contemporary active electrochemistry community from Serbia, and successors of the Belgrade School of Electrochemistry, I have both the special honor and the responsibility of presenting the historical contribution of such outstanding and internationally recognized scientists in the most appropriate way. Having in mind that any school and research area is predominantly determined by human resources, I will focus on the great contribution of the most prominent electrochemists, from the founders up to those active today. The main research directions were and still are electrodeposition, electrochemical reaction kinetics, electrocatalysis, energy production and storage, and corrosion and corrosion protection.

     

Structure in aqueous solutions of nonpolar solutes from the standpoint of scaled-particle theory

Underlying assumptions have been examined in scaled-particle theory for the case of a rigid-sphere solute in liquid water. As a result, it has been possible to improve upon Pierotti's corresponding analysis in a way that explicitly incorporates measured surface tensions and radial-distribution functions for pure water. It is pointed out along the way that potential energy nonadditivity should create an orientational bias for molecules in the liquid-vapor interface that is peculiar to water. Some specific conclusions have been drawn about the solvation mode for the nonpolar rigid-sphere solute.This paper is substituted for the talk given at the symposium, The Physical Chemistry of Aqueous Systems, held at the University of Pittsburgh, Pittsburgh, Pennsylvania, June 12–14, 1972, in honor of the 70th birthday of Professor H. S. Frank.Editor's note     

Concluding Remarks

Let me say first of all that I am much less fortunate than Professor Kennedy who was properly coached and told what he has to say. Not only that nobody coached me and told me what I should say in my final remarks, but nobody told me even that I have to make these remarks. So, in desperation, I tried to make a few notes during the meeting. I know that my secretary can read them, but I don't know if I can do it.     

Cover: Journal of the Chinese Chemical Society 6/2023

This memorial issue is a collection of papers that showcase the diverse research interests of the late Professor King-Chuen Lin (1953 – 2022) in the fields of physical chemistry, analytical chemistry, biophysics, and material chemistry. These papers have been contributed by Prof. Lin's friends, colleagues, and former group members. The global chemistry community deeply mourns the loss of Prof. Lin, and through this special issue, the invited contributors aim to honor his memory.

     

In Honor of Prof. Dr. Dr. hc Rainer Streubel

Rainer Streubel's significant contribution to the field of low-valent phosphorous chemistry has had a great impact on the field. This special collection was assembled to honor Prof. Streubel on the occasion of his retirement. The central theme is the beauty of inorganic chemistry.     

Ionic association in hydrogen-bonding solvents

Studies on ionic association in hydrogen-bonding solvents including water, aliphatic alcohols, fluorinated alcohols, formamide, ethylene glycol, and propanol-acetone mixtures are compared. Data were derived from measurements of conductivity, ultrasonic absorption, and viscosity of electrolyte solutions and diffusion of nonelectrolytes. It is concluded that electrolyte solvents can be divided into three categories according to whether they solvate effectively cations only, anions only, or both cations and anions. Water and most other hydrogenbonding solvents constitute the third class, a group in which patterns of ionic aggregation are very similar. Fluorinated alcohols belong to the second class, showing significantly different ion-pairing behavior.This paper was presented at the symposium, The Physical Chemistry of Aqueous Systems, held at the University of Pittsburgh, Pittsburgh, Pennsylvania, June 12–14, 1972, in honor of the 70th birthday of Professor H. S. Frank.     

A Festschrift in honor of Sándor Suhai’s 65th birthday

This is a multidisciplinary multifocus issue of TCA titled the Suhai Festschrift Honorary Issue commemorating the 65th birthday of Professor Sándor Suhai and his many contributions to the fields of molecular biophysics, bioinformatics, theoretical chemistry, chemical physics and molecular biology.     

Return to the RNAi world: rethinking gene expression and evolution (Nobel Lecture)

It's wonderful to be here today, I would like to start with the most important part, by saying thank you. First of all, I want to thank Andy Fire for being such a tremendous colleague, friend, and collaborator going back over the years. Without Andy I definitely wouldn't be here today. I need to thank the University of Massachusetts for providing for my laboratory, for believing in me, and for giving me not only a place and money, but great colleagues with whom to pursue my research. Without UMass and the great environment provided for me there, I probably would not be here today. And, of course my family; I'm not going to spend time now thanking them individually, but they know how important they are.     

The relation between repair of radiation damage and mutation induction

Abstract— This essay, written in honor of Alexander Hollaender's seventieth birthday, reviews the development of the concept of repair of premutational damage at both the biological and molecular levels. It stresses the important hut not exclusive role that repair processes play in determining the mutation yield, with emphasis on mutations induced by ultraviolet radiation. It points out that under special circumstances repair may be sufficiently efficient to almost completely eliminate premutational damage.     

Simulation vs. Understanding: A Tension,in Quantum Chemistry and Beyond. Part A. Stage Setting

We begin our tripartite Essay with a triangle of understanding, theory and simulation. Sketching the intimate tie between explanation and teaching, we also point to the emotional impact of understanding. As we trace the development of theory in chemistry, Dirac's characterization of what is known and what is needed for theoretical chemistry comes up, as does the role of prediction, and Thom's phrase “To predict is not to explain.” We give a typology of models, and then describe, no doubt inadequately, machine learning and neural networks. In the second part, we leave philosophy, beginning by describing Roald's being beaten by simulation. This leads us to artificial intelligence (AI), Searle's Chinese room, and Strevens’ account of what a go-playing program knows. Back to our terrain—we ask “Quantum Chemistry, † ca. 2020?” Then move to examples of AI affecting social matters, ranging from trivial to scary. We argue that moral decisions are hardly to be left to a computer. At this point, we try to pull the reader up, giving the opposing view of an optimistic, limitless future a voice. But we don't do justice to that view—how could we? We return to questioning the ascetic dimension of scientists, their romance with black boxes. Onward: In the 3rd part of this Essay, we work our way up from pessimism. We trace (another triangle!) the special interests of experimentalists, who want the theory we love, and reliable numbers as well. We detail in our own science instances where theory gave us real joy. Two more examples-on magnetic coupling in inorganic diradicals, and the way to think about alkali metal halides, show us the way to integrate simulation with theory. Back and forth is how it should be—between painfully-obtained, intriguing numbers, begging for interpretation, in turn requiring new concepts, new models, new theoretically grounded tools of computation. Through such iterations understanding is formed. As our tripartite Essay ends, we outline a future of consilience, with a role both for fact-seekers, and searchers for understanding. Chemistry's streak of creation provides in that conjoined future a passage to art and to perceiving, as we argue we must, the sacred in science.     

Simulation vs. Understanding: A Tension,in Quantum Chemistry and Beyond. Part A. Stage Setting

We begin our tripartite Essay with a triangle of understanding, theory and simulation. Sketching the intimate tie between explanation and teaching, we also point to the emotional impact of understanding. As we trace the development of theory in chemistry, Dirac's characterization of what is known and what is needed for theoretical chemistry comes up, as does the role of prediction, and Thom's phrase “To predict is not to explain.” We give a typology of models, and then describe, no doubt inadequately, machine learning and neural networks. In the second part, we leave philosophy, beginning by describing Roald's being beaten by simulation. This leads us to artificial intelligence (AI), Searle's Chinese room, and Strevens’ account of what a go‐playing program knows. Back to our terrain—we ask “Quantum Chemistry, ? ca. 2020?” Then move to examples of AI affecting social matters, ranging from trivial to scary. We argue that moral decisions are hardly to be left to a computer. At this point, we try to pull the reader up, giving the opposing view of an optimistic, limitless future a voice. But we don't do justice to that view—how could we? We return to questioning the ascetic dimension of scientists, their romance with black boxes. Onward: In the 3rd part of this Essay, we work our way up from pessimism. We trace (another triangle!) the special interests of experimentalists, who want the theory we love, and reliable numbers as well. We detail in our own science instances where theory gave us real joy. Two more examples‐on magnetic coupling in inorganic diradicals, and the way to think about alkali metal halides, show us the way to integrate simulation with theory. Back and forth is how it should be—between painfully‐obtained, intriguing numbers, begging for interpretation, in turn requiring new concepts, new models, new theoretically grounded tools of computation. Through such iterations understanding is formed. As our tripartite Essay ends, we outline a future of consilience, with a role both for fact‐seekers, and searchers for understanding. Chemistry's streak of creation provides in that conjoined future a passage to art and to perceiving, as we argue we must, the sacred in science.     

Nuclear magnetic relaxation and structure of aqueous solutions

By the interpretation of the intermolecular nuclear magnetic relaxation rate of¹⁹F the orientation of the water molecules in the hydration sphere of F^– can be determined. Similarly, the orientation of the water molecules around the methyl group of propionic acid in aqueous solution has been studied. Experiments are described which give information about the nature of association of solute in aqueous solution of a number of carboxylic acids and of ethanol. The local dynamic details of the I^– ion have been investigated. Some new results are briefly descussed regarding the nuclear magnetic relaxation by quadrupole interaction in electrolyte solutions.This paper was presented at the symposium, The Physical Chemistry of Aqueous Systems, held at the University of Pittsburgh, Pittsburgh, Pennsylvania, June 12–14, 1972, in honor of the 70th birthday of Professor H. S. Frank.     

UN sustainable development goals: How can sustainable/green chemistry contribute? Green chemistry as a source of sustainable innovations in the cosmetic industry

Sustainable innovation is a key-objective for our Group that has recently integrated the principles of sustainable development into all stages of a product's life cycle, from its design to consumer use. The following ambitious commitment: 100% of its products should bring an environmental (or social benefit) by 2020, will be reached, in particular, by integrating and giving a constant privilege to renewable raw materials -or ingredients-that originate from sustainable resources that fully comply with the green chemistry rules. In this short review, integration of Green Chemistry principles by our Group, strategies to identify new performing ingredients through sustainable chemistry as well as illustrative examples of innovative raw materials will be presented. With regard to the crucial respect of the environment of our planet, sustainable chemistry has become an indispensable turning point for industrial groups highly devoted to innovation.     

PREFACE

The 9^th International Symposium on Polymer Physics was held in Jinan,China,from June 6^th to 10^th,2010.This symposium was organized by The State Key Laboratory of Polymer Physics and Chemistry,China,MPI for Polymer Research,Germany,The University of Massachusetts,USA,and The Hokkaido University,Japan.It was sponsored by the National Natural Science Foundation of China,The Chinese Academy of Sciences（CAS）, Institute of Chemistry,CAS,Changchun Institute of Applied Chemistry,CAS,Polymer Division,Chinese Chemical Society,and Shandong University.     

Polymer Science at the University of Massachusetts

It gives me great pleasure to have this opportunity to welcome you to the Amherst campus ofthe University of Massachusetts. The Graduate School and its Polymer Science and Engineering Program are honored to host this International Colloquium of so distinguished a group of scientists.     

The role of solvent structure in ligand substitution and solvent exchange at some divalent transition-metal cations

The role of the solvent in reactions involving ions is considered in relation to the structure of liquids. The rate constants and activation parameters for ligand substitutions at divalent transition metal cations in various solvents are compared with those for solvent exchanges. The differences are related to structural properties of the solvents, represented by their heats of evaporation and fluidities, and interpreted with the aid of a model developed from that of Frank and Wen. Water is not a typical solvent.This paper was presented at the symposium, The Physical Chemistry of Aqueous Systems, held at the University of Pittsburgh, Pittsburgh, Pennsylvania, June 12–14, 1972, in honor of the 70th birthday of Professor H. S. Frank.