The Mid-Hudson Section of the American Chemical Society Presents:

The Chemistry of 3D-Printing

Dr. Daniel Freedman
Dean of the School of Science and Engineering, SUNY New Paltz, New Paltz, New York

Place: SUNY New Paltz, Science Hall, Rm 181
This talk has been postponed until after the current Corona Virus 19 restrictions have been lifted
A Tour of the Hudson Valley Additive Manufacturing Center will be Conducted after the Presentation

Abstract: Additive manufacturing (more commonly known as 3D printing) has been used for years for prototyping, but with the increase in the sophistication of 3D printing processes and the incredible range of materials available, 3D printing is being used increasingly for final part production in a very wide variety of fields. This talk will give a brief overview of the different 3D printing processes and materials, describe some of the applications of those processes taken from the projects we have done in the Hudson Valley Additive Manufacturing Center and explore some of the more interesting chemical and materials aspects of 3D printing, focusing on polyjet and fused deposition printing.

Speaker Bio: Dan Freedman completed a BA in Chemistry from Macalester College and PhD in Inorganic Chemistry from the University of Minnesota back when there were considerably fewer elements in the periodic table. After a 20-year career teaching a variety of chemistry lecture and lab courses, he embarked on a second career as Dean of the School of Science and Engineering at SUNY New Paltz in 2012. He helped found the Hudson Valley Additive Manufacturing Center in 2014 and is occasionally mistaken for an expert on 3D printing. His research most recently has focused on developing inorganic materials for extreme UV lithography and applications of materials in 3D printing.

Hudson Valley Additive Manufacturing Center: The center provides expert advice on 3D printing process and materials and design for additive manufacturing to the SUNY New Paltz and the Hudson Valley business community. The collection of 3D printers constitute some of the most advanced technology at any academic lab in the country and are available for the campus and wider community to print on.
HVAMC is located at the Engineering Innovation Hub, Room 103, SUNY New Paltz, 1 Hawk Drive, New Paltz, NY

Note: This talk is open to the General Public

Location of the Science Hall Building and Parking can be obtained from https://www.newpaltz.edu/map/

Callan McLoughlin of Process NMR Associates will be presenting analytical work we have performed on hemp raw materials and products. Below is the information on the talk.

The Mid-Hudson Section of the American Chemical Society Presents:

Hemp – the role of cannabinoid analysis in farming, processing, product development, and product monitoring – 1H qNMR and HPLC method development

Callan McLoughlin, Process NMR Associates, LLC and Ron Spadafora, Spadafarm, LLC

Date: February 27th, 2020, at 7pm – Light Refreshments will be served from 6:30 pm

Place: Vassar College, Bridge for Laboratory Sciences, Room 217

With the recent legalization of Hemp Cannabis sativa nationwide, and the rapidly expanding market for cannabidiol (CBD) products, there has been an increasing demand for phytochemical and cannabinoid analysis. A brief description will be provided on the Industrial Hemp Research Initiative in New York State. In recent years, the accepted gold standard for cannabinoid detection and quantification has been High Performance Liquid Chromatography (HPLC). Although this method has been successful, HPLC requires a large volume of solvents and regular calibration with expensive standards of the cannabinoids of interest. In conjunction with in-house HPLC method development, an independent quantitative Nuclear Magnetic Resonance (qNMR) spectroscopy approach was developed for the detection and quantification of cannabinoids such as THC, THCA, CBD, CBDA and CBN. Rapid extraction procedures utilizing deuterated chloroform for immediate qNMR hemp analysis were developed and standardized. The qNMR method developed was subsequently validated by HPLC, confirming the methods efficacy. Furthermore, the HPLC and qNMR methods are being validated in a University of Kentucky proficiency testing program comprising the statistical analysis of results on round-robin tests from 67 laboratories.

With access to a local hemp farm, an analysis of cannabinoid concentration based on flower location and plant maturation was performed. With a thorough understanding of the New York State hemp market, agriculture, and botanical processing, working with the farm was a useful partnership for the development of the analytical method and facilitation of the research. The height placement of flower and leaf location on the plant was found to significantly impact cannabinoid concentration. On average, hemp flower located near the top of the plant tested 15-20 wt% higher in potential CBD compared to hemp flower located near the bottom. Monitoring of hemp in the field was undertaken and a substantial increase (50-100 wt%) in cannabinoid concentration was observed during the final two weeks before harvest. Decarboxylation studies of CBDA to CBD was conducted at 105°C, 125°C, and 148°C over the course of an hour and the profiles of the rate of decarboxylation of CBDA to CBD were fit to a sigmoidal function. Finally, a number of topical and oral oil products, vape products, beverages, and edible gummy products were analyzed by 1H qNMR for CBD potency and quality assurance.

Bio: Callan McLoughlin is a graduate of Our Lady of Lourdes HS in Poughkeepsie and a 2019 graduate of Marist College obtaining a BA in Biochemistry. He currently works at Process NMR Associates in Poughkeepsie as an analytical chemist. He will be presenting this research at the National ACS meeting in Philadelphia on March 22. He is currently applying for Ph.D. programs in Chemistry for Fall 2020.

Bio: Ron Spadafora is CEO of Spadafarm in Lagrangeville, NY and is a New York State Industrial Hemp Research Partner licensed to grow, process and extract CBD hemp flower into CBD oil. He works closely with researchers from Cornell University and SUNY on hemp related research and is currently a Principal Investigator for phytoremediation projects that utilize hemp plants to remove heavy metals from wastewater and soil. He graduated from George Washington University in Washington, DC and spent most of his career working as a systems analyst helping stakeholders within organizations to streamline and automate business and scientific processes.

Note: This talk is open to the public and anyone interested in the topic is invited to attend.

As 2020 Chair of the Mid-Hudson section of the American Chemical Society it is my honor to host an excellent technical talk by Dr John Galbraith of Marist College. The talk will be presented at the Hancock Center (room) of Marist College at 7pm details can be found here – https://www.midhudsonacs.org/events.html

Charge-Shift Bonding: Redefining Our Concept of the Chemical Bond

Dr. John Morrison Galbraith
Department of Chemistry Biochemistry, and Physics, Marist College, Poughkeepsie, NY, USA,

Place: Marist College, Hancock Center, Rm 2023
Date: January 28th, 7 pm – Light Refreshments served from 6:30 pm

Abstract: The foundation of our understanding of the chemical bond dates back to the pioneering work of G. N. Lewis. Lewis’s ideas were then framed in the language of quantum mechanics by Pauling and Slater resulting in the present-day classification of chemical bonds as either covalent/polar covalent or ionic. However, in the early 1990’s a new form of chemical bonding, charge-shift bonding (CSB), began to emerge. Originally CSB was seen as an anomaly of valence bond theory by which it was discovered. However, in recent years CSB has been gaining attention and is being recognized by other forms of theory such as molecular orbital theory, electron density theories, energy decomposition analysis, and energy stress tensors. In this talk I will discuss our work regarding CSB over the past several decades. I will start by describing the valence bond VB methods by which CSB was first recognized and later probed. I will then define CSB and discuss the root causes of this new type of interaction. Lastly, I will show that CSB is not simply an artifact of the VB methodology and describe how it is present in other forms of theory as well. I will then show some experimental manifestations of this unique bonding situation and discuss its potential applications. The chemical bond is at the heart of chemistry and the way we view bonds has remained unchanged for over 100 years. CSB is a real and unique form of chemical bond that has the potential to completely change the way we think about chemistry.

A brief description of this work was featured on the WAMC national production The Academic Minute (https://academicminute.org/about/) in September of 2019. “The Academic Minute features researchers from colleges and universities around the world, keeping listeners abreast of what’s new and exciting in the academy and of all the ways academic research contributes to solving the world’s toughest problems and to serving the public good.” The audio file as well as a written transcript can be found at: https://academicminute.org/2019/09/john-galbraith-marist-college-chemical-bonding/

Biography of presenting author: John Morrison Galbraith received his PhD from the University of Georgia in 1997 working with Professor Henry F. Schaefer III. He then held postdoctoral positions at the Hebrew University of Jerusalem where he worked with Sason Shaik and the University of Washington where worked with Weston Thatcher Borden. Since 2001 he has been a faculty member at Marist College in Poughkeepsie, NY where he teaches and works primarily with undergraduate students. His current research interests involve theoretical descriptions of chemical bonding mostly using valence bond theory. The work discussed in this presentation began during his postdoctoral appointment in Israel and continues to this day.