Meeting September 21st

September 2021 Kentucky Lake Section Meeting

Designing Ligands: Imparting Electronic and Steric Control at Transition Metal Centers

Featuring Dr. Kensha Clark,
Assistant Professor, University of Memphis

Tuesday, September 21st 

Dinner @ 6:00 pm, Presentation @ 7:00 pm

Join Virtually via Zoom (Meeting ID TBA)
–or–
Attend Live at Union University Carl Grant Center, Salon II
Jackson, TN 38305

Dinner: Garden Salad, Chicken Marsala, Grilled Pork Tenderloin,
Au Gratin Potatoes, Sauteed Green Beans,
Chocolate Explosion w/ ice cream

Dinner Price is $10 (Students $5)

Abstract:  The selection of task-appropriate ligands to support transition metal centers is the first, imperative step towards exacting targeted behavior from molecular transition metal complexes. In our research, ligands are used to impart unique electronic properties or to provide steric control at metal ions, that can be exploited for materials and catalysis applications. In this talk, our approach to ligand design will be discussed in the context of electronic and magnetic molecule synthesis, as well as its application to sustainable catalysis.

Bio: Dr. Clark received her B.S. from the University of Illinois at Chicago (UIC) in 2002 and began M.S. work in the same department in 2003. During this time, she performed inorganic chemistry research under the guidance of Dr. Lisheng Cai and Prof. John Morrison. From UIC, she began her PhD at the University of California, Irvine working with Prof. Alan Heyduk exploring redox active ligands. During her graduate studies, Dr. Clark was awarded a fellowship by the American-Scandinavian Foundation as a fellow to Denmark where she spent nearly a year in the lab of Prof. Jesper Bendix at the University of Copenhagen. After finishing her PhD in 2010, she began work as an NIH postdoctoral fellow under the mentorship of Prof. Amir Hoveyda. At the end of 2011, Dr. Clark started her research career as an industrial chemist at Chevron Phillips Chemical Company, LP in the Polyolefins Catalyst and Product Development group. During her 5.5 years at Chevron-Phillips, she was awarded 18 US and international patents. She began as an assistant Professor at the University of Memphis in 2017. Her research uses ligand electronic behavior and/or architecture to control behavior at transition metal centers.

Fall Picnic and Meeting Sept 2

 Kentucky Lake Section Meeting

Annual Fall Picnic

Thursday, September 2, 2021
6-8 pm

at
Bailey Pavilion at Central Park
Gil Hopson Drive, Murray KY

Dinner:
Nepali Momo, BBQ, veggie burgers, picnic-style sides and desserts

The price is $10 (Students $5) 
 
After a LONG season of virtual meetings, we’re happy to announce that we are planning our first in-person event in 16 months!  We hope that you will feel comfortable attending this open-air, outdoor, family-friendly event; we’d love to see you there!

 

During the picnic, we will talk about the fall meeting schedule and recognize the 2021 KLS-Chemists Celebrate Earth Week Illustrated Poem Contest Award Winners.

 

Meeting April 15th

April 2021 Kentucky Lake Section Meeting

Exploring the Structures and Properties of Strongly Bound Atomic Clusters

Thursday, April 15th @ 7:00 pm

Join Virtually via Zoom
(Meeting ID TBA)

Speaker: Dr. Jonathan T. Lyon, Murray State University

Abstract: Strongly bound atomic clusters are often used as ideal models for the active sites in bulk material. Despite the increased scientific interest in cluster sized particles, open questions remain about the structure, stability, and related properties of specific cluster systems. We present here recent investigations on clusters containing between 2 and 25 atoms. Theoretically, we utilize global optimization procedures to locate new local and global minima candidates. These structures are further optimized with different density functional and ab initio techniques and electronic, vibrational, and internal bonding properties are explored. Complementary experimental matrix isolation infrared experiments currently being assembled will also be discussed. Specific systems presented here include transition metal clusters, doped semiconductor clusters, and metal hydride clusters. Items of particular interest with these systems include novel cluster geometries, cluster size/stability relationships, exohedral to endoheral doped cluster transitions, and hydrogen adsorption energetics.

Chemists Celebrate Earth Week April 18-24th

“Reducing Our Footprint with Chemistry”

For years, chemists have promoted a better world through recyclable plastics, cleaner-burning fuels, phosphate-free detergents, environmental monitoring and green chemistry initiatives. Each year, the American Chemical Society highlights these initiatives and chooses a specific theme to help focus the observance of Chemists Celebrate Earth Week (CCEW). This year’s theme is, “Reducing Our Footprint Through Chemistry”.

K-12 Poetry Contest

One activity in the Chemists Celebrate Earth Week program is the national illustrated poem contest for students in grades K-12. The poems, which are judged based upon relevance to and incorporation of the yearly theme, can be any style including: haiku, limerick, ode, ABC poem, free verse, end rhyme, blank verse and sonnet; but no longer than 40 words.

Submissions

K-12 students are invited to submit illustrated poems directly via the new online submission form. 

Student Submission Deadline: Sunday, April 25, 2021

First-place winners in each of the national contest’s grade categories will win $300. Second place winners in each grade category will win $150.

Questions about submitting an entry?

Contact: Dr. Bommanna Loganathan, CCEW Coordinator, KLS-ACS. Phone: 270-809-3044

Meeting March 18th

Kentucky Lake Section ACS Meeting

Thursday, March 18th, 2020 at 7pm

Kentucky Lake ACS
Professional Chemists Panel

Katelyn Foppe Biobot Analytics (Boston, MA)
Samantha Sims Mayfield High School
Chase Haynes Packaging Corporation of America
Tony Polanco Estron Chemical LLC (Calvert City, KY)

Meeting January 26th

January 2021 Kentucky Lake Section Meeting

Dye Molecule-Based Porous Organic Polymers

Tuesday, January 26, 2021
7:00 pm

Join Virtually via Zoom
(Meeting ID TBA)

Speaker: Dr. Grace Eder, Murray State University

Speaker Bio:  Dr. Grace Eder (she/her) is a synthetic organic and materials chemist interested in using chemistry to help find new strategies to tackle big problems. Dr. Eder received her B.S. in chemistry from Case Western Reserve University in Cleveland, OH. She then went on to pursue a Ph.D. at The Ohio State University in Columbus, OH under the mentorship of Dr. Psaras McGrier. During her Ph.D., Dr. Eder found that she quite enjoyed teaching, and completed a teaching post-doc at Macalester College in Saint Paul, MN. At Macalester College Dr. Eder also mentored undergraduate researchers, which helped her decide to pursue both teaching and research. She is currently an assistant professor at Murray State University in Murray, KY where she is starting her research program on 1, 2, and 3D polymer materials for sustainability applications.

Meeting November 12th

Kentucky Lake Section ACS Meeting

Including KLS Election Info and Awards

Thursday, November 12, 2020 at 7pm

Graduate Student Panel

Bailee Barrett LSU (UT-Martin graduate)
Abby Bratton Virginia Tech (MSU graduate)
Samantha Daymon University of Southern Miss (MSU graduate)
Quentin Savage Baylor University (UT-Martin graduate)

Meeting October 22nd

Kentucky Lake Section ACS Meeting
-AND-
National Chemistry Week Demo Show

Live from UT Martin Brehm Hall
-AND-
Virtually via Zoom

Thursday, October 22nd, 2020
Dinner @ 6:00 pm, Virtual Demo Show @ 7:00 pm

Dinner: BBQ Sandwich, Potato Salad, Coleslaw, & Chips
Dinner Price is $10 (Students $5)

This year, each university SMACS chapter is invited perform a demo (or five!), ideally in line with the theme “sticking with chemistry,” and always with safety and learning in mind.  We hope to encourage our student members to challenge their professors to do some demos too — some friendly competition, if you will!  Please send all videos to Dr. Abigail Shelton no later than Wednesday October 21st 5pm.  (If the video files are too large to send by email, consider using a dropbox or google drive link)

Meeting September 15th

September 2020 Kentucky Lake Section Meeting

Tuesday, September 15th, 2020
Dinner @ 6:00 pm, Presentation @ 7:00 pm
Dinner Price is $10 (Students $5)

Live at Union University
Carl Grant Events Center
Jackson, TN 38305

– OR –
Join Virtually via Zoom
(Meeting ID TBA)

Dinner:  Caesar Salad, Beef Lasagna, Monterey Chicken, Scalloped Potatoes, Sweet Corn, Chocolate Explosion

Program: Transition metal dichalcogenides for applications in hydrogen evolution reaction, CO2 reduction, and photoluminescence spectroelectrochemistry

Speaker: Lyndi Strange, 5th Year PhD Candidate at University of Alabama

Abstract:  Transition metal dichalcogenides (TMDs) are semiconductors of the form MX2, where M is a transition metal (Mo, W, etc.) and X is a chalcogen atom. They are typically structured in hexagonal layers of M atoms sandwiched between two layers of X atoms. Two-dimensional TMDs (2D-TMDs) consist of a single layer of atoms have the structure X-M-X and have electronic properties that differ from the bulk material. For instance, the bandgap of MoS2 changes from an indirect bandgap in the bulk to a direct bandgap as a monolayer. In the search for better catalysts for renewable energy, TMDs have emerged as an interesting and promising catalyst for several avenues of alternate energy such as photovoltaic water splitting anodes, hydrogen evolution reaction, CO2 reduction, photovoltaic absorber layers, and protective layers for photovoltaic devices. The structure of the TMDs can also be tuned at the monolayer level to increase catalytic activity by doping and introducing defects, which has been shown increase activity towards electrocatalytic hydrogen reduction. The highly tunable structure also leads to tunable optical properties that in useful in next generation optoelectronics such as light emitting diodes (LEDs), field effect transistors (FETs), and ultra-sensitive molecular sensing due to their unique surface-sensitive optical properties. Learning how the structure affects the catalytic and optical properties serves as an important area of research in order tune TMDs to produce more efficient catalysts and serve in various optical applications. This research presentation will cover the following projects: 1) the proton reduction activity of 2D and bulk MoS2 using scanning electrochemical cell microscopy (SECM) and other electroanalytical techniques such as rotating-ring disk electrode and Tafel slope analysis; 2) examining the redox properties of 2D MoS2 using photoluminescence spectroelectrochemistry and scanning electrochemical cell microscopy (SECCM); 3) using aqueous liquid-phase exfoliation technique to produce MoS2 thin films for use in CO2 reduction and the characterization of the reaction products.

Speaker Bio:  Lyndi Strange graduated from Union University in 2016 with a B.S. in chemistry. She did two years of summer research under Dr. Joshua Williams studying guest-host relationships in dye included crystals. She also did a summer REU program at the University of Oregon under Dr. Shannon Boettcher studying the electronic properties of GaAs microstructures grown using close-spaced vapor transport (CSVT), which inspired her to pursue electrochemistry as her focus in graduate school. She is currently a PhD candidate entering into her 5th year at the University of Alabama studying under Dr. Shanlin Pan. Her research focus at UA has focused on transition metal dichalcogenides for use in alternative energy and spectroelectrochemical applications. She has co-authored and authored articles in the ACS Energy Letters, the Journal of Physical Chemistry Letters, and has submitted a review article Journal of the Electrochemical Society. During her tenure at UA, she also participated in a summer internship at Sandia National Laboratories in Albuquerque, NM, which lead to a year-round position. She plans to graduate from the University of Alabama in Summer 2021 and hopefully continue her Sandia employment as a post-doctoral appointee.

 

Meeting March 10th

March 2020 Kentucky Lake Section Meeting
@
Fresh Market Restaurant
2255 E. Wood St.
Paris, TN 38242

Tuesday, March 10th 

Dinner 6:00 pm ($10, $5 for students)
Presentation 7:00 pm
Kid’s Science Center 7:00 pm

Dinner:  Choice of Pork Chops, Grilled Chicken, or Pasta Primavera

Program: An Examination of Drinking Water Disparities in Tennessee: The Origins and Effects of Toxic Heavy Metals

Speaker: Dr. Sujata Guha, Associate Professor of Chemistry, Tennessee State University

Abstract:  Several toxic metals, commonly present in drinking water, are believed to play important roles in the development of cancerous tumors. Although the US Safe Drinking Water Act requires drinking water to meet health standards set by the Environmental Protection Agency, violations occur regularly. In this study, we have investigated the role of the two predominant toxic heavy metals identified in the drinking water sources in Tennessee: copper and lead. We have analyzed the levels of copper and lead, as well as the total water hardness among different counties of Tennessee, with different socioeconomic backgrounds. We determined that the effects of lead and copper in drinking water were random, although counties with typically lower average household incomes typically had higher levels of the metals. The contaminant levels were found to remain below the threshold established by the Environmental Protection Agency and the State of Tennessee. Water from the Cumberland River was harder than water obtained from other rivers in Tennessee. Furthermore, the total hardness of water did not correlate with the average household income of the various counties.

Speaker Bio:  Dr. Guha is an Associate Professor of Chemistry at Tennessee State University in Nashville with expertise in atmospheric chemistry, computational modeling of atmospheric processes, kinetics of atmospheric reactions, spectroscopy, photochemistry, and free radical reaction mechanisms.  She received her B.S. in Chemistry from the University of Dubuque in Iowa, and both her M.S. and Ph.D. from Purdue.  Dr. Guha has served as Chair of the Nashville Section of the ACS and is currently the Graduate Program Director at TSU.