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Title: Computational Chemistry-Guided Design of Selective Chemoresponsive Liquid Crystals Using Pyridine and Pyrimidine Functional Groups

Journal Article · · Advanced Functional Materials

Abstract Computational chemistry‐guided designs of chemoresponsive liquid crystals (LCs) with pyridine or pyrimidine groups that bind to metal‐cation‐functionalized surfaces to provide improved selective responses to targeted vapor species (dimethylmethylphosphonate (DMMP)) over nontargeted species (water) are reported. The LC designs against experiments are tested by synthesizing 4‐(4‐pentyl‐phenyl)‐pyridine and 5‐(4‐pentyl‐phenyl)‐pyrimidine and quantifying LC responses to DMMP and water. Consistent with the computations, pyridine‐containing LCs bind to metal‐cation‐functionalized surfaces too strongly to permit a response to either DMMP or water whereas pyrimidine‐containing LCs undergo a surface‐driven orientational transition in response to DMMP without interference from water. The computation predictions are not strongly dependent on assumptions regarding the degree of coordination of the metal ions but are limited in their ability to predict LC responses when using cations with mostly empty d orbitals. Overall, this work identifies a promising new class of chemoresponsive LCs based on pyrimidine that exhibits enhanced tolerance to water, a result that is important because water is a ubiquitous and particularly challenging chemical interferent in chemical sensing strategies based on LCs. The work also provides further evidence of the transformative utility of computational chemistry methods to design LC materials that exhibit selective orientational responses in specific chemical environments.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231; AC02-06CH11357; DE‐AC02‐06CH11357; DE‐AC02‐05CH11231
OSTI ID:
1543457
Alternate ID(s):
OSTI ID: 1417497
Journal Information:
Advanced Functional Materials, Vol. 28, Issue 13; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

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Cited By (12)

Redox-Triggered Orientational Responses of Liquid Crystals to Chlorine Gas journal July 2018
Redox-Triggered Orientational Responses of Liquid Crystals to Chlorine Gas journal July 2018
Molecular simulations of analyte partitioning and diffusion in liquid crystal sensors journal January 2020
Synthesis and properties of hydroxy tail-terminated cyanobiphenyl liquid crystals journal July 2018
Experimental and theoretical approaches of molecular geometry and mesophase behaviour relationship of laterally substituted azopyridines journal March 2019
New calamitic thermotropic liquid crystals of 2-hydroxypyridine ester mesogenic core: mesophase behaviour and DFT calculations journal June 2019
New room temperature nematogens by cyano tail termination of alkoxy and alkylcyanobiphenyls and their anchoring behavior on metal salt-decorated surface journal September 2019
Synthesis and properties of hydroxy tail-terminated cyanobiphenyl liquid crystals text January 2018
New room temperature nematogens by cyano tail termination of alkoxy and alkylcyanobiphenyls and their anchoring behavior on metal salt-decorated surface text January 2019
Synthesis and properties of hydroxy tail-terminated cyanobiphenyl liquid crystals text January 2018
Experimental and theoretical approaches of molecular geometry and mesophase behaviour relationship of laterally substituted azopyridines text January 2019
New room temperature nematogens by cyano tail termination of alkoxy and alkylcyanobiphenyls and their anchoring behavior on metal salt-decorated surface text January 2019

Figures / Tables (9)