Article
Chemistry, Analytical
Mingce Tian, Kai Zhang, Yanjun Zhang, He Zhou, Zhiqin Yuan, Chao Lu
Summary: Researchers developed a method to red shift the emission of monoaromatic molecules by introducing intramolecular hydrogen bonding units, which allows for switching between UV, blue, and green emissions. This approach offers a promising way for ratiometric in vitro and endogenous alkaline phosphatase sensing.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Physical
Min Tao, Yang Li, Quan Huang, Hongmei Zhao, Jingbo Lan, Yan Wan, Zhuoran Kuang, Andong Xia
Summary: This study demonstrates the feasibility of continuously modulating ESIPT dynamics in HPO derivatives by investigating electron population variations on proton donor and acceptor. An index Δpdif was proposed to evaluate the overall promotion effect on proton transfer, showing high reliability in interpreting the ESIPT tendency. This method has great potential in ESIPT molecular design with chemical substitution of electron-donating/withdrawing moieties.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Biochemistry & Molecular Biology
Tsai I-Ting, M. Merced Montero-Campillo, Ibon Alkorta, Jose Elguero, Manuel Yanez
Summary: Intramolecular interactions, particularly beryllium bonds in ortho-substituted benzene derivatives, play a crucial role in stabilizing conformers with newly formed five or six-membered heterocycles. The strength of the beryllium bond is quantified using Natural Bond Orbital approach, showing significant interaction energies between the donor and acceptor. Energy is mostly spent on deforming donor-acceptor pairs to form new rings in these systems.
Article
Chemistry, Physical
Masashi Mamada, Hiroshi Katagiri, Chihaya Adachi
Summary: The effect of hydrogen bonding on TADF properties and photostability was evaluated using a clathrate crystal. The hydrogen bonding improved TADF properties but did not significantly affect photostability.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Engineering, Environmental
Chengcheng Wang, Jiashuang Li, Wenhua Lin, Jingwen Wang, Yuhua Chen, Bingzhen Li, Liping Zhang, Shaohai Fu
Summary: In this study, we report the development of a bistable electrochromic system based on R-amide-fluorane dyes, which exhibit quick switching and long steady-state duration. The system shows excellent performance in terms of bistability, fast switching, bright color, dual output, high discoloration contrast, and reversibility. The findings provide a new viable path and potential applications in energy saving materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Xinzhu Sun, Danman Guo, Yifeng Cao, Faxu Lin, Huahua Huang, Zhiyong Yang, Yongming Chen, Zhenguo Chi
Summary: The study demonstrated that doping pyrene derivatives into thermoplastic polyurethane can influence the fluorescence properties of composite films, with PYM showing a stronger tendency to aggregate in PU matrixes. Stretching PU25/PYM and PU50/PYM films resulted in an enhancement of emission intensity, which is a remarkable finding in the field of mechanoresponsive materials.
Article
Multidisciplinary Sciences
Rafal Orlowski, John A. Clark, James B. Derr, Eli M. Espinoza, Maximilian F. Mayther, Olga Staszewska-Krajewska, Jay R. Winkler, Hanna Jedrzejewska, Agnieszka Szumna, Harry B. Gray, Valentine Vullev, Daniel T. Gryko
Summary: This study elucidates the factors controlling charge transfer rates in relatively flexible conjugates and identifies a scorpion-shaped molecular architecture that promotes high-speed electron transfer and hole transfer. These findings are crucial for guiding the construction of effective donor-acceptor assemblies and understanding energy flows in biological systems.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Organic
Dominik Goebel, Pascal Rusch, Daniel Duvinage, Tim Stauch, Nadja-C Bigall, Boris J. Nachtsheim
Summary: The synthesis and emission behavior of minimalistic 2-(oxazolinyl)-phenols and their derivatives were investigated, revealing that the position and nature of substituents can affect emission efficiency and characteristics. Single-crystal analysis showed unique packing motifs and an isolation of ESIPT-based fluorophores in the keto form.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Qiaozhuo Wu, Shubin Yang, Qingzhong Li
Summary: This passage describes the chemical reaction between malondialdehyde and triel bonds, and analyzes the influence between different atoms. The triel bond formed by the hydroxyl oxygen enhances the intramolecular hydrogen bond and promotes proton transfer, while the triel bond formed by the carbonyl oxygen weakens the hydrogen bond and inhibits proton transfer.
Review
Chemistry, Applied
Mian Muhammad, Sikandar Khan, Syeda Aaliya Shehzadi, Zarif Gul, Hamed M. Al-Saidi, Abdul Waheed Kamran, Fahad A. Alhumaydhi
Summary: Thiourea and its derivatives are widely used as chemosensors for the detection of metal cations. This article provides an overview of thiourea-based chemosensors and discusses their structural parameters, coordination mechanisms, and sensing performances.
Article
Chemistry, Multidisciplinary
Catia I. C. Esteves, Luis F. B. Fontes, Joao Rocha, Artur M. S. Silva, Samuel Guieu
Summary: This paper investigates the influence of ESIPT groups on emission spectra and their sensitivity to pH variations. The assignment of each emission band was successfully made by using DFT and td-DFT calculations. The study emphasizes the versatility of triphenylpyridines and the synthesis method.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Xin Xin, Yu Zhao, Wei Shi, Guijie Zhao, Yongqing Li
Summary: This paper explores the excited-state intramolecular proton transfer (ESIPT) and charge transfer (ICT) behaviors of methyl benzoate derivatives using density functional theory and time-dependent density functional theory methods. The study reveals the intrinsic relationship between ESIPT and ICT and confirms the enhancement of excited-state intramolecular hydrogen bonds (IHBs) through bond parameters, infrared spectra, and topological analyses. The research provides insights into the charge distribution changes upon photoexcitation and the impact of different substituents on ESIPT reactions.
JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Biochemistry & Molecular Biology
Zhengjun Fang, Xinhua Zhang, Feng Wu, Baoyu Huang, Chaktong Au, Bing Yi
Summary: 2,4-Dihydroxybenzophenone is widely used as a UV absorber in the benzophenone group. The UV absorption ability is affected by the substituents, but the effect on the formation and nature of intramolecular hydrogen bonds has not been well studied. This work experimentally and theoretically verifies the effect of substituent type and substitution position on the absorption intensity of 2,4-dihydroxybenzophenone molecules. The study provides theoretical guidance for the design of benzophenone-based UV absorbers.
Article
Spectroscopy
Songsong Liu, Ming Qin, Qi Lu, Lili Lin, Chuan-Kui Wang, Jianzhong Fan, Yuzhi Song
Summary: The study investigates the excited state behavior of chemosensor 1 and reveals its sensing mechanism for Cu2+ using density functional theory. It is found that the hydrogen bond strength is enhanced in the first singlet excited state, enabling an ultra-fast excited state intramolecular proton transfer process. The theoretical analysis confirms the inhibition of the ESIPT behavior, leading to fluorescence quenching and demonstrating the high selectivity of chemosensor 1 to Cu2+.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Applied
Akira Nose, Touko Murata, Yoshihiro Hamakawa, Hiroshi Shoji, Daisuke Kozaki, Masashi Hojo
Summary: Quantitative analyses and sensory tests were carried out on vodka samples to investigate the stimulative taste of ethanol. The study found that magnesium salt could reduce the stimulative taste of ethanol in vodka by strengthening the hydrogen-bonding structure of water-ethanol. This change in hydrogen-bonding structure could potentially lead to a reduction in the stimulative taste of ethanol in vodka.
Article
Chemistry, Multidisciplinary
Lisa T. Alty, Marcia B. France, Isaac G. Alty, Christine A. Saber, Donna M. Smith
JOURNAL OF CHEMICAL EDUCATION
(2016)
Article
Chemistry, Multidisciplinary
Emma Q. Walhout, Hongmin Yu, Corey Thrasher, Jacob M. Shusterman, Rachel E. O'Brien
ACS EARTH AND SPACE CHEMISTRY
(2019)
Article
Engineering, Environmental
Emma Q. Walhout, Shelby E. Dorn, Jonathan Martens, Giel Berden, Jos Oomens, Paul H. -Y. Cheong, Jesse H. Kroll, Rachel E. O'Brien
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Surgery
Erin M. Scott, Parisa N. Fallah, David N. Blitzer, Rachel E. NeMoyer, Ziad Sifri, Global Surgery, Joseph S. Hanna, Gregory L. Peck
JOURNAL OF SURGICAL RESEARCH
(2019)
Article
Engineering, Environmental
Tanner Braman, Lydia Dolvin, Corey Thrasher, Hongmin Yu, Emma Walhout, Rachel E. O'Brien
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2020)
Article
Surgery
Isaac G. Alty, Edward Christopher Dee, James C. Cusack, Lawrence S. Blaszkowsky, Robert N. Goldstone, Todd D. Francone, Jennifer Y. Wo, Motaz Qadan
Summary: Factors associated with refusal of surgery among colon cancer patients include age, race, income, and insurance status. Disparate rates of surgery refusal by sociodemographic factors may impact patients' overall survival.
AMERICAN JOURNAL OF SURGERY
(2021)
Editorial Material
Education, Scientific Disciplines
Edward Christopher Dee, Isaac G. Alty, James P. Agolia, Carlos Torres-Quinones, Trudy van Houten, Dana A. Stearns, Craig W. Lillehei, Robert C. Shamberger
Summary: A surgical anatomy class aimed to help medical students explore key anatomical relationships through realistic surgical procedures, with the goal of preparing students for residency training and encouraging further research in this pedagogical approach.
ANATOMICAL SCIENCES EDUCATION
(2021)
Article
Oncology
Cameron Schluter, Maia Fefer, Grace Lee, Isaac G. Alty, Edward Christopher Dee
Summary: Access to high-quality online health information is of particular importance for cancer patients undergoing treatment who may be at higher risk of COVID-19. This study assessed the readability and quality of online health information for various cancer types and treatment modalities. The findings highlight the need for efforts to make high-quality online health information available at the appropriate reading level for cancer patients.
JOURNAL OF CANCER EDUCATION
(2023)
Article
Chemistry, Analytical
Rachel E. O'Brien, Ying Li, Kristian J. Kiland, Erin F. Katz, Victor W. Or, Emily Legaard, Emma Q. Walhout, Corey Thrasher, Vicki H. Grassian, Peter F. DeCarlo, Allan K. Bertram, Manabu Shiraiwa
Summary: Organic films on indoor surfaces play a crucial role in indoor chemistry, serving as a medium for reactions and partitioning of semi-volatile organic compounds. The chemical composition of these films remains poorly characterized, with studies showing similarities to cooking organic aerosols but with larger and more oxidized molecules. Viscosity measurements of the film material suggest low viscosity, although inclusion of unsaturation can explain discrepancies. Further research is needed to better understand viscosity measurements and parameterizations for modeled viscosity of indoor organic films.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2021)
Article
Chemistry, Physical
Isaac G. Alty, Christopher J. Abelt
JOURNAL OF PHYSICAL CHEMISTRY A
(2017)