1
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Lin S, Tang Y, Kang W, Bisoyi HK, Guo J, Li Q. Photo-triggered full-color circularly polarized luminescence based on photonic capsules for multilevel information encryption. Nat Commun 2023; 14:3005. [PMID: 37231049 DOI: 10.1038/s41467-023-38801-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 05/16/2023] [Indexed: 05/27/2023] Open
Abstract
Materials with phototunable full-color circularly polarized luminescence (CPL) have a large storage density, high-security level, and enormous prospects in the field of information encryption and decryption. In this work, device-friendly solid films with color tunability are prepared by constructing Förster resonance energy transfer (FRET) platforms with chiral donors and achiral molecular switches in liquid crystal photonic capsules (LCPCs). These LCPCs exhibit photoswitchable CPL from initial blue emission to RGB trichromatic signals under UV irradiation due to the synergistic effect of energy and chirality transfer and show strong time dependence because of the different FRET efficiencies at each time node. Based on these phototunable CPL and time response characteristics, the concept of multilevel data encryption by using LCPC films is demonstrated.
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Affiliation(s)
- Siyang Lin
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yuqi Tang
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China
| | - Wenxin Kang
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Hari Krishna Bisoyi
- Advanced Materials and Liquid Crystal Institute and Materials Science Graduate Program, Kent State University, Kent, OH, 44242, USA
| | - Jinbao Guo
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Quan Li
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
- Advanced Materials and Liquid Crystal Institute and Materials Science Graduate Program, Kent State University, Kent, OH, 44242, USA.
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2
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Huang L, Zhao Y, Huang Z, Tang X, Liang X, Zhang L, He Y, Li H. Molecular modification effects on the electrochromic and photochromic properties of diarylethene with intramolecular isomerization behavior. J Chem Phys 2023; 158:114701. [PMID: 36948809 DOI: 10.1063/5.0141644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Abstract
Diarylethene (DAE) is one of the most widely used functional units for electrochromic or photochromic materials. To better understand the molecular modification effects on the electrochromic and photochromic properties of DAE, two modification strategies, substitution with functional groups or heteroatoms, were investigated theoretically by density functional theory calculations. It is found that red-shifted absorption spectra caused by a decreased highest occupied molecular orbital-lowest unoccupied molecular orbital energy gap and S0 → S1 transition energy during the ring-closing reaction become more significant by adding different functional substituents. In addition, for two isomers, the energy gap and S0 → S1 transition energy decreased by heteroatom substitution of S atoms with O or NH, while they increased by replacing two S atoms with CH2. For intramolecular isomerization, one-electron excitation is the most effective way to trigger the closed-ring (O → C) reaction, while the open-ring (C → O) reaction occurs most readily in the presence of one-electron reduction. Moreover, it is confirmed that substitution with strong electron donating groups (-OCH3/-NH2) or with one O/two CH2 heteroatoms leads to a more favorable closed-ring (O → C) reaction. Functionalized with strong electron-withdrawing groups (-NO2 and -COOH) or one/two NH heteroatom substitutions, the open-ring (C → O) reaction is easier. Our results confirmed that the photochromic and electrochromic properties of DAE can be tuned effectively by molecular modifications, which provides theoretical guidance for the design of new DAE-based photochromic/electrochromic materials.
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Affiliation(s)
- Luyan Huang
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science and Technology, Qingdao, Shandong 266061, China
| | - Yongze Zhao
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science and Technology, Qingdao, Shandong 266061, China
| | - Zehua Huang
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science and Technology, Qingdao, Shandong 266061, China
| | - Xinyuan Tang
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science and Technology, Qingdao, Shandong 266061, China
| | - Xuefeng Liang
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science and Technology, Qingdao, Shandong 266061, China
| | - Lisheng Zhang
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science and Technology, Qingdao, Shandong 266061, China
| | - Yan He
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science and Technology, Qingdao, Shandong 266061, China
| | - Huifang Li
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science and Technology, Qingdao, Shandong 266061, China
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3
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Pratibha, Kapoor A, Rajput JK, Kumar A. Dualistic Fluorescence as Well as Portable Smartphone-Assisted RGB-Relied Sensing Assay for the Ultra-Sensitive Determination of Pendimethalin in Food and Water Samples by AIEE Active Organic Probes. Anal Chem 2022; 94:17685-17691. [PMID: 36503263 DOI: 10.1021/acs.analchem.2c04536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Herein, a peculiar fluorometric as well as smartphone-assisted RGB-relied sensing assay is introduced for determining pendimethalin (PDM) herbicide contents (in parts per trillion level) based on the anthracene-incorporated pyrimidinone/thione probes (S1 to S4). These compounds offered a unique and impressive aggregation-induced emission enhancement (AIEE) behavior by aggregation in H2O-dimethylformamide medium. Furthermore, these AIEE active compounds were found to display superior selectivity and extraordinary sensitivity for PDM detection via fluorescence quenching response. The extent of quenching degree was found to be linearly varied with the PDM concentration ranging from 0 to 20 nM, with a lower limit of detection of 367.8 pM (103.4 ppt) by S3 nanoaggregates. The detailed investigation revealed that such a high sensitivity of the designed sensor toward PDM is attributable to the existence of dual "photoinduced charge transfer and Förster resonance energy transfer process mechanisms". The Stern-Volmer plots, Job's plot, Benesi-Hildebrand plot, and 1H NMR titrations as well indicated the existence of substantial interactions between the sensor and PDM. The conducted selectivity tests provided distinguishable selectivity for PDM detection over various other insecticides/pesticides as well as other structural nitro analogues. Additionally, the presented sensing assay was also applied to quantify the PDM residues in spiked food (vegetables, fruits, and grains) and water samples. In addition, the sensor-coated fluorescent paper test strips were also fabricated for on-site detection of PDM. The applicability of smartphone-relied RGB analysis significantly streamlined the operation process, speeds up the detection procedure, and also offered a novel methodology for real-time analysis of PDM in real samples.
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Affiliation(s)
- Pratibha
- Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar 144011, Punjab, India
| | - Atul Kapoor
- Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar 144011, Punjab, India
| | - Jaspreet Kaur Rajput
- Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar 144011, Punjab, India
| | - Arvind Kumar
- Department of Electronics and Communication Engineering, University Institute of Engineering and Technology, Panjab University, Chandigarh 160014, India
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4
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Bovoloni M, Filo J, Sigmundová I, Magdolen P, Budzák Š, Procházková E, Tommasini M, Cigáň M, Bianco A. Unsymmetrical benzothiazole-based dithienylethene photoswitches. Phys Chem Chem Phys 2022; 24:23758-23768. [PMID: 36155601 DOI: 10.1039/d2cp02325c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we investigate the structure-property relationships in a new series of benzothiazole based unsymmetrical hexafluorocyclopentene dithienylethenes (DTEs) and compare the results with the known facts for symmetric diarylethenes (DAEs). We reveal high photocyclization efficiency resulting from a significant shift of ground state equilibrium to the antiparallel conformation and a barrierless excited state pathway to conical intersection, which remains unperturbed even in polar solvents for most of the prepared DTEs. Furthermore, we uncover that the rate of back thermal cycloreversion correlates clearly more with the central C-C bond-length in the transition state than with the central C-C bond-length in the ground state of the cyclic form. Finally, our detailed vibrational spectral analysis of studied DTEs points out significant changes in Raman and infrared spectra during photoswitching cycles which pave the way for a non-destructive readout of stored information.
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Affiliation(s)
| | - Juraj Filo
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, 842 15 Bratislava, Slovakia.
| | - Ivica Sigmundová
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, 842 15 Bratislava, Slovakia.
| | - Peter Magdolen
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, 842 15 Bratislava, Slovakia.
| | - Šimon Budzák
- Department of Chemistry, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, 974 01 Banská Bystrica, Slovakia
| | - Eliška Procházková
- NMR Spectroscopy Department, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Nám. 2, 160 00 Prague 6, Czech Republic
| | - Matteo Tommasini
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Marek Cigáň
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, 842 15 Bratislava, Slovakia.
| | - Andrea Bianco
- INAF-Osservatorio Astronomico di Brera, Via Bianchi 46, 23807, Merate, Italy.
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5
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Kim D, Aktalay A, Jensen N, Uno K, Bossi ML, Belov VN, Hell SW. Supramolecular Complex of Photochromic Diarylethene and Cucurbit[7]uril: Fluorescent Photoswitching System for Biolabeling and Imaging. J Am Chem Soc 2022; 144:14235-14247. [PMID: 35895999 PMCID: PMC9376957 DOI: 10.1021/jacs.2c05036] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
![]()
Photoswitchable fluorophores—proteins and synthetic
dyes—whose
emission is reversibly switched on and off upon illumination, are
powerful probes for bioimaging, protein tracking, and super-resolution
microscopy. Compared to proteins, synthetic dyes are smaller and brighter,
but their photostability and the number of achievable switching cycles
in aqueous solutions are lower. Inspired by the robust photoswitching
system of natural proteins, we designed a supramolecular system based
on a fluorescent diarylethene (DAE) and cucurbit[7]uril
(CB7) (denoted as DAE@CB7). In this assembly, the photoswitchable DAE molecule is encapsulated by CB7 according to the host–guest
principle, so that DAE is protected from the environment
and its fluorescence brightness and fatigue resistance in pure water
improved. The fluorescence quantum yield (Φfl) increased
from 0.40 to 0.63 upon CB7 complexation. The photoswitching of the DAE@CB7 complex, upon alternating UV and visible light irradiations,
can be repeated 2560 times in aqueous solution before half-bleaching
occurs (comparable to fatigue resistance of the reversibly photoswitchable
proteins), while free DAE can be switched on and off
only 80 times. By incorporation of reactive groups [maleimide and N-hydroxysuccinimidyl (NHS) ester], we prepared bioconjugates
of DAE@CB7 with antibodies and demonstrated both specific
labeling of intracellular proteins in cells and the reversible on/off
switching of the probes in cellular environments under irradiations
with 355 nm/485 nm light. The bright emission and robust photoswitching
of DAE-Male3@CB7 and DAE-NHS@CB7 complexes
(without exclusion of air oxygen and addition of any stabilizing/antifading
reagents) enabled confocal and super-resolution RESOLFT (reversible
saturable optical fluorescence transitions) imaging with apparent
70–90 nm optical resolution.
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Affiliation(s)
- Dojin Kim
- Department of NanoBiophotonics, Max Planck Institute for Multidisciplinary Sciences (MPI-NAT), 37077 Göttingen, Germany
| | - Ayse Aktalay
- Department of Optical Nanoscopy, Max Planck Institute for Medical Research (MPI-MR), 69120 Heidelberg, Germany
| | - Nickels Jensen
- Department of NanoBiophotonics, Max Planck Institute for Multidisciplinary Sciences (MPI-NAT), 37077 Göttingen, Germany
| | - Kakishi Uno
- Department of NanoBiophotonics, Max Planck Institute for Multidisciplinary Sciences (MPI-NAT), 37077 Göttingen, Germany
| | - Mariano L Bossi
- Department of Optical Nanoscopy, Max Planck Institute for Medical Research (MPI-MR), 69120 Heidelberg, Germany
| | - Vladimir N Belov
- Department of NanoBiophotonics, Max Planck Institute for Multidisciplinary Sciences (MPI-NAT), 37077 Göttingen, Germany
| | - Stefan W Hell
- Department of NanoBiophotonics, Max Planck Institute for Multidisciplinary Sciences (MPI-NAT), 37077 Göttingen, Germany
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Song X, Zhao S, Xu Y, Chen X, Wang S, Zhao P, Pu Y, Ragauskas AJ. Preparation, Properties, and Application of Lignocellulosic-Based Fluorescent Carbon Dots. CHEMSUSCHEM 2022; 15:e202102486. [PMID: 35199466 DOI: 10.1002/cssc.202102486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/29/2022] [Indexed: 06/14/2023]
Abstract
Carbon dots (CDs) are a relatively new type of fluorescent carbon material with excellent performance and widespread application. As the most readily available and widely distributed biomass resource, lignocellulosics are a renewable bioresource with great potential. Research into the preparation of CDs with lignocellulose (LC-CDs) has become the focus of numerous researchers. Compared with other carbon sources, lignocellulose is low cost, rich in structural variety, exhibits excellent biocompatibility,[1] and the structures of CDs prepared by lignin, cellulose, and hemicellulose are similar. This Review summarized research progress in the preparation of CDs from lignocellulosics in recent years and reviewed traditional and new preparation methods, physical and chemical properties, optical properties, and applications of LC-CDs, providing guidance for the formation and improvement of LC-CDs. In addition, the challenges of synthesizing LC-CDs were also highlighted, including the interaction of different lignocellulose components on the formation of LC-CDs and the nucleation and growth mechanism of LC-CDs; from this, current trends and opportunities of LC-CDs were examined, and some research methods for future research were put forward.
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Affiliation(s)
- Xueping Song
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, USA
| | - Siyu Zhao
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
| | - Ying Xu
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
| | - Xinrui Chen
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
| | - Peitao Zhao
- School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou, 221116, P. R. China
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, USA
| | - Yunqiao Pu
- Joint Institute for Biological Sciences, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Arthur J Ragauskas
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, USA
- Joint Institute for Biological Sciences, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
- Center for Renewable Carbon, Department of Forestry, Wildlife and Fisheries, University of Tennessee, Knoxville, TN, 37996, USA
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7
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Cheng HB, Zhang S, Bai E, Cao X, Wang J, Qi J, Liu J, Zhao J, Zhang L, Yoon J. Future-Oriented Advanced Diarylethene Photoswitches: From Molecular Design to Spontaneous Assembly Systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108289. [PMID: 34866257 DOI: 10.1002/adma.202108289] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/20/2021] [Indexed: 06/13/2023]
Abstract
Diarylethene (DAE) photoswitch is a new and promising family of photochromic molecules and has shown superior performance as a smart trigger in stimulus-responsive materials. During the past few decades, the DAE family has achieved a leap from simple molecules to functional molecules and developed toward validity as a universal switching building block. In recent years, the introduction of DAE into an assembly system has been an attractive strategy that enables the photochromic behavior of the building blocks to be manifested at the level of the entire system, beyond the DAE unit itself. This assembly-based strategy will bring many unexpected results that promote the design and manufacture of a new generation of advanced materials. Here, recent advances in the design and fabrication of diarylethene as a trigger in materials science, chemistry, and biomedicine are reviewed.
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Affiliation(s)
- Hong-Bo Cheng
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road, Beijing, 100029, P. R. China
| | - Shuchun Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road, Beijing, 100029, P. R. China
| | - Enying Bai
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road, Beijing, 100029, P. R. China
| | - Xiaoqiao Cao
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road, Beijing, 100029, P. R. China
| | - Jiaqi Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road, Beijing, 100029, P. R. China
| | - Ji Qi
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road, Beijing, 100029, P. R. China
| | - Jun Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road, Beijing, 100029, P. R. China
| | - Jing Zhao
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road, Beijing, 100029, P. R. China
| | - Liqun Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road, Beijing, 100029, P. R. China
| | - Juyoung Yoon
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea
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Nishimura R, Fujisawa E, Ban I, Iwai R, Takasu S, Morimoto M, Irie M. Turn-on mode fluorescent diarylethene having neopentyl substituents that undergoes all-visible-light switching. Chem Commun (Camb) 2022; 58:4715-4718. [DOI: 10.1039/d2cc00554a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper presents a strategy for improving all-visible-light switching response of turn-on mode fluorescent diarylethene derivatives. Introduction of neopentyl or isobutyl substituents at the reactive carbons (2- and 2’-positions) of...
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9
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Sun D, Wu Y, Han X, Liu S. Achieving Enhanced Photochromic Properties of Diarylethene through Host-Guest Interaction in Aqueous Solution. Chemistry 2021; 27:16153-16160. [PMID: 34533250 DOI: 10.1002/chem.202102731] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Indexed: 11/09/2022]
Abstract
Diarylethene (DTE) has been widely used in fluorescence probes, molecular logic gates, optical data-storage devices owing to the excellent photochromic property, while constructing high-performance photochromic DTE in aqueous media remains a big challenge. Herein we present several host-guest systems formed between cucurbit[n]uril (CB[n], n=7, 8, 10) and two water-soluble DTE derivatives 1 and 2. It was found that host-guest interactions not only affect the photophysical properties of photochromic guests, but also make great differences on the photoreaction process. Different host-guest binding behaviors also lead to different effects on the photochromic properties of guests. In the presence of CB[n], both 1 and 2 showed enhanced emission and higher fluorescence quenching ratio at photostationary state. Besides, CB[10]⋅1 exhibited faster response rate in cyclization reaction and better photofatigue resistance than free 1 in aqueous solution, while the supramolecular assembly of (CB[8])n ⋅(2)n showed slower response rate in both directions of the reversible photoreaction. Besides, the photofatigue resistance of 2 can be greatly improved through binding with CB[7]. Our results suggest that host-guest interactions could be an efficient way to improve photochromic properties of DTE in aqueous solution.
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Affiliation(s)
- Dongdong Sun
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Yong Wu
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Xie Han
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China.,Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Simin Liu
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China.,Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
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10
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Shida JF, Spieglan E, Adams BW, Angelico E, Domurat-Sousa K, Elagin A, Frisch HJ, La Riviere P, Squires AH. Low-Dose High-Resolution TOF-PET Using Ionization-activated Multi-State Low-Z Detector Media. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT 2021; 1017:165801. [PMID: 34690392 PMCID: PMC8530277 DOI: 10.1016/j.nima.2021.165801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We propose PET scanners using low atomic number media that undergo a persistent local change of state along the paths of the Compton recoil electrons. Measurement of the individual scattering locations and angles, deposited energies, and recoil electron directions allows using the kinematical constraints of the 2-body Compton scattering process to perform a statistical time-ordering of the scatterings, with a high probability of precisely identifying where the gamma first interacted in the detector. In these cases the Line-of-Response is measured with high resolution, determined by the underlying physics processes and not the detector segmentation. There are multiple such media that act through different mechanisms. As an example in which the change of state is quantum-mechanical through a change in molecular configuration, rather than thermodynamic, as in a bubble chamber, we present simulations of a two-state photoswitchable organic dye, a 'Switchillator', that is activated to a fluorescent-capable state by the ionization of the recoil electrons. The activated state is persistent, and can be optically excited multiple times to image individual activated molecules. Energy resolution is provided by counting the activated molecules. Location along the LOR is implemented by large-area time-of-flight MCP-PMT photodetectors with single photon time resolution in the tens of ps and sub-mm spatial resolution. Simulations indicate a large reduction of dose.
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Affiliation(s)
- J F Shida
- Enrico Fermi Institute, The University of Chicago, 5640 S Ellis Ave, Chicago, IL 60637
| | - E Spieglan
- Enrico Fermi Institute, The University of Chicago, 5640 S Ellis Ave, Chicago, IL 60637
| | - B W Adams
- Quantum Optics Applied Research, Naperville, IL 60564
| | - E Angelico
- Enrico Fermi Institute, The University of Chicago, 5640 S Ellis Ave, Chicago, IL 60637
| | - K Domurat-Sousa
- Enrico Fermi Institute, The University of Chicago, 5640 S Ellis Ave, Chicago, IL 60637
| | - A Elagin
- Enrico Fermi Institute, The University of Chicago, 5640 S Ellis Ave, Chicago, IL 60637
| | - H J Frisch
- Enrico Fermi Institute, The University of Chicago, 5640 S Ellis Ave, Chicago, IL 60637
| | - P La Riviere
- Department of Radiology, The University of Chicago, Billings Hospital, P220, 5841 South Maryland Avenue, MC2026, Chicago, IL 60637
| | - A H Squires
- Pritzker School of Molecular Engineering, The University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637
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11
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Liu X, Liu H, Tang X, Liu G, Pu S. A highly selective colorimetric and fluorescent probe for Cu2+ based diarylethene with a diaminomaleonitrile unit. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Qiang Z, Wang M. 100th Anniversary of Macromolecular Science Viewpoint: Enabling Advances in Fluorescence Microscopy Techniques. ACS Macro Lett 2020; 9:1342-1356. [PMID: 35638626 DOI: 10.1021/acsmacrolett.0c00506] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the past few decades there has been a revolution in the field of optical microscopy with emerging capabilities such as super-resolution and single-molecule fluorescence techniques. Combined with the classical advantages of fluorescence imaging, such as chemical labeling specificity, and noninvasive sample preparation and imaging, these methods have enabled significant advances in our polymer community. This Viewpoint discusses several of these capabilities and how they can uniquely offer information where other characterization techniques are limited. Several examples are highlighted that demonstrate the ability of fluorescence microscopy to understand key questions in polymer science such as single-molecule diffusion and orientation, 3D nanostructural morphology, and interfacial and multicomponent dynamics. Finally, we briefly discuss opportunities for further advances in techniques that may allow them to make an even greater contribution in polymer science.
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Affiliation(s)
- Zhe Qiang
- School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Muzhou Wang
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
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