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Rondelli M, Pasán J, Fernández I, Martín T. Predisposition in Dynamic Covalent Chemistry: The Role of Non-Covalent Interactions in the Assembly of Tetrahedral Boronate Cages. Chemistry 2024; 30:e202400896. [PMID: 38507133 DOI: 10.1002/chem.202400896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/20/2024] [Accepted: 03/20/2024] [Indexed: 03/22/2024]
Abstract
Directional bonding strategies guide the design of complex molecular architectures, yet challenges arise due to emergent behavior. Rigid structures face geometric constraints and sensitivity to mismatches, hindering the efficient assembly of molecular organic cages (MOCs). Harnessing intramolecular non-covalent interactions offers a promising solution, broadening geometrical possibilities and enhancing adaptability to boost assembly yields. However, identifying these interactions remains challenging, with their full potential sometimes latent until final assembly. This study explores these challenges by synthesizing boronic acid tripods with varied oxygen positions at the tripodal feet and investigating their role in assembling tetrahedral boronate MOCs. Our results reveal substantial differences in the assembly efficiency among tripods. While the building blocks with oxygen in the benzylic position relative to the central aromatic ring form the MOCs in high yields, those with the oxygen atom directly bound to the central aromatic ring, only yield traces. Through X-ray crystallography and DFT analyses, we elucidate how intramolecular interactions profoundly influence the geometry of the building blocks and cages in a relay-like fashion, highlighting the importance of considering intramolecular interactions in the rational design of (supra)molecular architectures.
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Affiliation(s)
- Manuel Rondelli
- Molecular Science Department, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Cientícas (IPNA-CSIC) Avda. Astrofísico Francisco Sánchez 3, 38206, La Laguna, Tenerife, Spain
| | - Jorge Pasán
- Departamento de Química, Facultad de Ciencias, Laboratorio de Materiales para Análisis Químico (MAT4LL) Universidad de La Laguna, 38200, Tenerife, Spain
| | - Israel Fernández
- Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias Químicas Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Tomás Martín
- Molecular Science Department, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Cientícas (IPNA-CSIC) Avda. Astrofísico Francisco Sánchez 3, 38206, La Laguna, Tenerife, Spain
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2
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Rondelli M, Delgado-Hernández S, Daranas AH, Martín T. Conformational control enables boroxine-to-boronate cage metamorphosis. Chem Sci 2023; 14:12953-12960. [PMID: 38023528 PMCID: PMC10664459 DOI: 10.1039/d3sc02920d] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 10/05/2023] [Indexed: 12/01/2023] Open
Abstract
The discovery of molecular organic cages (MOCs) is inhibited by the limited organic-chemical space of the building blocks designed to fulfill strict geometric requirements for efficient assembly. Using intramolecular attractive or repulsive non-covalent interactions to control the conformation of flexible systems can effectively augment the variety of building blocks, ultimately facilitating the exploration of new MOCs. In this study, we introduce a set of boronic acid tripods that were designed using rational design principles. Conformational control was induced by extending the tripod's arms by a 2,3-dimethylbenzene unit, leading to the efficient formation of a tetrapodal nanometer-sized boroxine cage. The new building block's versatility was demonstrated by performing cage metamorphosis upon adding an aromatic tetraol. This led to a quantitative boroxine-to-boronate transformation and a topological shift from tetrahedral to trigonal bipyramidal.
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Affiliation(s)
- Manuel Rondelli
- Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas (IPNA-CSIC) Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna Tenerife Spain
- Doctoral and Postgraduate School, University of La Laguna (ULL) 38200 La Laguna Tenerife Spain
| | - Samuel Delgado-Hernández
- Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas (IPNA-CSIC) Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna Tenerife Spain
- Departamento de Química, Unidad Departamental de Química Analítica, Universidad de La Laguna (ULL) 38206 La Laguna Tenerife Spain
| | - Antonio H Daranas
- Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas (IPNA-CSIC) Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna Tenerife Spain
- Instituto Universitario de Bio-Orgánica "Antonio González", ULL Avda. Astrofísico Francisco Sánchez, 2 38206 La Laguna Tenerife Spain
| | - Tomás Martín
- Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas (IPNA-CSIC) Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna Tenerife Spain
- Instituto Universitario de Bio-Orgánica "Antonio González", ULL Avda. Astrofísico Francisco Sánchez, 2 38206 La Laguna Tenerife Spain
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3
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Liao Q, Li Q, Li Z. The Key Role of Molecular Packing in Luminescence Property: From Adjacent Molecules to Molecular Aggregates. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2306617. [PMID: 37739004 DOI: 10.1002/adma.202306617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/11/2023] [Indexed: 09/24/2023]
Abstract
The luminescence materials act as the key components in many functional devices, as well as the detection and imaging systems, which can be permeated in each aspect of modern life, and attract more and more attention for the creative technology and applications. In addition to the diverse properties of organic luminogens, the multiple molecular packing at aggregated states frequently offers new and/or exciting performance. However, there still lacks comprehensive analysis of molecular packing in these organic materials, resulting in an increased gap between molecular design and practical applications. In this review, from the basic knowledge of organic compounds as single molecules, to the discernable property of excimer, charge transfer (CT) complex or self-assembly systems by adjacent molecules, and finally to the opto-electronic performance of molecular aggregates, the relevant factors to molecular packing and practical applications are discussed.
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Affiliation(s)
- Qiuyan Liao
- Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, TaiKang Center for Life and Medical Sciences, Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Qianqian Li
- Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, TaiKang Center for Life and Medical Sciences, Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Zhen Li
- Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, TaiKang Center for Life and Medical Sciences, Department of Chemistry, Wuhan University, Wuhan, 430072, China
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4
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Neitz H, Bessi I, Kachler V, Michel M, Höbartner C. Tailored Tolane-Perfluorotolane Assembly as Supramolecular Base Pair Replacement in DNA. Angew Chem Int Ed Engl 2023; 62:e202214456. [PMID: 36344446 PMCID: PMC10107946 DOI: 10.1002/anie.202214456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Indexed: 11/09/2022]
Abstract
Arene-fluoroarene interactions offer outstanding possibilities for engineering of supramolecular systems, including nucleic acids. Here, we implement the tolane-perfluorotolane interaction as base pair replacement in DNA. Tolane (THH) and perfluorotolane (TFF) moieties were connected to acyclic backbone units, comprising glycol nucleic acid (GNA) or butyl nucleic acid (BuNA) building blocks, that were incorporated via phosphoramidite chemistry at opposite positions in a DNA duplex. Thermodynamic analyses by UV thermal melting revealed a compelling stabilization by THH/TFF heteropairs only when connected to the BuNA backbone, but not with the shorter GNA linker. Detailed NMR studies confirmed the preference of the BuNA backbone for enhanced polar π-stacking. This work defines how orthogonal supramolecular interactions can be tailored by small constitutional changes in the DNA backbone, and it inspires future studies of arene-fluoroarene-programmed assembly of DNA.
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Affiliation(s)
- Hermann Neitz
- Institute of Organic ChemistryUniversity of WürzburgAm Hubland97074WürzburgGermany
| | - Irene Bessi
- Institute of Organic ChemistryUniversity of WürzburgAm Hubland97074WürzburgGermany
| | - Valentin Kachler
- Institute of Organic ChemistryUniversity of WürzburgAm Hubland97074WürzburgGermany
| | - Manuela Michel
- Institute of Organic ChemistryUniversity of WürzburgAm Hubland97074WürzburgGermany
| | - Claudia Höbartner
- Institute of Organic ChemistryUniversity of WürzburgAm Hubland97074WürzburgGermany
- Center for Nanosystems Chemistry (CNC)University of WürzburgTheodor-Boveri-Weg97074WürzburgGermany
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5
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Rodriguez Segura L, Cox KE, Samayoa‐Oviedo HY, Ren T. Further Studies of Co
III
(TIM) Mono‐Alkynyl and Bis‐Alkynyl Complexes. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | - Kenneth E. Cox
- Department of Chemistry Purdue University 560 Oval Drive West Lafayette IN 47906 USA
| | | | - Tong Ren
- Department of Chemistry Purdue University 560 Oval Drive West Lafayette IN 47906 USA
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6
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Room temperature phosphorescence achieved by aromatic/perfluoroaromatic interactions. Sci China Chem 2022. [DOI: 10.1007/s11426-021-1229-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Roy S, Maji TK. Self-assembled organic and hybrid materials derived from oligo-( p-phenyleneethynylenes). Chem Commun (Camb) 2022; 58:4149-4167. [PMID: 35274120 DOI: 10.1039/d2cc00186a] [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
Oligo-(p-Phenyleneethynylenes) (OPEs) have garnered widespread interest over the past three decades due to their excellent opto-electronic properties. However, the chief focus has been on the use of mainly small molecules or polymeric systems for the study of their structural diversity in opto-electronic applications. Recently, researchers have started delving deeper into their utility in material applications. Purely organic materials such as supramolecular polymers, self-assembled nanostructures, nanostructured organogels and single-crystalline materials derived from OPEs have already been developed and researched. Chirality has also been introduced into these systems. Additionally, these have shown physical properties such as polymorphism, liquid crystallinity, melt formation, mechanochromism, etc. All these materials have also shown excellent luminescence properties with high quantum yield and some have even shown energy harvesting properties. There have also been sporadic reports on OPE linker based hybrid systems such as metallogels and metal-organic framework (MOF) structures where structural analysis reveals the origin of tunable emission in these materials. Furthermore, by innovative structural design, unexplored properties of OPEs such as water repellency, bioimaging, drug delivery, photocatalysis, energy transfer, nanomorphology control, photoconductivity, and colour tunability could be achieved. This feature article will, therefore, encompass a detailed discussion on the development of this field as well as the analysis of the properties realized in OPE derived self-assembled supramolecular materials. The main focus will be on the following classes of materials: soft supramolecular materials, crystalline supramolecular π-systems, nanoscale metal-organic frameworks (NMOFs) and bulk metal-organic frameworks (MOFs) and how their application horizon has been expanded by integrating OPEs into their structures.
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Affiliation(s)
- Syamantak Roy
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit, School of Advanced Material (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India.
| | - Tapas Kumar Maji
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit, School of Advanced Material (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India.
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8
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Putta A, Gairhe S, Yao F, Sun H. Stereo-electronic effect of perfluoropropyl group on solid state molecular packing of isomeric dibenzo [a,c]phenazine derivatives. CrystEngComm 2022. [DOI: 10.1039/d2ce00019a] [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
We report here the synthesis, characterization, and crystal structures of three perfluoropropylated dibenzo [a,c]phenazine constitutional isomers where the only differences among them are the position of perfluoropropyl substituents. The crystal...
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9
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Chaudhry S, Wu Y, Cao Z, Li S, Canada JL, Gu X, Risko C, Mei J. Evolution of Chain Dynamics and Oxidation States with Increasing Chain Length for a Donor–Acceptor-Conjugated Oligomer Series. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00963] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Saadia Chaudhry
- Department of Chemistry, Purdue University West Lafayette, Indiana 47907, United States
| | - Yukun Wu
- Department of Chemistry, Purdue University West Lafayette, Indiana 47907, United States
| | - Zhiqiang Cao
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Shi Li
- Department of Chemistry & Center for Applied Energy Research (CAER), University of Kentucky, Lexington, Kentucky 40506, United States
| | - Jodie L. Canada
- Department of Chemistry & Center for Applied Energy Research (CAER), University of Kentucky, Lexington, Kentucky 40506, United States
| | - Xiaodan Gu
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Chad Risko
- Department of Chemistry & Center for Applied Energy Research (CAER), University of Kentucky, Lexington, Kentucky 40506, United States
| | - Jianguo Mei
- Department of Chemistry, Purdue University West Lafayette, Indiana 47907, United States
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10
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Rangel Euzcateguy G, Parajua‐Sejil C, Marchal P, Chapron D, Averlant‐Petit M, Stefan L, Pickaert G, Durand A. Rheological investigation of supramolecular physical gels in water/dimethylsulfoxide mixtures by lysine derivatives. POLYM INT 2021. [DOI: 10.1002/pi.6179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | | | | | - David Chapron
- Université de Lorraine, CentraleSupélec, LMOPS Metz France
| | | | - Loïc Stefan
- Université de Lorraine, CNRS, LCPM Nancy France
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11
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Zhang H, Han J, Jin X, Duan P. Improving the Overall Properties of Circularly Polarized Luminescent Materials Through Arene–Perfluoroarene Interactions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014891] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Haowen Zhang
- College of Chemistry Zhengzhou University No.100 Science Avenue Zhengzhou 450001 P. R. China
| | - Jianlei Han
- CAS Center for Excellence in Nanoscience CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao Beijing 100190 P. R. China
| | - Xue Jin
- CAS Center for Excellence in Nanoscience CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao Beijing 100190 P. R. China
| | - Pengfei Duan
- College of Chemistry Zhengzhou University No.100 Science Avenue Zhengzhou 450001 P. R. China
- CAS Center for Excellence in Nanoscience CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao Beijing 100190 P. R. China
- University of Chinese Academy of Sciences No.19(A) Yuquan Road, Shijingshan District Beijing 100049 P. R. China
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12
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Zhang H, Han J, Jin X, Duan P. Improving the Overall Properties of Circularly Polarized Luminescent Materials Through Arene-Perfluoroarene Interactions. Angew Chem Int Ed Engl 2021; 60:4575-4580. [PMID: 33236479 DOI: 10.1002/anie.202014891] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Indexed: 11/06/2022]
Abstract
A major trade-off in the field of circularly polarized luminescence (CPL) of pure organic materials is that the large luminescence dissymmetry factor (glum ) usually gives rise to the suppression of luminescence efficiency (ΦPL ). Here, a supramolecular self-assembled system, driven by arene-perfluoroarene (AP) interactions of chiral polycyclic aromatic hydrocarbons (PAHs) and octafluoronaphthalene (OFN), is reported to provide a solution to this problem. Two kinds of chiral PAHs based on pyrene and anthracene could co-assemble with OFN in hybrid solvents to form long-range-ordered AP assemblies. The detailed process of AP interaction driving self-assembly was verified by morphological measurements and fluorescence spectra. The AP assemblies exhibited chirality amplification not only in the excited state but also in the ground state. In addition, the AP assemblies showed an enhanced luminescence efficiency compared with the individual chiral PAHs due to the energy-barrier effect of OFN. The present strategy based on AP interactions could be applied to boost the development of highly efficient CPL-active materials.
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Affiliation(s)
- Haowen Zhang
- College of Chemistry, Zhengzhou University, No.100 Science Avenue, Zhengzhou, 450001, P. R. China
| | - Jianlei Han
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China
| | - Xue Jin
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China
| | - Pengfei Duan
- College of Chemistry, Zhengzhou University, No.100 Science Avenue, Zhengzhou, 450001, P. R. China.,CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
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13
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Zhang B, Qu H, Li Z, Zhai Y, Zhou X, Liu L. Zirconocene-mediated selective synthesis of 1,4-bis(alkynyl)benzenes. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820912675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A series of novel 1,4-bis(alkynyl)benzene derivatives were synthesized from trimethylsilyl-substituted alkynes by the mediation of zirconocene with excellent regioselectivity in high yields. The 3,6-bis(trimethylsilyl)-4,5-dialkylphthalic acid dimethyl esters were prepared by cycloaddition of 2,5-bis(trimethylsilyl)zirconacyclopentadienes to dimethyl acetylenedicarboxylate. After iodination with iodine monochloride, 3,6-diiodo-4,5-dialkylphthalic acid dimethyl esters reacted with terminal alkynes to prepare the corresponding 1,4-bis(alkynyl)benzene derivatives by Sonogashira coupling reactions. After removal of trimethylsilyl, 4,5-dibutyl-3,6-bis(ethynyl)phthalic acid dimethyl ester (compound 3) reacted with 4-iodobenzoic acid ethyl ester and 2-iodothiophene, respectively, to obtain the corresponding products 4a and 4c. Compound 3 can be extended to higher oligomers, which reacted with 1-bromo-4-iodobenzene and phenylacetylene in a stepwise manner under Sonogashira conditions to give the phenylene-ethynylene oligomer 5 in an isolated yield of 85%. The structures of the products were confirmed by 1H NMR spectroscopy, 13C NMR spectroscopy, and MS. The optical properties of the 1,4-bis(alkynyl)benzene derivatives were studied by UV-Vis spectroscopy and fluorescence spectra. The results indicated that some can be developed into potential photovoltaic materials.
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Affiliation(s)
- Bo Zhang
- Key Laboratory of Systems Bioengineering, Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
| | - Hongmei Qu
- Key Laboratory of Systems Bioengineering, Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
| | - Zhongxuan Li
- Key Laboratory of Systems Bioengineering, Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
| | - Yuanyuan Zhai
- Key Laboratory of Systems Bioengineering, Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
| | - Xiaolu Zhou
- Key Laboratory of Systems Bioengineering, Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
| | - Liqiang Liu
- Key Laboratory of Systems Bioengineering, Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
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14
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Mullin WJ, Qin H, Mani T, Müller P, Panzer MJ, Thomas SW. Turning on solid-state phosphorescence of platinum acetylides with aromatic stacking. Chem Commun (Camb) 2020; 56:6854-6857. [PMID: 32432580 DOI: 10.1039/d0cc02119a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Neat solids that phosphoresce under ambient conditions are rare due to aggregation-caused quenching. This communication describes a platinum acetylide (PtPE) that phosphoresces as a solid due to programmed aromatic stacking interactions of pendant groups that prevent intermolecular aggregation.
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Affiliation(s)
- William J Mullin
- Department of Chemistry, Tufts University, 62 Talbot Ave, Medford, MA 02155, USA.
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15
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Mahmood A, Irfan A. Effect of fluorination on exciton binding energy and electronic coupling in small molecule acceptors for organic solar cells. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.112797] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Huang Z, Chen X, Wu G, Metrangolo P, Whitaker D, McCune JA, Scherman OA. Host-Enhanced Phenyl-Perfluorophenyl Polar-π Interactions. J Am Chem Soc 2020; 142:7356-7361. [PMID: 32248683 PMCID: PMC7181256 DOI: 10.1021/jacs.0c02275] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Phenyl-perfluorophenyl polar-π interactions have been revisited for the design and fabrication of functional supramolecular systems. The relatively weak associative interactions (ΔG ≈ -1.0 kcal/mol) have limited their use in aqueous self-assembly to date. Herein, we propose a strategy to strengthen phenyl-perfluorophenyl polar-π interactions by encapsulation within a synthetic host, thus increasing the binding affinity to ΔG= -15.5 kcal/mol upon formation of heteroternary complexes through social self-sorting. These heteroternary complexes were used as dynamic, yet strong, cross-linkers in the fabrication of supramolecular gels, which exhibited excellent viscoelasticity, stretchability, self-recovery, self-healing, and energy dissipation. This work unveils a general approach to exploit host-enhanced polar-π interactions in the design of robust aqueous supramolecular systems.
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Affiliation(s)
- Zehuan Huang
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Xiaoyi Chen
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Guanglu Wu
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Pierangelo Metrangolo
- Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Via L. Mancinelli 7, 20131 Milano, Italy
| | - Daniel Whitaker
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Jade A McCune
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Oren A Scherman
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
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17
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Sun Y, Lei Y, Hu W, Wong WY. Epitaxial Growth of Nanorod Meshes from Luminescent Organic Cocrystals via Crystal Transformation. J Am Chem Soc 2020; 142:7265-7269. [DOI: 10.1021/jacs.0c00135] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yanqiu Sun
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University (PolyU), Hung Hom, Hong Kong 999077, P. R. China
- PolyU Shenzhen Research Institute, Shenzhen 518057, P. R. China
| | - Yilong Lei
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Wenping Hu
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Wai-Yeung Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University (PolyU), Hung Hom, Hong Kong 999077, P. R. China
- PolyU Shenzhen Research Institute, Shenzhen 518057, P. R. China
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18
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Schnitte M, Lipinski S, Schiebel E, Mecking S. Pentafluorophenyl Groups as Remote Substituents in Ni(II) Polymerization Catalysis. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00784] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manuel Schnitte
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - Sophia Lipinski
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - Eva Schiebel
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - Stefan Mecking
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
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Moaven S, Andrews MC, Polaske TJ, Karl BM, Unruh DK, Bosch E, Bowling NP, Cozzolino AF. Triple-Pnictogen Bonding as a Tool for Supramolecular Assembly. Inorg Chem 2019; 58:16227-16235. [PMID: 31718176 DOI: 10.1021/acs.inorgchem.9b02761] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Supramolecular assembly utilizing simultaneous formation of three pnictogen bonds around a single antimony vertex was explored via X-ray crystallography, solution NMR, and computational chemistry. An arylethynyl (AE) ligand was designed to complement the three electrophilic regions around the Sb compound. Though solution studies reveal large binding constants for individual pyridyl units with the Sb donor, the rigidity and prearrangement of the AE acceptor proved necessary to achieve simultaneous binding of three acceptors to the Sb-centered pnictogen-bond donor. Calculations and X-ray structures suggest that negative cooperativity upon sequential binding of three acceptors to a Sb center limits the utility of triple-pnictogen bonding pyridyl acceptors. These limitations can be negated, however, when positive cooperativity is designed into a complementary acceptor ligand.
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Affiliation(s)
- Shiva Moaven
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Miranda C Andrews
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Thomas J Polaske
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Brian M Karl
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Daniel K Unruh
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Eric Bosch
- Chemistry Department , Missouri State University , 901 S. National Ave. , Springfield , Missouri 65897 , United States
| | - Nathan P Bowling
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Anthony F Cozzolino
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
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Zafar M, Ramalakshmi R, Pathak K, Ahmad A, Roisnel T, Ghosh S. Five-Membered Ruthenacycles: Ligand-Assisted Alkyne Insertion into 1,3-N,S-Chelated Ruthenium Borate Species. Chemistry 2019; 25:13537-13546. [PMID: 31332858 DOI: 10.1002/chem.201902663] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Indexed: 11/10/2022]
Abstract
Building upon previous work, the chemistry of [(η6 -p-cymene)Ru{P(OMe)2 OR}Cl2 ], (R=H or Me) has been extended with [H2 B(mbz)2 ]- (mbz=2-mercaptobenzothiazolyl) using different Ru precursors and borate ligands. As a result, a series of 1,3-N,S-chelated ruthenium borate complexes, for example, [(κ2 -N,S-L)PR3 Ru{κ3 -H,S,S'-H2 B(L)2 }], (2 a-d and 2 a'-d'; R=Ph, Cy, OMe or OPh and L=C5 H4 NS or C7 H4 NS2 ) and [Ru{κ3 -H,S,S'-H2 B(L)2 }2 ], (3: L=C5 H4 NS, 3': L=C7 H4 NS2 ) were isolated upon treatment of [(η6 -p-cymene)RuCl2 PR3 ], 1 a-d (R=Ph, Cy, OMe or OPh) with [H2 B(mp)2 ]- or [H2 B(mbz)2 ]- ligands (mp=2-mercaptopyridyl). All the Ru borate complexes, 2 a-d and 2 a'-d' are stabilized by phosphine/phosphite and hemilabile N,S-chelating ligands. Treatment of these Ru borate species, 2 a'-c' with various terminal alkynes yielded two different types of five-membered ruthenacycle species, namely [PR3 {C7 H4 S2 -(E)-N-C=CH(R')}Ru{κ3 -H,S,S'-H2 B(L)2 }], (4-4'; R=Ph and R'=CO2 Me or C6 H4 NO2 ; L=C7 H4 NS2 ) and [PR3 {C7 H4 NS-(E)-S-C=CH(R')}Ru{κ3 -H,S,S'-H2 B(L)2 }], (5-5', 6 and 7; R=Ph, Cy or OMe and R'=CO2 Me or C6 H4 NO2 ; L=C7 H4 NS2 ). All these five-membered ruthenacycle species contain an exocyclic C=C moiety, presumably formed by the insertion of a terminal alkyne into the Ru-N and Ru-S bonds. The new species have been characterized spectroscopically and the structures were further confirmed by single-crystal X-ray diffraction analysis. Theoretical studies and chemical-bonding analyses established that charge transfer occurs from phosphorus to ruthenium center following the trend PCy3 <PPh3 <P(OPh)3 <P(OMe)3 .
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Affiliation(s)
- Mohammad Zafar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Rongala Ramalakshmi
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Kriti Pathak
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Asif Ahmad
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Thierry Roisnel
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, 35042, Rennes, France
| | - Sundargopal Ghosh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
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21
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Sharber SA, Mann A, Shih KC, Mullin WJ, Nieh MP, Thomas SW. Directed Polymorphism and Mechanofluorochromism of Conjugated Materials through Weak Non-Covalent Control. JOURNAL OF MATERIALS CHEMISTRY. C 2019; 7:8316-8324. [PMID: 33133604 PMCID: PMC7597496 DOI: 10.1039/c9tc01301f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Understanding and manipulating crystal polymorphism can provide novel strategies for materials discovery in organic optoelectronics. In this paper, a series of seven ester-terminated three-ring phenylene ethynylenes (PEs) exhibit structure-dependent polymorphism wherein alkyl chain length modulates the propensity to form violet or green fluorescent solid phases, as well as tunable thermal and mechanofluorochromic (MFC) transitions. These compounds harness "soft" non-covalent control to achieve polymorphism: the electronic substituent effect of the ester groups weakens the fluoroarene-arene (ArF-ArH) interactions that typically direct crystal packing of this class of compounds, increasing competitiveness of other interactions. Small structural modifications tip this balance and shift the prevalence of violet- or green-emitting polymorphs. Compounds with short alkyl chain lengths show both violet and various green fluorescent polymorphs, while the violet fluorescent form dominates with alkyl lengths longer than butyl. Further, thermally induced green-to-violet fluorescent crystal-to-crystal transitions occur for single crystals of CO2-1 and CO2-3. Finally, the PEs show reversible violet-to-green mechanofluorochromism (MFC), with temperature required for reversion of this MFC decreasing with alkyl chain length. We therefore present this design of directional but weak interactions as a strategy to access polymorphs and tunable stimuli-responsive behavior in solids.
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Affiliation(s)
- Seth A Sharber
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, MA 02155, USA
| | - Arielle Mann
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, MA 02155, USA
| | - Kuo-Chih Shih
- Department of Chemical & Biomolecular Engineering, University of Connecticut, 97 North Eagleville Road, Storrs, CT 06269, USA
| | - William J Mullin
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, MA 02155, USA
| | - Mu-Ping Nieh
- Department of Chemical & Biomolecular Engineering, University of Connecticut, 97 North Eagleville Road, Storrs, CT 06269, USA
| | - Samuel W Thomas
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, MA 02155, USA
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Koga C, Kohri M, Taniguchi T, Kishikawa K. Does Introduction of a Bent Tail Stabilize Biaxiality and Lateral Switching Behavior of Smectic A Liquid Crystal Phases of Rodlike Molecules? J Phys Chem B 2019; 123:4324-4332. [DOI: 10.1021/acs.jpcb.9b00589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Arrata I, Grison CM, Coubrough HM, Prabhakaran P, Little MA, Tomlinson DC, Webb ME, Wilson AJ. Control of conformation in α-helix mimicking aromatic oligoamide foldamers through interactions between adjacent side-chains. Org Biomol Chem 2019; 17:3861-3867. [PMID: 30938392 DOI: 10.1039/c9ob00123a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The design, synthesis and structural characterization of non-natural oligomers that adopt well-defined conformations, so called foldamers, is a key objective in developing biomimetic 3D functional architectures. For the aromatic oligoamide foldamer family, use of interactions between side-chains to control conformation is underexplored. The current manuscript addresses this objective through the design, synthesis and conformational analyses of model dimers derived from 3-O-alkylated para-aminobenzoic acid monomers. The O-alkyl groups on these foldamers are capable of adopting syn- or anti-conformers through rotation around the Ar-CO/NH axes. In the syn-conformation this allows the foldamer to act as a topographical mimic of the α-helix whereby the O-alkyl groups mimic the spatial orientation of the i and i + 4 side-chains from the α-helix. Using molecular modelling and 2D NMR analyses, this work illustrates that covalent links and hydrogen-bonding interactions between side-chains can bias the conformation in favour of the α-helix mimicking syn-conformer, offering insight that may be more widely applied to control secondary structure in foldamers.
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Affiliation(s)
- Irene Arrata
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK.
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24
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Dou JH, Yu ZA, Zhang J, Zheng YQ, Yao ZF, Tu Z, Wang X, Huang S, Liu C, Sun J, Yi Y, Cao X, Gao Y, Wang JY, Pei J. Organic Semiconducting Alloys with Tunable Energy Levels. J Am Chem Soc 2019; 141:6561-6568. [DOI: 10.1021/jacs.8b13471] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jin-Hu Dou
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijng 100871, China
| | - Zhi-Ao Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijng 100871, China
| | - Jun Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijng 100871, China
- Institute of Theoretical and Computational Chemistry, College of Chemistry and Molecular Engineering and Biodynamic Optical Imaging Center, Peking University, Beijing 100871, China
| | - Yu-Qing Zheng
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Ze-Fan Yao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijng 100871, China
| | - Zeyi Tu
- Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xinchang Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Shiliang Huang
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621000, China
| | - Chengwen Liu
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Junliang Sun
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijng 100871, China
| | - Yuanping Yi
- Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaoyu Cao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yiqin Gao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijng 100871, China
- Institute of Theoretical and Computational Chemistry, College of Chemistry and Molecular Engineering and Biodynamic Optical Imaging Center, Peking University, Beijing 100871, China
| | - Jie-Yu Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijng 100871, China
| | - Jian Pei
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijng 100871, China
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25
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Sharber SA, Thomas SW. Small Changes With Big Consequences: Swapping Two Atoms In Side Chains Changes Phenylene-Ethynylene Packing And Fluorescence. Chemistry 2018; 24:16987-16991. [PMID: 30281848 DOI: 10.1002/chem.201804648] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Indexed: 11/06/2022]
Abstract
Engineering the properties of conjugated materials in the solid state is an unsolved, ongoing challenge important to fundamental understanding of how non-covalent interactions dictate packing and key properties, as well as the development of technologies based in organic optoelectronics. The most common design paradigm of such materials divide them into a "main chain" with extended conjugation, the chemical structure of which determines optoelectronic properties, and "side chains" not conjugated to the backbone, which provide solubility when they are long alkyl chains. This paper describes comparisons between phenylene-ethynylene molecules in which slight changes to the structure of "side chains"-swapping hydrogen and fluorine atomic position on an aromatic ring-results in unexpectedly large changes in the solid-state optical properties. In a pair of anisyl-terminated three-ring phenylene-ethynylenes, switching the side chain arenes of benzyl esters from 2,4,6-trifluoro to 2,3,6-trifluoro results in a shift in fluorescence emission spectra of over 100 nm, as well as the opposite direction of force-induced shifting of emission. Through a combination X-ray crystal structures, electronic structure calculations, and comparisons with other derivatives, we describe how the 2,4,6-trifluorinated side chains yield cofacial fluoroarene-arene stacking interactions that twist the PE backbone out of conjugation, while the 2,3,6-trifluoro side chains do not stack, instead yielding more coplanar PE backbones that form intermolecular aggregates. Overall, this work demonstrates how slight modifications to parts of conjugated materials normally considered ancillary to optoelectronic properties can determine their solid-state properties, epitomizing the challenge of rational design but at the same time offering opportunities for materials discovery and improved understanding of non-covalent interactions.
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Affiliation(s)
- Seth A Sharber
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, MA, 02155, USA
| | - Samuel W Thomas
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, MA, 02155, USA
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26
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Zeng F, Tang LL, Chen XM, Ding MH. Synthesis and physical properties of triptycene-based oligo(p-phenyleneethynylene)s. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Haque A, Al-Balushi RA, Al-Busaidi IJ, Khan MS, Raithby PR. Rise of Conjugated Poly-ynes and Poly(Metalla-ynes): From Design Through Synthesis to Structure-Property Relationships and Applications. Chem Rev 2018; 118:8474-8597. [PMID: 30112905 DOI: 10.1021/acs.chemrev.8b00022] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Conjugated poly-ynes and poly(metalla-ynes) constitute an important class of new materials with potential application in various domains of science. The key factors responsible for the diverse usage of these materials is their intriguing and tunable chemical and photophysical properties. This review highlights fascinating advances made in the field of conjugated organic poly-ynes and poly(metalla-ynes) incorporating group 4-11 metals. This includes several important aspects of conjugated poly-ynes viz. synthetic protocols, bonding, electronic structure, nature of luminescence, structure-property relationships, diverse applications, and concluding remarks. Furthermore, we delineated the future directions and challenges in this particular area of research.
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Affiliation(s)
- Ashanul Haque
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Rayya A Al-Balushi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Idris Juma Al-Busaidi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Muhammad S Khan
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Paul R Raithby
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , U.K
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Roy S, Suresh VM, Hazra A, Bandyopadhyay A, Laha S, Pati SK, Maji TK. Solvent-Modulated Emission Properties in a Superhydrophobic Oligo(p-phenyleneethynylene)-Based 3D Porous Supramolecular Framework. Inorg Chem 2018; 57:8693-8696. [DOI: 10.1021/acs.inorgchem.8b00584] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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Sharber SA, Shih KC, Mann A, Frausto F, Haas TE, Nieh MP, Thomas SW. Reversible mechanofluorochromism of aniline-terminated phenylene ethynylenes. Chem Sci 2018; 9:5415-5426. [PMID: 30009013 PMCID: PMC6009520 DOI: 10.1039/c8sc00980e] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 05/23/2018] [Indexed: 01/24/2023] Open
Abstract
Seven three-ring phenylene-ethynylene (PE) structural analogs, differing only in the lengths of alkyl chains on terminal aniline substituents, show 50-62 nm bathochromic shifts in emission maxima in response to mechanical force (mechanofluorochromism, MC). These shifts are fully reversible with heat or solvent fuming. Shearing of these solids yields a transition from green-emitting crystalline phases to orange-emitting amorphous phases as established by differential scanning calorimetry and X-ray diffraction. Molecules with shorter alkyl chain lengths required higher temperatures to recover the hypsochromically shifted crystalline phases after grinding, while the recovery with chain lengths longer than butyl occurred at room temperature. In addition to this structure-dependent thermochromism, these compounds retain their MC properties in polymer hosts to various extents. The crystalline phases of these materials have PE chromophores that are twisted due to non-covalent perfluoroarene-arene (ArF-ArH) interactions involving perfluorophenyl pendants and the terminal rings of the PE chromophore, resulting in interrupted conjugation and an absence of chromophore aggregation. The MC behavior of an analog without the perfluoroarene rings is severely attenuated. This work demonstrates the general utility of twisted PEs as stimuli-responsive moieties and reveals clear structure-property relationships regarding the effects of alkyl chain length on these materials.
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Affiliation(s)
- Seth A Sharber
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , MA 02155 , USA .
| | - Kuo-Chih Shih
- Department of Chemical & Biomolecular Engineering , University of Connecticut , 97 North Eagleville Road, Storrs , CT 06269 , USA
| | - Arielle Mann
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , MA 02155 , USA .
| | - Fanny Frausto
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , MA 02155 , USA .
| | - Terry E Haas
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , MA 02155 , USA .
| | - Mu-Ping Nieh
- Department of Chemical & Biomolecular Engineering , University of Connecticut , 97 North Eagleville Road, Storrs , CT 06269 , USA
| | - Samuel W Thomas
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , MA 02155 , USA .
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30
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Mikherdov AS, Kinzhalov MA, Novikov AS, Boyarskiy VP, Boyarskaya IA, Avdontceva MS, Kukushkin VY. Ligation-Enhanced π-Hole···π Interactions Involving Isocyanides: Effect of π-Hole···π Noncovalent Bonding on Conformational Stabilization of Acyclic Diaminocarbene Ligands. Inorg Chem 2018; 57:6722-6733. [PMID: 29792332 DOI: 10.1021/acs.inorgchem.8b01027] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The reaction of cis-[PdCl2(CNXyl)2] (Xyl = 2,6-Me2C6H3) with the aminoazoles [1 H-imidazol-2-amine (1), 4 H-1,2,4-triazol-3-amine (2), 1 H-tetrazol-5-amine (3), 1 H-benzimidazol-2-amine (4), 1-alkyl-1 H-benzimidazol-2-amines, where alkyl = Me (5), Et (6)] in a 2:1 ratio in the presence of a base in CHCl3 at RT proceeds regioselectively and leads to the binuclear diaminocarbene complexes [(ClPdCNXyl)2{μ-C(N-azolyl)N(Xyl)C═NXyl}] (7-12; 73-91%). Compounds 7-12 were characterized by C, H, N elemental analyses, high-resolution ESI+-MS, Fourier transform infrared spectroscopy, 1D (1H, 13C) and 2D (1H,1H-COSY, 1H,1H-NOESY, 1H,13C-HSQC, 1H,13C-HMBC) NMR spectroscopies, and X-ray diffraction (XRDn). Inspection of the XRDn data and results of the Hirshfeld surface analysis suggest the presence in all six structures of intramolecular π-holeisocyanide···πarene interactions between the electrophilic C atom of the isocyanide moiety and the neighboring arene ring. These interactions also result in distortion of the Pd-C≡N-Xyl fragment from the linearity. Results of density functional theory calculations [M06/MWB28 (Pd) and 6-31G* (other atoms) level of theory] for model structures of 7-9 followed by the topological analysis of the electron density distribution within the framework of Bader's theory (QTAIM method) reveal the presence of these weak interactions also in a CHCl3 solution, and their calculated strength is 1.9-2.2 kcal/mol. The natural bond orbital analysis of 7-9 revealed that π(C-C)Xyl → π*(C-N)isocyanide charge transfer (CT) takes place along with the intramolecular π-holeisocyanide···πarene interactions. The observed π(C-C)Xyl → π*(C-N)isocyanide CT is due to ligation of the isocyanide to the metal center, whereas in the cases of the uncomplexed p-CNC6H4NC and CNXyl species, the effects of CT are negligible. Available CCDC data were processed from the perspective of isocyanide-involving π-hole···π interactions, disclosed the role of metal coordination in the π-hole donor ability of isocyanides, and verified the π-holeisocyanide···πarene interaction effect on the stabilization of the in-conformation in metal-bound acyclic diaminocarbenes.
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Affiliation(s)
- Alexander S Mikherdov
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Mikhail A Kinzhalov
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Alexander S Novikov
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Vadim P Boyarskiy
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Irina A Boyarskaya
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Margarita S Avdontceva
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Vadim Yu Kukushkin
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
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31
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Kehoe ZR, Woller GR, Speetzen ED, Lawrence JB, Bosch E, Bowling NP. Effects of Halogen and Hydrogen Bonding on the Electronics of a Conjugated Rotor. J Org Chem 2018; 83:6142-6150. [DOI: 10.1021/acs.joc.8b01064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zachary R. Kehoe
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - Garrett R. Woller
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - Erin D. Speetzen
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - James B. Lawrence
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - Eric Bosch
- Department of Chemistry, Missouri State University, 901 South National Avenue, Springfield, Missouri 65897, United States
| | - Nathan P. Bowling
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
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32
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Yao W, Li R, Jiang H, Han D. An Additive-Free, Base-Catalyzed Protodesilylation of Organosilanes. J Org Chem 2018; 83:2250-2255. [PMID: 29370696 DOI: 10.1021/acs.joc.7b03139] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We report an additive-free, base-catalyzed C-, N-, O-, and S-Si bond cleavage of various organosilanes in mild conditions. The novel catalyst system exhibits high efficiency and good functional group compatibility, providing the corresponding products in good to excellent yields with low catalyst loadings. Overall, this transition-metal-free process may offer a convenient and general alternative to current employing excess bases, strong acids, or metal-catalyzed systems for the protodesilylation of organosilanes.
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Affiliation(s)
- Wubing Yao
- Department of Chemistry, Taizhou University , Jiaojiang 318000, China
| | - Rongrong Li
- Department of Chemistry, Taizhou University , Jiaojiang 318000, China
| | - Huajiang Jiang
- Department of Chemistry, Taizhou University , Jiaojiang 318000, China
| | - Deman Han
- Department of Chemistry, Taizhou University , Jiaojiang 318000, China
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Wang JF, Yao Y, Ning Y, Meng YS, Hou CL, Zhang J, Zhang JL. The design of rigid cyclic tripyrrins: the importance of intermolecular interactions on aggregation and luminescence. Org Chem Front 2018. [DOI: 10.1039/c8qo00313k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclic tripyrrin “locked” by a bridging benzyl moiety: enhancing the molecular rigidity and tuning aggregation and fluorescence via intermolecular halogen interactions.
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Affiliation(s)
- Jun-Fei Wang
- College of Materials Science and Optoelectronics Technology
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Yuhang Yao
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Yingying Ning
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Yin-Shan Meng
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Chun-Liang Hou
- College of Materials Science and Optoelectronics Technology
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Jing Zhang
- College of Materials Science and Optoelectronics Technology
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Jun-Long Zhang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
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34
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Roy S, Samanta D, Kumar P, Maji TK. Pure white light emission and charge transfer in organogels of symmetrical and unsymmetrical π-chromophoric oligo-p-(phenyleneethynylene) bola-amphiphiles. Chem Commun (Camb) 2018; 54:275-278. [DOI: 10.1039/c7cc08046h] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The gelation behavior of two novel π-chromophoric bola-amphiphiles has been studied and solution processable pure white light emitting and CT gels have been realized.
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Affiliation(s)
- Syamantak Roy
- Molecular Materials Laboratory
- Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bangalore-560064
- India
| | - Debabrata Samanta
- Molecular Materials Laboratory
- Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bangalore-560064
- India
| | - Pramod Kumar
- Molecular Materials Laboratory
- Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bangalore-560064
- India
| | - Tapas Kumar Maji
- Molecular Materials Laboratory
- Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bangalore-560064
- India
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35
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Kumar G, Goel R, Paul K, Luxami V. Investigation of rotameric conformations of substituted imidazo-[1,2- a]pyrazine: experimental and theoretical approaches. RSC Adv 2018; 8:9707-9717. [PMID: 35540834 PMCID: PMC9078725 DOI: 10.1039/c7ra13617j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Accepted: 02/19/2018] [Indexed: 12/16/2022] Open
Abstract
The different rotameric conformations of imidazo-[1,2-a]pyrazine have been synthesized and characterized by means of different experimental techniques, such as NMR, FTIR, and absorption spectroscopy and quantum chemical calculations. The different conformations were stabilized by hydrogen bonds, such as OH⋯N, ArH⋯N and ArH⋯ArH. The ground state optimizations and potential energy surface (PES) scanning profiles produced using density functional theory (DFT) show two stable rotameric forms for each molecule. The relative population of the conformations is affected by the strength of the hydrogen bonds. The calculated absorption spectra and isotopic shielding constants were acquired by time-dependent density functional theory (TD-DFT) and gauge invariant atomic orbitals (GIAO)-DFT, respectively. The strength of the hydrogen bonding interactions that resulted in the different conformations was studied by quantum theory of atoms in molecules (QTAIM). The different rotameric conformations of imidazo-[1,2-a]pyrazine have been synthesized and characterized by means of different experimental techniques, such as NMR, FTIR, and absorption spectroscopy and quantum chemical calculations.![]()
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Affiliation(s)
- Gulshan Kumar
- School of Chemistry and Biochemistry
- Thapar University
- Patiala-147004
- India
| | - Richa Goel
- School of Chemistry and Biochemistry
- Thapar University
- Patiala-147004
- India
| | - Kamaldeep Paul
- School of Chemistry and Biochemistry
- Thapar University
- Patiala-147004
- India
| | - Vijay Luxami
- School of Chemistry and Biochemistry
- Thapar University
- Patiala-147004
- India
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