1
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Zhang Z, Arias JJR, Kaehr H, Liu Y, Murata R, Unno M, Yodsin N, Pimbaotham P, Jungsuttiwong S, Rammo M, Heo JM, Kim J, Rebane A, Laine RM. Conjugation through Si-O-Si bonds, silsesquioxane (SQ) half cage copolymers, extended examples via SiO 0.5/SiO 1.5 units: multiple emissive states in violation of Kasha's rule. Dalton Trans 2024; 53:10328-10337. [PMID: 38836318 DOI: 10.1039/d4dt00567h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
We previously reported that phenyl- and vinyl-silsesquioxanes (SQs), [RSiO1.5]8,10,12 (R = Ph or vinyl) functionalized with three or more conjugated moieties show red-shifted absorption- and emission features suggesting 3-D conjugation via a cage centered LUMOs. Corner missing [PhSiO1.5]7(OSiMe3)3 and edge opened, end capped [PhSiO1.5]8(OSiMe2)2 (double decker, DD) analogs also offer red shifted spectra again indicating 3-D conjugation and a cage centered LUMO. Copolymerization of DD [PhSiO1.5]8(OSiMevinyl)2 with multiple R-Ar-Br gives copolymers with emission red-shifts that change with degree of polymerization (DP), exhibit charge transfer to F4TNCQ and terpolymer averaged red-shifts suggesting through chain conjugation even with two (O-Si-O) end caps possibly via a cage centered LUMO. Surprisingly, ladder (LL) SQ, (vinylMeSiO2)[PhSiO1.5]4(O2SiMevinyl) copolymers offer emission red-shifts even greater for analogous copolymers requiring a different explanation. Here we assess the photophysical behavior of copolymers of a more extreme SQ form: the half cage [PhSiO1.5]4(OSiMe2Vinyl)4, Vy4HC SQs. We again see small red-shifted absorptions coupled with significant red-shifted emissions, even with just a half cage, thus further supporting the existence of pπ-dπ and/or σ*-π* conjugation through Si-O-Si bonds and contrary to most traditional views of Si-O-Si linked polymers. These same copolymers donate an electron to F4TCNQ generating the radical anion, F4TCNQ-. as further proof of conjugation. Column chromatographic separation of short from longer chain oligomers reveals a direct correlation between DP and emission λmax red-shifts as another indication of conjugation. Further, one- and two-photon absorption and emission spectroscopy reveals multiple excited fluorescence-emitting states in a violation of Kasha's rule wherein emission occurs only from the lowest excited state. Traditional modeling studies again find HOMO LUMO energy levels residing only on the aromatic co-monomers rather than through Si-O-Si bonds as recently found in related polymers.
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Affiliation(s)
- Zijing Zhang
- Department of Mater. Sci. and Engin., Macromolecular Science and Eng. Center University of Michigan, Ann Arbor, 48109-21236, USA.
| | - Jose Jonathan Rubio Arias
- Department of Mater. Sci. and Engin., Macromolecular Science and Eng. Center University of Michigan, Ann Arbor, 48109-21236, USA.
| | - Hana Kaehr
- Department of Mater. Sci. and Engin., Macromolecular Science and Eng. Center University of Michigan, Ann Arbor, 48109-21236, USA.
| | - Yujia Liu
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology Gunma University, Kiryu 376-8515, Japan
| | - Ryoga Murata
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology Gunma University, Kiryu 376-8515, Japan
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology Gunma University, Kiryu 376-8515, Japan
| | - Nuttapon Yodsin
- Department of Chemistry, Faculty of Science, Silpakorn University, Nakorn Pathom 73000, Thailand
| | - Pimjai Pimbaotham
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Siriporn Jungsuttiwong
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Matt Rammo
- National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | - Jung-Moo Heo
- Department of Mater. Sci. and Engin., Macromolecular Science and Eng. Center University of Michigan, Ann Arbor, 48109-21236, USA.
| | - Jinsang Kim
- Department of Mater. Sci. and Engin., Macromolecular Science and Eng. Center University of Michigan, Ann Arbor, 48109-21236, USA.
| | | | - Richard M Laine
- Department of Mater. Sci. and Engin., Macromolecular Science and Eng. Center University of Michigan, Ann Arbor, 48109-21236, USA.
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2
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Wang H, Nie MX, Lin X, Li XQ, Liu H, Guo QY, Han D, Fu Q. Cage-rearranged and cage-intact syntheses of azido-functionalized larger T 10 and T 12 POSSs. Dalton Trans 2024; 53:9467-9472. [PMID: 38767505 DOI: 10.1039/d4dt00440j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Herein, we investigate the product type and distribution during the synthesis of azido-functionalized larger polyhedral oligomeric silsesquioxanes (POSSs) using 3-chloropropyl- and chloromethyldimethylsilylethyl-functionalized T8, T10, and T12 POSSs as precursors. Our findings indicate that cage rearrangement occurs for the 3-chloropropyl-functionalized POSS cages with a stability order of T12 > T10 > T8, while the chloromethyldimethylsilylethyl-functionalized POSS cages remain structurally intact after the nucleophilic substitution.
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Affiliation(s)
- Hui Wang
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China.
| | - Ming-Xi Nie
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China.
| | - Xiong Lin
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China.
| | - Xiang-Qian Li
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, P. R. China.
| | - Hao Liu
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, P. R. China.
| | - Qing-Yun Guo
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, P. R. China.
| | - Di Han
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China.
| | - Qiang Fu
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China.
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3
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Li H, Han X, Zhang L, Yu W, Bie W, Wei M, Wang Z, Kong F, Wang W. Sulfonated polyhedral oligomeric silsesquioxane-cyclodextrin hybrid polymers for efficient removal of micropollutants from water. Carbohydr Polym 2023; 312:120832. [PMID: 37059548 DOI: 10.1016/j.carbpol.2023.120832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 03/09/2023] [Accepted: 03/15/2023] [Indexed: 04/03/2023]
Abstract
Herein, β-cyclodextrin-containing hybrid polymers (P1, P2 and P3) were prepared through crosslinking partially benzylated β-cyclodextrin (PBCD) by octavinylsilsesquioxane (OVS). P1 stood out in screening studies and the residual hydroxyl groups of PBCD was sulfonate-functionalized. The obtained P1-SO3Na showed greatly enhanced adsorption towards cationic MPs and maintained the excellent adsorption performance towards neutral MPs. The rate constants (k2) of cationic MPs upon P1-SO3Na were 9.8-34.8 times larger than those upon P1. The equilibrium uptakes of the neutral and cationic MPs upon P1-SO3Na were above 94.5 %. Meanwhile, P1-SO3Na demonstrated appreciable adsorption capacities, excellent selectivity, effective adsorption of mixed MPs at environmental levels and good reusability. These results confirmed the great potential of P1-SO3Na as effective adsorbent to remove MPs from water.
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4
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Lin X, Deng YY, Zhang Q, Han D, Fu Q. Effect of POSS Size on the Porosity and Adsorption Performance of Hybrid Porous Polymers. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Xiong Lin
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, P. R. China
| | - Yi-Yi Deng
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, P. R. China
| | - Qin Zhang
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, P. R. China
| | - Di Han
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, P. R. China
| | - Qiang Fu
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, P. R. China
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5
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Zhang Z, Guan J, Ansari R, Kieffer J, Yodsin N, Jungsuttiwong S, Laine RM. Further Proof of Unconventional Conjugation via Disiloxane Bonds: Double Decker Sesquioxane [vinylMeSi(O 0.5) 2(PhSiO 1.5) 8(O 0.5) 2SiMevinyl] Derived Alternating Terpolymers Give Excited-State Conjugation Averaging That of the Corresponding Copolymers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zijing Zhang
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48105, United States
| | - Jun Guan
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48105, United States
| | - Ramin Ansari
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48105, United States
| | - John Kieffer
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48105, United States
| | - Nuttapon Yodsin
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Siriporn Jungsuttiwong
- Department of Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Richard M. Laine
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48105, United States
- Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48105, United States
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6
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Dascalu M, Stoica AC, Bele A, Macsim AM, Bargan A, Varganici CD, Stiubianu GT, Racles C, Shova S, Cazacu M. Octakis(Carboxyalkyl-Thioethyl)Silsesquioxanes and Derived Metal Complexes: Synthesis, Characterization and Catalytic Activity Assessments. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02408-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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7
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Gon M, Tanaka K, Chujo Y. Recent Progresses on Designable Hybrids with Stimuli-Responsive Optical Properties Originating from Molecular Assembly Concerning Polyhedral Oligomeric Silsesquioxane. Chem Asian J 2022; 17:e202200144. [PMID: 35322576 DOI: 10.1002/asia.202200144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/18/2022] [Indexed: 11/10/2022]
Abstract
In this review, we describe recent progresses on the stimuli-responsive hybrid materials based on polyhedral oligomeric silsesquioxane (POSS) and their applications as a chemical sensor. In particular, we explain the unique functions originating from molecular assembly concerning POSS-containing soft materials mainly from our studies. POSS has an inorganic cubic core composed of silicon-oxygen (Si-O) bonds and organic substituents at each vertex. Owing to intrinsic properties of POSS, such as high thermal stability, rigidity, and low chemical reactivity, various robust hybrid materials have been developed. From the numerous numbers of POSS hybrids, we herein focus on the environment-sensitive optical materials in which molecular assembly of POSS itself and functional units connected to POSS should be a key factor for expressing material properties. We also explain the mechanisms of chemical sensors originating from these stimuli-responsive optical properties. Stimuli-responsive excimer emission and pollutant detectors, nanoplastic sensors with the water-dispersive POSS networks, trans fatty acid sensors, turn-on luminescent sensors for aerobic condition and fluoride anion sensors are described. We also mention the mechanochromic polyurethane hybrids and the thermally-durable mechanochromic luminescent materials. The roles of the unique optical properties from soft materials composed of rigid POSS, which doesn't have significant light-absorption and emission properties in the visible region, are surveyed.
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Affiliation(s)
- Masayuki Gon
- Kyoto University: Kyoto Daigaku, Polymer Chemistry, Kyoto University, Katsura Nishikyo-ku, 615-8510, Kyoto, JAPAN
| | - Kazuo Tanaka
- Kyoto University, Graduate School of Engineering, Department of Polymer Chemistry, Katsura, Nishikyo-ku, 615-8510, Kyoto, JAPAN
| | - Yoshiki Chujo
- Kyoto University: Kyoto Daigaku, Polymer chemistry, Kyoto University, Katsura Nishikyo-ku, 615-8510, Kyoto, JAPAN
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8
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Siripanich P, Bureerug T, Chanmungkalakul S, Sukwattanasinitt M, Ervithayasuporn V. Mono and Dumbbell Silsesquioxane Cages as Dual-Response Fluorescent Chemosensors for Fluoride and Polycyclic Aromatic Hydrocarbons. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00460] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pattara Siripanich
- Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), and Center for Inorganic and Materials Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
| | - Teeraya Bureerug
- Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), and Center for Inorganic and Materials Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
| | - Supphachok Chanmungkalakul
- Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), and Center for Inorganic and Materials Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
| | - Mongkol Sukwattanasinitt
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
- Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Vuthichai Ervithayasuporn
- Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), and Center for Inorganic and Materials Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
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9
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Laine RM. Unconventional Conjugation in macromonomers and polymers. Chem Commun (Camb) 2022; 58:10596-10618. [DOI: 10.1039/d2cc03968k] [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
Multiple reviews have been written concerning conjugated macromonomers and polymers both as general descriptions and for specific applications. In most examples, conjugation occurs via elec-tronic communication via continuous overlap of...
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10
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Mahbub S, Saha S, Ramakrishna G, Furgal JC. Beads on a Chain Fluorescent Oligomeric Materials: Interactions of Conjugated Organic Cross-Linkers with Silsesquioxane Cages. J Phys Chem B 2021; 125:11457-11472. [PMID: 34641684 DOI: 10.1021/acs.jpcb.1c05282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Organic electronic materials have advantages over inorganics in terms of versatility, cost, and processability. Recent advancements in organic materials for light-emitting diodes (OLED), field effect transistors (OFET), and photovoltaics have engendered extensive innovation potential on this field. In this research, we focus on synthesizing SQ (silsesquioxane) based oligomers cross-linked by dibromo-aromatic linkers and explore how the cross-linker influences their photophysical properties. Bis-trialkoxy silyl (linker) model compounds were synthesized to compare noncage photophysical properties with the oligomers. Several techniques such as UV/vis, fluorescence, FTIR, and thermal gravimetric analysis (TGA) have been used to characterize the systems. Time-resolved fluorescence and femtosecond transient absorption spectroscopy were used to understand the excited state dynamics of these materials. Studies were carried out to understand the differences between monomers and oligomers and potential energy transfer and charge transfer between the cages and cross-linking chromophores. Transient absorption showed lower energy absorption from the excited states, suggesting short-range communication between moieties. Single photon counting studies have shown distinct lifetime differences between most linkers and cages display possible excitation energy transfer through these materials. Transient absorption anisotropy measurements have shown signatures for excitation energy transfer between linker chromophores for oligomeric compounds. The silsesquioxane (SQ) backbone of the oligomers gives substantial thermal stability as well as solution processability, giving better flexibility for achieving energy transfer between linking chromophores.
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Affiliation(s)
- Shahrea Mahbub
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Sukanya Saha
- Department of Chemistry and Biochemistry, Western Michigan University, Kalamazoo, Michigan 49008, United States
| | - Guda Ramakrishna
- Department of Chemistry and Biochemistry, Western Michigan University, Kalamazoo, Michigan 49008, United States
| | - Joseph C Furgal
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
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11
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Guan J, Sun Z, Ansari R, Liu Y, Endo A, Unno M, Ouali A, Mahbub S, Furgal JC, Yodsin N, Jungsuttiwong S, Hashemi D, Kieffer J, Laine RM. Conjugated Copolymers That Shouldn't Be. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jun Guan
- Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109-2136 USA
| | - Zejun Sun
- Department of Chemistry National University of Singapore Singapore 117549 Singapore
| | - Ramin Ansari
- Department of Chemical Engineering University of Michigan Ann Arbor MI 48109-2136 USA
| | - Yujia Liu
- Department of Chemistry and Chemical Biology Gunma University Kiryu 376-8515 Japan
| | - Aimi Endo
- Department of Chemistry and Chemical Biology Gunma University Kiryu 376-8515 Japan
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology Gunma University Kiryu 376-8515 Japan
| | - Armelle Ouali
- ICGM Univ Montpellier, CNRS, ENSCM Montpellier 34296 France
| | - Shahrea Mahbub
- Department of Chemistry and Center for Photochemical Science Bowling Green State University Bowling Green OH 43403 USA
| | - Joseph C. Furgal
- Department of Chemistry and Center for Photochemical Science Bowling Green State University Bowling Green OH 43403 USA
| | - Nuttapon Yodsin
- Center for Organic Electronic and Alternative Energy, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science Ubon Ratchathani University Ubon Ratchathani 34190 Thailand
| | - Siriporn Jungsuttiwong
- Center for Organic Electronic and Alternative Energy, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science Ubon Ratchathani University Ubon Ratchathani 34190 Thailand
| | - Daniel Hashemi
- Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109-2136 USA
| | - John Kieffer
- Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109-2136 USA
| | - Richard M. Laine
- Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109-2136 USA
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12
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Guan J, Sun Z, Ansari R, Liu Y, Endo A, Unno M, Ouali A, Mahbub S, Furgal JC, Yodsin N, Jungsuttiwong S, Hashemi D, Kieffer J, Laine RM. Conjugated Copolymers That Shouldn't Be. Angew Chem Int Ed Engl 2021; 60:11115-11119. [PMID: 33631031 DOI: 10.1002/anie.202014932] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Indexed: 01/06/2023]
Abstract
Multiple studies have explored using cage silsesquioxanes (SQs) as backbone elements in hybrid polymers motivated by their well-defined structures and physical and mechanical properties. As part of this general exploration, we report unexpected photophysical properties of copolymers derived from divinyl double decker (DD) SQs, [vinyl(Me)Si(O0.5 )2 ][PhSiO1.5 ]8 [(O0.5 )2 Si(Me)vinyl] (vinylDDvinyl). These copolymers exhibit strong emission red-shifts relative to model compounds, implying unconventional conjugation, despite vinyl(Me)Si(O-)2 siloxane bridges. In an effort to identify minimum SQ structures that do/do not offer extended conjugation, we explored Heck catalyzed co-polymerization of vinyl-ladder(LL)-vinyl compounds, vinyl(Me/Ph)Si(O0.5 )2 [PhSiO1.5 ]4 (O0.5 )2 Si(Me/Ph)vinyl, with Br-Ar-Br. Most surprising, the resulting oligomers show 30-60 nm emission red-shifts beyond those seen with vinylDDvinyl analogs despite lacking a true cage. Further evidence for unconventional conjugation includes apparent integer charge transfer (ICT) between LL-co-thiophene, bithiophene, and thienothiophene with 10 mol % F4 TCNQ, suggesting potential as p-type doped organic/inorganic semiconductors.
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Affiliation(s)
- Jun Guan
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109-2136, USA
| | - Zejun Sun
- Department of Chemistry, National University of Singapore, Singapore, 117549, Singapore
| | - Ramin Ansari
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109-2136, USA
| | - Yujia Liu
- Department of Chemistry and Chemical Biology, Gunma University, Kiryu, 376-8515, Japan
| | - Aimi Endo
- Department of Chemistry and Chemical Biology, Gunma University, Kiryu, 376-8515, Japan
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology, Gunma University, Kiryu, 376-8515, Japan
| | - Armelle Ouali
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, 34296, France
| | - Shahrea Mahbub
- Department of Chemistry and Center for Photochemical Science, Bowling Green State University, Bowling Green, OH 43403, USA
| | - Joseph C Furgal
- Department of Chemistry and Center for Photochemical Science, Bowling Green State University, Bowling Green, OH 43403, USA
| | - Nuttapon Yodsin
- Center for Organic Electronic and Alternative Energy, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190, Thailand
| | - Siriporn Jungsuttiwong
- Center for Organic Electronic and Alternative Energy, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190, Thailand
| | - Daniel Hashemi
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109-2136, USA
| | - John Kieffer
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109-2136, USA
| | - Richard M Laine
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109-2136, USA
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13
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Lenora C, Hu NH, Furgal JC. Thermally Stable Fluorogenic Zn(II) Sensor Based on a Bis(benzimidazole)pyridine-Linked Phenyl-Silsesquioxane Polymer. ACS OMEGA 2020; 5:33017-33027. [PMID: 33403263 PMCID: PMC7774080 DOI: 10.1021/acsomega.0c04366] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 12/04/2020] [Indexed: 05/05/2023]
Abstract
A 2,6-bis(2-benzimidazolyl) pyridine-linked silsesquioxane-based semi-branched polymer was synthesized, and its photophysical and metal-sensing properties have been investigated. The polymer is thermally stable up to 285 °C and emits blue in both solid and solution state. The emission of the polymer is sensitive to pH and is gradually decreased and quenched upon protonation of the linkers. The initial emission color is recoverable upon deprotonation with triethylamine. The polymer also shows unique spectroscopic properties in both absorption and emission upon long-term UV irradiation, with red-shifted absorption and emission not present in a simple blended system of phenylsilsesquioxane and linker, suggesting that a long-lived energy transfer or charge separated state is present. In addition, the polymer acts as a fluorescence shift sensor for Zn(II) ions, with red shifts observed from 464 to 528 nm, and reversible binding by the introduction of a competitive ligand such as tetrahydrofuran. The ion sensing mechanism can differentiate Zn(II) from Cd(II) by fluorescence color shifts, which is unique because they are in the same group of the periodic table and possess similar chemical properties. Finally, the polymer system embedded in a paper strip acts as a fluorescent chemosensor for Zn(II) ions in solution, showing its potential as a solid phase ion extractor.
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Affiliation(s)
| | - Nai-hsuan Hu
- Department of Chemistry and Center
for Photochemical Sciences, Bowling Green
State University, Bowling
Green, Ohio 43403, United States
| | - Joseph C. Furgal
- Department of Chemistry and Center
for Photochemical Sciences, Bowling Green
State University, Bowling
Green, Ohio 43403, United States
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14
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Cabrera-González J, Chaari M, Teixidor F, Viñas C, Núñez R. Blue Emitting Star-Shaped and Octasilsesquioxane-Based Polyanions Bearing Boron Clusters. Photophysical and Thermal Properties. Molecules 2020; 25:E1210. [PMID: 32156041 PMCID: PMC7179457 DOI: 10.3390/molecules25051210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/05/2020] [Accepted: 03/05/2020] [Indexed: 12/19/2022] Open
Abstract
High boron content systems were prepared by the peripheral functionalisation of 1,3,5-triphenylbenzene (TPB) and octavinylsilsesquioxane (OVS) with two different anionic boron clusters: closo-dodecaborate (B12) and cobaltabisdicarbollide (COSAN). TPB was successfully decorated with three cluster units by an oxonium ring-opening reaction, while OVS was bonded to eight clusters by catalysed metathesis cross-coupling. The resulting compounds were spectroscopically characterised, and their solution-state photophysical properties analysed. For TPB, the presence of COSAN dramatically quenches the fluorescence emission (λem = 369 nm; ΦF = 0.8%), while B12-substituted TPB shows an appreciable emission efficiency (λem = 394 nm; ΦF = 12.8%). For octasilsesquioxanes, the presence of either COSAN or B12 seems to be responsible for ∼80 nm bathochromic shift with respect to the core emission, but both cases show low emission fluorescence (ΦF = 1.4-1.8%). In addition, a remarkable improvement of the thermal stability of OVS was observed after its functionalisation with these boron clusters.
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Affiliation(s)
| | | | | | | | - Rosario Núñez
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus U.A.B., 08193 Bellaterra, Barcelona, Spain; (J.C.-G.); (M.C.); (F.T.); (C.V.)
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15
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Imoto H, Ueda Y, Sato Y, Nakamura M, Mitamura K, Watase S, Naka K. Corner‐ and Side‐Opened Cage Silsesquioxanes: Structural Effects on the Materials Properties. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901182] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
- Materials Innovation Lab Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
| | - Yukiho Ueda
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
| | - Yuri Sato
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
| | - Masashi Nakamura
- Morinomiya Center Osaka Research Institute of Industrial Science and Technology Morinomiya Center 1‐6–50 Morinomiya, Joto‐ku 536‐8553 Osaka Japan
| | - Koji Mitamura
- Morinomiya Center Osaka Research Institute of Industrial Science and Technology Morinomiya Center 1‐6–50 Morinomiya, Joto‐ku 536‐8553 Osaka Japan
| | - Seiji Watase
- Morinomiya Center Osaka Research Institute of Industrial Science and Technology Morinomiya Center 1‐6–50 Morinomiya, Joto‐ku 536‐8553 Osaka Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
- Materials Innovation Lab Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
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16
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Żak P, Bołt M, Grzelak M, Rachuta K, Dudziec B, Januszewski R, Marciniec B, Marciniak B. Synthesis and properties of chromophore-functionalized monovinylsilsesquioxane derivatives. NEW J CHEM 2020. [DOI: 10.1039/d0nj01250e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Herein, an effective and selective synthesis of chromophore-functionalized monovinylsilsesquioxane derivatives by a cross-metathesis reaction along with discussion of their photophysical and thermal resistance properties is disclosed.
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Affiliation(s)
- Patrycja Żak
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8
- 61-614 Poznan
- Poland
| | - Małgorzata Bołt
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8
- 61-614 Poznan
- Poland
| | - Magdalena Grzelak
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8
- 61-614 Poznan
- Poland
- Center for Advanced Technologies
| | - Karolina Rachuta
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8
- 61-614 Poznan
- Poland
| | - Beata Dudziec
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8
- 61-614 Poznan
- Poland
- Center for Advanced Technologies
| | - Rafał Januszewski
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8
- 61-614 Poznan
- Poland
- Center for Advanced Technologies
| | - Bogdan Marciniec
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8
- 61-614 Poznan
- Poland
- Center for Advanced Technologies
| | - Bronislaw Marciniak
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8
- 61-614 Poznan
- Poland
- Center for Advanced Technologies
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17
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Furgal JC, Lenora CU. Green routes to silicon-based materials and their environmental implications. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2019-0024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Abstract
The “greening” of silicon chemistry is fundamentally important for the future of the field. Traditional methods used to make silicon-based materials rely on carbon rich processes that are highly energy intensive, cause pollution, and are unsustainable. Researchers have taken up the challenge of developing new chemistries to circumvent the difficulties associated with traditional silicon material synthesis. Most of this work has been in the conversion of the “green” carbon neutral biogenic silica source rice hull ash (RHA, ~85 % silica) into useful silicon building blocks such as silica’s, silicon, and alkoxysilanes by using the inherently higher surface area and reactivity of RHA to sidestep the low reactivity of mined silica sources. This is a review of the work that has been done in the area of developing more environmentally benign methods for the synthesis and use of silicon containing materials to eliminate the negative impact on the environment.
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Affiliation(s)
- Joseph C. Furgal
- Department of Chemistry and Center for Photochemical Sciences , Bowling Green State University , 43403 Bowling Green , United States of America
| | - Chamika U. Lenora
- Department of Chemistry and Center for Photochemical Sciences , Bowling Green State University , 43403 Bowling Green , United States of America
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18
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Yan Y, Laine RM, Liu H. In Situ Methylation Transforms Aggregation‐Caused Quenching into Aggregation‐Induced Emission: Functional Porous Silsesquioxane‐Based Composites with Enhanced Near‐Infrared Emission. Chempluschem 2019; 84:1630-1637. [DOI: 10.1002/cplu.201900568] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/13/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Yehao Yan
- Key Laboratory of Special Functional Aggregated MaterialsMinistry of EducationSchool of Chemistry and Chemical EngineeringShandong University Jinan P.R. China
| | - Richard M. Laine
- Macromolecular Science and EngineeringUniversity of Michigan Ann Arbor USA
| | - Hongzhi Liu
- Key Laboratory of Special Functional Aggregated MaterialsMinistry of EducationSchool of Chemistry and Chemical EngineeringShandong University Jinan P.R. China
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19
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Guan J, Tomobe K, Madu I, Goodson T, Makhal K, Trinh MT, Rand SC, Yodsin N, Jungsuttiwong S, Laine RM. Photophysical Properties of Functionalized Double Decker Phenylsilsesquioxane Macromonomers: [PhSiO1.5]8[OSiMe2]2 and [PhSiO1.5]8[O0.5SiMe3]4. Cage-Centered Lowest Unoccupied Molecular Orbitals Form Even When Two Cage Edge Bridges Are Removed, Verified by Modeling and Ultrafast Magnetic Light Scattering Experiments. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00700] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Nuttapon Yodsin
- Department of Chemistry and Center of Excellent for Innovation in Chemistry, Ubon Ratchathani University, Ubon 34190, Thailand
| | - Siriporn Jungsuttiwong
- Department of Chemistry and Center of Excellent for Innovation in Chemistry, Ubon Ratchathani University, Ubon 34190, Thailand
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20
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Li W, Jiang C, Liu H, Yan Y, Liu H. Octa[4‐(9‐carbazolyl)phenyl]silsesquioxane‐Based Porous Material for Dyes Adsorption and Sensing of Nitroaromatic Compounds. Chem Asian J 2019; 14:3363-3369. [DOI: 10.1002/asia.201900951] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/18/2019] [Indexed: 01/19/2023]
Affiliation(s)
- Wanli Li
- Key Laboratory of Special Functional Aggregated MaterialsMinistry of EducationSchool of Chemistry and Chemical EngineeringShandong University Jinan 250100 P. R. China
| | - Chundong Jiang
- Key Laboratory of Special Functional Aggregated MaterialsMinistry of EducationSchool of Chemistry and Chemical EngineeringShandong University Jinan 250100 P. R. China
| | - Huanhuan Liu
- Key Laboratory of Special Functional Aggregated MaterialsMinistry of EducationSchool of Chemistry and Chemical EngineeringShandong University Jinan 250100 P. R. China
| | - Yehao Yan
- Key Laboratory of Special Functional Aggregated MaterialsMinistry of EducationSchool of Chemistry and Chemical EngineeringShandong University Jinan 250100 P. R. China
| | - Hongzhi Liu
- Key Laboratory of Special Functional Aggregated MaterialsMinistry of EducationSchool of Chemistry and Chemical EngineeringShandong University Jinan 250100 P. R. China
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21
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Kato K, Gon M, Tanaka K, Chujo Y. Stretchable Conductive Hybrid Films Consisting of Cubic Silsesquioxane-capped Polyurethane and Poly(3-hexylthiophene). Polymers (Basel) 2019; 11:E1195. [PMID: 31319479 PMCID: PMC6680475 DOI: 10.3390/polym11071195] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/15/2019] [Accepted: 07/16/2019] [Indexed: 12/23/2022] Open
Abstract
We fabricated stretchable and electric conductive hybrids consisting of polyhedral oligomeric silsesquioxane (POSS)-capped polyurethane (PUPOSS) and doped poly(3-hexylthiophene) (P3HT). In order to realize robust films coexisting polar conductive components in hydrophobic elastic matrices, we employed POSS introduced into the terminals of the polyurethane chains as a compatibilizer. Through the simple mixing and drop-casting with the chloroform solutions containing doped P3HT and polyurethane polymers, homogeneous hybrid films were obtained. From the conductivity and mechanical measurements, it was indicated that hybrid materials consisting of PUPOSS and doped P3HT showed high conductivity and stretchability even with a small content of doped P3HT. From the mechanical studies, it was proposed that POSS promoted aggregation of doped P3HT in the films, and ordered structures should be involved in the aggregates. Efficient carrier transfer could occur through the POSS-inducible ordered structures in the aggregates.
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Affiliation(s)
- Keigo Kato
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masayuki Gon
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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22
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Synthetic Routes to Silsesquioxane-Based Systems as Photoactive Materials and Their Precursors. Polymers (Basel) 2019; 11:polym11030504. [PMID: 30960488 PMCID: PMC6473884 DOI: 10.3390/polym11030504] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/08/2019] [Accepted: 03/09/2019] [Indexed: 11/24/2022] Open
Abstract
Over the past two decades, organic optoelectronic materials have been considered very promising. The attractiveness of this group of compounds, regardless of their undisputable application potential, lies in the possibility of their use in the construction of organic–inorganic hybrid materials. This class of frameworks also considers nanostructural polyhedral oligomeric silsesquioxanes (POSSs) with “organic coronae” and precisely defined organic architectures between dispersed rigid silica cores. A significant number of papers on the design and development of POSS-based organic optoelectronic as well as photoluminescent (PL) materials have been published recently. In view of the scientific literature abounding with numerous examples of their application (i.e., as OLEDs), the aim of this review is to present efficient synthetic pathways leading to the formation of nanocomposite materials based on silsesquioxane systems that contain organic chromophores of complex nature. A summary of stoichiometric and predominantly catalytic methods for these silsesquioxane-based systems to be applied in the construction of photoactive materials or their precursors is given.
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23
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Tang P, Xiang K, Wei H, Li S, Xu C. A high-emissive and stable luminescent silafluorene hybrid constructed by hydrosilylation. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.1177/1747519819857504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Under Karstedt’s catalyst, an organic–inorganic hybrid fluorescent nano-molecular dendrimer has been synthesized by grafting silafluorene units onto the polyhedral oligomeric silsesquioxane core through hydrosilylation reaction. The new hybrid molecule exhibits high solid fluorescence quantum efficiency because of the nano-size and large steric hindrance of the polyhedral oligomeric silsesquioxane core. Thermogravimetric analysis shows that the thermal stability of the target compound is effectively improved by the presence of polyhedral oligomeric silsesquioxane.
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Affiliation(s)
- Ping Tang
- School of Science, Beijing Technology and Business University, Beijing, China
| | - Kai Xiang
- Beijing Key Laboratory of Research and Application for Aerospace Green Propellants, Beijing Institute of Aerospace Testing Technology, Beijing, China
| | - Huijie Wei
- School of Science, Beijing Technology and Business University, Beijing, China
| | - Shuhong Li
- School of Science, Beijing Technology and Business University, Beijing, China
| | - Caihong Xu
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
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24
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Krug DJ, Asuncion MZ, Laine RM. Facile Approach to Recycling Highly Cross-Linked Thermoset Silicone Resins under Ambient Conditions. ACS OMEGA 2019; 4:3782-3789. [PMID: 31459590 PMCID: PMC6649146 DOI: 10.1021/acsomega.8b02927] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 12/31/2018] [Indexed: 06/10/2023]
Abstract
Silicone resins are traditional thermoset polymers with an inorganic backbone, affording chemical inertness and high thermal stability, which also makes them inherently difficult to recycle by traditional methods. Here, we demonstrate that catalytic amounts of fluoride ion at room temperature solubilize highly cross-linked silicone resins initially cured up to 250 °C. After solubilization equilibria are achieved, solvent is removed to reform the polymer network. Coatings on aluminum substrates and monoliths of virgin and recycled silicone resins were evaluated for hydrophobicity, wear resistance, substrate adhesion, and thermal stability. Silicones recycled under optimized conditions retained nearly 100% wear resistance, thermal stability, and adhesion properties. In some instances, the recycled coatings offer properties superior to the initial materials.
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Affiliation(s)
- David J. Krug
- Continental
Structural Plastics, A Teijin Group Company, Auburn Hills, Michigan 48326, United States
- Macromolecular
Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Michael Z. Asuncion
- Continental
Structural Plastics, A Teijin Group Company, Auburn Hills, Michigan 48326, United States
| | - Richard M. Laine
- Macromolecular
Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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25
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Żak P, Pietraszuk C. Application of olefin metathesis in the synthesis of functionalized polyhedral oligomeric silsesquioxanes (POSS) and POSS-containing polymeric materials. Beilstein J Org Chem 2019; 15:310-332. [PMID: 30800181 PMCID: PMC6369983 DOI: 10.3762/bjoc.15.28] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 01/07/2019] [Indexed: 12/31/2022] Open
Abstract
This mini-review summarizes the applications of olefin metathesis in synthesis and functionalization of polyhedral oligomeric silsesquioxanes (POSS) and POSS-containing polymeric materials. Three types of processes, i.e., cross metathesis (CM) of vinyl-substituted POSS with terminal olefins, acyclic diene metathesis (ADMET) copolymerization of divinyl-substituted POSS with α,ω-dienes and ring-opening metathesis polymerization (ROMP) of POSS-substituted norbornene (or other ROMP susceptible cycloolefins) are discussed. Emphasis was put on the synthetic and catalytic aspects rather than on the properties and applications of synthesized materials.
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Affiliation(s)
- Patrycja Żak
- Adam Mickiewicz University in Poznań, Faculty of Chemistry, Umultowska 89b, 61-614 Poznań, Poland
| | - Cezary Pietraszuk
- Adam Mickiewicz University in Poznań, Faculty of Chemistry, Umultowska 89b, 61-614 Poznań, Poland
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26
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Kaźmierczak J, Kuciński K, Lewandowski D, Hreczycho G. Ru-Catalyzed Dehydrogenative Silylation of POSS-Silanols with Hydrosilanes: Its Introduction to One-Pot Synthesis. Inorg Chem 2019; 58:1201-1207. [DOI: 10.1021/acs.inorgchem.8b02645] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Joanna Kaźmierczak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
| | - Krzysztof Kuciński
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
| | - Dariusz Lewandowski
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
| | - Grzegorz Hreczycho
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
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27
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Taylor EL, Metcalf KJ, Carlotti B, Lai CT, Modica JA, Schatz GC, Mrksich M, Goodson T. Long-Range Energy Transfer in Protein Megamolecules. J Am Chem Soc 2018; 140:15731-15743. [PMID: 30375862 PMCID: PMC6710013 DOI: 10.1021/jacs.8b08208] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In this investigation, we report evidence for energy transfer in new protein-based megamolecules with tunable distances between donor and acceptor fluorescent proteins. The megamolecules used in this work are monodisperse oligomers, with molecular weights of ∼100-300 kDa and lengths of ∼5-20 nm, and are precisely defined structures of fusion protein building blocks and covalent cross-linkers. Such structures are promising because the study of energy transfer in protein complexes is usually difficult in this long length regime due to synthetic limitations. We incorporated fluorescent proteins into the megamolecule structure and varied the separation distance between donor and acceptor by changing the length of the cross-linker in dimer conjugates and inserting nonfluorescent spacer proteins to create oligomers. Two-photon absorption measurements demonstrated strong coupling between donor and acceptor dipoles in the megamolecules. For the dimer systems, no effect of the cross-linker length on energy transfer efficiency was observed with the steady-state fluorescence investigation. However, for the same dimer conjugates, energy transfer rates decreased upon increasing cross-linker length, as evaluated by fluorescence up-conversion. Molecular dynamics simulations were used to rationalize the results, providing quantitative agreement between measured and calculated energy transfer lengths for steady-state results, and showing that the differences between the time-resolved and steady-state measurements arise from the long time scale for large-scale fluctuations in the megamolecule structure. Our results show an increase in energy transfer length with increasing megamolecule size. This is evidence for long-range energy transfer in large protein megamolecules.
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Affiliation(s)
- Elijah L. Taylor
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kevin J. Metcalf
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Benedetta Carlotti
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia 06123, Italy
| | - Cheng-Tsung Lai
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Justin A. Modica
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - George C. Schatz
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Milan Mrksich
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Theodore Goodson
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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28
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Eshun A, Cai Z, Awies M, Yu L, Goodson T. Investigations of Thienoacene Molecules for Classical and Entangled Two-Photon Absorption. J Phys Chem A 2018; 122:8167-8182. [PMID: 30251540 DOI: 10.1021/acs.jpca.8b06312] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Investigations of the optical effects in thienoacene chromophores with different central atoms were performed. These chromophores provide a basis for the comparison of the linear, two-photon, and entangled two-photon properties in organic molecules with varying degrees of dipolar or quadrupolar character. Linear absorption and emission as well as time-dependent density functional theory calculations were performed for the chromophores investigated. Measurements of the classical two-photon absorption (TPA), entangled two-photon absorption (ETPA), as well as entangled two-photon fluorescence were experimentally performed for the four chromophores. Electronic structure calculations were utilized to provide estimates of the classical two-photon absorption coefficients. The results of the measured entangled two-photon cross sections were compared with theoretical estimates for the molecules investigated. It is found that the dipole (transition or permanent) pathway can have an effect on the trends in the entangled photon absorption process in dipolar organic chromophores. This study helps predict the properties of the entangled two-photon effect in chromophores with different dipolar and quadrupolar character.
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Affiliation(s)
- Audrey Eshun
- Department of Chemistry , University of Michigan , 930 N University Avenue , Ann Arbor , Michigan 48109 , United States
| | - Zhengxu Cai
- School of Material Science and Engineering , Beijing Institute of Technology , 5 South Zhongguancun Street , Haidan District, Beijing , China
| | - Mohammed Awies
- Department of Chemistry and The James Franck Institute , The University of Chicago , 929 East 57th Street , Chicago , Illinois 60637 , United States
| | - Luping Yu
- Department of Chemistry and The James Franck Institute , The University of Chicago , 929 East 57th Street , Chicago , Illinois 60637 , United States
| | - T Goodson
- Department of Chemistry , University of Michigan , 930 N University Avenue , Ann Arbor , Michigan 48109 , United States
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29
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Chanmungkalakul S, Ervithayasuporn V, Boonkitti P, Phuekphong A, Prigyai N, Kladsomboon S, Kiatkamjornwong S. Anion identification using silsesquioxane cages. Chem Sci 2018; 9:7753-7765. [PMID: 30429984 PMCID: PMC6194494 DOI: 10.1039/c8sc02959h] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 09/13/2018] [Indexed: 11/29/2022] Open
Abstract
Anthracene-conjugated octameric silsesquioxane cages thermodynamically display intramolecular excimer formation, which can be used to identify anions through the change of fluorescence.
Anthracene-conjugated octameric silsesquioxane (AnSQ) cages, prepared via Heck coupling between octavinylsilsesquioxane (OVS) and 9-bromoanthracene, thermodynamically display intramolecular excimer emissions. More importantly, these hosts are sensitive to each anionic guest, thereby resulting in change of anthracene excimer formation, displaying the solvent-dependent fluorescence and allowing us to distinguish up to four ions such as F–, OH–, CN– and PO43– by fluorescence spectroscopy. Depending on the solvent polarity, for example, both F– and CN– quenched the fluorescence emission intensity in THF, but only F– could enhance the fluorescence in all other solvents. The presence of PO43– results in fluorescence enhancements in high polarity solvents such as DMSO, DMF, and acetone, while OH– induces enhancements only in low polarity solvents (e.g. DCM and toluene). A picture of the anion recognizing ability of AnSQ was obtained through principal component analysis (PCA) with NMR and FTIR confirming the presence of host–guest interactions. Computational modeling studies demonstrate the conformation of host–guest complexation and also the change of excimer formation. Detection of F–, CN– and OH– by AnSQ hosts in THF is noticeable with the naked eye, as indicated by strong color changes arising from charge transfer complex formation upon anion addition.
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Affiliation(s)
- Supphachok Chanmungkalakul
- Department of Chemistry , Center of Excellence for Innovation in Chemistry (PERCH-CIC) , Center for Inorganic and Materials Chemistry , Faculty of Science , Mahidol University , Rama VI Road, Ratchathewi , Bangkok 10400 , Thailand . ;
| | - Vuthichai Ervithayasuporn
- Department of Chemistry , Center of Excellence for Innovation in Chemistry (PERCH-CIC) , Center for Inorganic and Materials Chemistry , Faculty of Science , Mahidol University , Rama VI Road, Ratchathewi , Bangkok 10400 , Thailand . ;
| | - Patcharaporn Boonkitti
- Department of Chemistry , Center of Excellence for Innovation in Chemistry (PERCH-CIC) , Center for Inorganic and Materials Chemistry , Faculty of Science , Mahidol University , Rama VI Road, Ratchathewi , Bangkok 10400 , Thailand . ;
| | - Alisa Phuekphong
- Department of Chemistry , Center of Excellence for Innovation in Chemistry (PERCH-CIC) , Center for Inorganic and Materials Chemistry , Faculty of Science , Mahidol University , Rama VI Road, Ratchathewi , Bangkok 10400 , Thailand . ;
| | - Nicha Prigyai
- Department of Chemistry , Center of Excellence for Innovation in Chemistry (PERCH-CIC) , Center for Inorganic and Materials Chemistry , Faculty of Science , Mahidol University , Rama VI Road, Ratchathewi , Bangkok 10400 , Thailand . ;
| | - Sumana Kladsomboon
- Department of Radiological Technology , Faculty of Medical Technology , Mahidol University , Nakhon Pathom 73170 , Thailand
| | - Suda Kiatkamjornwong
- Faculty of Science , Chulalongkorn University , Phayathai Road , Bangkok 10330 , Thailand.,FRST , Division of Science , The Royal Society of Thailand , Sanam Suepa , Dusit , Bangkok 10300 , Thailand
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Kaźmierczak J, Kuciński K, Stachowiak H, Hreczycho G. Introduction of Boron Functionalities into Silsesquioxanes: Novel Independent Methodologies. Chemistry 2018; 24:2509-2514. [PMID: 29315930 DOI: 10.1002/chem.201705898] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Indexed: 11/06/2022]
Abstract
Owing to their versatile application possibilities, silsesquioxanes (SQs) are of considerable interest for creating hybrid inorganic-organic materials. In this report, two novel and independent strategies for the direct attachment of boron functionalities to silsesquioxanes are presented. Encouraged by our previous work concerning the synthesis of borasiloxanes through the catalyst-free dehydrogenative coupling of silanols and boranes, we decided to apply our method to a synthesis of various boron-functionalized silsesquioxanes. During our tests, we also investigated the activity of scandium(III) triflate, which we have previously used as an excellent catalyst for the obtaining of Si-O-Si and Si-O-Ge moieties. As a result, we also discovered a novel approach for the O-borylation of Si-OH groups in silsesquioxanes with allylborane. Both routes are highly chemoselective and efficiently lead to the obtaining of Si-O-B moiety under air atmosphere and at room temperature.
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Affiliation(s)
- Joanna Kaźmierczak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614, Poznań, Poland
| | - Krzysztof Kuciński
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614, Poznań, Poland
| | - Hanna Stachowiak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614, Poznań, Poland
| | - Grzegorz Hreczycho
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614, Poznań, Poland
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Caydamli Y, Yildirim E, Shen J, Fang X, Pasquinelli MA, Spontak RJ, Tonelli AE. Nanoscale considerations responsible for diverse macroscopic phase behavior in monosubstituted isobutyl-POSS/poly(ethylene oxide) blends. SOFT MATTER 2017; 13:8672-8677. [PMID: 29114685 DOI: 10.1039/c7sm01788j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nanocomposites prepared by incorporating functionalized polyhedral oligomeric silsesquioxane (POSS) into polymer matrices afford a wide range of versatile hybrid materials for use in technologies ranging from cosmetics and pharmaceuticals to sensors and batteries. Here, we investigate the phase behavior of nanocomposites composed of poly(ethylene oxide) (PEO) and monosubstituted isobutyl POSS (iPOSS) modified with different functional moieties. Microscopic analyses of blends containing these iPOSS variants reveal the existence of different macroscopic morphologies and surface topologies. In the presence of octa-iPOSS, a POSS-rich surface cell motif reminiscent of breath patterns develops, whereas addition of allyl-iPOSS promotes the formation of surface plates. While aminopropyl-iPOSS forms dispersed aggregates, maleamic acid-iPOSS disperses in PEO with little effect on PEO crystal morphology. We perform rotational isomeric state Monte Carlo simulations to discern the effect of monosubstitution on the interaction energy between iPOSS and PEO, and establish the molecular-level origin for these observed differences in phase behavior.
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Affiliation(s)
- Yavuz Caydamli
- Department of Textile Engineering, Chemistry & Science and Fiber & Polymer Science Program, North Carolina State University, Raleigh, NC 27695, USA.
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33
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Shen R, Liu Y, Yang W, Hou Y, Zhao X, Liu H. Triphenylamine-Functionalized Silsesquioxane-Based Hybrid Porous Polymers: Tunable Porosity and Luminescence for Multianalyte Detection. Chemistry 2017; 23:13465-13473. [DOI: 10.1002/chem.201702501] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Rong Shen
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan P. R. China
| | - Yun Liu
- Department of Materials Science and Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Wenyan Yang
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan P. R. China
| | - Yuqi Hou
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan P. R. China
| | - Xiaoling Zhao
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan P. R. China
| | - Hongzhi Liu
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan P. R. China
- Key Laboratory of Organosilicon; and Material Technology of Ministry of Education; Hangzhou Normal University; Hangzhou 31112 P. R. China
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Chen WC, Yuan Y, Xiong Y, Rogach AL, Tong QX, Lee CS. Aromatically C6- and C9-Substituted Phenanthro[9,10-d]imidazole Blue Fluorophores: Structure-Property Relationship and Electroluminescent Application. ACS APPLIED MATERIALS & INTERFACES 2017; 9:26268-26278. [PMID: 28692277 DOI: 10.1021/acsami.7b06547] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, a series of aromatically substituted phenanthro[9,10-d]imidazole (PI) fluorophores at C6 and C9 (no. 6 and 9 carbon atoms) have been synthesized and systematically characterized by theoretical, thermal, photophysical, electrochemical, and electroluminescent (EL) studies. C6 and C9 modifications have positive influences on the thermal properties of the new materials. Theoretical calculations suggest that the C6 and the C9 positions of PI are electronically different. Theoretical and experimental evidences of intramolecular charge transfer (ICT) between two identical moieties attaching to the C6 and the C9 positions are observed. Photophysical properties of the fluorophores are greatly influenced by size and conjugation extent of the substituents as well as linking steric hindrance. It is found that the C6 and C9 positions afford moderate conjugated extension compared to the C2 modification. Moreover, ICT characteristics of the new fluorophores increase as the size of the substituted aromatic group, and are partially influenced by steric hindrance, with the anthracene and the pyrene derivatives having the strongest ICT excited properties. EL performances of the fluorophores were evaluated as host emitters or dopants in organic light-emitting devices (OLEDs). Most of the devices showed significantly improved efficiencies compared to the OLED using the nonmodified emitter. Among all the devices, a 5 wt % TPI-Py doped device exhibited excellent performances with an external quantum efficiency >5% at 1000 cd/m2 and a deep-blue color index of (0.155, 0.065), which are comparable to the most advanced deep-blue devices. Our study can give useful information for designing C6/C9-modificated PI fluorophores and provide an efficient approach for constructing high-performance deep-blue OLEDs.
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Affiliation(s)
- Wen-Cheng Chen
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, Guangdong P.R. China
| | - Yi Yuan
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University , 243 University Road, Shantou, Guangdong 515063, P.R. China
| | | | | | - Qing-Xiao Tong
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University , 243 University Road, Shantou, Guangdong 515063, P.R. China
| | - Chun-Sing Lee
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, Guangdong P.R. China
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Narikiyo H, Kakuta T, Matsuyama H, Gon M, Tanaka K, Chujo Y. Development of the optical sensor for discriminating isomers of fatty acids based on emissive network polymers composed of polyhedral oligomeric silsesquioxane. Bioorg Med Chem 2017; 25:3431-3436. [PMID: 28465085 DOI: 10.1016/j.bmc.2017.04.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 04/20/2017] [Accepted: 04/21/2017] [Indexed: 11/27/2022]
Abstract
It was shown that water-soluble network polymers composed of polyhedral oligomeric silsesquioxane (POSS) had hydrophobic spaces inside the network because of strong hydrophobicity of the cubic silica cage. In this study, the water-soluble POSS network polymers connected with triphenylamine derivatives (TPA-POSS) were synthesized, and their functions as a sensor for discriminating the geometric isomers of fatty acids were investigated. Accordingly, in the photoluminescence spectra, different time-courses of intensity and peak wavelengths of the emission bands were detected from the TPA-POSS-containing solution in the presence of cis- or trans-fatty acids during incubation. Furthermore, variable time-dependent changes were obtained by changing coexisting ratios between two geometric isomers. From the mechanistic investigation, it was implied that these changes could be originated from the difference in the degree of interaction between the POSS networks and each fatty acid. Our data could be applicable for constructing a sensing material for generation and proportion of trans-fatty acids in the oil.
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Affiliation(s)
- Hayato Narikiyo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takahiro Kakuta
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroki Matsuyama
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masayuki Gon
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
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Carbonell E, Bivona LA, Fusaro L, Aprile C. Silsesquioxane–Terpyridine Nano Building Blocks for the Design of Three-Dimensional Polymeric Networks. Inorg Chem 2017; 56:6393-6403. [DOI: 10.1021/acs.inorgchem.7b00471] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Esther Carbonell
- Unit of Nanomaterial Chemistry (CNano),
Department of Chemistry, University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Lucia A. Bivona
- Unit of Nanomaterial Chemistry (CNano),
Department of Chemistry, University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Luca Fusaro
- Unit of Nanomaterial Chemistry (CNano),
Department of Chemistry, University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Carmela Aprile
- Unit of Nanomaterial Chemistry (CNano),
Department of Chemistry, University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
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37
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Krug DJ, Laine RM. Durable and Hydrophobic Organic-Inorganic Hybrid Coatings via Fluoride Rearrangement of Phenyl T 12 Silsesquioxane and Siloxanes. ACS APPLIED MATERIALS & INTERFACES 2017; 9:8378-8383. [PMID: 28192657 DOI: 10.1021/acsami.6b16121] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
There have been many successful efforts to enhance the water shedding properties of hydrophobic and superhydrophobic coatings, but durability is often a secondary concern. Here, we describe durable and hydrophobic coatings prepared via fluoride catalyzed rearrangement reaction of dodecaphenylsilsesquioxane [PhSiO1.5]12 (DDPS) with octamethylcyclotetrasiloxane (D4). Hydrophobic properties and wear resistance are maximized by incorporating both low surface energy moieties and cross-linkable moieties into the siloxane network. Water contact angles as high as 150 ± 4° were achieved even after 150 wear cycles with SiC sandpaper (2000 grit, 2 kPa). These hybrid organic-inorganic copolymers also have high thermal stabilities after curing at 250 °C (Td5% ≥ 340 °C in air) due to the siloxane network with a maximum Td5% of >460 °C measured for the system with the highest silsesquioxane content. The coating systems presented here offer a unique combination of hydrophobicity and mechanical/thermal stability and could greatly expand the utility of water repellent coatings.
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Affiliation(s)
- David J Krug
- Macromolecular Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
- Continental Structural Plastics , Auburn Hills, Michigan 48326, United States
| | - Richard M Laine
- Macromolecular Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
- Materials Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
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Ueda K, Tanaka K, Chujo Y. Synthesis of POSS Derivatives Having Dual Types of Alkyl Substituents and Their Application as a Molecular Filler for Low-Refractive and Highly Durable Materials. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20160338] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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39
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TANAKA K, CHUJO Y. Development and Applications of Designable Hybrids Based on POSS “Element-Blocks”. KOBUNSHI RONBUNSHU 2017. [DOI: 10.1295/koron.2016-0064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kazuo TANAKA
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
| | - Yoshiki CHUJO
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
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40
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Remarkably high miscibility of octa-substituted POSS with commodity conjugated polymers and molecular fillers for the improvement of homogeneities of polymer matrices. Polym J 2016. [DOI: 10.1038/pj.2016.84] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Furgal JC, Laine RM. Nucleophilic Attack of R-lithium at Tetrahedral Silicon in Alkoxysilanes. An Alternate Mechanism. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
| | - Richard M. Laine
- Department of Materials Science and Engineering, University of Michigan
- Department of Macromolecular Science and Engineering, University of Michigan
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42
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Preparation and thermal properties of soluble polysilsesquioxanes containing hydrophobic side-chain groups and their hybridization with organic polymers. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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43
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Ye Q, Zhou H, Xu J. Cubic Polyhedral Oligomeric Silsesquioxane Based Functional Materials: Synthesis, Assembly, and Applications. Chem Asian J 2016; 11:1322-37. [DOI: 10.1002/asia.201501445] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Indexed: 12/28/2022]
Affiliation(s)
- Qun Ye
- Institute of Materials Research and Engineering; Agency for Science, Research and Engineering (A*STAR); 2 Fusionopolis Way, Innovis, #08-03 Singapore 138634 Singapore
| | - Hui Zhou
- Institute of Materials Research and Engineering; Agency for Science, Research and Engineering (A*STAR); 2 Fusionopolis Way, Innovis, #08-03 Singapore 138634 Singapore
| | - Jianwei Xu
- Institute of Materials Research and Engineering; Agency for Science, Research and Engineering (A*STAR); 2 Fusionopolis Way, Innovis, #08-03 Singapore 138634 Singapore
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44
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Li L, Liu H. Rapid Preparation of Silsesquioxane-Based Ionic Liquids. Chemistry 2016; 22:4713-6. [DOI: 10.1002/chem.201600186] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Liguo Li
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P.R. China
| | - Hongzhi Liu
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P.R. China
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology; Ministry of Education; East China University of Science and Technology; Shanghai 200237 P.R. China
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45
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Borovin E, Callone E, Ribot F, Diré S. Mechanism and Kinetics of Oligosilsesquioxane Growth in the In Situ Water Production Sol–Gel Route: Dependence on Water Availability. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501220] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Evgeny Borovin
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy, http://web.unitn.it/en/dii
| | - Emanuela Callone
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy, http://web.unitn.it/en/dii
| | - Francois Ribot
- Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Sorbonne Universités, UPMC Univ Paris 06, CNRS, Collège de France 11 place Marcelin Berthelot, 75005 Paris, France
| | - Sandra Diré
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy, http://web.unitn.it/en/dii
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46
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Furgal JC, Goodson III T, Laine RM. D
5h [PhSiO1.5]10 synthesis via F− catalyzed rearrangement of [PhSiO1.5]n. An experimental/computational analysis of likely reaction pathways. Dalton Trans 2016; 45:1025-39. [DOI: 10.1039/c5dt04182a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Fluoride catalyzed rearrangement of PhSiO1.5 favoring [PhSiO1.5]10.
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Affiliation(s)
| | - Theodore Goodson III
- Department of Chemistry
- University of Michigan
- Ann Arbor
- USA
- Macromolecular Science and Engineering Center
| | - Richard M. Laine
- Macromolecular Science and Engineering Center
- University of Michigan
- Ann Arbor
- USA
- Department of Materials Sci. and Eng
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47
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Gon M, Sato K, Tanaka K, Chujo Y. Controllable intramolecular interaction of 3D arranged π-conjugated luminophores based on a POSS scaffold, leading to highly thermally-stable and emissive materials. RSC Adv 2016. [DOI: 10.1039/c6ra14971e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This manuscript describes the inorganic cubic core as an advantageous scaffold for realizing solid-state emissive materials with high thermal stability.
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Affiliation(s)
- Masayuki Gon
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Keita Sato
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
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48
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Shen R, Liu H. Construction of bimodal silsesquioxane-based porous materials from triphenylphosphine or triphenylphosphine oxide and their size-selective absorption for dye molecules. RSC Adv 2016. [DOI: 10.1039/c6ra02963a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Phosphorus-containing porous materials from octavinylsilsesquioxane possessed unique bimodal structure and exhibited an excellent size-selective absorption for dye molecules.
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Affiliation(s)
- Rong Shen
- Key Laboratory of Special Functional Aggregated Materials
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
| | - Hongzhi Liu
- Key Laboratory of Special Functional Aggregated Materials
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
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49
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Irie Y, Naka K. Single component transparent free-standing films based on polyhedral octasilicate-core dendrimers bearing carbazole terminal groups and their emission properties. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27811] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yasuyuki Irie
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology; Goshokaido-Cho, Matsugasaki Sakyo-Ku Kyoto 606-8585 Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology; Goshokaido-Cho, Matsugasaki Sakyo-Ku Kyoto 606-8585 Japan
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50
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Miyauchi S, Sugioka T, Sumida Y, Kaneko Y. Preparation of soluble polysilsesquioxane containing phthalimido side-chain groups and its optical and thermal properties. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.04.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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