1
|
Tateyama A, Nagura K, Yamanaka M, Nakanishi T. Alkyl-π Functional Molecular Gels: Control of Elastic Modulus and Improvement of Electret Performance. Angew Chem Int Ed Engl 2024; 63:e202402874. [PMID: 38512717 DOI: 10.1002/anie.202402874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/15/2024] [Accepted: 03/20/2024] [Indexed: 03/23/2024]
Abstract
The development of optoelectronically-active soft materials is drawing attention to the application of soft electronics. A room-temperature solvent-free liquid obtained by modifying a π-conjugated moiety with flexible yet bulky alkyl chains is a promising functional soft material. Tuning the elastic modulus (G') is essential for employing optoelectronically-active alkyl-π liquids in deformable devices. However, the range of G' achieved through the molecular design of alkyl-π liquids is limited. We report herein a method for controlling G' of alkyl-π liquids by gelation. Adding 1 wt % low-molecular-weight gelator formed the alkyl-π functional molecular gel (FMG) and increased G' of alkyl-π liquids by up to seven orders of magnitude while retaining the optical properties. Because alkyl-π FMGs have functional π-moieties in the gel medium, this new class of gels has a much higher content of π-moieties of up to 59 wt % compared to conventional π-gels of only a few wt %. More importantly, the gel state has a 23 % higher charge-retention capacity than the liquid, providing better performance in deformable mechanoelectric generator-electret devices. The strategy used in this study is a novel approach for developing next-generation optoelectronically-active FMG materials.
Collapse
Affiliation(s)
- Akito Tateyama
- Division of Soft Matter, Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan
| | - Kazuhiko Nagura
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan
| | - Masamichi Yamanaka
- Meiji Pharmaceutical University (MPU), 2-522-1 Noshio, Kiyose, 204-8588, Japan
| | - Takashi Nakanishi
- Division of Soft Matter, Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan
| |
Collapse
|
2
|
Wakchaure VC, Channareddy G, Babu SS. Solvent-Free Organic Liquids: An Efficient Fluid Matrix for Unexplored Functional Hybrid Materials. Acc Chem Res 2024; 57:670-684. [PMID: 38350079 DOI: 10.1021/acs.accounts.3c00670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
ConspectusThe invention of solvent-free organic liquids (SOLs) was serendipitous. However, the curiosity-driven research in the later stage delivered new soft materials with exciting optical, and optoelectronic properties along with appealing physical characteristics suitable for the futuristic applications. A slight change in the molecular design resulted in a drastic change in the physical state of molecules demonstrating monomer-like features in the bulk. The basic idea of core isolation has been successful in delivering new SOLs with attractive functional properties. The unique fluid matrix associated with SOLs offers a tremendous opportunity for making hybrid materials by simple mixing. The chance to study the fundamentally important electron transfer, energy transfer, charge transfer interactions, triplet-state emissions, and even detailed NMR experiments in the solvent-free neat state is the major attraction of SOLs. Usually, solvents and their polarity control such molecular properties, and in the case of SOLs, it avoids the use of solvents to study such fundamentally important properties. Besides, SOLs protect the triplet emitters and excited state processes involving triplet states from quenchers and make the analysis possible under ambient conditions.Our effort in this direction was focused on tuning the ground and excited state properties by transforming conventional organic molecules to SOLs and further value addition by preparing the hybrid SOLs. We developed a series of hybrid SOLs, exploring room-temperature phosphorescence, thermally activated delayed fluorescence, charge or energy transfer between donor and acceptor SOLs, selective explosive sensing, etc. A slight variation in the chemical structure or optoelectronic properties of the individual components imparted exciting optical features for the hybrid SOLs. It includes nonemissive charge transfer, tunable emission exciplex, room temperature phosphorescence, and thermally activated delayed fluorescence SOLs. The liquid matrix of donor SOLs accommodated varying amounts of acceptor SOLs to tune the ground and excited state features. In all examples of donor-acceptor-based hybrid SOLs, even a low amount of acceptor, such as a donor-acceptor ratio of 1000:1, can cause pronounced optical properties. Hence, the evaluation of the optical properties of SOLs, especially, in the absence of solvents is so special that it avoids the interference of solvent molecules. Still, the major drawback of SOLs remains unsolved until we report polymerizable SOLs. Although a large variety of SOLs have been reported in the literature, the long-lasting problem of surface stickiness of SOLs was resolved by polymerizable SOLs. It enabled the development of flexible, foldable, and stretchable large-area luminescent films suitable for lighting and display devices. In this Account, we summarize our work on SOLs, hybrid SOLs, polymerizable SOLs, and the application of SOLs in selective sensing of explosives. Finally, an outlook on the feasibility of luminescent polymerizable SOLs in futuristic applications is provided.
Collapse
Affiliation(s)
- Vivek Chandrakant Wakchaure
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Goudappagouda Channareddy
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Sukumaran Santhosh Babu
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| |
Collapse
|
3
|
Ju CW, Wang XC, Li B, Ma Q, Shi Y, Zhang J, Xu Y, Peng Q, Zhao D. Evolution of organic phosphor through precision regulation of nonradiative decay. Proc Natl Acad Sci U S A 2023; 120:e2310883120. [PMID: 37934818 PMCID: PMC10655561 DOI: 10.1073/pnas.2310883120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 09/28/2023] [Indexed: 11/09/2023] Open
Abstract
Development of single-component organic phosphor attracts increasing interest due to its wide applications in optoelectronic technologies. Theoretically, activating efficient intersystem crossing (ISC) via 1(π, π*) to 3(π, π*) transitions, rather than 1(n, π*) → 3(π, π*) transitions, is an alternative access to purely organic phosphors but remains challenging. Herein, we designed and successfully synthesized the sila-8-membered ring fused biaryl benzoskeleton by transition metal catalysis, which served as a new organic phosphor with efficient 1(π, π*) to 3(π, π*) ISC. We first found that such a compound exhibits a record-long phosphorescence lifetime of 6.5 s at low temperature for single-component organic systems. Then, we developed two strategies to tune their decay channels to evolve such nonemissive molecules into bright phosphors with elongated lifetimes at room temperature: 1) Physic-based design, where quantitative analyses of electron-phonon coupling led us to reveal and hinder the major nonradiative channels, thus lighted up room temperature phosphorescence (RTP) with a lifetime of 480 ms at 298 K; 2) chemical geometry-driven molecular engineering, where a geometry-based descriptor ΔΘT1-S0/ΘS0 was developed for rational screening RTP candidates and further improved the RTP lifetime to 794 ms. This study clearly shows the power of interdiscipline among synthetic methodology, physics-based rational design, and computational modeling, which represents a paradigm for the development of an organic emitter.
Collapse
Affiliation(s)
- Cheng-Wei Ju
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin300071, People’s Republic of China
| | - Xi-Chao Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin300071, People’s Republic of China
| | - Bo Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin300071, People’s Republic of China
| | - Qiushi Ma
- Department of Chemistry, Marquette University, Milwaukee, WI53233
| | - Yuhao Shi
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing100049, People’s Republic of China
| | - Jinyu Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin300071, People’s Republic of China
| | - Yuzhi Xu
- Department of Chemistry, New York University, New York, NY10003
| | - Qian Peng
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing100049, People’s Republic of China
| | - Dongbing Zhao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin300071, People’s Republic of China
| |
Collapse
|
4
|
Gupta RK, Yoshida M, Saeki A, Guo Z, Nakanishi T. Alkyl-C 60 liquid electrets as deformable mechanoelectric generators. MATERIALS HORIZONS 2023; 10:3458-3466. [PMID: 37350547 DOI: 10.1039/d3mh00485f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
Special attention is being paid to the potential applicability of various soft electronics in deformable/wearable devices. These devices must be constantly connected to energy sources to ensure their uninterrupted operation. Electrets, which are capable of retaining quasi-permanent electric charges inside or on the surface of materials, are expected to be a battery-less power source. Here, we present a strategy for harvesting the charges in alkyl-C60 liquids. Suitable substitution of bulky yet flexible branched long-alkyl chains generated C60-mono-adducts and regioisomeric bis-adducts as room-temperature solvent-free liquids. These alkyl-C60 liquids were negatively poled by the corona-discharging and soaked in nylon fabric. The liquid of the C60 bis-adduct exhibited better charge retention in comparison to the liquid of the C60 mono-adduct. This suggests that the bulky long-alkyl chains provided proper insulation for the C60 core and charge trapping in the liquid. This charge-trapping behaviour and the inherent fluidity of the alkyl-C60 liquids enabled their fabrication into deformable mechanoelectric generator (MEG) devices. The MEG exhibited applicability as a deformable micropower source or vibration sensor by generating output voltage pulses even under folded/twisted/rolled conditions. The alkylated-liquid-based MEGs worked at frequencies similar to human body motion, showing promising potential for body motion sensors and healthcare applications.
Collapse
Affiliation(s)
- Ravindra Kumar Gupta
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan.
| | - Manabu Yoshida
- Flexible Electronic Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba 305-8565, Japan
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Zhenfeng Guo
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan.
- Division of Soft Matter, Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan
| | - Takashi Nakanishi
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan.
- Division of Soft Matter, Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan
| |
Collapse
|
5
|
Wakchaure VC, Veer SD, Nidhankar AD, Kumar V, Narayanan A, Babu SS. Polymerizable Solvent-free Organic Liquids: A New Approach for Large Area Flexible and Foldable Luminescent Films. Angew Chem Int Ed Engl 2023; 62:e202307381. [PMID: 37384373 DOI: 10.1002/anie.202307381] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/29/2023] [Accepted: 06/29/2023] [Indexed: 06/30/2023]
Abstract
The high demand for light-emitting and display devices made luminescent organic materials as attractive candidates. Solvent-free organic liquids are one of the promising emitters among them due to the salient features. However, the inherent limitations of forming sticky and noncurable surfaces must be addressed to become an alternate emitter for large-area device applications. Herein, we functionalized solvent-free organic liquids having monomeric emission in bulk with polymerizable groups to improve the processability. The polymerizable group on carbazole, naphthalene monoimide, and diketopyrrolopyrrole-based solvent-free liquid emitters enabled on-surface polymerization. These emitters alone and in combinations can be directly coated on a glass substrate without the help of solvents. Subsequent photo or thermal polymerization leads to stable, non-sticky, flexible, foldable, and free-standing large-area films with reasonably high quantum yield. Our demonstration of the tunable and white light-emitting films using polymerizable solvent-free liquids might be a potential candidate in flexible/foldable/stretchable electronics. The new concept of polymerizable liquid can be extended to other functional features suitable for futuristic applications.
Collapse
Affiliation(s)
- Vivek Chandrakant Wakchaure
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
| | - Sairam Dnyaneshwar Veer
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
| | - Aakash D Nidhankar
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
| | - Viksit Kumar
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
| | - Aswini Narayanan
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
| | - Sukumaran Santhosh Babu
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
| |
Collapse
|
6
|
Yamamoto Y, Lu F, Nakanishi T, Hayashi S. Liquid Structures and Diffusion Dynamics of Alkyl-Pyrene Liquids Studied by Molecular Dynamics Simulations. J Phys Chem B 2023. [PMID: 37093669 DOI: 10.1021/acs.jpcb.2c08385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Functional molecular liquids (FMLs) based on alkylated π-conjugated molecules have attracted attention as solvent-free and nonvolatile liquid materials with prominent optoelectronic features. Recently, novel FML compounds containing pyrene as the functional core were synthesized, and their rheological and photochemical properties were investigated. Although the molecules differ only in the number of alkyl chain substituents and their substitution positions, their viscosity coefficients are largely different beyond the Stokes-Einstein relation on the assumption of identical microscopic friction, indicating that local microscopic molecular interactions are crucial for the macroscopic rheological properties. Here, we report a theoretical study on the rheological properties of the alkyl-pyrene liquids by means of atomistic molecular dynamics (MD) simulations. We performed long-time MD simulations for tens of microseconds to obtain ample statistical samples of the alkyl-pyrene liquids and analyzed their liquid structures and diffusion dynamics based on spatiotemporal correlation functions. We found the formation of characteristic local liquid structures of π-π stacking of the pyrene moieties and locally anisotropic and anomalous diffusion dynamics, which remarkably vary depending on the alkyl substituent patterns. The present results provide an atomistic insight into the macroscopic rheological properties of alkyl-π FMLs and molecular design strategy for them.
Collapse
Affiliation(s)
- Yuki Yamamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Oiwake-Cho, Kitashirakawa, Sakyo-ku, Kyoto 606-8052, Japan
| | - Fengniu Lu
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Takashi Nakanishi
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Shigehiko Hayashi
- Department of Chemistry, Graduate School of Science, Kyoto University, Oiwake-Cho, Kitashirakawa, Sakyo-ku, Kyoto 606-8052, Japan
| |
Collapse
|
7
|
Order from disorder: Directed assembly of alkyl-π functional molecular liquids. Curr Opin Colloid Interface Sci 2022. [DOI: 10.1016/j.cocis.2022.101641] [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]
|
8
|
Stretchable π-conjugated polymer electrets for mechanoelectric generators. Polym J 2022. [DOI: 10.1038/s41428-022-00725-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
AbstractElectrets are materials that retain quasi-permanent electric charges and are attracting attention as key components of batteryless micropower supplies. A chemical structure that facilitates ionization and that can stabilize these charges, such as a π-conjugated system, is expected to increase the charge density compared with that of conventional insulating polymers. Here, we report a mechanoelectric generator (MEG) (vibrational energy harvester) that uses alkylated π-conjugated polymers (Alk-CPs), which can be monopolarized either into positive or negative mode electrets. With the attachment of insulating, bulky, yet flexible alkyl side chains to the π-conjugated backbone, the poled Alk-CPs showed long charge lifetime suitable for MEGs. The elastic modulus of the electret was adjusted to approximately match that of the stretchable polyurethane substrate by blending two miscible Alk-CPs with different elastic moduli, producing a laminated film that could be stretched up to 300%. The MEG presented showed conformability when applied to a deformable object.
Collapse
|
9
|
Li J, Wang JH, Cao XJ, Li XD, Ren XK, Yu ZQ. Peripherally Modified Tetraphenylethene: Emerging as a Room-Temperature Luminescent Disc-Like Nematic Liquid Crystal. ACS APPLIED MATERIALS & INTERFACES 2021; 13:35207-35213. [PMID: 34279082 DOI: 10.1021/acsami.1c10243] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A blue-light-emitting liquid crystalline (LC) material was designed and prepared. By employing a twisted luminescent core (i.e., tetraphenylethene), four peripheral LC units with long alkyl chains and the small polar benzyl-ether-typed linking groups, the resulting material displayed a hexagonal columnar phase near room temperature and a disc-like nematic phase between 32 and 70 °C. The columnar LC showed a high quantum yield of 0.49 at 20 °C, and the efficient luminescence property was retained even in the isotropic phase at high temperature. Additionally, the fluidity of the nematic phase rendered the LC a non-volatile solvent, and the proper addition of a red dye led to the achievement of polarized white-light emission, which revealed a promising application prospect in LC display fabrication.
Collapse
Affiliation(s)
- Jiahua Li
- College of Chemistry and Environmental Engineering, Institute of Low-Dimensional Materials Genome Initiative, Shenzhen University, Shenzhen 518071, P. R. China
| | - Jia-Hui Wang
- College of Chemistry and Environmental Engineering, Institute of Low-Dimensional Materials Genome Initiative, Shenzhen University, Shenzhen 518071, P. R. China
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Xiang-Jian Cao
- College of Chemistry and Environmental Engineering, Institute of Low-Dimensional Materials Genome Initiative, Shenzhen University, Shenzhen 518071, P. R. China
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Xiao-Dong Li
- College of Chemistry and Environmental Engineering, Institute of Low-Dimensional Materials Genome Initiative, Shenzhen University, Shenzhen 518071, P. R. China
| | - Xiang-Kui Ren
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Zhen-Qiang Yu
- College of Chemistry and Environmental Engineering, Institute of Low-Dimensional Materials Genome Initiative, Shenzhen University, Shenzhen 518071, P. R. China
| |
Collapse
|
10
|
Yan ZC, Li Y, Guo Z, Shinohara A, Nakanishi T, Chen G, Pan C, Stadler FJ. Rheology of Conjugated Polymers with Bulky and Flexible Side Chains. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhi-Chao Yan
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China
| | - Yanan Li
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China
| | - Zhenfeng Guo
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China
| | - Akira Shinohara
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba 305-0044, Japan
| | - Takashi Nakanishi
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba 305-0044, Japan
| | - Guangming Chen
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China
| | - Chengjun Pan
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China
| | - Florian J. Stadler
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China
| |
Collapse
|
11
|
Takaishi K, Matsumoto T, Kawataka M, Ema T. Circularly Polarized Luminescence Liquids Based on Siloxybinaphthyls: Best Binaphthyl Dihedral Angle in the Excited State. Angew Chem Int Ed Engl 2021; 60:9968-9972. [PMID: 33617100 DOI: 10.1002/anie.202101226] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Indexed: 12/18/2022]
Abstract
A series of axially chiral 1,1'-binaphthyls with trialkylsiloxy (OSiR3 ) groups were synthesized. Among them, 1 a-c possessing OSiR3 groups at the 7,7'-positions and methyl groups at the 2,2'-positions were liquids at room temperature, and the neat liquids showed circularly polarized luminescence (CPL) (R=Bu; Φfl,liquid =0.21, |glum,liquid |=1.6×10-3 ). The |glum,liquid | value is the highest of pure liquids. These compounds remained liquid over a broad range of temperatures, down to -50 °C. Time-dependent DFT calculations indicated that in the excited state, the binaphthyls adopt a transoid conformation with a small angle between the electric and magnetic transition dipole moments (θμ,m =77°), which is a key factor in their CPL activity. The best binaphthyl dihedral angle in the excited state is approximately 110°.
Collapse
Affiliation(s)
- Kazuto Takaishi
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Tomoki Matsumoto
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Miyu Kawataka
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Tadashi Ema
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| |
Collapse
|
12
|
Ju CW, Li B, Li L, Yan W, Cui C, Ma X, Zhao D. Modular Synthesis of Pentagonal and Hexagonal Ring-Fused NBN-Phenalenes Leading to an Excited-State Aromatization-Induced Structural Planarization Molecular Library. J Am Chem Soc 2021; 143:5903-5916. [PMID: 33825485 DOI: 10.1021/jacs.1c01339] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Although polycyclic aromatic hydrocarbons (PAHs) with a nitrogen-boron-nitrogen (NBN) moiety have recently attracted tremendous interest due to their intriguing electronic and optoelectronic properties, all of the NBN-fused π-systems reported to date are called NBN-dibenzophenalenes and were synthesized by electrophilic aromatic substitution. The synthesis of NBN-phenalenes remains challenging, and transition-metal catalysis has never been utilized to construct NBN-embedded π-scaffolds. Herein, a palladium-catalyzed cyclization/bicyclization strategy was developed for the synthesis of diverse pentagonal and hexagonal ring-fused NBN-phenalenes and half-NBN-phenalenes. All of the NBN-embedded π-scaffolds presented in our paper are fluorescent in both solution and the solid state. Further investigations showed that the five-membered NBN rings exhibit the properties of traditional luminogens, while those with a six-membered NBN ring generally undergo photoinduced structural planarization (PISP) and exhibit different colors and quantum yields of fluorescence with different concentrations in solution. Time-resolved spectroscopy and TD-DFT calculations revealed that excited-state aromatization is the driving force for PISP in hexagonal ring-fused NBN-π systems, leading to the formation of excimers. Notably, the scope of PISP compounds is still quite limited, and PISP has never been observed in NBN-π systems before. These hexagonal ring-fused NBN-π systems constitute a novel PISP molecular library and appear to be a new class of aggregation-induced excimer emission (AIEE) materials. Finally, the AIEE behavior of these six-membered NBN rings was applied to the detection of nitro explosives, achieving excellent sensitivity. In general, this work provides a new viewpoint for synthesizing NBN-fused π-systems and understanding the excited-state motion of luminogens.
Collapse
Affiliation(s)
- Cheng-Wei Ju
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Bo Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Lianghui Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Weiguang Yan
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Chunming Cui
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Xiaonan Ma
- Institute of Molecular Plus, Tianjin University, Tianjin 300072, People's Republic of China
| | - Dongbing Zhao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| |
Collapse
|
13
|
Sato Y, Mutoh Y, Morishita S, Tsurumachi N, Isoda K. Stimulus-Responsive Supercooled π-Conjugated Liquid and Its Application in Rewritable Media. J Phys Chem Lett 2021; 12:3014-3018. [PMID: 33733791 DOI: 10.1021/acs.jpclett.1c00247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Herein, we report a stimulus-responsive supercooled π-conjugated liquid and the possibility of its application in rewritable media. Supercooled liquid 1 showed a dramatic change in its photoluminescent color upon the transformation from liquid 1l (yellow emission) to solid 1s (green emission). These phenomena were revealed by fluorescence spectra as well as lifetime decay profiles.
Collapse
Affiliation(s)
- Yuika Sato
- Division in Advanced Materials Science, Graduate School of Engineering, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, Japan
| | - Yuichiro Mutoh
- Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Shuhei Morishita
- Division in Advanced Materials Science, Graduate School of Engineering, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, Japan
| | - Noriaki Tsurumachi
- Program in Advanced Materials Science, Faculty of Engineering and Design, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, Japan
| | - Kyosuke Isoda
- Program in Advanced Materials Science, Faculty of Engineering and Design, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, Japan
- Division in Advanced Materials Science, Graduate School of Engineering, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, Japan
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| |
Collapse
|
14
|
Takaishi K, Matsumoto T, Kawataka M, Ema T. Circularly Polarized Luminescence Liquids Based on Siloxybinaphthyls: Best Binaphthyl Dihedral Angle in the Excited State. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101226] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kazuto Takaishi
- Division of Applied Chemistry Graduate School of Natural Science and Technology Okayama University Tsushima Okayama 700-8530 Japan
| | - Tomoki Matsumoto
- Division of Applied Chemistry Graduate School of Natural Science and Technology Okayama University Tsushima Okayama 700-8530 Japan
| | - Miyu Kawataka
- Division of Applied Chemistry Graduate School of Natural Science and Technology Okayama University Tsushima Okayama 700-8530 Japan
| | - Tadashi Ema
- Division of Applied Chemistry Graduate School of Natural Science and Technology Okayama University Tsushima Okayama 700-8530 Japan
| |
Collapse
|
15
|
Bai X, Sun Y, Jiang Y, Zhao G, Jiang J, Yuan C, Liu M. Circularly Polarized Luminescence from Solvent-Free Chiral Organic π-Liquids. Angew Chem Int Ed Engl 2021; 60:3745-3751. [PMID: 33170551 DOI: 10.1002/anie.202013550] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/04/2020] [Indexed: 12/30/2022]
Abstract
The solvent-free organic π-liquids have been attracting increasing attentions owing to the inherent optoelectronic properties accompanied by the advantages of non-volatility and high processability. Herein, we reported a series of naphthalene derivatives substituted with chiral branched alkyl chains, which are present as liquids (Nap1-3) or solid (Nap4) at room temperature, depending on the substitution positions. Circular dichroism (CD) and circularly polarized luminescence (CPL) were only observed for enantiomeric Nap2 (2,3-substituted) liquid. It is suggested that the chiral aggregation in the π-liquid leads to the CD signal and the chiral excimer resulting in the CPL performance. When achiral anthracene or pyrene was dissolved in Nap2, the π-liquid could serve as chirality and energy transfer media in which both CD and CPL emerged from the achiral anthracene. A CPL dissymmetry factor (|glum |) of anthracene reached to 5.2×10-2 when dissolved in chiral Nap2 liquid, which is nearly two orders of magnitude higher than that of the pure Nap2 π-liquid.
Collapse
Affiliation(s)
- Xue Bai
- Key laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.,Department of Chemistry, School of Science, Tianjin University, Tianjin, 300354, China
| | - Yimeng Sun
- Key laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Yuqian Jiang
- Key laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Guangjiu Zhao
- Department of Chemistry, School of Science, Tianjin University, Tianjin, 300354, China
| | - Jian Jiang
- Key laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Chenhuan Yuan
- National Laboratory for Molecular Science (BNLMS), CAS Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190, China
| | - Minghua Liu
- Key laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.,National Laboratory for Molecular Science (BNLMS), CAS Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100190, China
| |
Collapse
|
16
|
Yoshino K, Sakai H, Shoji Y, Kajitani T, Anetai H, Akutagawa T, Fukushima T, Tkachenko NV, Hasobe T. Room-Temperature Pentacene Fluids: Oligoethylene Glycol Substituent-Controlled Morphologies and Singlet Fission. J Phys Chem B 2020; 124:11910-11918. [PMID: 33336576 DOI: 10.1021/acs.jpcb.0c09754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We report the first synthesis of solvent-free pentacene fluids at room temperature together with observation of singlet fission (SF). Three pentacenes with different number of ethylene glycol (EG) side chains (n) were employed (denoted as (EG)n-Pc-(EG)n: n = 2, 3, and 4). The morphologies of these pentacenes largely depend on the lengths of EG chains (n). (EG)3-Pc-(EG)3 and (EG)4-Pc-(EG)4 indicate fluid compounds at room temperature, whereas (EG)2-Pc-(EG)2 is a solid compound. Microscopic clustering with short-range interactions between pentacene chromophores was confirmed in X-ray diffraction profiles of solvent-free fluids. Such a structural trend is an important origin of SF and consistent with the steady-state spectroscopic results. To one's surprise, femtosecond transient absorption spectroscopy demonstrated that SF occurred in thin films prepared from solvent-free fluids of (EG)3-Pc-(EG)3 and (EG)4-Pc-(EG)4 in spite of such excessive EG chains.
Collapse
Affiliation(s)
- Keisuke Yoshino
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
| | - Hayato Sakai
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
| | - Yoshiaki Shoji
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.,RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Takashi Kajitani
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan.,Materials Analysis Division, Open Facility Center, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Hayato Anetai
- Graduate School of Engineering, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Tomoyuki Akutagawa
- Graduate School of Engineering, Tohoku University, Aoba-ku, Sendai 980-8578, Japan.,Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
| | - Takanori Fukushima
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Nikolai V Tkachenko
- Chemistry and Advanced Materials Group, Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, Tampere FI33720, Finland
| | - Taku Hasobe
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
| |
Collapse
|
17
|
Bai X, Sun Y, Jiang Y, Zhao G, Jiang J, Yuan C, Liu M. Circularly Polarized Luminescence from Solvent‐Free Chiral Organic π‐Liquids. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013550] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Xue Bai
- Key laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China
- Department of Chemistry School of Science Tianjin University Tianjin 300354 China
| | - Yimeng Sun
- Key laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China
| | - Yuqian Jiang
- Key laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China
| | - Guangjiu Zhao
- Department of Chemistry School of Science Tianjin University Tianjin 300354 China
| | - Jian Jiang
- Key laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China
| | - Chenhuan Yuan
- National Laboratory for Molecular Science (BNLMS) CAS Laboratory of Colloid, Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Science Beijing 100190 China
| | - Minghua Liu
- Key laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China
- National Laboratory for Molecular Science (BNLMS) CAS Laboratory of Colloid, Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Science Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100190 China
| |
Collapse
|
18
|
Schäfer C, Mony J, Olsson T, Börjesson K. Entropic Mixing Allows Monomeric-Like Absorption in Neat BODIPY Films. Chemistry 2020; 26:14295-14299. [PMID: 32809249 PMCID: PMC7702096 DOI: 10.1002/chem.202002463] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Indexed: 11/27/2022]
Abstract
Intermolecular interactions play a crucial role in materials chemistry because they govern thin film morphology. The photophysical properties of films of organic dyes are highly sensitive to the local environment, and a considerable effort has therefore been dedicated to engineering the morphology of organic thin films. Solubilizing side chains can successfully spatially separate chromophores, reducing detrimental intermolecular interactions. However, this strategy is also significantly decreasing achievable dye concentration. Here, five BODIPY derivatives containing small alkyl chains in the α-position were synthesized and photophysically characterized. By blending two or more derivatives, the increase in entropy reduces aggregation and therefore produces films with extreme dye concentration and, at the same time almost solution like absorption properties. Such a film was placed inside an optical cavity and the achieved system was demonstrated to reach the strong exciton-photon coupling regime by virtue of the achieved dye concentration and sharp absorption features of the film.
Collapse
Affiliation(s)
- Clara Schäfer
- Department of Chemistry and Molecular BiologyUniversity of GothenburgKemigården 4412 96GothenburgSweden
| | - Jürgen Mony
- Department of Chemistry and Molecular BiologyUniversity of GothenburgKemigården 4412 96GothenburgSweden
| | - Thomas Olsson
- Department of Chemistry and Molecular BiologyUniversity of GothenburgKemigården 4412 96GothenburgSweden
| | - Karl Börjesson
- Department of Chemistry and Molecular BiologyUniversity of GothenburgKemigården 4412 96GothenburgSweden
| |
Collapse
|
19
|
Iimori T, Sugawa H, Uchida N. Bright Solvent-Free Luminescent Liquid with Magnetism Composed of a Thiocyanate Complex of Ce(III). J Phys Chem B 2020; 124:8317-8322. [PMID: 32865418 DOI: 10.1021/acs.jpcb.0c04958] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Ionic liquids composed of a thiocyanate complex of Ce(III) exhibit bright cyan photoluminescence with a quantum yield close to 40% in addition to paramagnetism. The morphology of a droplet of ionic liquid changes in response to solvent vapor as a stimulus. The emission lifetime and thermal property are characterized. The Weiss temperature is evaluated from the magnetic property measurements, which indicates that antiferromagnetic exchange interaction exists between Ce(III) ions. Insight into the characteristics of the electronic transitions in the Ce(III) complex is obtained using quantum chemical calculations. Thiocyanate complexes of Ce(III) are demonstrated as promising building blocks to produce solvent-free luminescent functional materials.
Collapse
Affiliation(s)
- Toshifumi Iimori
- Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumotocho, Muroran, Hokkaido 050-8585, Japan
| | - Hiroto Sugawa
- Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumotocho, Muroran, Hokkaido 050-8585, Japan
| | - Nobuya Uchida
- Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumotocho, Muroran, Hokkaido 050-8585, Japan
| |
Collapse
|
20
|
Mijiddorj B, Shirakata H, Nakagawa T, Ueda K, Yokoyama Y, Kawamura I. Stereochemical Effects on the Self-Assembly of Pyrenylalanine-Phenylalanine Dipeptide. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20190376] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Batsaikhan Mijiddorj
- Graduate School of Engineering, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
- School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar 14201, Mongolia
| | - Hiroki Shirakata
- Graduate School of Engineering Science, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
| | - Tetsuya Nakagawa
- Graduate School of Engineering, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
- Graduate School of Engineering Science, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
| | - Kazuyoshi Ueda
- Graduate School of Engineering, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
| | - Yasushi Yokoyama
- Graduate School of Engineering, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
| | - Izuru Kawamura
- Graduate School of Engineering, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
- Graduate School of Engineering Science, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
| |
Collapse
|
21
|
Walsh JC, Hogan DT, Williams KLM, Brake SD, Venkataramana G, Misener TA, Wallace BJ, Johnson RP, Thompson DW, Zhao Y, Wagner BD, Bodwell GJ. Synthesis of Oligo(1,8-pyrenylene)s: A Series of Functional Molecular Liquids. Chempluschem 2020; 84:754-765. [PMID: 31944011 DOI: 10.1002/cplu.201900133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/25/2019] [Indexed: 12/20/2022]
Abstract
A monomer-through-pentamer series of oligo(1,8-pyrenylene)s was synthesized using a two-step iterative synthetic strategy. The trimer, tetramer, and pentamer are mixtures of atropisomers that interconvert slowly at room temperature (as shown by variable-temperature NMR analysis). They are liquids well below room temperature, as indicated by POM, DSC and SWAXS analysis. These oligomers are highly fluorescent both in the liquid state and in dilute solution (λF,max = 444-457 nm, φF = 0.80) and an investigation of their photophysical properties demonstrated that delocalization plays a larger role in their excited states than it does in related pyrene-based oligomers.
Collapse
Affiliation(s)
- Joshua C Walsh
- Chemistry Department, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL A1B 3X7, Canada
| | - David T Hogan
- Chemistry Department, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL A1B 3X7, Canada
| | - Kerry-Lynn M Williams
- Chemistry Department, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL A1B 3X7, Canada
| | - Simon D Brake
- Chemistry Department, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL A1B 3X7, Canada
| | - Gandikota Venkataramana
- Chemistry Department, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL A1B 3X7, Canada
| | - Tara A Misener
- Chemistry Department, University of Prince Edward Island, 550 University Ave, Charlottetown, PE C1A 4P3, Canada
| | - Brandon J Wallace
- Chemistry Department, University of Prince Edward Island, 550 University Ave, Charlottetown, PE C1A 4P3, Canada
| | - Richard P Johnson
- Department of Chemistry and Materials Science Program, University of New Hampshire, Durham, NH 03824, USA
| | - David W Thompson
- Chemistry Department, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL A1B 3X7, Canada
| | - Yuming Zhao
- Chemistry Department, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL A1B 3X7, Canada
| | - Brian D Wagner
- Chemistry Department, University of Prince Edward Island, 550 University Ave, Charlottetown, PE C1A 4P3, Canada
| | - Graham J Bodwell
- Chemistry Department, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL A1B 3X7, Canada
| |
Collapse
|
22
|
Chino Y, Nakanishi T, Kimura M. A near-infrared fluorescent phthalocyanine liquid developed through controlling intermolecular interactions. NEW J CHEM 2020. [DOI: 10.1039/c9nj05195c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A near-infrared fluorescent phthalocyanine (Pc) liquid was developed through introducing bulky yet flexible units onto the Pc skeleton.
Collapse
Affiliation(s)
- Yoshiaki Chino
- Department of Chemistry and Materials
- Faculty of Textile Science and Technology
- Shinshu University
- Ueda 386-8567
- Japan
| | - Takashi Nakanishi
- Frontier Molecules Group
- International Centre for Materials Nanoarchitectonics (WPI-MANA)
- National Institute for Materials Science (NIMS)
- Ibaraki 305-0044
- Japan
| | - Mutsumi Kimura
- Department of Chemistry and Materials
- Faculty of Textile Science and Technology
- Shinshu University
- Ueda 386-8567
- Japan
| |
Collapse
|
23
|
Ishimatsu R, Tashiro S, Kasahara T, Oshima J, Mizuno J, Nakano K, Adachi C, Imato T. Kinetics of Excimer Electrogenerated Chemiluminescence of Pyrene and 1-Pyrenebutyricacid 2-Ethylhexylester in Acetonitrile and an Ionic Liquid, Triethylpentylphosphonium Bis(trifluoromethanesulfonyl)imide. J Phys Chem B 2019; 123:10825-10836. [PMID: 31804083 DOI: 10.1021/acs.jpcb.9b08813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We describe the kinetics of excimer electrogenerated chemiluminescence (ECL) of a liquid pyrene derivative, 1-pyrenebutyricacid 2-ethylhexylester (PLQ) dissolved in a molecular solvent, acetonitrile (MeCN), and an ionic liquid, triethylpentylphosphonium bis(trifluoromethanesulfonyl)imide ([P2225][TFSI]). Pyrene was also used for comparison. To discuss the kinetics of the excimer ECLs, the photophysical and electrochemical properties and electronic states of PLQ and pyrene were revealed. The photoluminescence (PL) spectra, rate constants for the radiative transitions, and redox potentials of PLQ and pyrene dissolved in MeCN and [P2225][TFSI] suggest that as a solvent, [P2225][TFSI] behaves more polar than MeCN. By analyzing the PL decay curves, the rate constants to form the excimer were determined to be on the order of 109 and 107 M-1 s-1 in MeCN and [P2225][TFSI], respectively, which were limited by the diffusion. For neat PLQ (1.6 M), a delay of 0.3-0.4 ns for the excimer emission compared to the monomer emission was observed. It is likely that the delay corresponds to the timescale for arranging the conformation to form the excimer. The ECL of PLQ was generated by applying a square wave voltage to produce the radical anion and cation, and on the ECL spectra, the excimer emission was more prevailed compared to the PL spectra. Kinetic analysis for the electron transfer reaction between the radical ions based on Marcus theory indicates that the electron transfer is limited by the diffusion of the radical ions. Moreover, the electron transfer distance (det) between the radical cation and anion to generate excited states was calculated with a framework of the theory. Kinetically, the electron transfer can take place at det < ∼11 Å in MeCN and det < ∼12 Å in [P2225][TFSI]. The density functional theory (DFT) and time-dependent DFT calculations show that the potential energy curve of the excimer against the distance between the pyrene rings reaches a minimum at 3.50 Å. This suggests that through the electron transfer, the process of the direct formation of the monomer S1 state followed by the excimer formation is more prevailed than that of the direct excimer formation.
Collapse
Affiliation(s)
- Ryoichi Ishimatsu
- Department of Applied Chemistry, Graduate School of Engineering , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Shuya Tashiro
- Department of Applied Chemistry, Graduate School of Engineering , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Takashi Kasahara
- Department of Electrical and Electronic Engineering, Faculty of Science and Engineering , Hosei University , 3-7-2 Kajino-cho , Koganei , Tokyo 184-8584 , Japan
| | - Juro Oshima
- Frontier Materials Research Department, Materials Research Laboratories , Nissan Chemical Corporation , 488-6 Suzumi-cho , Funabashi , Chiba 274-0052 , Japan
| | - Jun Mizuno
- Research Organization for Nano and Life Innovation , Waseda University , 513 Wasedatsurumaki-cho , Shinjuku-ku, Tokyo 162-0041 , Japan
| | - Koji Nakano
- Department of Applied Chemistry, Graduate School of Engineering , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Chihaya Adachi
- Department of Applied Chemistry, Graduate School of Engineering , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Toshihiko Imato
- Department of Applied Chemistry, Graduate School of Engineering , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| |
Collapse
|
24
|
Brahma R, Singh MP, Baruah JB. Stacking among the clips of the poly-aromatic rings of phenazine with hydroxy-aromatics and photophysical properties. RSC Adv 2019; 9:33403-33412. [PMID: 35529104 PMCID: PMC9073320 DOI: 10.1039/c9ra07602f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 10/03/2019] [Indexed: 12/30/2022] Open
Abstract
Clip-like arrangements of molecules in the cocrystals of phenazine with hydroxy-aromatics in their respective self-assemblies and photophysical properties were presented. Phenazine cocrystals with 1,2-dihydroxybenzene provided assembly with butterfly-like arrangements. In these cocrystals, the phenazine molecules occurred in parallel pairs having extensive π-stacking. The clip-like cocrystals with 1,3-dihydroxybenzene also exhibited parallel pairs of phenazine molecules that were parallel cofacial π-stacked. The hydrated cocrystals of phenazine with 1,2,3-trihydroxybenzene had chains of parallel cofacial phenazine rings having three distinguishable π-separation distances among the centroids of the phenazine rings. Also, 2,7-dihydroxynaphthalene formed a clip-like cocrystal with phenazine, which encapsulated an additional molecule of phenazine. This cocrystal also provided chain-like parallel arrangements of the phenazine molecules. The emission and quantum yields of the cocrystals were determined by the integrating sphere method, which indicated that only the cocrystal of phenazine with 2,7-dihydroxynaphthalene showed monomer-like emission of phenazine and the rest of the cocrystals were in a quenched state. In the solution phase, quenching of the emission of hydroxynaphthalene was observed when phenazine was added to an independent solution of 2,7-dihydroxynaphthalene or another hydroxynaphthalene. However, when hydroxybenzenes were added to a solution of phenazine, fluorescence enhancements of phenazine occurred due to photo-electron transfer. π-Stackings control the photoluminescence efficiencies in solids, whereas in solutions, the ON or OFF processes are dependent on the hydroxyaromatics.![]()
Collapse
Affiliation(s)
- Rinki Brahma
- Department of Chemistry, Indian Institute of Technology Guwahati Guwahati 781 039 Assam India
| | - Munendra Pal Singh
- Department of Chemistry, Indian Institute of Technology Guwahati Guwahati 781 039 Assam India
| | - Jubaraj B Baruah
- Department of Chemistry, Indian Institute of Technology Guwahati Guwahati 781 039 Assam India
| |
Collapse
|
25
|
Soft chromophore featured liquid porphyrins and their utilization toward liquid electret applications. Nat Commun 2019; 10:4210. [PMID: 31570713 PMCID: PMC6768991 DOI: 10.1038/s41467-019-12249-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 08/29/2019] [Indexed: 11/12/2022] Open
Abstract
Optoelectronically active viscous liquids are ideal for fabricating foldable/stretchable electronics owing to their excellent deformability and predictable π-unit–based optoelectronic functions, which are independent of the device shape and geometry. Here we show, unprecedented ‘liquid electret’ devices that exhibit mechanoelectrical and electroacoustic functions, as well as stretchability, have been prepared using solvent-free liquid porphyrins. The fluidic nature of the free-base alkylated-tetraphenylporphyrins was controlled by attaching flexible and bulky branched alkyl chains at different positions. Furthermore, a subtle porphyrin ring distortion that originated from the bulkiness of alkyl chains was observed. Its consequences on the electronic perturbation of the porphyrin-unit were precisely elucidated by spectroscopic techniques and theoretical modelling. This molecular design allows shielding of the porphyrin unit by insulating alkyl chains, which facilitates its corona-charged state for a long period under ambient conditions. Though electret materials are attractive for realizing flexible mechanoelectrical devices, these materials are typically solid films. Here, the authors report stretchable ‘liquid-electret’ devices consisting solvent-free liquid porphyrins that show piezoelectric and electroacoustic functionality.
Collapse
|
26
|
Lu F, Neal EA, Nakanishi T. Self-Assembled and Nonassembled Alkylated-Fullerene Materials. Acc Chem Res 2019; 52:1834-1843. [PMID: 31282645 DOI: 10.1021/acs.accounts.9b00217] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Fullerene (C60), a π-conjugated cage molecule consisting of 60 sp2-hybridized carbon atoms that are arranged into perfect icosahedral symmetry, is one of the most extensively studied nanocarbon materials by virtue of its characteristic spherical structure, fascinating optoelectronic properties, and widespread applications in material science. To implement practical applications, C60 is generally used as a building motif to assemble into various ordered superstructures. Unlike the controllable face-to-face π-π interactions of planar π-conjugated molecules, the π-π interactions between the three-dimensional spherical C60 units are random and directionless, which generally lead to complicated aggregated structures and unpredictable properties. The primary target of our research is to produce a robust design strategy for functional C60 materials, by which the single C60 molecules can be engineered into desirable self-organized architectures with optimized functions. To this end, we focused on alkylated fullerene (alk-C60) derivatives, a simple molecular system whose two components, alkyl chains and C60, exhibit both hydrophobicity yet different affinities to organic solvents. As a result, the alk-C60 derivatives present an unusual "hydrophobic amphiphile" system. Through systematic tuning of the substitution pattern of a series of alkyl side chains (number, length, branching, and substitution position) and external experimental conditions, the factors influencing alk-C60 self-assembly behaviors were determined. In addition, the feasibility of forming hybrid coassemblies with alk-C60 and other nanocarbon materials was demonstrated. By taking full advantage of the hydrophobic nature and active optoelectronic properties of these self- or hybrid-assemblies, various superhydrophobic materials and/or optoelectronic devices were developed. However, supported only by weak noncovalent interactions, these ordered superstructures are intrinsically fragile under various external stimuli. To improve the structural stability and achieve consistent optoelectronic performance of these novel materials, we strengthened the ordered structures via metallization and plasticization. Both approaches gave rise to robust and endurable materials with functions inherited from the pristine assemblies but at the cost of their former softness and facile processability. Thereafter, we focused on amorphous materials in view of their consistent and predictable optoelectronic properties that are independent of their geometry and physical environment. Unexpectedly, the amorphous materials obtained were liquids at room temperature, whose excellent deformability might enable applications in flexible/wearable optoelectronic devices. However, the lack of sufficient molecular order impaired their optoelectronic performance. To address this, we devised a straightforward strategy toward the directed ordered self-assembly of the alk-C60 liquids by adding molecular cofactors (n-alkanes or C60) into the liquids. Using this strategy, the balance between intermolecular order and material softness can be readily adjusted to meet different application requirements. Through iterative refinements to our novel alk-C60 system, we have demonstrated its power in generating numerous self-assembled, hybrid-assembled, and nonassembled materials toward versatile applications. We believe such a comprehensive description of these alk-C60-based functional materials provides deep insights into these still-evolving materials, which will underpin more advanced applications in near future.
Collapse
Affiliation(s)
- Fengniu Lu
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Edward A. Neal
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Takashi Nakanishi
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan
| |
Collapse
|
27
|
Enozawa H, Ukai S, Ito H, Murata T, Morita Y. Colored Ionic Liquid Based on Stable Polycyclic Anion Salt Showing Halochromism with HCl Vapor. Org Lett 2019; 21:2161-2165. [PMID: 30896176 DOI: 10.1021/acs.orglett.9b00468] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A sodium salt of a polycyclic trioxotriangulene (TOT) anion with six triethylene glycol chains exhibiting the formation of a colored ionic liquid at room temperature was synthesized. The ionic liquid is air- and water-stable, reflecting thermodynamic stabilization of a charge-delocalized TOT anion. Upon protonation of the TOT anion, the salt shows halochromic behaviors in solution and even in the neat liquid state with HCl vapor. The ionic liquid shows no morphological change with the chromism, presumably as a result of poor intermolecular interactions between π skeletons.
Collapse
Affiliation(s)
- Hideo Enozawa
- Department of Applied Chemistry, Faculty of Engineering , Aichi Institute of Technology , Toyota , Aichi 470-0392 , Japan
| | - Shusaku Ukai
- Department of Applied Chemistry, Faculty of Engineering , Aichi Institute of Technology , Toyota , Aichi 470-0392 , Japan
| | - Hiroshi Ito
- Department of Applied Chemistry, Faculty of Engineering , Aichi Institute of Technology , Toyota , Aichi 470-0392 , Japan
| | - Tsuyoshi Murata
- Department of Applied Chemistry, Faculty of Engineering , Aichi Institute of Technology , Toyota , Aichi 470-0392 , Japan
| | - Yasushi Morita
- Department of Applied Chemistry, Faculty of Engineering , Aichi Institute of Technology , Toyota , Aichi 470-0392 , Japan
| |
Collapse
|
28
|
Isoda K, Ishiyama T, Mutoh Y, Matsukuma D. Stimuli-Responsive Room-Temperature N-Heteroacene Liquid: In Situ Observation of the Self-Assembling Process and Its Multiple Properties. ACS APPLIED MATERIALS & INTERFACES 2019; 11:12053-12062. [PMID: 30816691 DOI: 10.1021/acsami.8b21695] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A novel stimuli-responsive room-temperature photoluminescent liquid 1 based on the N-heteroacene framework is developed and analyzed by several experiments such as differential scanning calorimetry, X-ray diffraction, dynamic viscoelasticity measurement, in situ observation by optical and polarized optical microscopes, UV-vis absorption and fluorescence spectroscopy, and by theoretical methods such as ab initio calculation and molecular dynamics (MD) computer simulation techniques. In contrast to stimuli-responsive solid materials reported previously, liquid 1 in response to HCl vapor as a single stimulus can involve dramatically multiple changes in physical properties such as rheological behavior, morphology, as well as photoluminescence. The present ab initio calculation and microsecond-timescale MD simulations reveal that the complexation of 1 and HCl molecules induces a large dipole moment, leading to the formation of stacking structures because of their dipole-dipole interaction. Upon exposure to HCl vapor, in situ microscopic observation of the stimuli-responsive liquid elucidates a self-assembling process involving the formation of the wrinkle structure in a micrometer scale, indicating disorder-order phase transition. Further exposure of 1 to HCl vapor from seconds to hours has an influence on the macroscopic physical properties such as viscosity, viscoelasticity, and photoluminescent colors. The synergy between the experimental and theoretical investigations opens a new strategy to develop a novel class of stimuli-responsive materials showing multiple changes in physical properties.
Collapse
Affiliation(s)
- Kyosuke Isoda
- Faculty of Engineering and Design , Kagawa University , 2217-20 Hayashi-cho , Takamatsu , Kagawa 761-0396 , Japan
- Health Research Institute , National Institute of Advanced Industrial Science and Technology (AIST) , 2217-14 Hayashi-cho , Takamatsu , Kagawa 761-0395 , Japan
| | - Tatsuya Ishiyama
- Department of Applied Chemistry, Graduate School of Science and Engineering , University of Toyama , 3190 Gofuku , Toyama 930-8555 , Japan
| | | | | |
Collapse
|
29
|
Kushwaha K, Yu L, Stranius K, Singh SK, Hultmark S, Iqbal MN, Eriksson L, Johnston E, Erhart P, Müller C, Börjesson K. A Record Chromophore Density in High-Entropy Liquids of Two Low-Melting Perylenes: A New Strategy for Liquid Chromophores. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1801650. [PMID: 30828534 PMCID: PMC6382313 DOI: 10.1002/advs.201801650] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 11/22/2018] [Indexed: 05/23/2023]
Abstract
Liquid chromophores constitute a rare but intriguing class of molecules that are in high demand for the design of luminescent inks, liquid semiconductors, and solar energy storage materials. The most common way to achieve liquid chromophores involves the introduction of long alkyl chains, which, however, significantly reduces the chromophore density. Here, strategy is presented that allows for the preparation of liquid chromophores with a minimal increase in molecular weight, using the important class of perylenes as an example. Two synergistic effects are harnessed: (1) the judicious positioning of short alkyl substituents, and (2) equimolar mixing, which in unison results in a liquid material. A series of 1-alkyl perylene derivatives is synthesized and it is found that short ethyl or butyl chains reduce the melting temperature from 278 °C to as little as 70 °C. Then, two low-melting derivatives are mixed, which results in materials that do not crystallize due to the increased configurational entropy of the system. As a result, liquid chromophores with the lowest reported molecular weight increase compared to the neat chromophore are obtained. The mixing strategy is readily applicable to other π-conjugated systems and, hence, promises to yield a wide range of low molecular weight liquid chromophores.
Collapse
Affiliation(s)
- Khushbu Kushwaha
- Department of Chemistry and Molecular BiologyUniversity of GothenburgKemigården 441296GothenburgSweden
| | - Liyang Yu
- Department of Chemistry and Chemical EngineeringChalmers University of Technology41296GothenburgSweden
| | - Kati Stranius
- Department of Chemistry and Molecular BiologyUniversity of GothenburgKemigården 441296GothenburgSweden
| | - Sandeep Kumar Singh
- Department of PhysicsMaterials and Surface Theory DivisionChalmers University of Technology41296GothenburgSweden
| | - Sandra Hultmark
- Department of Chemistry and Chemical EngineeringChalmers University of Technology41296GothenburgSweden
| | - Muhammad Naeem Iqbal
- Department of Materials and Environmental ChemistryStockholm UniversityStockholmSweden
| | - Lars Eriksson
- Department of Materials and Environmental ChemistryStockholm UniversityStockholmSweden
| | - Eric Johnston
- Sigrid Therapeutics ABSankt Göransgatan 159112 17StockholmSweden
| | - Paul Erhart
- Department of PhysicsMaterials and Surface Theory DivisionChalmers University of Technology41296GothenburgSweden
| | - Christian Müller
- Department of Chemistry and Chemical EngineeringChalmers University of Technology41296GothenburgSweden
| | - Karl Börjesson
- Department of Chemistry and Molecular BiologyUniversity of GothenburgKemigården 441296GothenburgSweden
| |
Collapse
|
30
|
Goudappagouda, Manthanath A, Wakchaure VC, Ranjeesh KC, Das T, Vanka K, Nakanishi T, Babu SS. Paintable Room-Temperature Phosphorescent Liquid Formulations of Alkylated Bromonaphthalimide. Angew Chem Int Ed Engl 2019; 58:2284-2288. [PMID: 30548525 DOI: 10.1002/anie.201811834] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/11/2018] [Indexed: 01/20/2023]
Abstract
Organic phosphors have been widely explored with an understanding that crystalline molecular ordering is a requisite for enhanced intersystem crossing. In this context, we explored the room-temperature phosphorescence features of a solvent-free organic liquid phosphor in air. While alkyl chain substitution varied the physical states of the bromonaphthalimides, the phosphorescence remained unaltered for the solvent-free liquid in air. As the first report, a solvent-free liquid of a long swallow-tailed bromonaphthalimide exhibits room-temperature phosphorescence in air. Doping of the phosphor with carbonyl guests resulted in enhanced phosphorescence, and hence a large-area paintable phosphorescent liquid composite with improved lifetime and quantum yield was developed.
Collapse
Affiliation(s)
- Goudappagouda
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-, 411008, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | | | - Vivek Chandrakant Wakchaure
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-, 411008, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Kayaramkodath Chandran Ranjeesh
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-, 411008, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Tamal Das
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.,Physical and Materials Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-, 411008, India
| | - Kumar Vanka
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.,Physical and Materials Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-, 411008, India
| | - Takashi Nakanishi
- Frontier Molecules Group, International Centre for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan
| | - Sukumaran Santhosh Babu
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-, 411008, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| |
Collapse
|
31
|
Synthesis of Furan-Substituted N-Heteroacene-Based Liquid Material and Its Acid-Recognizing Behavior. CRYSTALS 2019. [DOI: 10.3390/cryst9010051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, we synthesized a novel N-heteroacene-based liquid material 6,7-bis(3,7,11-trimethyl-1-dodecyloxy)-2,3-difurylquinoxaline (RPNL 1), containing two furan rings. We revealed that RPNL 1 adopted a disordered liquid at 25 ∘ C, determined by polarized optical microscopic observation, differential scanning calorimetry, and X-ray diffraction measurements. The fluorescent spectrum measurement revealed that RPNL 1 showed a blue emission at 25 ∘ C. Dissolving benzene sulfonic acid (BSA) in RPNL 1 brought about dramatic changes in its physical properties, such as emission colors, as well as sample states. Upon recognizing BSA, photoluminescent color was changed into orange, as well as phase transition occurred from liquid to a liquid-crystalline phase. RPNL 1 can function as an acid-recognizing material, accompanied with the color changes in emission.
Collapse
|
32
|
Ogoshi T, Maruyama K, Sakatsume Y, Kakuta T, Yamagishi TA, Ichikawa T, Mizuno M. Guest Vapor-Induced State Change of Structural Liquid Pillar[6]arene. J Am Chem Soc 2019; 141:785-789. [DOI: 10.1021/jacs.8b12253] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomoki Ogoshi
- JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | | | | | | | | | - Takahiro Ichikawa
- JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Department of Biotechnology, Faculty of Engineering, Tokyo University of Agriculture and Technology, Nakacho, Koganei, Tokyo 184-8588, Japan
| | | |
Collapse
|
33
|
L’Her M, Atoini Y, Fouchet J, Heinrich B, Del-Giudice N, Scrafton E, Bordes E, Karmazin L, Charbonière L, De Cola L, Douce L. Luminescent imidazolium–naphthalene salts in liquid and solid states. NEW J CHEM 2019. [DOI: 10.1039/c9nj02972a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article describes highly luminescent ionic compounds in liquid and crystalline states, where a naphthalene moiety is conjugated to an imidazolium center decorated with two different lengths of alkyl chains.
Collapse
|
34
|
Lu F, Jang K, Osica I, Hagiwara K, Yoshizawa M, Ishii M, Chino Y, Ohta K, Ludwichowska K, Kurzydłowski KJ, Ishihara S, Nakanishi T. Supercooling of functional alkyl-π molecular liquids. Chem Sci 2018; 9:6774-6778. [PMID: 30294417 PMCID: PMC6166271 DOI: 10.1039/c8sc02723d] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 07/16/2018] [Indexed: 12/19/2022] Open
Abstract
Metastable states of soft matters are extensively used in designing stimuli-responsive materials. However, the non-steady properties may obstruct consistent performance. Here we report an approach to eradicate the indistinguishable metastable supercooled state of functional molecular liquids (FMLs), which remains as a liquid for weeks or months before crystallizing, via rational molecular design. The phases (solid, kinetically stable liquid, and supercooled liquid) of a model FML, branched alkyl chain-substituted 9,10-diphenylanthracene (DPA), are found to be governed by subtle alterations of the molecular structure (alkyl-DPA ratio and bulkiness of the DPA unit). We thus outline molecular design principles to avoid supercooled FML formation. Moreover, we demonstrate a practical technique to rapidly discriminate supercooled FMLs (within 5 h) by accelerating their crystallization in differential scanning calorimetry heating via pre-annealing or relatively slow scanning.
Collapse
Affiliation(s)
- Fengniu Lu
- International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science (NIMS) , 1-1 Namiki , Tsukuba 305-0044 , Japan .
| | - Keumhee Jang
- International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science (NIMS) , 1-1 Namiki , Tsukuba 305-0044 , Japan .
| | - Izabela Osica
- Materials Design Division , Faculty of Materials Science and Engineering , Warsaw University of Technology , Woloska 141 , 02-507 Warsaw , Poland
| | - Keita Hagiwara
- Laboratory for Chemistry and Life Science , Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsuta , Midori-ku , Yokohama 226-8503 , Japan
| | - Michito Yoshizawa
- Laboratory for Chemistry and Life Science , Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsuta , Midori-ku , Yokohama 226-8503 , Japan
| | - Masashi Ishii
- Materials Data Platform Center , Research and Services Division of Materials Data and Integrated System (MaDIS) , NIMS , 1-2-1 Sengen , Tsukuba 305-0047 , Japan
| | - Yoshiaki Chino
- Smart Material Science and Technology , Interdisciplinary Graduate School of Science and Technology , Shinshu University , 1-15-1 Tokida , Ueda 386-8567 , Japan
| | - Kazuchika Ohta
- Smart Material Science and Technology , Interdisciplinary Graduate School of Science and Technology , Shinshu University , 1-15-1 Tokida , Ueda 386-8567 , Japan
| | - Kinga Ludwichowska
- Materials Design Division , Faculty of Materials Science and Engineering , Warsaw University of Technology , Woloska 141 , 02-507 Warsaw , Poland
| | - Krzysztof Jan Kurzydłowski
- Materials Design Division , Faculty of Materials Science and Engineering , Warsaw University of Technology , Woloska 141 , 02-507 Warsaw , Poland
| | - Shinsuke Ishihara
- International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science (NIMS) , 1-1 Namiki , Tsukuba 305-0044 , Japan .
| | - Takashi Nakanishi
- International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science (NIMS) , 1-1 Namiki , Tsukuba 305-0044 , Japan .
| |
Collapse
|
35
|
Okamoto K, Lu F, Nakanishi T. Posttreatment Technique for SN2 Alkylation of Aromatics with Alkyl Halides: Aiming toward Large-Scale Synthesis of Building Blocks for Soft π-Molecular Materials. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180075] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ken Okamoto
- Frontier Molecules Group, International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Engineering for Future Innovation, Division of Chemical Engineering and Biotechnology, National Institute of Technology, Ichinoseki College, Takanashi, Hagisho, Ichinoseki, Iwate 021-8511, Japan
| | - Fengniu Lu
- Frontier Molecules Group, International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takashi Nakanishi
- Frontier Molecules Group, International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| |
Collapse
|
36
|
Sato Y, Mutoh Y, Matsukuma D, Nakagawa M, Kawai T, Isoda K. Tuning the Electronic Properties and Acid-Response Behavior of N-Heteroacene-Based π-Conjugated Liquids by Changing the Number of π-Conjugated Substituents. Chem Asian J 2018; 13:2619-2625. [DOI: 10.1002/asia.201800631] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 06/15/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Yuika Sato
- Department of Advanced Materials Science; Faculty of Engineering; Kagawa University; 2217-20 Hayashi-cho Takamatsu Kagawa 761-0396 Japan
| | - Yuichiro Mutoh
- Department of Chemistry; Faculty of Science; Tokyo University of Science; 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
| | - Daisuke Matsukuma
- Department of Applied Chemistry, Faculty of Science Division I; Tokyo University of Science; 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
| | - Makoto Nakagawa
- Department of Industrial Chemistry; Tokyo University of Science; 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
| | - Takeshi Kawai
- Department of Industrial Chemistry; Tokyo University of Science; 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
| | - Kyosuke Isoda
- Department of Advanced Materials Science; Faculty of Engineering; Kagawa University; 2217-20 Hayashi-cho Takamatsu Kagawa 761-0396 Japan
| |
Collapse
|
37
|
Takaya T, Oda T, Shibazaki Y, Hayashi Y, Shimomoto H, Ihara E, Ishibashi Y, Asahi T, Iwata K. Excited-State Dynamics of Pyrene Incorporated into Poly(substituted methylene)s: Effects of Dense Packing of Pyrenes on Excimer Formation. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01060] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Tomohisa Takaya
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Tatsuya Oda
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Yuki Shibazaki
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Yumiko Hayashi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Hiroaki Shimomoto
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Eiji Ihara
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Yukihide Ishibashi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Tsuyoshi Asahi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Koichi Iwata
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| |
Collapse
|
38
|
Zielinska A, Takai A, Sakurai H, Saeki A, Leonowicz M, Nakanishi T. A Spin-Active, Electrochromic, Solvent-Free Molecular Liquid Based on Double-Decker Lutetium Phthalocyanine Bearing Long Branched Alkyl Chains. Chem Asian J 2018; 13:770-774. [DOI: 10.1002/asia.201800175] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Agnieszka Zielinska
- Frontier Molecules Group, International Center for Materials Nanoarchitectonics (WPI-MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
- Warsaw University of Technology; ul. Wołoska 141 Warsaw 02-507 Poland
| | - Atsuro Takai
- Frontier Molecules Group, International Center for Materials Nanoarchitectonics (WPI-MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Hiroya Sakurai
- Frontier Molecules Group, International Center for Materials Nanoarchitectonics (WPI-MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Akinori Saeki
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; 2-1 Yamadaoka Suita Osaka 565-0871 Japan
| | - Marcin Leonowicz
- Warsaw University of Technology; ul. Wołoska 141 Warsaw 02-507 Poland
| | - Takashi Nakanishi
- Frontier Molecules Group, International Center for Materials Nanoarchitectonics (WPI-MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| |
Collapse
|
39
|
Shakirova JR, Shimada M, Olisov DA, Starova GL, Nishihara H, Tunik SP. Dinuclear Diphosphine Complexes of Gold(I) Alkynyls, the Effects of Alkynyl Substituents onto Photophysical Behavior. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201700415] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Julia R. Shakirova
- Institute of Chemistry; St. Petersburg State University; 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Masaki Shimada
- Department of Chemistry; School of Science; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku 113-0033 Tokyo Japan
| | - Dmitrii A. Olisov
- Institute of Chemistry; St. Petersburg State University; 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Galina L. Starova
- Institute of Chemistry; St. Petersburg State University; 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Hiroshi Nishihara
- Department of Chemistry; School of Science; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku 113-0033 Tokyo Japan
| | - Sergey P. Tunik
- Institute of Chemistry; St. Petersburg State University; 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| |
Collapse
|
40
|
Emission of Pyrene Connected to Benzothiazole Unit via Resonance and Intramolecular Charge Transfer. ChemistrySelect 2018. [DOI: 10.1002/slct.201702865] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
41
|
Narayan B, Nagura K, Takaya T, Iwata K, Shinohara A, Shinmori H, Wang H, Li Q, Sun X, Li H, Ishihara S, Nakanishi T. The effect of regioisomerism on the photophysical properties of alkylated-naphthalene liquids. Phys Chem Chem Phys 2018; 20:2970-2975. [DOI: 10.1039/c7cp05584f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Novel alkylated naphthalene liquids with a correlation among the 1- and 2-regioisomeric chemical structures and their photophysical, calorimetric and rheological properties are presented.
Collapse
|
42
|
Lu F, Kitamura N, Takaya T, Iwata K, Nakanishi T, Kurashige Y. Experimental and theoretical investigation of fluorescence solvatochromism of dialkoxyphenyl-pyrene molecules. Phys Chem Chem Phys 2018; 20:3258-3264. [DOI: 10.1039/c7cp06811e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The uncommon fluorescence solvatochromic behaviour of dialkoxyphenyl-pyrene isomers was confirmed by experiments and elucidated by quantum chemical calculations.
Collapse
Affiliation(s)
- Fengniu Lu
- Frontier Molecules Group
- International Center for Materials Nanoarchitectonics (WPI-MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba 305-0044
- Japan
| | - Naoki Kitamura
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kitashirakawa Oiwake-cho
- Sakyo-ku
| | - Tomohisa Takaya
- Department of Chemistry
- Faculty of Science
- Gakushuin University
- Toshima-ku
- Japan
| | - Koichi Iwata
- Department of Chemistry
- Faculty of Science
- Gakushuin University
- Toshima-ku
- Japan
| | - Takashi Nakanishi
- Frontier Molecules Group
- International Center for Materials Nanoarchitectonics (WPI-MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba 305-0044
- Japan
| | - Yuki Kurashige
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kitashirakawa Oiwake-cho
- Sakyo-ku
| |
Collapse
|
43
|
Chino Y, Ghosh A, Nakanishi T, Kobayashi N, Ohta K, Kimura M. Stimuli-responsive Rheological Properties for Liquid Phthalocyanines. CHEM LETT 2017. [DOI: 10.1246/cl.170672] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yoshiaki Chino
- Department of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567
| | - Avijit Ghosh
- Frontier Molecules Group, International Center for Materials and Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044
| | - Takashi Nakanishi
- Frontier Molecules Group, International Center for Materials and Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044
| | - Nagao Kobayashi
- Department of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567
| | - Kazuchika Ohta
- Department of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567
| | - Mutsumi Kimura
- Department of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567
| |
Collapse
|
44
|
Qian Z, Deng W, Zhang X, Miao H, Zhang G. How side-chain substituents and substrates influence mechanochromic luminescence: case study with pyrene. RSC Adv 2017. [DOI: 10.1039/c7ra09453a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Many organic molecules exhibit reversible, force-induced emission change known as mechanochromic luminescence (ML) and can potentially be used as mechanosensors.
Collapse
Affiliation(s)
- Zongzheng Qian
- Hefei National Laboratory for Physical Sciences at the Microscale
- University of Science and Technology of China
- Hefei
- China
| | - Weiting Deng
- Hefei National Laboratory for Physical Sciences at the Microscale
- University of Science and Technology of China
- Hefei
- China
| | - Xuepeng Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale
- University of Science and Technology of China
- Hefei
- China
| | - Hui Miao
- Hefei National Laboratory for Physical Sciences at the Microscale
- University of Science and Technology of China
- Hefei
- China
| | - Guoqing Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale
- University of Science and Technology of China
- Hefei
- China
| |
Collapse
|
45
|
Ghosh A, Nakanishi T. Frontiers of solvent-free functional molecular liquids. Chem Commun (Camb) 2017; 53:10344-10357. [DOI: 10.1039/c7cc05883g] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The breakthrough of functional molecular liquids (FMLs) in cutting-edge research and their fundamental liquid features on the basis of molecular architectures are highlighted in this Feature Article.
Collapse
Affiliation(s)
- Avijit Ghosh
- International Center for Materials Nanoarchitectonics (WPI-MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba 305-0044
- Japan
| | - Takashi Nakanishi
- International Center for Materials Nanoarchitectonics (WPI-MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba 305-0044
- Japan
| |
Collapse
|