1
|
Liang R, Xiong W, Lo KC, Ho PY, Bai X, Lai W, Chan WK, Du L, Phillips DL. Revealing the Photophysical Dynamics of Selected Rigid Donor-Acceptor Systems: From Ligands to Ruthenium(II) Complexes. J Phys Chem Lett 2021; 12:10927-10935. [PMID: 34734732 DOI: 10.1021/acs.jpclett.1c03122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Newly designed push-pull ligands (L1 and L2) with bithiophene (bth) as a donor and phenazine (phz) or quinoxalino[2,3-b]quinoxaline (qxq) as acceptors were synthesized and also incorporated with a bipyridyl Ru(II) complex to give Ru1 and Ru2, respectively. The ultrafast photophysical dynamics of the ligand and their respective Ru(II) complexes were well-characterized using time-resolved spectroscopies and quantum chemical calculations. Photoinduced charger transfer (CT) and intersystem crossing (ISC) processes were directly observed for L1 and L2. In addition, the interplay of three different triplet excited states was directly observed in the related Ru(II) complexes. The lowest-lying triplet excited states of the ligands and their respective Ru(II) complexes were both attributed to the CT transitions from donor (bth) to acceptor (phz or qxq) and result in 3ICT (intramolecular charge transfer) and 3ILCT (intraligand charge transfer) excited states, respectively. The lifetimes of the lowest-lying triplet excited states of L1, L2, Ru1, and Ru2 were measured to be 21.3, 50.4, 2.75, and 4.16 μs, respectively.
Collapse
Affiliation(s)
- Runhui Liang
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, China
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Wenjuan Xiong
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Kin Cheung Lo
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Po Yuen Ho
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Xueqin Bai
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Wenquan Lai
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Wai Kin Chan
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Lili Du
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, China
| | - David Lee Phillips
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
- Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Hong Kong, China
| |
Collapse
|
2
|
Vallan L, Istif E, Gómez IJ, Alegret N, Mantione D. Thiophene-Based Trimers and Their Bioapplications: An Overview. Polymers (Basel) 2021; 13:1977. [PMID: 34208624 PMCID: PMC8234281 DOI: 10.3390/polym13121977] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/11/2021] [Accepted: 06/12/2021] [Indexed: 01/15/2023] Open
Abstract
Certainly, the success of polythiophenes is due in the first place to their outstanding electronic properties and superior processability. Nevertheless, there are additional reasons that contribute to arouse the scientific interest around these materials. Among these, the large variety of chemical modifications that is possible to perform on the thiophene ring is a precious aspect. In particular, a turning point was marked by the diffusion of synthetic strategies for the preparation of terthiophenes: the vast richness of approaches today available for the easy customization of these structures allows the finetuning of their chemical, physical, and optical properties. Therefore, terthiophene derivatives have become an extremely versatile class of compounds both for direct application or for the preparation of electronic functional polymers. Moreover, their biocompatibility and ease of functionalization make them appealing for biology and medical research, as it testifies to the blossoming of studies in these fields in which they are involved. It is thus with the willingness to guide the reader through all the possibilities offered by these structures that this review elucidates the synthetic methods and describes the full chemical variety of terthiophenes and their derivatives. In the final part, an in-depth presentation of their numerous bioapplications intends to provide a complete picture of the state of the art.
Collapse
Affiliation(s)
- Lorenzo Vallan
- Laboratoire de Chimie des Polymères Organiques (LCPO—UMR 5629), Université de Bordeaux, Bordeaux INP, CNRS F, 33607 Pessac, France;
| | - Emin Istif
- Department of Mechanical Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul 34450, Turkey;
| | - I. Jénnifer Gómez
- Department of Condensed Matter Physics, Faculty of Science, Masaryk University, 61137 Brno, Czech Republic;
| | - Nuria Alegret
- POLYMAT and Departamento de Química Aplicada, University of the Basque Country, UPV/EHU, 20018 Donostia-San Sebastián, Spain
| | - Daniele Mantione
- Department of Mechanical Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul 34450, Turkey;
| |
Collapse
|
3
|
Yuan Y, Lo KC, Szeto L, Chan WK. Synthesis of Pyrazinopyrazine-Fused Azaacenes through Direct Condensation Reactions between Quinoxalinediamine and Diketones. J Org Chem 2020; 85:6372-6379. [PMID: 32312048 DOI: 10.1021/acs.joc.9b03504] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the synthesis of a new type of pyrazinopyrazine-fused azaacene molecules by a simple and versatile procedure. 6,9-Dihexyldithieno[3,2-f:2',3'-h]quinoxaline-2,3-diamine was synthesized through the condensation between 2,7-dihexylbenzo[1,2-b:6,5-b']dithiophene-4,5-diamine and bis(2,2,2-trifluoroethyl) oximidate. A series of derivatized molecules with extended two-dimensional aromatic fused-ring structures could be obtained by simple condensation reactions between the quinoxalinediamine intermediate and various diketones. The reaction was proved to be effective for the construction of tetrazaacene derivatives with extended heterocyclic aromatic ring systems. The molecules obtained exhibit low-lying LUMO levels that can be fine-tuned by modifying the molecular structure. Crystallographic results showed that in a solid state, the molecules form "brick wall" structures with a close π-π stacking mode. The stacking between the π-ring systems in the molecules could be further enhanced by expanding the large 2D planar-conjugated structure.
Collapse
Affiliation(s)
- Yuping Yuan
- Department of Chemistry, the University of Hong Kong, Pokfulam Road, Hong Kong SAR 999077, China
| | - Kin-Cheung Lo
- Department of Chemistry, the University of Hong Kong, Pokfulam Road, Hong Kong SAR 999077, China
| | - Lap Szeto
- Department of Chemistry, the University of Hong Kong, Pokfulam Road, Hong Kong SAR 999077, China
| | - Wai-Kin Chan
- Department of Chemistry, the University of Hong Kong, Pokfulam Road, Hong Kong SAR 999077, China
| |
Collapse
|
4
|
Hau KI, Lo KC, Xiong W, Du L, Chan WK. Synthesis of Metallo-conjugated Copolymer with Electron Deficient Main Chain and the Formation of Polymer–Carbon Nanotube Hybrids. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-019-01319-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
5
|
Lee SH, Valverde Paredes MS, Rappenecker TJ, Robins KA, Lee DC. Optimized synthesis of thermally stable axially modified pyrazine-acene nanoribbon with gelation properties. NEW J CHEM 2020. [DOI: 10.1039/c9nj06303j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A comprehensive synthesis study to axially modify N-heteroacene nanoribbon and its outstanding thermal and one-dimensional assembly properties.
Collapse
Affiliation(s)
- Sae Hui Lee
- Department of Chemistry & Biochemistry
- University of Nevada, Las Vegas
- Las Vegas
- USA
| | | | | | - Kathleen A. Robins
- Department of Chemistry & Biochemistry
- University of Nevada, Las Vegas
- Las Vegas
- USA
| | - Dong-Chan Lee
- Department of Chemistry & Biochemistry
- University of Nevada, Las Vegas
- Las Vegas
- USA
| |
Collapse
|
6
|
Kumar A, Ananthakrishnan R, Jana G, Chattaraj PK, Nayak S, Ghosh SK. An Intramolecular Charge Transfer Induced Fluorescent Chemosensor for Selective Detection of Mercury (II) and its Self‐Turn‐On Inside Live Cells at Physiological pH. ChemistrySelect 2019. [DOI: 10.1002/slct.201900375] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Alok Kumar
- Department of chemistry, Environmental Materials and Analytical Chemistry LaboratoryIndian Institute of Technology Kharagpur 721302 India
| | - Rajakumar Ananthakrishnan
- Department of chemistry, Environmental Materials and Analytical Chemistry LaboratoryIndian Institute of Technology Kharagpur 721302 India
| | - Gourhari Jana
- Department of chemistryCenter for Theoretical StudiesIndian Institute of Technology Kharagpur Kharagpur-721302 India
| | - Pratim K. Chattaraj
- Department of chemistryCenter for Theoretical StudiesIndian Institute of Technology Kharagpur Kharagpur-721302 India
| | - Santoshi Nayak
- Department of BiotechnologyIndian Institute of Technology, Kharagpur Kharagpur-721302 India
| | - Sudip K. Ghosh
- Department of BiotechnologyIndian Institute of Technology, Kharagpur Kharagpur-721302 India
| |
Collapse
|
7
|
Lo KC, Hau KI, Chan WK. Photoconductivity enhancement and charge transport properties in ruthenium-containing block copolymer/carbon nanotube hybrids. NANOSCALE 2018; 10:6474-6486. [PMID: 29569662 DOI: 10.1039/c7nr09670d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Functional polymer/carbon nanotube (CNT) hybrid materials can serve as a good model for light harvesting systems based on CNTs. This paper presents the synthesis of block copolymer/CNT hybrids and the characterization of their photocurrent responses by both experimental and computational approaches. A series of functional diblock copolymers was synthesized by reversible addition-fragmentation chain transfer polymerizations for the dispersion and functionalization of CNTs. The block copolymers contain photosensitizing ruthenium complexes and modified pyrene-based anchoring units. The photocurrent responses of the polymer/CNT hybrids were measured by photoconductive atomic force microscopy (PCAFM), from which the experimental data were analyzed by vigorous statistical models. The difference in photocurrent response among different hybrids was correlated to the conformations of the hybrids, which were elucidated by molecular dynamics simulations, and the electronic properties of polymers. The photoresponse of the block copolymer/CNT hybrids can be enhanced by introducing an electron-accepting block between the photosensitizing block and the CNT. We have demonstrated that the application of a rigorous statistical methodology can unravel the charge transport properties of these hybrid materials and provide general guidelines for the design of molecular light harvesting systems.
Collapse
Affiliation(s)
- Kin Cheung Lo
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong.
| | - King In Hau
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong.
| | - Wai Kin Chan
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong.
| |
Collapse
|
8
|
de Echegaray P, Mancheño MJ, Arrechea-Marcos I, Juárez R, López-Espejo G, López Navarrete JT, Ramos MM, Seoane C, Ortiz RP, Segura JL. Synthesis of Perylene Imide Diones as Platforms for the Development of Pyrazine Based Organic Semiconductors. J Org Chem 2016; 81:11256-11267. [PMID: 27791365 DOI: 10.1021/acs.joc.6b02214] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
There is a great interest in peryleneimide (PI)-containing compounds given their unique combination of good electron accepting ability, high abosorption in the visible region, and outstanding chemical, thermal, and photochemical stabilities. Thus, herein we report the synthesis of perylene imide derivatives endowed with a 1,2-diketone functionality (PIDs) as efficient intermediates to easily access peryleneimide (PI)-containing organic semiconductors with enhanced absorption cross-section for the design of tunable semiconductor organic materials. Three processable organic molecular semiconductors containing thiophene and terthiophene moieties, PITa, PITb, and PITT, have been prepared from the novel PIDs. The tendency of these semiconductors for molecular aggregation have been investigated by NMR spectroscopy and supported by quantum chemical calculations. 2D NMR experiments and theoretical calculations point to an antiparallel π-stacking interaction as the most stable conformation in the aggregates. Investigation of the optical and electrochemical properties of the materials is also reported and analyzed in combination with DFT calculations. Although the derivatives presented here show modest electron mobilities of ∼10-4 cm2V-1s-1, these preliminary studies of their performance in organic field effect transistors (OFETs) indicate the potential of these new building blocks as n-type semiconductors.
Collapse
Affiliation(s)
- Paula de Echegaray
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid , 28040 Madrid, Spain
| | - María J Mancheño
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid , 28040 Madrid, Spain
| | - Iratxe Arrechea-Marcos
- Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga , 29071 Málaga, Spain
| | - Rafael Juárez
- Departamento de Tecnología Química y Ambiental, Universidad Rey Juan Carlos , Madrid 28933, Spain
| | - Guzmán López-Espejo
- Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga , 29071 Málaga, Spain
| | | | - María Mar Ramos
- Departamento de Tecnología Química y Ambiental, Universidad Rey Juan Carlos , Madrid 28933, Spain
| | - Carlos Seoane
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid , 28040 Madrid, Spain
| | - Rocío Ponce Ortiz
- Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga , 29071 Málaga, Spain
| | - José L Segura
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid , 28040 Madrid, Spain
| |
Collapse
|
9
|
Zhang K, Xu XH, Qing FL. Copper-Promoted Ritter-Type Trifluoroethoxylation of (Hetero)arenediazonium Tetrafluoroborates: A Method for the Preparation of Trifluoroethyl Imidates. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600941] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Ke Zhang
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; 2999 North Renmin Lu 201620 Shanghai P. R. China
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Science; 345 Lingling Lu 200032 Shanghai P. R. China
| | - Feng-Ling Qing
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; 2999 North Renmin Lu 201620 Shanghai P. R. China
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Science; 345 Lingling Lu 200032 Shanghai P. R. China
| |
Collapse
|
10
|
Sherbow TJ, Carr CR, Saisu T, Fettinger JC, Berben LA. Insight into Varied Reaction Pathways for O–H and N–H Bond Activation by Bis(imino)pyridine Complexes of Al(III). Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00743] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Tobias J. Sherbow
- Department of Chemistry, University of California, Davis, Davis, California 95615, United States
| | - Cody R. Carr
- Department of Chemistry, University of California, Davis, Davis, California 95615, United States
| | - Tomoya Saisu
- Department of Chemistry, University of California, Davis, Davis, California 95615, United States
| | - James C. Fettinger
- Department of Chemistry, University of California, Davis, Davis, California 95615, United States
| | - Louise A. Berben
- Department of Chemistry, University of California, Davis, Davis, California 95615, United States
| |
Collapse
|
11
|
Sun L, Zhang F, Wang X, Qiu F, Xue M, Tregnago G, Cacialli F, Osella S, Beljonne D, Feng X. Geometric and Electronic Structures of Boron(III)-Cored Dyes Tailored by Incorporation of Heteroatoms into Ligands. Chem Asian J 2015; 10:709-14. [DOI: 10.1002/asia.201403272] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 12/20/2014] [Indexed: 11/06/2022]
|