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Kim TH, Lee JH, Jang MH, Lee GM, Shim ES, Oh S, Saeed MA, Lee MJ, Yu BS, Hwang DK, Park CW, Lee SY, Jo JW, Shim JW. Atto-Scale Noise Near-Infrared Organic Photodetectors Enabled by Controlling Interfacial Energetic Offset through Enhanced Anchoring Ability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2403647. [PMID: 38708960 DOI: 10.1002/adma.202403647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/23/2024] [Indexed: 05/07/2024]
Abstract
The near-infrared (NIR) sensor technology is crucial for various applications such as autonomous driving and biometric tracking. Silicon photodetectors (SiPDs) are widely used in NIR applications; however, their scalability is limited by their crystalline properties. Organic photodetectors (OPDs) have attracted attention for NIR applications owing to their scalability, low-temperature processing, and notably low dark current density (JD), which is similar to that of SiPDs. However, the still high JD (at NIR band) and few measurements of noise equivalent powers (NEPs) pose challenges for accurate performance comparisons. This study addresses these issues by quantitatively characterizing the performance matrix and JD generation mechanism using electron-blocking layers (EBLs) in OPDs. The energy offset at an EBL/photosensitive layer interface determines the thermal activation energy and directly affects JD. A newly synthesized EBL (3PAFBr) substantially enhances the interfacial energy barrier by forming a homogeneous contact owing to the improved anchoring ability of 3PAFBr. As a result, the OPD with 3PAFBr yields a noise current of 852 aA (JD = 12.3 fA cm⁻2 at V → -0.1 V) and several femtowatt-scale NEPs. As far as it is known, this is an ultralow of JD in NIR OPDs. This emphasizes the necessity for quantitative performance characterization.
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Affiliation(s)
- Tae Hyuk Kim
- School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Ji Hyeon Lee
- Department of Energy and Materials Engineering, Dongguk University, Seoul, 04620, Republic of Korea
| | - Min Ho Jang
- Department of Advanced Battery Convergence Engineering, Dongguk University, Seoul, 04620, Republic of Korea
| | - Gyeong Min Lee
- School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Eun Soo Shim
- Department of Energy and Materials Engineering, Dongguk University, Seoul, 04620, Republic of Korea
| | - Seunghyun Oh
- School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Muhammad Ahsan Saeed
- School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Min Jong Lee
- School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Byoung-Soo Yu
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Nanoscience and Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Republic of Korea
| | - Do Kyung Hwang
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Nanoscience and Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, Republic of Korea
| | - Chae Won Park
- Department of Advanced Battery Convergence Engineering, Dongguk University, Seoul, 04620, Republic of Korea
| | - Sae Youn Lee
- Department of Energy and Materials Engineering, Dongguk University, Seoul, 04620, Republic of Korea
| | - Jea Woong Jo
- Department of Energy and Materials Engineering, Dongguk University, Seoul, 04620, Republic of Korea
| | - Jae Won Shim
- School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea
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2
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Kamal, Samanta S. Noninnocent Azo-Aromatic Cobalt(II)-Catalyzed sp 3 C-H Alkylation of Fluorenes with Alcohols. J Org Chem 2024; 89:1910-1926. [PMID: 38205792 DOI: 10.1021/acs.joc.3c02657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Herein, employing well-defined redox noninnocent cobalt(II) complexes an efficient sp3 C-H alkylation of fluorenes using alcohols as alkylating agents to result in alkylated fluorenes is reported. The catalytic protocol was versatile with various fluorenes and benzyl alcohols. It also showed very good functional group tolerance with both alcohols and fluorenes. Moreover, an efficient single-step and simultaneous di C-C as well as both C-C and the C-N alkylation reaction of fluorenes was observed with this catalytic protocol. Such selective single-step dialkylation of fluorenes is indeed beneficial. Several control experiments, deuterium labeling, and 1H NMR kinetic studies have revealed a ligand radical-based borrowing hydrogen mechanism involving the azo-aromatic complexes of cobalt as catalysts for the alkylation of fluorenes.
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Affiliation(s)
- Kamal
- Department of Chemistry, Indian Institute of Technology (IIT) Jammu, Jagti, Jammu, Jammu & Kashmir 181221, India
| | - Subhas Samanta
- Department of Chemistry, Indian Institute of Technology (IIT) Jammu, Jagti, Jammu, Jammu & Kashmir 181221, India
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3
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Wu X, Chen N, Hu C, Klok HA, Lee YM, Hu X. Fluorinated Poly(aryl piperidinium) Membranes for Anion Exchange Membrane Fuel Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2210432. [PMID: 36642967 DOI: 10.1002/adma.202210432] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/23/2022] [Indexed: 05/13/2023]
Abstract
Anion-exchange-membrane fuel cells (AEMFCs) are a cost-effective alternative to proton-exchange-membrane fuel cells (PEMFCs). The development of high-performance and durable AEMFCs requires highly conductive and robust anion-exchange membranes (AEMs). However, AEMs generally exhibit a trade-off between conductivity and dimensional stability. Here, a fluorination strategy to create a phase-separated morphological structure in poly(aryl piperidinium) AEMs is reported. The highly hydrophobic perfluoroalkyl side chains augment phase separation to construct interconnected hydrophilic channels for anion transport. As a result, these fluorinated PAP (FPAP) AEMs simultaneously possess high conductivity (>150 mS cm-1 at 80 °C) and high dimensional stability (swelling ratio <20% at 80 °C), excellent mechanical properties (tensile strength >80 MPa and elongation at break >40%) and chemical stability (>2000 h in 3 m KOH at 80 °C). AEMFCs with a non-precious Co-Mn spinel cathode using the present FPAP AEMs achieve an outstanding peak power density of 1.31 W cm-2 . The AEMs remain stable over 500 h of fuel cell operation at a constant current density of 0.2 A cm-2 .
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Affiliation(s)
- Xingyu Wu
- Laboratory of Inorganic Synthesis and Catalysis (LSCI), Institute of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Nanjun Chen
- Laboratory of Inorganic Synthesis and Catalysis (LSCI), Institute of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Chuan Hu
- Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Harm-Anton Klok
- Laboratoire des Polymères, Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Young Moo Lee
- Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis (LSCI), Institute of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
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4
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Blue light-emitting fluorene–dendron hybridized polymers: optophysical features. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04571-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
AbstractIn this manuscript, we have demonstrated an efficient and rapid synthetic strategy for preparation of new fluorene–dendron-hybridized blue light-emitting polymers P1–P7 by the reaction of 9,9 long-chain dialkylated fluorenes M2–M8 with dendronized monomer (M1) under microwave-assisted reaction condition. These fluorene–dendron-hybridized polymers P1–P7 were characterized using different spectroscopic techniques. Furthermore, the optophysical properties of these polymers P1–P7 were studied which revealed that these synthesized polymers P1–P7 have potential to emerge as capable materials in the development of diodes, particularly for blue light emission. In the future, similar approaches would be utilized for preparation of light-emitting polymer composite.
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Recyclable cooperative catalyst for accelerated hydroaminomethylation of hindered amines in a continuous segmented flow reactor. Nat Commun 2022; 13:2441. [PMID: 35508490 PMCID: PMC9068773 DOI: 10.1038/s41467-022-30175-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 04/18/2022] [Indexed: 12/02/2022] Open
Abstract
Synthesis of hindered amines using the atom-efficient hydroaminomethylation (HAM) route remains a challenge. Here, we report a general and accelerated HAM in segmented flow, achieved via a cooperative effect between rhodium (Rh)/N-Xantphos and a co-catalyst (2-Fluoro-4-methylbenzoic acid) to increase the reactivity by 70 fold when compared to Rh/Xantphos in batch reactors. The cooperation between Rh and the co-catalyst facilitates the cleavage of the H–H bond and drives the equilibrium-limited condensation step forward. Online reaction optimization expands the scope to include alkyl, aryl, and primary amines. In-flow solvent tuning enables selectivity switching from amine to enamine without the need for changing the ligand. Furthermore, leveraging the ionic nature of the catalyst, we present a robust Rh recovery strategy up to 4 recycles without loss of activity. Flow chemistry enables intensified production of hindered amines. Here the authors present a rapid and reusable catalyst to operate in a segmented flow reactor for olefin hydroaminomethylation to selectively produce hindered amines or enamines.
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Al-Marhabi AR, El-Shishtawy RM, Al-Footy KO. Synthesis and optical properties of novel key electron donors-based pinacol boronate ester derived from phenothiazine, phenoxazine and carbazole. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Biswas A, Bains AK, Adhikari D. Ligand-assisted nickel catalysis enabling sp 3 C–H alkylation of 9 H-fluorene with alcohols. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00638c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A nickel catalysed chemoselective sp3 C–H alkylation of 9H-fluorene with alcohols is reported which follows a radical pathway employing the borrowing hydrogen route.
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Affiliation(s)
- Ayanangshu Biswas
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, Knowledge City, Manauli-140306, India
| | - Amreen K. Bains
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, Knowledge City, Manauli-140306, India
| | - Debashis Adhikari
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, Knowledge City, Manauli-140306, India
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8
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Mondal A, Sharma R, Pal D, Srimani D. Manganese catalyzed switchable C-alkylation/alkenylation of fluorenes and indene with alcohols. Chem Commun (Camb) 2021; 57:10363-10366. [PMID: 34541595 DOI: 10.1039/d1cc03529k] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The usage of earth-abundant, nontoxic transition metals in place of rare noble metals is a central goal in catalysis. This would be especially interesting when the reactivity and selectivity patterns can be tuned. Herein, we introduced the first Mn-catalyzed selective C-alkylation and olefination of fluorene, and indene with alcohols. Various substrates including benzylic, heteroaromatic, and aliphatic primary and secondary alcohols are employed as alkylating agents. Mechanistic investigations and a kinetic study underpin the involvement of the olefinated intermediate to furnish the alkylated product.
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Affiliation(s)
- Avijit Mondal
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
| | - Rahul Sharma
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
| | - Debjyoti Pal
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
| | - Dipankar Srimani
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
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9
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Altinolcek N, Battal A, Tavasli M, Peveler WJ, Yu HA, Skabara PJ. Synthesis of novel multifunctional carbazole-based molecules and their thermal, electrochemical and optical properties. Beilstein J Org Chem 2020; 16:1066-1074. [PMID: 32550921 PMCID: PMC7277623 DOI: 10.3762/bjoc.16.93] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 05/06/2020] [Indexed: 11/23/2022] Open
Abstract
Two novel carbazole-based compounds 7a and 7b were synthesised as potential candidates for application in organic electronics. The materials were fully characterised by NMR spectroscopy, mass spectrometry, FTIR, thermogravimetric analysis, differential scanning calorimetry, cyclic voltammetry, and absorption and emission spectroscopy. Compounds 7a and 7b, both of which were amorphous solids, were stable up to 291 °C and 307 °C, respectively. Compounds 7a and 7b show three distinctive absorption bands: high and mid energy bands due to locally excited (LE) transitions and low energy bands due to intramolecular charge transfer (ICT) transitions. In dichloromethane solutions compounds 7a and 7b gave emission maxima at 561 nm and 482 nm with quantum efficiencies of 5.4% and 97.4% ± 10%, respectively. At positive potential, compounds 7a and 7b gave two different oxidation peaks, respectively: quasi-reversible at 0.55 V and 0.71 V, and reversible at 0.84 V and 0.99 V. At negative potentials, compounds 7a and 7b only exhibited an irreversible reduction peak at −1.86 V and −1.93 V, respectively.
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Affiliation(s)
- Nuray Altinolcek
- Department of Chemistry, Faculty of Science-Art, Uludag University, 16059 Nilufer, Bursa, Turkey
| | - Ahmet Battal
- Department of Elementary School Education, Faculty of Education, Mus Alparslan University, 49100, Mus, Turkey.,WestCHEM, School of Chemistry, University of Glasgow, Joseph Black Building, G128QQ Glasgow, UK
| | - Mustafa Tavasli
- Department of Chemistry, Faculty of Science-Art, Uludag University, 16059 Nilufer, Bursa, Turkey
| | - William J Peveler
- WestCHEM, School of Chemistry, University of Glasgow, Joseph Black Building, G128QQ Glasgow, UK
| | - Holly A Yu
- WestCHEM, School of Chemistry, University of Glasgow, Joseph Black Building, G128QQ Glasgow, UK
| | - Peter J Skabara
- WestCHEM, School of Chemistry, University of Glasgow, Joseph Black Building, G128QQ Glasgow, UK
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10
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Kalita H, Patowary M. Fluorescent tumor-targeted polymer-bioconjugate: A potent theranostic platform for cancer therapy. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Shaikh MA, Agalave SG, Ubale AS, Gnanaprakasam B. Ligand-Free Ru-Catalyzed Direct sp 3 C-H Alkylation of Fluorene Using Alcohols. J Org Chem 2020; 85:2277-2290. [PMID: 31905282 DOI: 10.1021/acs.joc.9b02913] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The sp3 C-H alkylation of 9H-fluorene using alcohol and a Ru catalyst via the borrowing hydrogen concept has been described. This reaction was catalyzed by the [Ru(p-cymene)Cl2]2 complex (3 mol %) and exhibited a broad reaction scope with different alcohols, allowing primary and secondary alcohols to be employed as nonhazardous and greener alkylating agents with the formation of environmentally benign water as a byproduct. A variety of 9H-fluorene underwent selective and exclusive mono-C9-alkylation with primary alcohols in good to excellent isolated yield (26 examples, 50-92% yield), whereas this reaction with secondary alcohols in the absence of any external oxidants furnished the tetrasubstituted alkene as the major product. Furthermore, a base-mediated C-H hydroxylation of the synthesized 9H-fluorene derivatives afforded 9H-hydroxy-functionalized quaternary fluorene derivatives in excellent yield.
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Affiliation(s)
- Moseen A Shaikh
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
| | - Sandip G Agalave
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
| | - Akash S Ubale
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
| | - Boopathy Gnanaprakasam
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
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Sarkar R, Mukhopadhyay C. Carbon-Hydrogen Bond Functionalization in Aqueous Medium: A Brief Review. CURRENT GREEN CHEMISTRY 2019. [DOI: 10.2174/2213346106666191019120048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In the last few decades, considerable research has led to the introduction of selective and
efficient green as well as sustainable synthetic methods of functionalization of carbon-hydrogen bonds
to form new carbon-carbon and carbon-heteroatom bonds. In this emerging field, significant development
has been attained under various environmentally benign conditions including aqueous medium.
In this review, we have summarized the current development of C-H functionalization carried out in
an aqueous medium and its synthetic applications according to carbon-carbon and carbon-heteroatom
bond formations under green conditions.
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Affiliation(s)
- Rajib Sarkar
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata-700009, India
| | - Chhanda Mukhopadhyay
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata-700009, India
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13
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Kadu RK, Thakur PB, Patil VR. Photophysical properties of new fluorene-based conjugated polymers containing polyphenylene-substituted dendronized core. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-018-2401-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Tanwar AS, Patidar S, Ahirwar S, Dehingia S, Iyer PK. “Receptor free” inner filter effect based universal sensors for nitroexplosive picric acid using two polyfluorene derivatives in the solution and solid states. Analyst 2019; 144:669-676. [DOI: 10.1039/c8an01970c] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
“Receptor free” and “interaction free” detection of nitroexplosive PA at remarkably low limit of detection (LOD) values of 110 nM and 219 nM using two new fluorescent polymers via the inner filter effect mechanism.
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Affiliation(s)
- Arvin Sain Tanwar
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Sourabh Patidar
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Saurabh Ahirwar
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Sourav Dehingia
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Parameswar Krishnan Iyer
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
- Centre of Nanotechnology
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15
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Tanwar AS, Adil LR, Afroz MA, Iyer PK. Inner Filter Effect and Resonance Energy Transfer Based Attogram Level Detection of Nitroexplosive Picric Acid Using Dual Emitting Cationic Conjugated Polyfluorene. ACS Sens 2018; 3:1451-1461. [PMID: 30039698 DOI: 10.1021/acssensors.8b00093] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel conjugated cationic polyfluorene (polyelectrolyte) derivative, PFBT, was developed by means of simple and cost-effective oxidative coupling polymerization method. PFBT displayed dual state emission in dimethyl sulfoxide (DMSO) as well as in water, a characteristic phenomenon of polyfluorene homopolymers, and tested for nitroexplosive analytes detection to observe a remarkable fluorescence quenching response for picric acid (PA) in the both solvents. The polymer PFBT demonstrated substantial selectivity and ultrasensitivity toward nitroexplosive PA in both the solvents (DMSO and H2O) with exceptional quenching constant values of 2.69 × 104 and 2.18 × 105 M-1 and a ultralow limit of detection of 92.7 nM (21.23 ppb) and 0.19 nM (43.53 ppt) in respective solvents. Furthermore, economical portable test strip devices were prepared for easy and fast on-site PA sensing, which can detect up to 0.22 ag level of PA. PA sensing in vapor phase was also established, that could detect up to 42.6 ppb level of PA vapors. Interestingly, the mechanism of sensing in DMSO solvent was attributed to substantial inner filter effect and photoinduced electron transfer, while in H2O the sensing occurs via possible resonance energy transfer and photoinduced electron transfer, which is exceptional and not reported earlier for a single probe.
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Affiliation(s)
- Arvin Sain Tanwar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Laxmi Raman Adil
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Mohammad Adil Afroz
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Parameswar Krishnan Iyer
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, 781039, India
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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
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17
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Mishra AV, Chandorkar KB, Patil VR. Microwave assisted novel synthetic route for polyfluorenes containing triphenylamine and solubilizing alkyl moiety for blue emitting diodes. POLYM INT 2018. [DOI: 10.1002/pi.5521] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alok V Mishra
- Department of Chemistry; University of Mumbai; Santacruz (E) India
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18
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Enriquez-Cabrera A, Lacroix PG, Sasaki I, Mallet-Ladeira S, Farfán N, Barba-Barba RM, Ramos-Ortiz G, Malfant I. Comparison of Carbazole and Fluorene Donating Effects on the Two-Photon Absorption and Nitric Oxide Photorelease Capabilities of a Ruthenium-Nitrosyl Complex. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700895] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Alejandro Enriquez-Cabrera
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
- Facultad de Quimica; Departamento de Quimica Orgánica; Universidad Nacional Autónoma de México; 04510 México D.F. México
| | - Pascal G. Lacroix
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | - Isabelle Sasaki
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | - Sonia Mallet-Ladeira
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | - Norberto Farfán
- Facultad de Quimica; Departamento de Quimica Orgánica; Universidad Nacional Autónoma de México; 04510 México D.F. México
| | | | - Gabriel Ramos-Ortiz
- Centro de Investigaciones en Óptica (CIO), A.P. 1-948; 37000 León Gto México
| | - Isabelle Malfant
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
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Chowdhury SR, Mukherjee S, Das S, Patra CR, Iyer PK. Multifunctional (3-in-1) cancer theranostics applications of hydroxyquinoline-appended polyfluorene nanoparticles. Chem Sci 2017; 8:7566-7575. [PMID: 29568419 PMCID: PMC5848823 DOI: 10.1039/c7sc03321d] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Accepted: 08/26/2017] [Indexed: 11/22/2022] Open
Abstract
The accumulation of fluorescent hydroxyquinoline-affixed polyfluorene (PF-HQ) nanoparticles and their utility for multi-color bio-imaging and drug delivery for cancer treatment are reported. The formation of nanoparticles (PF-HQ) containing hydrophobic pockets via three-dimensional growth of a polymeric backbone in a higher water fraction (THF : H2O = 1 : 9) was observed. The nanoparticles showed incredible dual-state optical and fluorescence properties, which were further explored in multi-color cell imaging in both cancer and normal cells. The cell viability assay in various normal cells confirmed the biocompatible nature of PF-HQ, which was further supported by an ex vivo (chick chorioallantoic membrane assay) model. This encouraged us to fabricate PF-HQ-based new drug delivery systems (DDS: PF-HQ-DOX) upon conjugation with the FDA-approved anti-cancer drug doxorubicin (DOX) by filling the hydrophobic pockets of the polymer nanoparticles. The enhanced anti-cancer activity of the DDS (PF-HQ-DOX) compared with that of free DOX was observed in mouse melanoma cancer cells (B16F10) and a subcutaneous mouse (C57BL6/J) melanoma tumor model upon administration of PF-HQ-DOX. Ex vivo biodistribution studies using a fluorescence quantification method demonstrated the enhanced accumulation of DOX in tumor tissues in the PF-HQ-DOX-treated group compared to that of the free drug, signifying the drug delivery efficacy of the delivery system by a passive targeting manner. Based on the above biological data (in vitro and in the pre-clinical model), these robust and versatile fluorescent hydroxyquinoline-affixed polyfluorene (PF-HQ) nanoparticles could be effectively utilized for multifunctional biomedical applications (as they are biocompatible and can be used for bio-imaging and as a drug delivery vehicle).
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Affiliation(s)
- Sayan Roy Chowdhury
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , Assam , India .
| | - Sudip Mukherjee
- Chemical Biology , CSIR-Indian Institute of Chemical Technology , Uppal Road, Tarnaka , Hyderabad-500007 , Telangana State , India .
- Academy of Scientific and Innovative Research (AcSIR) , Training and Development Complex , CSIR Campus, CSIR Road, Taramani , Chennai-600 113 , India
| | - Sourav Das
- Chemical Biology , CSIR-Indian Institute of Chemical Technology , Uppal Road, Tarnaka , Hyderabad-500007 , Telangana State , India .
- Academy of Scientific and Innovative Research (AcSIR) , Training and Development Complex , CSIR Campus, CSIR Road, Taramani , Chennai-600 113 , India
| | - Chitta Ranjan Patra
- Chemical Biology , CSIR-Indian Institute of Chemical Technology , Uppal Road, Tarnaka , Hyderabad-500007 , Telangana State , India .
- Academy of Scientific and Innovative Research (AcSIR) , Training and Development Complex , CSIR Campus, CSIR Road, Taramani , Chennai-600 113 , India
| | - Parameswar Krishnan Iyer
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , Assam , India .
- Centre for Nanotechnology , Indian Institute of Technology Guwahati , Guwahati-781039 , Assam , India
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20
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Malik AH, Iyer PK. Conjugated Polyelectrolyte Based Sensitive Detection and Removal of Antibiotics Tetracycline from Water. ACS APPLIED MATERIALS & INTERFACES 2017; 9:4433-4439. [PMID: 28094507 DOI: 10.1021/acsami.6b13949] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new conjugated polyelectrolyte poly[5,5'-(((2-phenyl-9H-fluorene-9,9-diyl)bis(hexane-6,1-diyl))bis(oxy))diisophthalate] sodium (PFPT) was synthesized via the palladium-catalyzed Suzuki cross-coupling polymerization method and successfully applied for the rapid, real time, and highly sensitive detection of antibiotics tetracycline (Tc) in 100% aqueous media via photoinduced electron transfer with detection limit in the ppb level. Remarkably, PFPT could also be applied for the trace analysis of Tc in serum samples having recoveries well in the range 92-97% with relative standard deviations (RSD) of 1.01-1.14%, confirming reliability of the present method for the analysis of Tc. Additionally, PFPT was blended with the abundant natural polysaccharide chitosan to form CS-PFPT composite films and developed as a biopolymer based membrane for the removal of Tc from water samples with a good adsorption capacity of 3.12 mg g-1, thus finding vital application in the treatment of antibiotic infested wastewater.
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Affiliation(s)
- Akhtar Hussain Malik
- Department of Chemistry and ‡Centre for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati 781039, India
| | - Parameswar Krishnan Iyer
- Department of Chemistry and ‡Centre for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati 781039, India
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Robin J, Audebrand N, Poriel C, Canivet J, Calvez G, Roisnel T, Dorcet V, Roussel P. A series of chiral metal–organic frameworks based on fluorene di- and tetra-carboxylates: syntheses, crystal structures and luminescence properties. CrystEngComm 2017. [DOI: 10.1039/c7ce00108h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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22
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New quaternary phosphonium salt as multi-site phase-transfer catalyst for various alkylation reactions. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2600-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Muthuraj B, Mukherjee S, Patra CR, Iyer PK. Amplified Fluorescence from Polyfluorene Nanoparticles with Dual State Emission and Aggregation Caused Red Shifted Emission for Live Cell Imaging and Cancer Theranostics. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32220-32229. [PMID: 27933822 DOI: 10.1021/acsami.6b11373] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A newly synthesized polyfluorene derivative with pendant di(2-picolyl)amine (PF-DPA) shows dual state emission and aggregation caused red shifted emission that was utilized for cell imaging and cancer theranostics. PF-DPA was nontoxic to normal cells but showed cytotoxicity against cancer cells, suggesting its utility for cancer therapy. PF-DPA exhibits a large and unique red shifted emission at 556 nm at higher water ratio of THF:H2O (10:90) due to the formation of polymer nanoparticles or PDots spontaneously by intra- and intermolecular self-assembly induced aggregation. Dual state emission and aggregation caused red shifted emission (>100 nm) in PF-DPA homopolymer nanoparticles is very unique and attributed to the combined effect of intramolecular planarization and J-type aggregate formation in the PDots (25 ± 5 nm). The PF-DPA PDots exhibit bright green and orange fluorescence with exceptional live cell imaging properties and potential applications in cancer theranostics due to their selective cytotoxic nature toward cancer cells.
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Affiliation(s)
- Balakrishnan Muthuraj
- Department of Chemistry, Indian Institute of Technology Guwahati , Guwahati 781039, India
| | - Sudip Mukherjee
- Biomaterials Group, CSIR-Indian Institute of Chemical Technology , Uppal Road, Tarnaka, Hyderabad 500007, Telangana State, India
- Academy of Scientific and Innovative Research (AcSIR) , Taramani, Chennai 600 113, India
| | - Chitta Ranjan Patra
- Biomaterials Group, CSIR-Indian Institute of Chemical Technology , Uppal Road, Tarnaka, Hyderabad 500007, Telangana State, India
- Academy of Scientific and Innovative Research (AcSIR) , Taramani, Chennai 600 113, India
| | - Parameswar Krishnan Iyer
- Department of Chemistry, Indian Institute of Technology Guwahati , Guwahati 781039, India
- Centre for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati 781039, India
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24
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Tanwar AS, Hussain S, Malik AH, Afroz MA, Iyer PK. Inner Filter Effect Based Selective Detection of Nitroexplosive-Picric Acid in Aqueous Solution and Solid Support Using Conjugated Polymer. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00441] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Arvin Sain Tanwar
- Department of Chemistry and ‡Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Sameer Hussain
- Department of Chemistry and ‡Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Akhtar Hussain Malik
- Department of Chemistry and ‡Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Mohammad Adil Afroz
- Department of Chemistry and ‡Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Parameswar Krishnan Iyer
- Department of Chemistry and ‡Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-781039, India
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Malik AH, Hussain S, Kalita A, Iyer PK. Conjugated Polymer Nanoparticles for the Amplified Detection of Nitro-explosive Picric Acid on Multiple Platforms. ACS APPLIED MATERIALS & INTERFACES 2015; 7:26968-76. [PMID: 26580229 DOI: 10.1021/acsami.5b08068] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Spontaneously formed conjugated polymer nanoparticles (CPNs) or polymer dots displayed remarkable fluorescence response toward nitroexplosive-picric acid (PA) in multiple environments including 100% aqueous media, solid support using portable paper strips and vapor phase detection via two terminal device. This new cationic conjugated polyelectrolyte (CPE) poly(3,3'-((2-phenyl-9H-fluorene-9,9-diyl)bis(hexane-6,1-diyl))bis(1-methyl-1H-imidazol-3-ium)bromide) (PFMI) was synthesized by Suzuki coupling polymerization followed by post functionalization method without employing any hectic purification technique. Highest quenching constant value (K(sv)) of 1.12 × 10(8) M(-1) and a very low detection limit of 30.9 pM/7.07 ppt were obtained exclusively for PA in 100% aqueous environment which is rare and unique for any CPE/CPNs. Contact mode detection of PA was also performed using simple, cost-effective and portable fluorescent paper strips for achieving on-site detection. Furthermore, the two terminal sensor device fabricated with nanoparticles of PFMI (PFMI-NPs) provides an exceptional and unprecedented platform for the vapor mode detection of PA under ambient conditions. The mechanism for the ultrasensitivity of PFMI-NPs probe to detect PA is attributed to the "molecular-wire effect", electrostatic interaction, photoinduced electron transfer (PET), and possible resonance energy transfer (RET).
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Affiliation(s)
- Akhtar Hussain Malik
- Department of Chemistry and ‡Centre for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati-781039. India
| | - Sameer Hussain
- Department of Chemistry and ‡Centre for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati-781039. India
| | - Anamika Kalita
- Department of Chemistry and ‡Centre for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati-781039. India
| | - Parameswar Krishnan Iyer
- Department of Chemistry and ‡Centre for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati-781039. India
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Paramasivam M, Gupta A, Raynor AM, Bhosale SV, Bhanuprakash K, Jayathirtha Rao V. Small band gap D-π-A-π-D benzothiadiazole derivatives with low-lying HOMO levels as potential donors for applications in organic photovoltaics: a combined experimental and theoretical investigation. RSC Adv 2014. [DOI: 10.1039/c4ra02700k] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Small organic molecules with potential applications as donors in OPV featuring carbazole, benzocarbazole as donors, benzothiadiazole as acceptor and fluorene, thiophene as spacers (π) have been synthesized and characterized.
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Affiliation(s)
- Mahalingavelar Paramasivam
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
- Crop Protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
| | - Akhil Gupta
- School of Applied Sciences
- RMIT University
- Melbourne, Australia
| | - Aaron M. Raynor
- School of Applied Sciences
- RMIT University
- Melbourne, Australia
| | | | - K. Bhanuprakash
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
- CSIR-Network of Institutes for Solar Energy
- New Delhi, India
| | - V. Jayathirtha Rao
- Crop Protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, 500007 India
- CSIR-Network of Institutes for Solar Energy
- New Delhi, India
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27
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Tlach BC, Tomlinson AL, Ryno AG, Knoble DD, Drochner DL, Krager KJ, Jeffries-EL M. Influence of conjugation axis on the optical and electronic properties of aryl-substituted benzobisoxazoles. J Org Chem 2013; 78:6570-81. [PMID: 23796165 DOI: 10.1021/jo4007927] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Six different 2,6-diethyl-4,8-diarylbenzo[1,2-d:4,5-d']bis(oxazoles) and four different 2,4,6,8-tetraarylbenzobisoxazoles were synthesized in two steps: a Lewis acid catalyzed orthoester cyclization followed by a Suzuki or Stille cross-coupling with various arenes. The influence of aryl group substitution and/or conjugation axis variation on the optical and electronic properties of these benzobis(oxazole) (BBO) compounds was evaluated. Structural modifications could be used to alter the HOMO, LUMO, and band gap over a range of 1.0, 0.5, and 0.5 eV, respectively. However, depending on the location and identity of the substituent, the HOMO level can be altered without significantly impacting the LUMO level. This is supported by the calculated frontier molecular orbitals. Our results indicate that the FMOs and band gaps of benzobisoxazoles can be readily modified either jointly or individually.
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Affiliation(s)
- Brian C Tlach
- Department of Chemistry, Iowa State University, Ames, Iowa 50010, USA
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28
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Sun J, Jiang HJ, Zhang JL, Tao Y, Chen RF. Synthesis and characterization of heteroatom substituted carbazole derivatives: potential host materials for phosphorescent organic light-emitting diodes. NEW J CHEM 2013. [DOI: 10.1039/c2nj40900c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Weng J, Mei Q, Fan Q, Ling Q, Tong B, Huang W. Bipolar luminescent materials containing pyrimidine terminals: synthesis, photophysical properties and a theoretical study. RSC Adv 2013. [DOI: 10.1039/c3ra43631d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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30
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Jiang H, Sun J. Synthesis and characterization of a novel spirocyclic aromatic derivative: unique roles of phenothiazine. NEW J CHEM 2013. [DOI: 10.1039/c3nj00635b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Chen HF, Liao CT, Chen TC, Su HC, Wong KT, Guo TF. An ionic terfluorene derivative for saturated deep-blue solid state light-emitting electrochemical cells. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm03446k] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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