1
|
Wang Z, Cao Z, Hao A, Xing P. Pnictogen bonding in imide derivatives for chiral folding and self-assembly. Chem Sci 2024; 15:6924-6933. [PMID: 38725497 PMCID: PMC11077576 DOI: 10.1039/d4sc00554f] [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: 01/23/2024] [Accepted: 04/05/2024] [Indexed: 05/12/2024] Open
Abstract
Pnictogen bonding (PnB) is an attraction interaction that originates from the anisotropic distribution of electron density of pnictogen elements, which however has been rarely found in nitrogen atoms. In this work, for the first time, we unveil the general presence of N-involved PnB in aromatic or aliphatic imide groups and reveal its implications in chiral self-assembly of folding. This long-neglected interaction was consolidated by Cambridge structural database (CSD) searching as well as subsequent computational studies. Though the presence of PnB has limited effects on spectroscopic properties in the solution phase, conformation locking effects are sufficiently expressed in the chiral folding and self-assembly behavior. PnB anchors the chiral conformation to control the emergence and inversion of chiroptical signals, while intramolecular PnB induces the formation of supramolecular tilt chirality. It also enables the chiral folding of imide-containing amino acid or peptide derivatives, which induces the formation of unique secondary structural sequences such as β-sheets. Finally, the effects of PnB in directing folded helical structures were revealed. Examples of cysteine and cystine derivatives containing multiple N⋯O and N⋯S PnBs constitute an α-helix like secondary structure with characteristic circular dichroism. This work discloses the comprehensive existence of imide-involved PnB, illustrates its important role in folding and self-assembly, and sheds light on the rational fabrication of conformation-locked compounds and polymers with controllable chiroptical activities.
Collapse
Affiliation(s)
- Zhuoer Wang
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Zhaozhen Cao
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Aiyou Hao
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Pengyao Xing
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| |
Collapse
|
2
|
Chorol S, Saini P, Mukhopadhyay S P. Synthesis and Properties of Electron-Deficient and Electron-Rich Redox-Active Ionic π-Systems. CHEM REC 2022; 22:e202200172. [PMID: 36069267 DOI: 10.1002/tcr.202200172] [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: 07/05/2022] [Revised: 08/18/2022] [Indexed: 12/14/2022]
Abstract
There is growing interest towards the design and synthesis of organic redox-active systems, which exist in ionic form. Multi- redox systems entail life-sustaining processes like photosynthesis and cellular respiration. The significant challenge for material scientists is to rationally design complex molecular materials that can store and transfer multiple electrons at low operational potentials and are stable under ambient conditions. Also, important are the designed ionic π-systems that combine efficient electron and ion transport. Here, we discuss the synthesis of ionic π-systems which exist in the closed-shell form. Firstly, different classes of ionic arylenediimides and viologens with different π-linkers are discussed from the synthetic, structural and redox perspective. These ionic π-systems are based on the electron deficient π-scaffolds, and are shown to accumulate upto six electrons. We then discuss electron-rich ionic arylenediimides which can exist in anionic form or zwitterionic form. The anionic electron donors have absorption extending to the near Infrared (NIR) region and can be stabilized in aqueous solution. We also discuss the effect of the electron accumulation on the aromaticity and non-aromaticity of the naphthalene and the imide rings of the naphthalenediimides. We finally discuss in brief, the applications related to the organic mixed ionic-electronic conductors.
Collapse
Affiliation(s)
- Sonam Chorol
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India, 110067
| | - Poonam Saini
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India, 110067
| | | |
Collapse
|
3
|
Kumar S, Yoshida K, Hattori Y, Higashino T, Imahori H, Seki S. Facile synthesis of an ambient stable pyreno[4,5- b]pyrrole monoanion and pyreno[4,5- b:9,10- b']dipyrrole dianion: from serendipity to design. Chem Sci 2022; 13:1594-1599. [PMID: 35282625 PMCID: PMC8826763 DOI: 10.1039/d1sc06070h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 01/04/2022] [Indexed: 12/02/2022] Open
Abstract
The stability of singly or multiply negatively charged π-conjugated organic compounds is greatly influenced by their electronic delocalization. Herein, we report a strategic methodology for isolation of a mysterious compound. The isolated compounds, a pyreno[4,5-b]pyrrole monoanion and pyreno[4,5-b:9,10-b′]dipyrrole dianion, were highly stable under ambient conditions due to high delocalization of the negative charge over multiple electron deficient C
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
N groups and pyrene π-scaffolds and allowed purification by column chromatography. To our knowledge, this is the first report on TCNE type reductive condensation of malononitrile involving pyrene di- and tetraone and formation of pyrenopyrrole. All compounds were characterized by spectroscopic methods and X-ray crystallography. A UV-vis spectroscopic study shows an intense low energy absorption band with a large absorption coefficient (ε). An ambient stable pyreno[4,5-b]pyrrole monoanion and pyreno[4,5-b:9,10-b′]dipyrrole dianion have been isolated and characterized, showing a low energy intense absorption band with the absorption coefficient reaching 7.1 × 104 dm3 mol−1 cm−1.![]()
Collapse
Affiliation(s)
- Sharvan Kumar
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| | - Kohshi Yoshida
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| | - Yusuke Hattori
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| | - Tomohiro Higashino
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| | - Hiroshi Imahori
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan .,Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University Sakyo-ku Kyoto 606-8501 Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| |
Collapse
|
4
|
Keshri SK, Mandal K, Kumar Y, Yadav D, Mukhopadhyay P. Naphthalenediimides with High Fluorescence Quantum Yield: Bright-Red, Stable, and Responsive Fluorescent Dyes. Chemistry 2021; 27:6954-6962. [PMID: 33539577 DOI: 10.1002/chem.202100020] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/28/2021] [Indexed: 12/22/2022]
Abstract
The naphthalenediimide (NDI) scaffold in contrast to its higher congeners possess low-fluorescence. In spite of elegant synthetic developments, a highly emissive NDI is quite rare to find, as well as, a green-light-emitting NDI is yet to be explored. Herein, we report a novel class of symmetric and asymmetric NH2 -substituted core-NDIs (1-5) with tunable fluorescence in the visible region and extending to the NIR frontier. Importantly, the bis-NH2 -substituted NDI 2 revealed quantum yield, Φ f of ≈81 and ≈68 % in toluene and DMSO, respectively, suggesting versatility of the fluorophore in a wide range of solvent polarity. The dye 1 is shown to be the first NDI-based green-light emitter. The donor piperidine group in 5 diminish the Φ f by 40-fold providing a lever to modulate the excited-state intramolecular proton transfer (ESIPT) process. Our synthetic protocol applies a Pd catalyst and a benign hydride source simplifying the non-trivial -NH2 group integration at the NDI-core. TD-DFT calculations predicted strong intramolecular hydrogen bonds in the excited state in the bulk nonpolar medium and responsiveness to solvent polarity. The maximization of the NDI emission outlined here would further boost the burgeoning repertoire of applications of the NDI scaffold.
Collapse
Affiliation(s)
- Sudhir Kumar Keshri
- Supramolecular and Material Chemistry Lab, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Kalyanashis Mandal
- Supramolecular and Material Chemistry Lab, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Yogendra Kumar
- Supramolecular and Material Chemistry Lab, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Devendra Yadav
- Supramolecular and Material Chemistry Lab, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Pritam Mukhopadhyay
- Supramolecular and Material Chemistry Lab, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| |
Collapse
|
5
|
Shukla J, Kumar S, Rustam, Mukhopadhyay P. Synthesis of Stable, High-SOMO Zwitterionic Radicals: Enabling Intermolecular Electron Transfer between Naphthalenediimides. Org Lett 2020; 22:6229-6233. [DOI: 10.1021/acs.orglett.0c01263] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jyoti Shukla
- Supramolecular and Material Chemistry Lab, School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Sharvan Kumar
- Supramolecular and Material Chemistry Lab, School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Rustam
- Supramolecular and Material Chemistry Lab, School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Pritam Mukhopadhyay
- Supramolecular and Material Chemistry Lab, School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| |
Collapse
|
6
|
Shukla J, Mukhopadhyay P. Synthesis of Functionalized Naphthalene Diimides and their Redox Properties. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901390] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Jyoti Shukla
- School of Physical Sciences; Jawaharlal Nehru University; New Delhi India
| | | |
Collapse
|
7
|
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
|
8
|
Ng CK, Tam TLD, Wei F, Lu X, Wu J. Anion–π and anion–π-radical interactions in bis(triphenylphosphonium)-naphthalene diimide salts. Org Chem Front 2019. [DOI: 10.1039/c8qo01122b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Anion–π-radical interaction plays a key role in photophysical and magnetic properties.
Collapse
Affiliation(s)
- Chee Koon Ng
- Institute of Materials Research and Engineering (IMRE)
- Agency of Science
- Technology and Research (A*STAR)
- Singapore 138634
- Singapore
| | - Teck Lip Dexter Tam
- Institute of Materials Research and Engineering (IMRE)
- Agency of Science
- Technology and Research (A*STAR)
- Singapore 138634
- Singapore
| | - Fengxia Wei
- Institute of Materials Research and Engineering (IMRE)
- Agency of Science
- Technology and Research (A*STAR)
- Singapore 138634
- Singapore
| | - Xuefeng Lu
- Department of Chemistry
- National University of Singapore
- Singapore
- Singapore
| | - Jishan Wu
- Department of Chemistry
- National University of Singapore
- Singapore
- Singapore
| |
Collapse
|
9
|
Kumar Y, Kumar S, Mandal K, Mukhopadhyay P. Isolation of Tetracyano-Naphthalenediimide and Its Stable Planar Radical Anion. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807836] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yogendra Kumar
- Supramolecular and Material Chemistry Lab; School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110067 India
| | - Sharvan Kumar
- Supramolecular and Material Chemistry Lab; School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110067 India
| | - Kalyanashis Mandal
- Supramolecular and Material Chemistry Lab; School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110067 India
| | - Pritam Mukhopadhyay
- Supramolecular and Material Chemistry Lab; School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110067 India
| |
Collapse
|
10
|
Kumar Y, Kumar S, Mandal K, Mukhopadhyay P. Isolation of Tetracyano-Naphthalenediimide and Its Stable Planar Radical Anion. Angew Chem Int Ed Engl 2018; 57:16318-16322. [DOI: 10.1002/anie.201807836] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/28/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Yogendra Kumar
- Supramolecular and Material Chemistry Lab; School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110067 India
| | - Sharvan Kumar
- Supramolecular and Material Chemistry Lab; School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110067 India
| | - Kalyanashis Mandal
- Supramolecular and Material Chemistry Lab; School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110067 India
| | - Pritam Mukhopadhyay
- Supramolecular and Material Chemistry Lab; School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110067 India
| |
Collapse
|
11
|
Keshri SK, Asthana D, Chorol S, Kumar Y, Mukhopadhyay P. Appending Diverse π-Extended Acceptors with Tetrathiafulvalene/Dithiafulvalene Donors: Multistate Redox Properties, Radical Ion Generation, and Mid-IR-Absorbing Mixed-Valence States. Chemistry 2018; 24:1821-1832. [DOI: 10.1002/chem.201704604] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Indexed: 02/05/2023]
Affiliation(s)
- Sudhir Kumar Keshri
- Supramolecular and Material Chemistry Lab, School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110 067 India
| | - Deepak Asthana
- Supramolecular and Material Chemistry Lab, School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110 067 India
| | - Sonam Chorol
- Supramolecular and Material Chemistry Lab, School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110 067 India
| | - Yogendra Kumar
- Supramolecular and Material Chemistry Lab, School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110 067 India
| | - Pritam Mukhopadhyay
- Supramolecular and Material Chemistry Lab, School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110 067 India
| |
Collapse
|
12
|
Abstract
This review article highlights the emergence of eclectic molecular design principles to realize remarkably strong electron deficient arylenediimide molecules, aspects of their stability and associated applications.
Collapse
Affiliation(s)
- Sharvan Kumar
- Supramolecular and Material Chemistry Lab
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
| | - Jyoti Shukla
- Supramolecular and Material Chemistry Lab
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
| | - Yogendra Kumar
- Supramolecular and Material Chemistry Lab
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
| | - Pritam Mukhopadhyay
- Supramolecular and Material Chemistry Lab
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
| |
Collapse
|
13
|
Debnath S, Boyle CJ, Zhou D, Wong B, Kittilstved KR, Venkataraman D. Persistent radical anion polymers based on naphthalenediimide and a vinylene spacer. RSC Adv 2018; 8:14760-14764. [PMID: 35541312 PMCID: PMC9079952 DOI: 10.1039/c8ra02417k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 04/12/2018] [Indexed: 01/13/2023] Open
Abstract
A design strategy for polymers that can be reduced by up to 4 electrons and have persistent radical anions.
Collapse
Affiliation(s)
- Sashi Debnath
- Department of Chemistry
- University of Massachusetts Amherst
- Massachusetts 01003
- USA
| | - Connor J. Boyle
- Department of Chemistry
- University of Massachusetts Amherst
- Massachusetts 01003
- USA
| | - Dongming Zhou
- Department of Chemistry
- University of Massachusetts Amherst
- Massachusetts 01003
- USA
| | - Bryan M. Wong
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program
- University of California, Riverside
- Riverside
- USA
| | - Kevin R. Kittilstved
- Department of Chemistry
- University of Massachusetts Amherst
- Massachusetts 01003
- USA
| | - D. Venkataraman
- Department of Chemistry
- University of Massachusetts Amherst
- Massachusetts 01003
- USA
| |
Collapse
|