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Srivastava A, Grewal S, Bari NK, Saraswat M, Sinha S, Venkataramani S. Light-controlled shape-changing azomacrocycles exhibiting reversible modulation of pyrene fluorescence emission. Org Biomol Chem 2022; 20:5284-5292. [PMID: 35713091 DOI: 10.1039/d2ob00866a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We report the design, synthesis, and study of light-induced shape-changing azomacrocycles. These systems have been incorporated with azobenzene photoswitches using alkoxy tethers and triazole units to afford flexibility and binding. We envision that such azomacrocycles are capable of reversibly binding with the guest molecule. Remarkably, we have demonstrated fully light-controlled fluorescence quenching and enhancement in the monomeric emission of pyrene (guest). Such modulations have been achieved by the photoisomerization of the azomacrocycle and, in turn, host-guest interactions. Also, the azomacrocycles tend to aggregate and can also be controlled by light or heat. We uncovered such phenomena using spectroscopic, microscopic, and isothermal titration calorimetry (ITC) studies and computations.
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Affiliation(s)
- Anjali Srivastava
- Department of Chemical Science, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Knowledge City, Manauli 140 306, Punjab, India.
| | - Surbhi Grewal
- Department of Chemical Science, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Knowledge City, Manauli 140 306, Punjab, India.
| | - Naimat K Bari
- Institute of Nano Science and Technology (INST) Mohali, Sector 81, SAS Nagar, Knowledge City, Manauli 140 306, Punjab, India.
| | - Mayank Saraswat
- Department of Chemical Science, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Knowledge City, Manauli 140 306, Punjab, India.
| | - Sharmistha Sinha
- Institute of Nano Science and Technology (INST) Mohali, Sector 81, SAS Nagar, Knowledge City, Manauli 140 306, Punjab, India.
| | - Sugumar Venkataramani
- Department of Chemical Science, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Knowledge City, Manauli 140 306, Punjab, India.
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Belovari M, Nestić D, Marić I, Majhen D, Cametti M, Džolić Z. Photophysical characterization and the self-assembly properties of mono- and bis-pyrene derivatives for cell imaging applications. NEW J CHEM 2022. [DOI: 10.1039/d2nj03843a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Seven newly designed mono- and bis-pyrene derivatives with varying amino acid units self-assembled into fluorescent organic nanoparticles and were used for imaging in live cells.
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Affiliation(s)
- Mateja Belovari
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia
| | - Davor Nestić
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia
| | - Ivan Marić
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia
| | - Dragomira Majhen
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia
| | - Massimo Cametti
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, Milano, Italy
| | - Zoran Džolić
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia
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