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Singh S, Sharma AK, Gade HM, Agarwal V, Nasani R, Verma N, Sharma B. Stimuli-responsive and self-healing supramolecular Zn(II)-guanosine metal-organic gel for Schottky barrier diode application. SOFT MATTER 2024; 20:1025-1035. [PMID: 38197513 DOI: 10.1039/d3sm01405c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Spontaneous formation of a supramolecular metal-organic hydrogel using unsubstituted guanosine as a ligand and Zn2+ ions is reported. Guanosine, in the presence of NaOH, self-assembled into a stable G-quadruplex structure, which underwent crosslinking through Zn2+ ions to afford a stable hydrogel. The gel has been characterized using several spectroscopic as well as microscopic studies. The hydrogel demonstrated excellent stimuli responsiveness towards various chemicals and pH. Furthermore, the gel exhibited intrinsic thixotropic behavior and showed self-healing and injectable properties. The optical properties of the Zn-guanosine metallo-hydrogel suggested a semiconducting nature of the gel, which has been exploited for fabricating a thin film device based on a Schottky diode interface between metal and a semiconductor. The fabricated device shows excellent charge transport characteristics and linear rectifying behavior. The findings are likely to pave the way for newer research in the area of soft electronic devices fabricated using materials synthesized by employing simple biomolecules.
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Affiliation(s)
- Surbhi Singh
- Materials Research Centre, Malaviya National Institute of Technology Jaipur, Malviya Nagar, Jaipur 302017, India.
| | - Atul Kumar Sharma
- Department of Electronics and Communication Engineering, Malaviya National Institute of Technology Jaipur, Malviya Nagar, Jaipur 302017, India
| | - Hrushikesh M Gade
- Department of Chemical Engineering, Malaviya National Institute of Technology Jaipur, Malviya Nagar, Jaipur 302017, India
| | - Vidhi Agarwal
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore 453552, India
| | - Rajendar Nasani
- School of Chemistry, University of Hyderabad, Gachibowli, Hyderabad 500046, India
| | - Nisha Verma
- Materials Research Centre, Malaviya National Institute of Technology Jaipur, Malviya Nagar, Jaipur 302017, India.
| | - Bhagwati Sharma
- Materials Research Centre, Malaviya National Institute of Technology Jaipur, Malviya Nagar, Jaipur 302017, India.
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Yuan X, Zhang X, Hu J, Zhang B, Ma X, He J, Shi L. A ThT Derivative as Zn 2+ Sensor Based on DNA G-quadruplex. J Fluoresc 2024; 34:353-358. [PMID: 37256463 DOI: 10.1007/s10895-023-03278-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 05/17/2023] [Indexed: 06/01/2023]
Abstract
In this report, we developed a sensing strategy based on ThT-E (a ThT derivative) and DNA G-quadruplex for the label-free detection of Zn2+. In the absence of Zn2+, there was a fluorescence enhancement of ThT-E by interaction with human telomere sequence. On the addition of Zn2+, Zn2+ induced a more compact antiparallel G-quadruplex to release ThT-E, resulting in fluorescence quenching. The detection limit was 0.6996 μM, and the fluorescence intensity showed a good linear relationship with the concentration of Zn2+ in the range of 0-10 μM. This sensing strategy which only needs to mix two kinds of materials has the characteristics of label-feel, simple operation, short response time, economical and efficient.
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Affiliation(s)
- Xinyu Yuan
- College of Chemical Engineering, North China University of Science and Technology, Tangshan, 063210, China
| | - Xiufeng Zhang
- College of Chemical Engineering, North China University of Science and Technology, Tangshan, 063210, China.
- Hebei Key Laboratory of Medical-Industrial Integration Precision Medicine, North China University of Science and Technology, Tangshan, 063210, China.
| | - Jinshan Hu
- College of Chemical Engineering, North China University of Science and Technology, Tangshan, 063210, China
| | - Buyue Zhang
- College of Chemical Engineering, North China University of Science and Technology, Tangshan, 063210, China
| | - Xiaoying Ma
- College of Chemical Engineering, North China University of Science and Technology, Tangshan, 063210, China
| | - Jinxing He
- College of Chemical Engineering, North China University of Science and Technology, Tangshan, 063210, China
| | - Lei Shi
- College of Chemical Engineering, North China University of Science and Technology, Tangshan, 063210, China
- Hebei Key Laboratory of Medical-Industrial Integration Precision Medicine, North China University of Science and Technology, Tangshan, 063210, China
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Wang C, Li J. Fluorescence method for kanamycin detection based on the conversion of G-triplex and G-quadruplex. Anal Bioanal Chem 2021; 413:7073-7080. [PMID: 34628526 DOI: 10.1007/s00216-021-03676-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 09/04/2021] [Accepted: 09/17/2021] [Indexed: 01/07/2023]
Abstract
A versatile fluorescence scaffold was constructed by connecting a G-triplex sequence (G31) with G-rich DNA (aptamer of kanamycin) and using thioflavin T (ThT) as the fluorescent molecule. With the assistance of an aptamer, the G-quadruplex DNA structure was fabricated using G31 as three strands and the aptamer as the fourth strand. Due to the parallel planar morphology of the final products, which was favorable for ThT binding and which restricted the rotation of the aromatic rings of ThT, the fluorescence signal intensity of ThT was significantly enhanced. Because of the specific interaction of aptamer and kanamycin, in addition to the greater ability for kanamycin to bind with G-triplex than ThT, the conformation of G-quadruplex DNA was changed; in addition, ThT was dissociated from the aptamer-G31, and therefore a 'turn-on' to 'turn-off' detection principle was applied for kanamycin detection, which yielded reasonable sensitivity and selectivity. The detection range was 50-2000 nM, with a limit of detection of 1.05 nM. Our proposed method was thus successfully applied for kanamycin determination in pork, chicken, and beef samples, and satisfactory results were obtained.
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Affiliation(s)
- Chengke Wang
- College of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China.
| | - Jiangyu Li
- College of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
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Guo Y, Chen Q, Qi Y, Xie Y, Qian H, Yao W, Pei R. Label-free ratiometric DNA detection using two kinds of interaction-responsive emission dyes. Biosens Bioelectron 2017; 87:320-324. [DOI: 10.1016/j.bios.2016.08.041] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 08/03/2016] [Accepted: 08/13/2016] [Indexed: 11/17/2022]
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YAN J, HUANG X, LIU S, YANG J, YUAN Y, DUAN R, ZHANG H, HU X. A Simple and Sensitive Method for Auramine O Detection Based on the Binding Interaction with Bovin Serum Albumin. ANAL SCI 2016; 32:819-24. [DOI: 10.2116/analsci.32.819] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Jingjing YAN
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Xin HUANG
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Shaopu LIU
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Jidong YANG
- College of Chemical and Environmental Engineering, Chongqing Three Gorges University
| | - Yusheng YUAN
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Ruilin DUAN
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Hui ZHANG
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Xiaoli HU
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
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Guo Y, Xu L, Hong S, Sun Q, Yao W, Pei R. Label-free DNA-based biosensors using structure-selective light-up dyes. Analyst 2016; 141:6481-6489. [DOI: 10.1039/c6an01958g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Label-free biosensors (LFBs) have demonstrated great potential in cost-effective applications. This review collected the latest reported works which employed structure-selective nucleic acid dyes for the development of DNA-based LFBs.
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Affiliation(s)
- Yahui Guo
- State Key Laboratory of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- China
| | - Lijun Xu
- Key Laboratory of Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou 215123
| | - Shanni Hong
- Key Laboratory of Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou 215123
| | - Qingqing Sun
- State Key Laboratory of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- China
| | - Weirong Yao
- State Key Laboratory of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- China
| | - Renjun Pei
- Key Laboratory of Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou 215123
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