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Z-E isomerization of azobenzene based amphiphilic poly(urethane-urea)s: Influence on the dynamic mechanical properties and the effect of the self-assembly in solution on the isomerization kinetics. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109583] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Ansari M, Bera R, Mondal S, Das N. Triptycene-Derived Photoresponsive Fluorescent Azo-Polymer as Chemosensor for Picric Acid Detection. ACS OMEGA 2019; 4:9383-9392. [PMID: 31460028 PMCID: PMC6648835 DOI: 10.1021/acsomega.9b00497] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 05/16/2019] [Indexed: 05/08/2023]
Abstract
Two new triptycene-based azobenzene-functionalized polymers (TBAFPs) have been synthesized using the well-known Pd-catalyzed Sonogashira cross-coupling polycondensation reaction between 2,6-diethynyltriptycene and (meta or para) dibromo-azobenzenes. Enhancement of the fluorescent emission intensity was observed upon trans → cis isomerization of -N=N- linkage in TBAFPs. The cis-lifetime of TBAFP1 is rather long (greater than 2 days). The resulting materials were tested as a potential chemosensor for the detection of picric acid (PA)-a water pollutant as well as chemical constituent of explosives used in warfare. PA was found to interact strongly with TBAFPs, which led to significant quenching of the latter's fluorescence emission intensities. The binding constants are in the order of 105 M-1. TBAFPs were also able to detect PA in nanomolar concentrations.
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Affiliation(s)
- Mosim Ansari
- Department of Chemistry, Indian
Institute of Technology Patna, 801106 Bihar, India
| | - Ranajit Bera
- Department of Chemistry, Indian
Institute of Technology Patna, 801106 Bihar, India
| | - Snehasish Mondal
- Department of Chemistry, Indian
Institute of Technology Patna, 801106 Bihar, India
| | - Neeladri Das
- Department of Chemistry, Indian
Institute of Technology Patna, 801106 Bihar, India
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Cao T, Zhao F, Da Z, Qiu F, Yang D, Guan Y, Cao G, Zhao Z, Li J, Guo X. Synthesis of Amino-Functionalized Graphene Oxide/Azobenzene Polyimide and its Simulation of Optical Switches. ACTA ACUST UNITED AC 2017. [DOI: 10.1515/zpch-2016-0801] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this work, an amino-functionalized graphene oxide (AFGO) was synthesized by graphene oxide (GO) and ethylene diamine. A novel amino-functionalized graphene oxide/azobenzene polyimide (AFGO/ACPI) was synthesized with AFGO, azobenzene chromophore and pyromellitic dianhydride (PMDA). The structure, mechanical and thermal property of AFGO/ACPI were characterized and measured by fourier transform infrared, UV-visible spectroscopy, near-infrared spectrum, thermogravimetric analysis and differential scanning calorimetry. To obtain the refractive index of AFGO/ACPI at different temperature and wavelength (532 nm, 650 nm and 850 nm), the attenuated total reflection (ATR) method was used to measure, and thermo optic coefficients (dn/dT) were −7.22×10−4 (532 nm), −6.20×10−4 (650 nm) and −5.84×10−4 (850 nm) °C−1, respectively. The transmission loss of AFGO/ACPI thin film was surveyed using the CCD digital imaging devices and the value was 0.167 dB/cm. According to the thermo-optic effect of AFGO/ACPI film, the 1×2 Y-branch and 2×2 Mach-Zehnder optical switches were simulated. The results showed that the power consumptions of the 1×2 Y-branch and 2×2 Mach-Zehnder optical switches were only 0.63 mW and 1.45 mW. The response time was about 0.5 ms, and compared to the normal polymeric thermo-optic switch, it can improve the response time and contribute to researches of optical switches.
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Affiliation(s)
- Tianlin Cao
- School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang , 212013, China
| | - Fanyu Zhao
- School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang , 212013, China
| | - Zulin Da
- School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang , 212013, China
- Jiangsu Key Laboratory for Environment Functional Materials , Suzhou University of Science and Technology , Suzhou 215009 , China
| | - Fengxian Qiu
- School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang , 212013, China , Tel.: +86 511 88791800, Fax: +86 511 88791800
| | - Dongya Yang
- Jingjiang College , Jiangsu University , Zhenjiang 212013 , China
| | - Yijun Guan
- Department of Physics , Jiangsu University , Zhenjiang , 212013, China
| | - Guorong Cao
- Department of Physics , Jiangsu University , Zhenjiang , 212013, China
| | - Zerun Zhao
- School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang , 212013, China
| | - Jiaxin Li
- School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang , 212013, China
| | - Xiaotong Guo
- School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang , 212013, China
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Cai Z, Yu Q, Zheng Y, Shi X, Wang X, Cui Z, Shi Z, Chen C, Zhang D. Effect of fluoro-polycarbonates containing aliphatic/aromatic segments on the characteristics of thermo-optic waveguide devices. RSC Adv 2017. [DOI: 10.1039/c7ra01850a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of photoresists was prepared to investigate the effects of flexibility on the properties of thermo-optic waveguide devices.
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Affiliation(s)
- Zhenzhen Cai
- State Key Laboratory of Supramolecular Structure and Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Qixuan Yu
- State Key Laboratory of Supramolecular Structure and Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Yang Zheng
- State Key Lab on Integrated Opto-electronics
- Jilin University Region
- Changchun 130012
- People's Republic of China
| | - Xiaoyu Shi
- State Key Laboratory of Supramolecular Structure and Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Xuesong Wang
- State Key Laboratory of Supramolecular Structure and Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Zhanchen Cui
- State Key Laboratory of Supramolecular Structure and Materials
- Jilin University
- Changchun 130012
- People's Republic of China
- Department of Chemistry and Pharmacy
| | - Zuosen Shi
- State Key Laboratory of Supramolecular Structure and Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Changming Chen
- State Key Lab on Integrated Opto-electronics
- Jilin University Region
- Changchun 130012
- People's Republic of China
| | - Daming Zhang
- State Key Lab on Integrated Opto-electronics
- Jilin University Region
- Changchun 130012
- People's Republic of China
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Noval chiral azobenzene-containing polyurethanes: synthesis, optical properties and simulation comparison of two kind of polymeric thermo-optic switches. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0831-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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