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1
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Lu P, Lam JWY, Liu J, Jim CKW, Yuan W, Chan CYK, Xie N, Hu Q, Cheuk KKL, Tang BZ. Regioselective Alkyne Polyhydrosilylation: Synthesis and Photonic Properties of Poly(silylenevinylene)s. Macromolecules 2011. [DOI: 10.1021/ma201203w] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Ping Lu
- Fok Ying Tung Research Institute, The Hong Kong University of Science & Technology, Nansha, Guangzhou, China
- Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
| | - Jacky W. Y. Lam
- Fok Ying Tung Research Institute, The Hong Kong University of Science & Technology, Nansha, Guangzhou, China
- Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jianzhao Liu
- Fok Ying Tung Research Institute, The Hong Kong University of Science & Technology, Nansha, Guangzhou, China
- Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Cathy K. W. Jim
- Fok Ying Tung Research Institute, The Hong Kong University of Science & Technology, Nansha, Guangzhou, China
- Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Wangzhang Yuan
- Fok Ying Tung Research Institute, The Hong Kong University of Science & Technology, Nansha, Guangzhou, China
- Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Carrie Y. K. Chan
- Fok Ying Tung Research Institute, The Hong Kong University of Science & Technology, Nansha, Guangzhou, China
- Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ni Xie
- Fok Ying Tung Research Institute, The Hong Kong University of Science & Technology, Nansha, Guangzhou, China
- Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Qin Hu
- Fok Ying Tung Research Institute, The Hong Kong University of Science & Technology, Nansha, Guangzhou, China
- Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Kevin K. L. Cheuk
- The Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
| | - Ben Zhong Tang
- Fok Ying Tung Research Institute, The Hong Kong University of Science & Technology, Nansha, Guangzhou, China
- Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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2
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Liu J, Zhong Y, Lam JWY, Lu P, Hong Y, Yu Y, Yue Y, Faisal M, Sung HHY, Williams ID, Wong KS, Tang BZ. Hyperbranched Conjugated Polysiloles: Synthesis, Structure, Aggregation-Enhanced Emission, Multicolor Fluorescent Photopatterning, and Superamplified Detection of Explosives. Macromolecules 2010. [DOI: 10.1021/ma902432m] [Citation(s) in RCA: 200] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Jianzhao Liu
- Department of Chemistry, Institute of Molecular Functional Materials
- HKUST Fok Ying Tung Research Institute, Nansha, Guangzhou, China
| | - Yongchun Zhong
- Department of Physics, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
| | - Jacky W. Y. Lam
- Department of Chemistry, Institute of Molecular Functional Materials
- HKUST Fok Ying Tung Research Institute, Nansha, Guangzhou, China
| | - Ping Lu
- Department of Chemistry, Institute of Molecular Functional Materials
- HKUST Fok Ying Tung Research Institute, Nansha, Guangzhou, China
| | - Yuning Hong
- Department of Chemistry, Institute of Molecular Functional Materials
- HKUST Fok Ying Tung Research Institute, Nansha, Guangzhou, China
| | - Yong Yu
- Department of Chemistry, Institute of Molecular Functional Materials
- HKUST Fok Ying Tung Research Institute, Nansha, Guangzhou, China
| | - Yanan Yue
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Mahtab Faisal
- Department of Chemistry, Institute of Molecular Functional Materials
- HKUST Fok Ying Tung Research Institute, Nansha, Guangzhou, China
| | - Herman H. Y. Sung
- Department of Chemistry, Institute of Molecular Functional Materials
| | - Ian D. Williams
- Department of Chemistry, Institute of Molecular Functional Materials
| | - Kam Sing Wong
- Department of Physics, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
| | - Ben Zhong Tang
- Department of Chemistry, Institute of Molecular Functional Materials
- HKUST Fok Ying Tung Research Institute, Nansha, Guangzhou, China
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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Liu J, Zhong Y, Lu P, Hong Y, Lam JWY, Faisal M, Yu Y, Wong KS, Tang BZ. A superamplification effect in the detection of explosives by a fluorescent hyperbranched poly(silylenephenylene) with aggregation-enhanced emission characteristics. Polym Chem 2010. [DOI: 10.1039/c0py00046a] [Citation(s) in RCA: 256] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescence of a hyperbranched poly(silylenephenylene) is weakened with increasing quencher concentration in an exponential fashion, giving an extremely high quenching constant and making the polymer a highly sensitive chemosensor for explosive detection.
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Affiliation(s)
- Jianzhao Liu
- Department of Chemistry
- Institute of Molecular Functional Materials
- The Hong Kong University of Science & Technology (HKUST)
- Clear Water Bay
- Kowloon
| | | | - Ping Lu
- Department of Chemistry
- Institute of Molecular Functional Materials
- The Hong Kong University of Science & Technology (HKUST)
- Clear Water Bay
- Kowloon
| | - Yuning Hong
- Department of Chemistry
- Institute of Molecular Functional Materials
- The Hong Kong University of Science & Technology (HKUST)
- Clear Water Bay
- Kowloon
| | - Jacky W. Y. Lam
- Department of Chemistry
- Institute of Molecular Functional Materials
- The Hong Kong University of Science & Technology (HKUST)
- Clear Water Bay
- Kowloon
| | - Mahtab Faisal
- Department of Chemistry
- Institute of Molecular Functional Materials
- The Hong Kong University of Science & Technology (HKUST)
- Clear Water Bay
- Kowloon
| | - Yong Yu
- Department of Chemistry
- Institute of Molecular Functional Materials
- The Hong Kong University of Science & Technology (HKUST)
- Clear Water Bay
- Kowloon
| | | | - Ben Zhong Tang
- Department of Chemistry
- Institute of Molecular Functional Materials
- The Hong Kong University of Science & Technology (HKUST)
- Clear Water Bay
- Kowloon
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Yang R, Li K, Liu F, Li N, Zhao F, Chan W. 3,3‘,5,5‘-Tetramethyl-N-(9-anthrylmethyl)benzidine: A Dual-Signaling Fluorescent Reagent for Optical Sensing of Aliphatic Aldehydes. Anal Chem 2003; 75:3908-14. [PMID: 14572061 DOI: 10.1021/ac020789r] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new optical chemical sensor for continuous monitoring of aliphatic aldehydes has been proposed based on the reversible chemical reaction between a new sensing reagent, 3,3',5,5'-tetramethyl-N-(9-anthrylmethyl)benzidine (TMAB), and the analytes. TMAB, containing two receptors and two fluorescent reporters, can perform dual fluorescence responses corresponding to the reactions of hydrogen ion and carbonyl compound. When immobilized in a plasticized poly(vinyl chloride) membrane, TMAB extracts aliphatic aldehydes from aqueous solution into the bulk membrane phase and reacts with the analyte by forming a Schiff base. Since the extraction equilibrium and chemical reaction are accompanied by fluorescence increase of the sensing membrane, the chemical recognition process could be directly translated into an optical signal. At pH 3.20, the sensor exhibits a dynamic detection range from 0.017 to 4.2 mM n-butyraldehyde with a limit of detection of 0.003 mM. The forward response time (t95) of the sensor is 3-5 min, and the reverse response time is 5-7 min. The responses of the sensor toward different kinds of aldehydes and ketones depend on the lipophilicity and the reactivity of the analytes. Since the fluorescence enhancement of the sensing membrane at 296 nm/410 nm is only related to the formation of Schiff base, the measurement of aldehydes is independent of pH.
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Affiliation(s)
- Ronghua Yang
- Department of Chemical Biology, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
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Huang HM, Wang KM, Yang RH, Yang XH, Huang SS, Xiao D, Feng F. A sensitive optode membrane for berberine using conjugated polymer as sensing material. ANAL SCI 2002; 18:1111-5. [PMID: 12400656 DOI: 10.2116/analsci.18.1111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A new optode membrane for the sensitive determination of berberine based on fluorescence quenching of a conjugated polymer, poly(2,5-dimethoxy-phenyldiacetylene) (PDPA), is proposed. Incorporated in a membrane composed of plasticized poly(vinyl chloride) (PVC), the conjugated polymer exhibits better stability than those small sensing molecules regarding its excellent optical properties and lipophilic characteristics. Moreover, upon the introduction of a negatively charged lipophilic additive (tetraphenylborate salt) into a PVC membrane, the optode displayed enhanced sensitivity. In addition, satisfactory analytical sensing characteristics for determining beberine were obtained in terms of the selectivity, reversibility and reproducibility with a detecting range of between 7.5 x 10(-7) mol l(-1) and 7.5 x 10(-4) mol l(-1). The optode membrane has been applied to determine berberine in commercial tablets. The results showed a good agreement with those obtained by the pharmacopoeial method.
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Affiliation(s)
- Hong-Mei Huang
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China
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