- A facile AIE fluorescent probe for broad range of pH detection
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Detection of pH has received more and more attention in various fields. Currently, a hot research topic is focused on how to use a facile fluorescent dye to achieve a wide range and accurate pH detection. Herein, we reported a simple fluorescence probe for pH detection with wide range and accuracy based on the Aggregation-Induced Emission (AIE) characteristics. The probe 2-oxo-N’-(2-(quinolin-8-yloxy)acetyl)-2H-chromene-3-carbo- hydrazide (CHBQ) as comprised of coumarin and quinoline as the electron donor and acceptor, N, N′-diformylhydrazine bond as the linking group, respectively. The probe displays good AIE characteristics under water content up to 99% in mixed medium. Furthermore, it can identify acid and base as fast as 30 s by color change of the solution under UV365 nm lamp. The detection of the probe for pH was hardly interfered with other ions. What's more, the probe CHBQ can be designed to be a broad range test paper of pH detection, which has a great practical value.
- Wang, Xiaoju,Wang, Haoping,Niu, Yan,Wang, Yunxia,Feng, Liheng
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- Novel fluorescent risedronates: Synthesis, photodynamic inactivation and imaging of Bacillus subtilis
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Novel fluorescently-labeled conjugates of risedronate were synthesized using an epoxide linker, enabling conjugation of risedronate via its pyridyl nitrogen with the aromatic succinimidyl esters. The compounds were characterized by using 1H NMR, 13C NMR, 31P NMR, UV-vis and fluorescence emission spectroscopies. Biological activity assays showed that the conjugates 14 and 15 exhibited photodynamic inactivation of Bacillus subtilis (ATCC 6633) with 91% and 47% bacterial lethality at 10 μM upon visible light irradiation, respectively. Both 14 and 15 could be also used for fluorescence imaging of Bacillus subtilis.
- Zhou, Li-Sheng,Yang, Ke-Wu,Feng, Lei,Xiao, Jian-Min,Liu, Cheng-Cheng,Zhang, Yi-Lin,Crowder, Michael W.
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supporting information
p. 949 - 954
(2013/03/14)
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- Sialyltransferase inhibitors: Consideration of molecular shape and charge/hydrophobic interactions
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In order to evaluate the importance of molecular shape of inhibitor molecules and the charge/H-bond and hydrophobic interactions, we synthesized three types of molecules and tested them against a sialyltransferase. The first type of compounds were designe
- Kumar, Rishi,Nasi, Ravindranath,Bhasin, Milan,Khieu, Nam Huan,Hsieh, Margaret,Gilbert, Michel,Jarrell, Harold,Zou, Wei,Jennings, Harold J.
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