Home

Citation: ZHU Hui, WANG Mei, CHENG Ling-Li, ZHU Rong-Rong, SUN Xiao-Yu, YAO Si-De, WU Qing-Sheng, WANG Shi-Long. Photoionization and Photoexcitation Mechanisms of Salicylic Acid[J]. Acta Physico-Chimica Sinica, ;2010, 26(01): 87-93. doi: 10.3866/PKU.WHXB20091225 shu

Photoionization and Photoexcitation Mechanisms of Salicylic Acid

1.
School of Life Science and Technology, Tongji University, Shanghai 200092, P. R. China; Department of Chemisty, Tongji University, Shanghai 200092, P. R. China

Received Date: 26 May 2009
Available Online: 13 November 2009

Salicylic acid (SA), the active ingredient of aspirin, is effective in various medical treatments such as cosmetology and anticancer therapy. We investigated the photophysical and photochemical behavior of SA using 266 nm laser flash photolysis. Results demonstrate that SA can be photoionized and photoexcited by 266 nm photons to give SA+· and 3SA*. SA is highly photosensitive and can be photoionized via a monophotonic process with a quantum yield of 0.21. Under the aerobic conditions we find that in cells, hydrated electrons easily combine with oxygen to generate O-·20 , which can kill cancer cells. SA+·can be converted into neutral radicals by deprotonation and its pKa value is 2.95. SA also can be oxidized by SO-·4 and the rate constant is 2.28×109 L·mol-1·s-1, which further confirms the photoionization ability of SA. In addition, SA can be excited to 3SA*, which then generates 1O2*. This research provides introductory theory for the potential of SA to be used as an anticancer drug.
- Salicylic acid,
- Laser flash photolysis,
- Photoionization,
- Quantumyield,
- Anticancer mechainism
1. [1]
  Zian Lin , Yingxue Jin . Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) for Disease Marker Screening and Identification: A Comprehensive Experiment Teaching Reform in Instrumental Analysis. University Chemistry, 2024, 39(11): 327-334. doi: 10.12461/PKU.DXHX202403066
2. [2]
  Fengmiao Yu , Yang Sheng , Chanyue Li , Bao Li . The Three Lives of Aspirin. University Chemistry, 2024, 39(9): 115-121. doi: 10.12461/PKU.DXHX202402033
3. [3]
  Xinting XIONG , Zhiqiang XIONG , Panlei XIAO , Xuliang NIE , Xiuying SONG , Xiuguang YI . Synthesis, crystal structures, Hirshfeld surface analysis, and antifungal activity of two complexes Na(Ⅰ)/Cd(Ⅱ) assembled by 5-bromo-2-hydroxybenzoic acid ligands. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1661-1670. doi: 10.11862/CJIC.20240145
4. [4]
  Xudong Liu , Huili Fan , Junping Xiao , Min Yang , Yan Li . Teaching Approaches to the A_E + A_N Mechanism of Electrophilic Addition Reactions between Olefins and Inorganic Acids in Organic Chemistry. University Chemistry, 2025, 40(7): 367-372. doi: 10.12461/PKU.DXHX202409041
5. [5]
  Weilai Yu , Chuanbiao Bie . Unveiling S-Scheme Charge Transfer Mechanism. Acta Physico-Chimica Sinica, 2024, 40(4): 2307022-0. doi: 10.3866/PKU.WHXB202307022
6. [6]
  Jingjing QING , Fan HE , Zhihui LIU , Shuaipeng HOU , Ya LIU , Yifan JIANG , Mengting TAN , Lifang HE , Fuxing ZHANG , Xiaoming ZHU . Synthesis, structure, and anticancer activity of two complexes of dimethylglyoxime organotin. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1301-1308. doi: 10.11862/CJIC.20240003
7. [7]
  Chun-Lin Sun , Yaole Jiang , Yu Chen , Rongjing Guo , Yongwen Shen , Xinping Hui , Baoxin Zhang , Xiaobo Pan . Construction, Performance Testing, and Practical Applications of a Home-Made Open Fluorescence Spectrometer. University Chemistry, 2024, 39(5): 287-295. doi: 10.3866/PKU.DXHX202311096
8. [8]
  Chi Zhang , Yi Xu , Xiaopeng Guo , Zian Jie , Ling Li . 五彩斑斓的秘密——物质显色机理. University Chemistry, 2025, 40(6): 266-275. doi: 10.12461/PKU.DXHX202407061
9. [9]
  Huasen Lu , Shixu Song , Qisen Jia , Guangbo Liu , Luhua Jiang . Advances in Cu₂O-based Photocathodes for Photoelectrochemical Water Splitting. Acta Physico-Chimica Sinica, 2024, 40(2): 2304035-0. doi: 10.3866/PKU.WHXB202304035
10. [10]
  Hong RAO , Yang HU , Yicong MA , Chunxin LÜ , Wei ZHONG , Lihua DU . Synthesis and in vitro anticancer activity of phenanthroline-functionalized nitrogen heterocyclic carbene homo- and heterobimetallic silver/gold complexes. Chinese Journal of Inorganic Chemistry, 2024, 40(12): 2429-2437. doi: 10.11862/CJIC.20240275
11. [11]
  Xiaoxuan Yu , Wukun Liu . Practice of Ideological and Political Education in Medicinal Chemistry for Pharmacy Administration Major: A Case Study on the Discovery of Cisplatin’s Anticancer Function. University Chemistry, 2025, 40(4): 408-414. doi: 10.12461/PKU.DXHX202405200
12. [12]
  Junqing WEN , Ruoqi WANG , Jianmin ZHANG . Regulation of photocatalytic hydrogen production performance in GaN/ZnO heterojunction through doping with Li and Au. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 923-938. doi: 10.11862/CJIC.20240243
13. [13]
  Xingchao Zhao , Xiaoming Li , Ming Liu , Zijin Zhao , Kaixuan Yang , Pengtian Liu , Haolan Zhang , Jintai Li , Xiaoling Ma , Qi Yao , Yanming Sun , Fujun Zhang . Photomultiplication-Type All-Polymer Photodetectors and Their Applications in Photoplethysmography Sensor. Acta Physico-Chimica Sinica, 2025, 41(1): 100007-0. doi: 10.3866/PKU.WHXB202311021
14. [14]
  Pengcheng Yan , Peng Wang , Jing Huang , Zhao Mo , Li Xu , Yun Chen , Yu Zhang , Zhichong Qi , Hui Xu , Henan Li . Engineering Multiple Optimization Strategy on Bismuth Oxyhalide Photoactive Materials for Efficient Photoelectrochemical Applications. Acta Physico-Chimica Sinica, 2025, 41(2): 2309047-0. doi: 10.3866/PKU.WHXB202309047
15. [15]
  Zhenlin Zhou , Siyuan Chen , Yi Liu , Chengguo Hu , Faqiong Zhao . A New Program of Voltammetry Experiment Teaching Based on Laser-Scribed Graphene Electrode. University Chemistry, 2024, 39(2): 358-370. doi: 10.3866/PKU.DXHX202308049
16. [16]
  Tianlong Zhang , Jiajun Zhou , Hongsheng Tang , Xiaohui Ning , Yan Li , Hua Li . Virtual Simulation Experiment for Laser-Induced Breakdown Spectroscopy (LIBS) Analysis. University Chemistry, 2024, 39(6): 295-302. doi: 10.3866/PKU.DXHX202312049
17. [17]
  Junjian Wang , Qingquan Yu , Shunyao Liu , Yuke Chen , Xiaoyu Liu , Guodong Li , Xiaoyan Liu , Hong Liu , Weijia Zhou . Laser-Induced Carbonization of Hydroxyapatite Sandwich Paper for Inkless Printing. Acta Physico-Chimica Sinica, 2024, 40(4): 2304024-0. doi: 10.3866/PKU.WHXB202304024
18. [18]
  Xiaosong PU , Hangkai WU , Taohong LI , Huijuan LI , Shouqing LIU , Yuanbo HUANG , Xuemei LI . Adsorption performance and removal mechanism of Cd(Ⅱ) in water by magnesium modified carbon foam. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1537-1548. doi: 10.11862/CJIC.20240030
19. [19]
  Heng Zhang . Determination of All Rate Constants in the Enzyme Catalyzed Reactions Based on Michaelis-Menten Mechanism. University Chemistry, 2024, 39(4): 395-400. doi: 10.3866/PKU.DXHX202310047
20. [20]
  Jiajie Li , Xiaocong Ma , Jufang Zheng , Qiang Wan , Xiaoshun Zhou , Yahao Wang . Recent Advances in In-Situ Raman Spectroscopy for Investigating Electrocatalytic Organic Reaction Mechanisms. University Chemistry, 2025, 40(4): 261-276. doi: 10.12461/PKU.DXHX202406117

Get Citation

PDF

XML

Metrics

PDF Downloads(1439)
Abstract views(2977)
HTML views(33)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return