Fluorescent Ag nanoclusters prepared in aqueous poly(acrylic acid-co-maleic acid) solutions: a spectroscopic study of their excited state dynamics, size and local environment
文献信息
Manika Dandapat, Debabrata Mandal
Stable, fluorescent Ag nanoclusters were prepared in aqueous solutions of Na+ salt of the carboxylate-rich polymer poly(acrylic acid-co-maleic acid) under brief spells of UV irradiation. The nanoclusters were nearly spherical, with diameters within 1.90 ± 0.50 nm, but displayed a prominent red edge excitation shift (REES) of fluorescence upon exciting within the visible absorption band, indicating heterogeneity of energy level distributions. Spectroscopic studies revealed that irrespective of whether the nanoclusters are excited in their UV or visible absorption bands, their fluorescence always ensues from the same manifold of emissive states, with a broad range of fluorescence lifetimes from ∼150 fs to 1 ns.
相关文献
Investigation of an SPR biosensor for determining the influence of connexin 43 expression on the cytotoxicity of cisplatin
Yijia Wang, Shiwu Zhang, Chunze Zhang, Zhenying Zhao, Xiaoli Zheng, Lihua Xue, Jun Liu, X.-C. Yuan
DOI: 10.1039/C6AN00264A
The origin of the band at around 730 cm−1 in the SERS spectra of bacteria: a stable isotope approach
Patrick Kubryk, Reinhard Niessner, Natalia P. Ivleva
DOI: 10.1039/C6AN00306K
Electrochemical sensors for rapid diagnosis of pathogens in real time
Olja Simoska, Keith J. Stevenson
DOI: 10.1039/C9AN01747J
Solvent-independent determination of heteroatom protonation states from NMR spectra by differential deuterium isotope shifts
Sebastian Tassoti, Martin Walenta, Alexander Pöcheim, Kathrin Buchberger, Olaf Kunert, Klaus Zangger
DOI: 10.1039/C9AN01364D
Nano-analytical characterization of endogenous minerals in healthy placental tissue: mineral distribution, composition and ultrastructure
Elena Tsolaki, Louis Didierlaurent, Samuel Staubli, Robert Zboray, Antonia Neels, Dörthe Dietrich, Pius Manser, Lotus May Desbiolles, Sebastian Leschka, Simon Wildermuth, Sandro Lehner, Pascale Chavatte-Palmer, Wolfram Jochum, Peter Wick, Tina Bürki-Turnherr, Tina Fischer, René Hornung, Sergio Bertazzo
DOI: 10.1039/C9AN01312A
A novel logic gate based on liquid-crystals responding to the DNA conformational transition
Fubing Xiao, Hui Tan, Yan Wu, Shuzhen Liao, Zhaoyang Wu, Guoli Shen, Ruqin Yu
DOI: 10.1039/C6AN00504G
Emerging paper microfluidic devices
Bingbing Gao, Xin Li, Yaqiong Yang, Jianlin Chu, Bingfang He
DOI: 10.1039/C9AN01275C
Correction: Shell-isolated nanoparticle-enhanced Raman spectroscopy study of the adsorption behaviour of DNA bases on Au(111) electrode surfaces
Bao-Ying Wen, Xi Jin, Yue Li, Ya-Hao Wang, Chao-Yu Li, Miao-Miao Liang, Rajapandiyan Panneerselvam, Qing-Chi Xu, De-Yin Wu, Zhi-Lin Yang, Jian-Feng Li, Zhong-Qun Tian
DOI: 10.1039/C6AN90033J
A fluorescent probe based on aggregation-induced emission for hydrogen sulfide-specific assaying in food and biological systems
Lingfeng Xu, Ling Ni, Lihe Sun, Fang Zeng, Shuizhu Wu
DOI: 10.1039/C9AN01582E
您可能还喜欢
什么是2-氨基戊烷(CAS号:63493-28-7)?
2-氨基戊烷,又名pentan-2-amine,是一种有机化合物,分子式为C5H11NH2。它是一种无色透明液体,有氨味。该化合物在工业和研究中有一定的应用。
反式-4-[4-[[[5-[(3,4-二氟苯基)氨基]-1,3,4-恶二唑-2-基]羰基]氨基]苯基]环己烷乙酸(CAS号:892489-52-0)的物理化学性质是什么?
该化合物为白色固体,分子量为552.31 g/mol。它在水中溶解度较低,在有机溶剂如乙腈、乙酸乙酯中有较好的溶解性。该化合物具有较高的化学稳定性,对酸和碱具有...
如何处理含有Pyrotinib dimaleate(CAS号:1397922-61-0)的废料?
处理含有Pyrotinib dimaleate 的废料时,应遵循当地的法规要求。首先,收集废料并进行分类,确保没有与其他化学品混合。然后,采取适当的物理和化学处...
在合成中是否有4-(5-5-乙基-1,2,4-噁二唑-3-基)苯甲酸乙酯(CAS号:1166756-79-1)的替代品?
在合成过程中,可以考虑使用其他结构类似的化合物作为替代品,例如苯甲酸酯类化合物,如2-乙基-5-甲基噁二唑基苯甲酸乙酯等。这些替代品可能具有相似的化学性质,但在...
如何处理含有1-((叔丁氧基羰基)氨基)环丁烷甲酸甲酯(CAS号:880166-10-9)的废料?
处理含有该化合物的废液时,应先确保其完全反应并转化为无害物质。对于未反应的化合物,建议采用中和处理后进行蒸馏回收,剩余物可使用化学氧化法或焚烧法进行无害化处理。...
2-({[3,5-二(三氟甲基)苯基]磺酰基}氨基)-4-(甲基硫代)丁酸甲酯(CAS号:175202-21-8)的市场或研究趋势如何?
目前该化合物主要应用于药物合成领域,尤其在开发新型抗癌药物方面具有潜在应用。随着制药行业的持续发展,对于高效、低毒的合成中间体需求增加,预计该化合物的研究和应用...
N,N-乙烯双(碘乙酰胺)(CAS号:7250-43-3)的物理化学性质是什么?
N,N-乙烯双(碘乙酰胺)是一种白色或类白色固体,易溶于乙醇、丙酮等有机溶剂,但在水中溶解度较低。该化合物具有较高的反应活性,可以与其他含有活性氢的化合物发生酰...
7-Fluoro-1H-spiro[furo[3,4-c]pyridine-3,4'-piperidine](CAS号:1283090-73-2)通常如何合成?
该化合物可以通过环合反应合成,首先合成吡啶和哌啶的衍生物,然后在合适的条件下进行环合反应得到目标化合物。常用的催化剂包括某些金属盐类,产率一般在70%-90%之...
处理3-乙酰滇乌碱(CAS号:80787-51-5)时应注意哪些实验室安全事项?
在处理3-乙酰滇乌碱时,应穿戴适当的个人防护装备(PPE),如实验服、手套(丁腈手套或PVC手套)、护目镜和口罩。实验应在通风橱中进行,以减少吸入或皮肤接触的风...
如何储存2-溴-5-硝基-4-羧酸(CAS号:1053655-82-5)?
2-溴-5-硝基-4-羧酸应存放在阴凉、干燥、通风良好的地方,远离火源和热源。避免与还原剂、碱性物质接触。储存容器应密封,防止吸湿。
来源期刊
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










![2-Methyl-2-propanyl (2E)-5-chloro-2-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzylidene]pentanoate structure 2-Methyl-2-propanyl (2E)-5-chloro-2-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzylidene]pentanoate structure](https://cnstatic.chemtradehub.com/structs/122/1225232-42-7-ee03.webp)
![(3-{[4-(Aminomethyl)-6-(trifluoromethyl)-2-pyridinyl]oxy}phenyl)[(3R,4R)-3-fluoro-4-hydroxy-1-pyrrolidinyl]methanone structure (3-{[4-(Aminomethyl)-6-(trifluoromethyl)-2-pyridinyl]oxy}phenyl)[(3R,4R)-3-fluoro-4-hydroxy-1-pyrrolidinyl]methanone structure](https://cnstatic.chemtradehub.com/structs/200/2007885-39-2-affc.webp)


![1-(2-Chlorophenyl)-6-[(2S)-3,3,3-trifluoro-2-methylpropyl]-1,7-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one structure 1-(2-Chlorophenyl)-6-[(2S)-3,3,3-trifluoro-2-methylpropyl]-1,7-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one structure](https://cnstatic.chemtradehub.com/structs/794/794568-91-5-0c34.webp)