JOURNAL OF FLUORESCENCE
·
2024
·
IF 2.6
Zuo Pengli,Peng Jun,Yao Yuyang,Tan Wei,Cheng Lan,Zhang Jinyu,Lu Xiuhua
Due to the unique chemical and biomedical properties of carbon dots (CDs), they have increasingly obtained the attention in many research fields, for example, bioimaging, fluorescence sensing, and drug delivery, etc. Recently, it was found that, under light excitation, CDs can also be exploited as a novel photosensitizer to prepare reactive oxygen species (ROS), which expand their applications in the field of photodynamic therapy for cancer treatment. Nevertheless, the high cost and complex fabrication approach of CDs significantly limit their applications. To address this issue, bottom-up routes usually utilize sustainable and inexpensive carbon precursor as starting materials, employed N,N-dimethylformamide (DMF) or ethanol as an environmental-friendly solvent. Bottom-up approach was energy efficient, and the purification process was relatively simple by dialysis. Therefore, carbon dots (CDs) were facilely fabricated in a one-pot solvothermal process using 1-aminoanthraquinone as a precursor, and their application as photosensitizers for in vitro antitumor cells, especially photodynamic therapy (PDT) was established. Then the photophysical and nanoscale dimensions properties of the fabricated CDs were characterized via TEM, UV–visible, fluorescence, and FT-IR spectroscopy. The synthesized N-doped CDs can easily dissolve in water, possess very low biotoxicity, yellow-light emission (maximum peak at 587 nm). More importantly, PDT studies demonstrated that the obtained CDs possess a high singlet oxygen yield of 35%, and exhibit significant phototoxicity to cancer cells upon 635 nm laser irradiation. These studies highlight that N-doped CDs can be facilely synthesized from only one precursor, and are a potentially novel theranostic agent for in vivo PDT.
研究领域:
材料科学
·
生物医学工程
·
肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SYNTHETIC COMMUNICATIONS
·
2015
·
IF 0.929
Mingguang Zhu,Fafu Yang,Hongyu Guo,Congcong Li
Two novel triphenylene-aminoanthraquinone dimers 4a and 4b were synthesized by reacting triphenylene carboxyl derivatives 3a or 3b with 2-aminoanthracene-9,10-dione in yields of 80% and 78%, respectively. Their structures were confirmed by 1H NMR, electrospray ionization (ESI-MS), and elemental analysis. Their mesomorphic properties were studied by diffraction scanning calorimetry (DSC), polarizing optical microscopy (POM), and x-ray diffraction (XRD). The mesomorphic results suggested that they possess excellent mesophase properties. The investigation of fluorescence properties indicated that the strong cooperating fluorescence actions exist between two structural units. The fluorescence of dimers 4a and4b are seriously quenched due to the electron transfer from donor (triphenylene unit) to acceptor (aminoanthraquinone unit).
研究领域:
有机化学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF BIOCHEMICAL AND MOLECULAR TOXICOLOGY
·
2013
·Vol. 27
·期 5
·272-278
·
IF 1.596
Hongxu Yang,Wei Song,Mingyang Jing,Rutao Liu
By utilizing multispectrosopic techniques, the toxic interaction of 2-aminoanthraquinone (2-AAQ) with calf thymus deoxyribonucleic acid (ctDNA) was investigated in vitro under simulated physiological conditions. The experimental results proved that 2-AAQ has a toxic interaction with ctDNA. The binding capacity of DNA with 2-AAQ is diminishing as the pH value of system increasing in the optimization of experimental condition. Moreover we selected pH 7.4, which is nearly physiological condition to enhance the practical significance. According to the Stern–Volmer equation, the quenching was the static quenching process. And the quenching constant can be derived from the fluorescence quenching spectrogram. Ultraviolet absorption spectra and the change in the fluorescence intensity at different ionic strengths further indicated that there was electrostatic binding between 2-AAQ and ctDNA. The circular dichroism experiment showed that the DNA conformation varied from B to A conformation. The basic group enhanced after 2-AAQ embedding. The double helix is more compact, and the DNA conformation changes. © 2013 Wiley Periodicals, Inc. J BiochemMol Toxicol 27:272-278, 2013; View this article online at wileyonlinelibrary.com . DOI 10.1002/jbt.21487
研究领域:
生物化学
·
分子毒理学
·
药物相互作用
✓ 已验证
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
·
2018
·Vol. 19
·期 10
·2134-2138
·
IF 1.353
Wang Zongqian,Li Changlong,Zhang Hulin,Liu Zhi
Chromophore incorporated into the protein chains through residue modification on silk fibroin will be an important way to get new dyeing technology with improved color fastness. Herein, 1-aminoanthraquinone diazonium salt was prepared and used for the modified dyeing on tyrosine of silk fibroin. The silk after modified dyeing was measured by UV-Vis, FTIR, MS, 1 H-NMR, Data color, and other testing techniques. Interestingly, the resulting silk showed excellent rub and wash fastness. The enhanced color fastness is contributed by an electrophilic substitution reaction between 1- aminoanthraquinone diazonium salt and the ortho position of phenolic hydroxyl in tyrosine molecular. Moreover, the mechanical property of silk was protected effectively by the mild coupling modified dyeing, better than the traditional acid dyeing under high temperature for a long time. This facile strategy provides an alternative approach to silk dyeing and benefits the silk applications.
研究领域:
纺织科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Zixuan Xue,Pengrui Zhang,Qian Zhang,Chaochi Huang,Ciming Wang,Lianjing Mao,Xiaolong Zhou,Huiqun Ju,Jinhe Sun,Fei Shao,Xingwu Zou,Bo Li,Mixiang Qi,Yongzhong Jia,Yan Jing
This paper reported a novel chelating agent and a green precipitation-extraction separation strategy for lithium isotope enrichment. 1-Hydroxy-4-(p-toluidino) anthraquinone and anisole were used as chelating agent and diluent, respectively. Three phases including organic phase, aqueous phase and precipitation could be preparated. The experiment indicated that excess sodium hydroxide was helpful to promote the single-stage precipitation rate and equilibrium time. The isotope result indicated that 6 Li was concentrated in the aqueous phase and 7 Li was concentrated in precipitation phase. The maximum single-stage lithium isotope speration factor reached to 1.013 ± 0.001. By doing thermodynamic analysis of the reaction, the free energy change (ΔG), enthalpy change (ΔH) and entropy change(ΔS) of the separation process were −8.97 J mol −1 , −21.37 J mol −1 and −0.0438 J mol −1 K −1 at 283 K. The results of DFT simulation and wave function analysis indicated that a lithium ion combined with a chelating agent anion formed a stable six-member ring between two oxygen, which was more stable than sodium ions combined with chelating agent anions (the Gibbs free energy of the lithium ions reaction was more negative). As interaction analysis result showed, the Li-O bond in complex interaction was significantly stronger than the Li-O bond interaction in aqueous phase, which was the theroy that led to the enrichment of 7 Li in organic phase. In the activated carbon treatment experiment, it was found that part of lithium chelator solved in aqueous phase, which resulted in that the lithium abundance of aqueous phase hardly changed. In order to increase the abundance of 6 Li in aqueous phase, it is necessary to add adjuvant to reduce the water solubility of lithium chelate. Overall, an economical and environmental-friendly precipitation method with a certain application prospect for lithium isotope separation was proposed, and the direction of improving the separation performance was pointed out in this paper.
研究领域:
化学工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2020
·
IF 3.232
Simei Sun,Chaochao Qin,Hua Liu,Chao Jiang
Anthraquinone derivatives have been widely used as photocleavage agents and dyes. Here, photoinduced excited state intramolecular charge transfer (ICT) dynamics of 1-aminoanthraquinone in ethanol are studied by femtosecond transient absorption (fs-TA) spectroscopy and quantum chemical (QC) calculations. Four decay associated difference spectra and corresponding lifetime components were obtained by singular value decomposition and global fitting analysis from the fs-TA spectra. The QC calculations prove that the S 1 state has obvious ICT character. Planar ICT (PICT) and twisted ICT (TICT) reaction coordinates are observed. On the PICT coordinate, vibrational relaxation (VR) and intersystem crossing (ISC) processes are observed. The ISC efficiency is dependent on excitation wavelength, which elucidates that T′ 2 state participates in the ISC process on a higher-level than the S′ 1 state. On the TICT coordinate, the TICT process is dependent on excitation wavelength, which elucidates a direct experimental evidence of an energy barrier in excited state TICT potential energy.
研究领域:
化学
·
光化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2020
·
IF 8.247
Ning An,Zhuhang Shao,Zhen Guo,Jiao Xin,Yuanyuan He,Liwen Lv,Kefeng Xie,Xiuyan Dong,Yang Zhang,Zhongai Hu
In this work, we select a novel multi-redox poly (1, 5-diaminoanthraquinone) (PDAAQ) as electroactive material and Cetyltrimethylammonium bromide (CTAB) modified graphene oxide (CGO) as conductive substrate. Benefit from the excellent dispersion of CGO in organic polymerization medium and the abundant functional groups on the surface of CGO, 1, 5-diaminoanthraquinone (DAAQ) monomers may covalently graft on the conducting substrates and realize the directional growth of PDAAQ via the in-situ chemical oxidative polymerization. In three-electrode system, the optimization of PDAAQ/CGO electrode exhibits a high specific capacitance of 760 F g −1 at 1 A g −1 and superior electrochemical stability of 90.4% after 10 000 cycles. Most importantly, the electrochemical kinetic behavior of PDAAQ/CGO electrode is studied in detail. The result indicates that the energy storage process of PDAAQ/CGO is a synergistic result of diffusion-controlled process and capacitive effects, and the latter one is dominant. According to the simulation calculation of kinetic model , the capacitive contribution ratio of PDAAQ/CGO can be as high as 80.6% at a scan rate of 50 mV s −1 . Finally, the as-fabricated asymmetric supercapacitor (ASC) can deliver an energy density up to 41.1 W h kg −1 at a power density of 1000 W kg −1 , indicating a great potential application in high performance supercapacitors .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2016
·
IF 1.78
Tianyang Wang,Haiya Sun,Ting Lu,Krithanthi C. Weerasinghe,Dongzhi Liu,Wenping Hu,Xueqin Zhou,Lichang Wang,Wei Li,Lizeng Liu
It is proved that introducing the ethyl substituted group to 1-amino will enhance the intramolecular charge transfer ( ICT ) process of 1-N substituted anthraquinone derivatives. Bathochromic shift of the absorption maxima and diminished absorption intensity are observed with the increase of the electron donation abilities of the N-ethyl groups. Moreover, the intramolecular and intermolecular hydrogen bonds further intensify the ICT properties through introducing the end amino group. This work exhibits more effective acceptors than anthraquinone in novel multichromophore materials for organic solar cells and other optoelectronic devices.
研究领域:
有机化学
·
材料科学
·
光电子学
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Johar Zeb,Shuai Zhang,Muhammad Bilal Ahmed Qureshi,Manas Kumar Mandal,Qunhui Yuan,Wei Gan
Photoinduced intra and intermolecular charge transfer processes are vital in the solar energy conversion system. This research compared the photoinduced charge transfer processes of 1-aminoanthraquinone (AAQ) and 1,5-diaminoanthraquinone (DAAQ) molecules in ethanol using steady-state and transient absorption spectroscopic techniques, along with density functional theory (DFT) methods. The results revealed that AAQ shows greater intramolecular charge transfer (ICT) than the intermolecular charge transfer process. On the other hand, DAAQ, which has a lower solubility in ethanol and exhibits strong π-π stacking, displays higher intermolecular charge transfer processes than AAQ alongside its ICT process. The lifetimes for ICT and intersystem crossing (ISC) are shorter for DAAQ than AAQ molecules, representing their fast ICT and ISC processes. This work provides a comprehensive insight into the photoinduced intra- and intermolecular charge transfer processes of these two molecules, explaining their respective suitability as additives in photovoltaics and other optoelectronic devices due to their photoinduced charge transfer processes and structural planarity.
研究领域:
物理化学
·
材料科学
·
光化学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-10
·
IF 16.6
Lei Qinqin,Yuan Huiqing,Du Jiehao,Ming Mei,Yang Shuang,Chen Ya,Lei Jingxiang,Han Zhiji
The direct utilization of solar energy to convert CO 2 into renewable chemicals remains a challenge. One essential difficulty is the development of efficient and inexpensive light-absorbers. Here we show a series of aminoanthraquinone organic dyes to promote the efficiency for visible light-driven CO 2 reduction to CO when coupled with an Fe porphyrin catalyst. Importantly, high turnover numbers can be obtained for both the photosensitizer and the catalyst, which has not been achieved in current light-driven systems. Structure-function study performed with substituents having distinct electronic effects reveals that the built-in donor-acceptor property of the photosensitizer significantly promotes the photocatalytic activity. We anticipate this study gives insight into the continued development of advanced photocatalysts for solar energy conversion.
研究领域:
化学
·
材料科学
·
环境科学
·
太阳能转换
✓ 已验证
DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Juan Liu,Yingnan Qin,Meiqi Wang,Hengjun Liu,Tao Zheng,Jing Tian,Jing Wang
BiVO 4 -based materials have attracted extensive research as advanced photoanode for photogenerated cathodic protection. However, the performance of BiVO 4 -based photoanodes is greatly hindered by its weak charge migration and positive conduction band potential. Herein, poly-2,6-diaminoanthraquinone (PDAAQ)/Bi was grafted on BiVO 4 to improve the separation efficiency of photogenerated carriers and enhance the reducing ability of photogenerated electrons. Studies show that a type II heterojunction can be formed between PDAAQ and BiVO 4 , which accelerates the separation of photogenerated carriers at the interface. In addition, the Bi monomers anchored on BiVO 4 /PDAAQ then expand the light absorption range through the surface plasmon resonance effect. Consequently, the obtained BiVO 4 /PDAAQ/Bi photoanode exhibits a promising photocurrent density of 40 μA·cm -2 , while the photoinduced potential drop is 540 mV, which is approximately 1.4 times of BiVO 4 materials. These outcomes provide general ideas for the design of organic-inorganic heterozygous systems for achieving eco-friendly corrosion protection.
研究领域:
材料科学
·
光电化学
·
腐蚀防护
·
半导体异质结
·
纳米复合材料
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2017
·Vol. 7
·期 1
·1-9
·
IF 4.259
Zhang Song,Sun Simei,Zhou Miaomiao,Wang Lian,Zhang Bing
We investigated the mechanism of intramolecular charge transfer and the following radiationless dynamics of the excited states of 1-aminoanthraquinone using steady state and time-resolved absorption spectroscopy combined with quantum chemical calculations. Following photoexcitation with 460 nm, conformational relaxation via twisting of the amino group, charge transfer and the intersystem crossing (ISC) processes have been established to be the major relaxation pathways responsible for the ultrafast nonradiative of the excited S 1 state. Intramolecular proton transfer, which could be induced by intramolecular hydrogen bonding is inspected and excluded. Time-dependent density functional theory (TDDFT) calculations reveal the change of the dipole moments of the S 0 and S 1 states along the twisted coordinate of the amino group, indicating the mechanism of twisted intra-molecular charge transfer (TICT). The timescale of TICT is measured to be 5 ps due to the conformational relaxation and a barrier on the S 1 potential surface. The ISC from the S 1 state to the triplet manifold is a main deactivation pathway with the decay time of 28 ps. Our results observed here have yield a physically intuitive and complete picture of the photoinduced charge transfer and radiationless dynamics in anthraquinone pharmaceutial products.
研究领域:
物理化学
·
光化学
·
光谱学
·
理论化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）