1
|
Hu Y, Jia Y, Yang Y, Liu Y. Controllable DNA nanodevices regulated by logic gates for multi-stimulus recognition. RSC Adv 2023; 13:9003-9009. [PMID: 36950078 PMCID: PMC10025943 DOI: 10.1039/d3ra00295k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 03/13/2023] [Indexed: 03/22/2023] Open
Abstract
DNA biosensors have attracted considerable attention due to their great potential in environmental monitoring and medical diagnosis. Despite the great achievements, the single function and uncontrollability of the sensors restrict their further application. Therefore, it is necessary to construct controllable nanodevices with both sensing and responding capabilities to external stimuli. Herein, we develop a strategy to engineer structure-switching biosensors which can respond to external stimuli while preserving the sensing capability. The engineered nanodevice consists of an actuation module and a sensing module. Initially, the sensing module is disabled by a blocker strand which acts as an allosteric switch. Once the stimuli-responsive actuation module displaces the blocker DNA, the sensing module is activated. Based on the strategy, the engineered nanodevice could recognize both the target and external stimuli. As a demonstration of this strategy, a controllable Hg2+ sensor was designed, in which a 'YES', 'AND', and 'OR' logic gate is employed as the actuation module respectively to facilitate recognition of oligonucleotide inputs. The modular nature of the proposed strategy makes it easily generalizable to other structure-switching sensors. As a demonstration of this, we successfully apply it to the ATP sensor. The proposed strategy has potential in the fields of programmable biosensing, disease diagnosis, DNA computing, and intelligent nanodevices.
Collapse
Affiliation(s)
- Yingxin Hu
- School of Information Science and Technology, Shijiazhuang Tiedao University Shijiazhuang 050043 P. R. China
| | - Yufeng Jia
- School of Management, Shijiazhuang Tiedao University Shijiazhuang 050043 P. R. China
| | - Yuefei Yang
- School of Information Science and Technology, Shijiazhuang Tiedao University Shijiazhuang 050043 P. R. China
| | - Yanjun Liu
- School of Information Science and Technology, Shijiazhuang Tiedao University Shijiazhuang 050043 P. R. China
| |
Collapse
|
2
|
Zhang C, Zheng R, Li S, Yang K, Tai S, Tao Y, Zhang S, Zhang K. Using a dual-emission Sm( iii)-macrocycle as the perceptive lab-on-a-molecule chemosensor toward selective and discriminative detection of nitroaromatic explosives. NEW J CHEM 2023. [DOI: 10.1039/d3nj00627a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
A dual-emission Sm(iii)-macrocycle Sm-2l is designed as the perceptive lab-on-a-molecule toward selective and discriminative detection of nitroaromatic explosives by statistical analysis.
Collapse
Affiliation(s)
- Chengjian Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Ruijie Zheng
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Sichen Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Kang Yang
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Shengdi Tai
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Yinsong Tao
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Shishen Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Kun Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| |
Collapse
|
3
|
Yao QF, Zhu QY, Bu ZQ, Liu QY, Quan MX, Huang WT. DNA nanosensing systems for tunable detection of metal ions and molecular crypto-steganography. Biosens Bioelectron 2022; 195:113645. [PMID: 34571483 DOI: 10.1016/j.bios.2021.113645] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 09/10/2021] [Accepted: 09/13/2021] [Indexed: 12/14/2022]
Abstract
Various sensing platforms based on molecular or nanosystems are widely exploited through molecular diversity and specific recognition. However, it is extremely challenging to develop systems with tunable sensing ability and utilize the systems as information carriers/covers for communication and safety. Herein, DNA nanosensing systems based on cobalt oxyhydroxide (CoOOH) nanosheets were constructed for tunable detection and valence distinction of metal ions, molecular crypto-steganography, and information coding. CoOOH nanosheets absorb fluorescence-labeled single-stranded DNA with different bases and lengths, resulting in fluorescence quenching. The binding priority of bases with CoOOH nanosheets was guanine (G) > cytosine (C) > adenine (A) ≈ thymine (T) and the short chain excelled long chain. Due to the differences in the interaction among CoOOH, DNA, metal ions and variability of DNA bases, various DNA-CoOOH nanosystems have significantly different selective response patterns (that is selectivity) to metal ions and tunable linear ranges to Fe3+, Hg2+, Cr3+. Interestingly, by utilizing their molecular diversity, recognition, selective patterns, DNA-CoOOH sensing systems can be served as doubly cryptographic and steganographic systems to implement information encoding, encryption, and hiding and to reversely improve the selectivity of metal ions. This study provides an idea and platform for adjustable detection and valence distinction of metal ions, and gives a set of "molecular programming languages" for designing intelligent programmable sensing and molecular information communication and safety systems.
Collapse
Affiliation(s)
- Qing Feng Yao
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
| | - Qiu Yan Zhu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
| | - Zhen Qi Bu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
| | - Qing Yu Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
| | - Min Xia Quan
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
| | - Wei Tao Huang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, 410081, PR China.
| |
Collapse
|
4
|
Bai C, He S, Hu HM, Zeng H, Zou F, Wang JJ. Europium(III) Complex-Functionalized SiO 2@mTiO 2 Nanospheres for Al 3+-Modulated Multicolor Emission. NANOMATERIALS 2021; 11:nano11112886. [PMID: 34835650 PMCID: PMC8618485 DOI: 10.3390/nano11112886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 10/19/2021] [Accepted: 10/25/2021] [Indexed: 11/23/2022]
Abstract
A europium(III) hybrid material Eu(tta)3bpdc-SiO2@mTiO2 (Htta = 2-thenoyltrifluoroacetone, H2bpdc = 2,2′-bipyridine-3,3′-dicarboxylic acid) was successfully designed and synthesized by the covalent grafting complex Eu(tta)3bpdc to SiO2@mTiO2 core–shell nanosphere. The FT-IR, PXRD, XPS, TEM, HRTEM, SAED, TGA and PL were performed to characterize these materials. The results indicate that core–shell nanosphere structure and anatase crystallites of SiO2@mTiO2 are retained well after grafting the europium complex. Hybrid material Eu(tta)3bpdc-SiO2@mTiO2 displays uniform nanosphere structure, bright red color and long lifetime, which can serve as a multicolor emission material modulated by using Al3+ ions via the cation exchange approach under a single-wavelength excitation. To the best of our knowledge, this work is the first multicolor emissive sensor for Al3+ ions based on the lanthanide hybrid material.
Collapse
Affiliation(s)
- Chao Bai
- Key Laboratory of New Energy & New Functional Materials, Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan’an University, Yan’an 716000, China;
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, China; (S.H.); (H.Z.); (F.Z.)
| | - Shi He
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, China; (S.H.); (H.Z.); (F.Z.)
| | - Huai-Ming Hu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, China; (S.H.); (H.Z.); (F.Z.)
- Correspondence: (H.-M.H.); (J.-J.W.)
| | - Hui Zeng
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, China; (S.H.); (H.Z.); (F.Z.)
| | - Feng Zou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, China; (S.H.); (H.Z.); (F.Z.)
| | - Ji-Jiang Wang
- Key Laboratory of New Energy & New Functional Materials, Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan’an University, Yan’an 716000, China;
- Correspondence: (H.-M.H.); (J.-J.W.)
| |
Collapse
|
5
|
ZEYBEL L, KÖSE DA. Novel mixed ligand coordination compounds of some rare earth metal cations containing acesulfamato/N,N-diethylnicotinamide. Turk J Chem 2021; 45:1004-1015. [PMID: 34707430 PMCID: PMC8520393 DOI: 10.3906/kim-2012-47] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 04/26/2021] [Indexed: 02/02/2023] Open
Abstract
The mixed ligand coordination compounds containing acesulfamato and N,N -diethylnicotinamide biomolecules of some rare earth metal cations (Eu3+, Tb3+, Ho3+, Er3+ and Yb3+) were synthesized, and their structural properties were investigated. Possible structural formulas have been proposed by determining the chemical composition of molecules (elemental analysis), binding properties (infrared spectroscopy, mass analysis, solid-state UV-vis spectroscopy), thermal degradation properties (TGA / DTA curves). Based on the data collected, it is suggested that rare earth metal cations with a 3+ oxidation state have sextet coordination. The geometries of the structures were thought to be distorted octahedral. The charge balance of the coordination sphere is balanced by a monoanionic acesulfamato located outside the coordination sphere. When the thermal behaviours of the complexes were examined, it was determined that the compounds with Eu3+, Tb3+, and Yb3+ metal cations contained one hydrate water outside the coordination sphere. Hydrate waters do not exist in the Ho3+ and Er3+ metal cation-centred complexes. At the end of the thermal decomposition analysis of all complex structures, it was determined that they leave the relevant metal oxides in the reaction vessels as final decomposition products.
Collapse
Affiliation(s)
- Leriman ZEYBEL
- Department of Chemistry, Science and Arts Faculty, Hitit University, ÇorumTurkey
| | - Dursun Ali KÖSE
- Department of Chemistry, Science and Arts Faculty, Hitit University, ÇorumTurkey
| |
Collapse
|
6
|
Ma C, Tang R, Wang Y, Ma S, Tang S, Zhang J, Ou J. One-step preparation of cyclen-containing hydrophilic polymeric monolithic materials via epoxy-amine ring-opening reaction and their application in enrichment of N-glycopeptides. Talanta 2021; 225:122049. [PMID: 33592771 DOI: 10.1016/j.talanta.2020.122049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 01/02/2023]
Abstract
Considering the special structure of 1,4,7,10-tetraazacyclododecane (cyclen) which is easy to form complexes with ions, it is beneficial to achieve particular selectivity. Cyclen was selected as a precursor to react with triglycidyl isocyanurate (TGIC), and a novel kind of hydrophilic polymeric monolithic material was facilely prepared via epoxy-amine ring-opening reaction in the presence of a binary porogenic system of acetonitrile (ACN) and polyethylene glycol. The resulting poly (TGIC-co-cyclen) monolithic column was used to separate both nonpolar alkylbenzenes using mobile phase of ACN/H2O (35/65, v/v) and polar phenolic compounds and anilines under the mobile phase of ACN/H2O (60/40, v/v) in reversed-phase capillary liquid chromatography (cLC). It should be pointed that the monolith was further used for separation of a mixture of toluene, DMF, acrylamide and thiourea under the mobile phase of ACN/H2O (95/5, v/v) by hydrophilic interaction chromatography (HILIC). These results indicated that the poly (TGIC-co-cyclen) column exhibited mixed-mode retention mechanism. As a result, the prepared monolithic material was employed for enrichment of glycosylated peptides from the tryptic digest of human immunoglobulin G (IgG) and serum protein tryptic digests. A total of 531 N-glycopeptides and 329 N-glycosylation sites, mapped to 166 glycoproteins, were identified from 2 μL human serum digest. The results indicated the prepared monolith had ability for enriching N-glycopeptides from complex biological samples.
Collapse
Affiliation(s)
- Chen Ma
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Ruizhi Tang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yan Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shujuan Ma
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
| | - Shouwan Tang
- Department of Chemistry, School of Pharmaceutical and Materials Engineering, Taizhou University, Linhai, 318000, China.
| | - Jing Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Junjie Ou
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| |
Collapse
|
7
|
Zhang K, Huang Y, Shen YJ, Zhang LF, Ma S, Chen TT, Zheng Z, Zhang S, Li B. Imine bond transformation of a dynamic Sm(III) macrocycle-based chemosensor: The indirect approach for detecting cyanuric chloride. Anal Chim Acta 2021; 1144:34-42. [PMID: 33453795 DOI: 10.1016/j.aca.2020.11.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 11/19/2020] [Accepted: 11/21/2020] [Indexed: 01/24/2023]
Abstract
Herein, we report our strategy to develop the efficient chemosensor and real-time monitoring technique for cyanuric chloride (TCT) detection. A luminescent macrocyclic mononuclear Sm(III) complex Sm-2k bearing with two dynamic imine bonds has been constructed via the template synthesis between dialdehyde H2Qk and matched diamine 1,2-bis(2-aminoethoxy)ethane. Sensing experiments reveal that complex Sm-2k exhibits the turn-off fluorescent and colorimetric response for TCT in CH3OH. It is especially encouraging that this optical sensing process is not only rapid within 60 s but also high-efficient in the presence of TCT analogues as well as sensitive with the low limit of detection (LOD, 1.74 μM) and wide linear sensing range. Mechanism studies demonstrate that TCT sensing is mainly based on the imine bond transformation of probe Sm-2k, which is due to the increased acidity induced by TCT. Meanwhile, a smartphone-based analytical method was developed to make complex Sm-2k accessible for the real-time TCT detection by RGB value outputs. It is believed that this work can shed some constructive lights on design of chemosensors and convenient detection technique for highly reactive analytes.
Collapse
Affiliation(s)
- Kun Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China.
| | - Yan Huang
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Yin-Jing Shen
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Lin-Feng Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Shuang Ma
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Ting-Ting Chen
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Ziqiang Zheng
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Shishen Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Benxia Li
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| |
Collapse
|
8
|
Bai C, Fu XY, Hu HM, He S, Wang X, Xue GL. Construction of visible luminescent lanthanide coordination compounds with different stacking modes based on a carboxylate substituted terpyridyl derivative ligand. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119550] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
9
|
Zhang K, Chen TT, Feng CC, Shen YJ, Yang ZR, Zhu C. Luminescent Sm(III) complex bearing dynamic imine bonds as a multi-responsive fluorescent sensor for F - and PO 43- anions together with Zn 2+ cation in water samples. Anal Chim Acta 2020; 1118:52-62. [PMID: 32418604 DOI: 10.1016/j.aca.2020.04.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 04/08/2020] [Accepted: 04/13/2020] [Indexed: 12/12/2022]
Abstract
We have designed and synthesized a new luminescent mononuclear samarium (III) complex Sm-2h based on the [1 + 1] Schiff-base macrocycle H2L2h, derived from the cyclocondensation reaction between dialdehyde and diamine precursors, and its exact architecture is determined to be [Sm(HL2h) (NO3)2]. The sensing ability of complex Sm-2h is carefully evaluated for various common inorganic ions in solution. It is shown that complex Sm-2h is a multi-responsive fluorimetric sensor with high selectivity for F- and PO43- anions together with Zn2+ cation. The sensing process is rapid within 60 s for F- and PO43- ions and 300 s for Zn2+ ion. Further detailed responsive investigations suggest that its sensing behavior has excellent linear relationship between the fluorescence intensity (or absorption value) and ion concentration. The limit of detection (LOD) for sensing F-, PO43- and Zn2+ ions are as low as 2.61 μM (2.94 μM), 1.92 μM (1.64 μM) and 5.67 μM (3.53 μM), respectively, verified by fluorimetric (or colorimetric) titration experiments. ESI mass spectra prove that these efficient detections originate from the structure collapse of sensor Sm-2h because of the ion-induced imine bond breakage. Moreover, sensor Sm-2h shows excellent sensing performances for F-, PO43- and Zn2+ ions in real water samples, and we also have developed a convenient method to detect these three ions by use of the sensor impregnated test paper strips, providing rapid and distinguishable fluorimetric color changes. Therefore, the macrocyclic Sm(III) complex Sm-2h could be regarded as a valuable candidate for monitoring F-, PO43- and Zn2+ ions in practical applications.
Collapse
Affiliation(s)
- Kun Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China.
| | - Ting-Ting Chen
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Cheng-Cheng Feng
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Yin-Jing Shen
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Zhuo-Ran Yang
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Chaoying Zhu
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| |
Collapse
|