201
|
Chen H, Feng Y, Deng GJ, Liu ZX, He YM, Fan QH. Fluorescent Dendritic Organogels Based on 2-(2′-Hydroxyphenyl)benzoxazole: Emission Enhancement and Multiple Stimuli-Responsive Properties. Chemistry 2015; 21:11018-28. [DOI: 10.1002/chem.201500849] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Indexed: 12/27/2022]
|
202
|
Biswas A, Banerjee A. Sunlight induced unique morphological transformation in graphene based nanohybrids: appearance of a new tetra-nanohybrid and tuning of functional property of these nanohybrids. SOFT MATTER 2015; 11:4226-4234. [PMID: 25892272 DOI: 10.1039/c5sm00359h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, sunlight was used for in situ preparation of gel-based various nanohybrid systems. A naturally occurring amino acid, l-phenylalanine derivative formed a hydrogel with graphene oxide (GO)/reduced graphene oxide (rGO) at physiological pH. This hydrogel was then used in the presence of silver ions and diffuse sunlight to form initially a tri-nanohybrid system consisting of six atom silver nanoclusters, nanosheets, and nanofibers. Interestingly, a time-dependent morphological transformation occurs in this nanohybrid system to form one tri-nanohybrid to another tri-nanohybrid with the appearance of a novel, nanoscopic intermediate tetra-nanohybrid system consisting of four distinctly different nanomaterials (nanofibers, nanosheets, nanospheres, and nanoparticles). UV-Vis and fluorescence spectroscopic analyses, transmission electron microscopic, X-ray photo electron spectroscopic and MALDI-TOF mass spectral analyses with time were applied to characterise these morphological transformations in gel based nanohybrids. Time-dependent X-ray photo electron spectroscopic (XPS) analysis was used to uncover the mechanism for the transformation of silver nanoclusters to silver nanoparticles in the hydrogel matrix. Sunlight was used to trigger time-dependent structural transformation in the nanohybrid systems. Interestingly, one of these tri-nanohybrid systems (silver nanoparticles containing rGO based hydrogel) shows a catalytic property of reducing nitroarenes to aminoarenes and the catalytic efficiency can be modulated by changing the size of the silver nanoparticles with time in diffuse sunlight. The mechanism for different catalytic activities for different hybrids with varying size of silver nanoparticles has also been deciphered.
Collapse
Affiliation(s)
- Abhijit Biswas
- Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India.
| | | |
Collapse
|
203
|
Mallet C, Bolduc A, Bishop S, Gautier Y, Skene WG. Unusually high fluorescence quantum yield of a homopolyfluorenylazomethine--towards a universal fluorophore. Phys Chem Chem Phys 2015; 16:24382-90. [PMID: 25300605 DOI: 10.1039/c4cp01176g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The absolute fluorescence quantum yield (Φfl) of a polyfluorenyl azomethine homopolymer was measured as a function of solvent polarity. The solvent induced and temperature dependent fluorescence of the homopolymer were also investigated and they were compared to the corresponding monomer and copolymer. The Φfl of the homopolymer was consistent (45-70%), regardless of solvent polarity with Stokes shifts up to 7460 cm(-1) in ethanol. In contrast, the Φfl of its corresponding monomer decreased from 60% in ethanol to 1% in toluene, whereas a Φfl < 5% for its analogous copolymer was measured. Moderate fluorescence yields (Φfl ≈ 25%) were also possible in thin film when co-depositing the homopolymer with PMMA. Cryofluorescence was used to probe the excited state deactivation modes. Deactivation by internal conversion was found to compete with fluorescence. The fluorescence deactivation pathways of the homopolymer and its corresponding monomer could be suppressed at 77 K, resulting in fluorescence turn-on. Both fluorophores were found to detect nitroaromatics.
Collapse
Affiliation(s)
- Charlotte Mallet
- Laboratoire de Caractérisation Photophysique des Matériaux Conjugués, Département de Chimie, Pavillon JA Bombardier, Université de Montréal, CP 6128, succ. Centre-ville, Montréal, Québec, Canada H3C 3J7
| | | | | | | | | |
Collapse
|
204
|
Sandhu S, Kumar R, Singh P, Mahajan A, Kaur M, Kumar S. Ultratrace Detection of Nitroaromatics: Picric Acid Responsive Aggregation/Disaggregation of Self-Assembled p-Terphenylbenzimidazolium-Based Molecular Baskets. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10491-500. [PMID: 25915852 DOI: 10.1021/acsami.5b01970] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
1-(p-Terphenyl)-benzimidazolium (TRIPOD-TP) molecules undergo self-assembly to form rodlike structures in aqueous medium, as shown by field-emission scanning electron microscopy, transmission electron microscopy, and dynamic light scattering studies. Upon gradual addition of picric acid (PA), these aggregates undergo an aggregation/disaggregation process to complex morphological structures (10(-12)-10(-10) M PA) and spherical aggregates (10(-9)-10(-8) M PA). These spherical aggregates undergo further dissolution to well-dispersed spheres between 10(-7)-10(-6) M PA. During fluorescence studies, these aggregates demonstrate superamplified fluorescence quenching (>97%) in the presence of 10(-5) to 0.2 equiv of the probe concentration, an unprecedented process with PA. The lowest detection limits by solution of TRIPOD-TP are 5 × 10(-13) PA, 50 × 10(-12) M 2,4-dinitrophenol, 200 × 10(-12) M 2,4,6-trinitrotoluene, and 1 nM 1-chloro-2,4-dinitrobenzene. Paper strips dipped in the solution of TRIPOD-TP demonstrate quantitative fluorescence quenching between 10(-17) and 10(-6) M PA using front-surface steady state studies and can measure as low as 2.29 × 10(-20) g/cm(2) PA.
Collapse
|
205
|
Nagarkar SS, Desai AV, Ghosh SK. A fluorescent metal-organic framework for highly selective detection of nitro explosives in the aqueous phase. Chem Commun (Camb) 2015; 50:8915-8. [PMID: 24975591 DOI: 10.1039/c4cc03053b] [Citation(s) in RCA: 340] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Selective and sensitive nitro explosive detection by a porous luminescent metal-organic framework has been reported. For the first time MOF based selective explosive detection in the presence of other nitro analytes in aqueous media is demonstrated.
Collapse
Affiliation(s)
- Sanjog S Nagarkar
- Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, Pune, India 411008.
| | | | | |
Collapse
|
206
|
Swamy P CA, Thilagar P. Polyfunctional Lewis Acids: Intriguing Solid-State Structure and Selective Detection and Discrimination of Nitroaromatic Explosives. Chemistry 2015; 21:8874-82. [DOI: 10.1002/chem.201500727] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Indexed: 12/13/2022]
|
207
|
Thirumalai R, Mukhopadhyay RD, Praveen VK, Ajayaghosh A. A slippery molecular assembly allows water as a self-erasable security marker. Sci Rep 2015; 5:9842. [PMID: 25940779 PMCID: PMC4419532 DOI: 10.1038/srep09842] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 02/03/2015] [Indexed: 01/25/2023] Open
Abstract
Protection of currency and valuable documents from counterfeit continues to be a challenge. While there are many embedded security features available for document safety, they are not immune to forgery. Fluorescence is a sensitive property, which responds to external stimuli such as solvent polarity, temperature or mechanical stress, however practical use in security applications is hampered due to several reasons. Therefore, a simple and specific stimuli responsive security feature that is difficult to duplicate is of great demand. Herein we report the design of a fluorescent molecular assembly on which water behaves as a self-erasable security marker for checking the authenticity of documents at point of care. The underlying principle involves the disciplined self-assembly of a tailor-made fluorescent molecule, which initially form a weak blue fluorescence (λem = 425 nm, Φf = 0.13) and changes to cyan emission (λem = 488 nm,Φf = 0.18) in contact with water due to a reversible molecular slipping motion. This simple chemical tool, based on the principles of molecular self-assembly and fluorescence modulation, allows creation of security labels and optically masked barcodes for multiple documents authentication.
Collapse
Affiliation(s)
- Rajasekaran Thirumalai
- Photosciences and Photonics Group, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695019, India
| | - Rahul Dev Mukhopadhyay
- Photosciences and Photonics Group, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695019, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695019, India
| | - Vakayil K Praveen
- Photosciences and Photonics Group, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695019, India
| | - Ayyappanpillai Ajayaghosh
- Photosciences and Photonics Group, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695019, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695019, India
| |
Collapse
|
208
|
Ma Y, Ma H, Yang Z, Ma J, Su Y, Li W, Lei Z. Methyl Cinnamate-Derived Fluorescent Rigid Organogels Based on Cooperative π-π Stacking and C═O···π Interactions Instead of H-Bonding and Alkyl Chains. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:4916-4923. [PMID: 25876135 DOI: 10.1021/acs.langmuir.5b00275] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A new class of rigid low-molecular-mass organic gelators (LMOGs) was synthesized by McMurry and Heck reactions, and their gels and photophysical properties were investigated. The LMOGs lacked alkyl chain and H-bonding units and produced good gelation ability in selected mixed organic solvents facilitated by cooperative π-π stacking and C═O···π interactions. Sensitive gel-sol transformation by molecular aggregation and disaggregation was easily achieved upon heating and cooling. H-H 2D NOESY and X-ray diffraction (XRD) patterns showed the π-π stacking and C═O···π interactions between tiny methyl acrylate groups as "tails". Importantly, this soft interaction model offers a useful tool for the future design and construction of supramolecular structures. At present, the LMOGs reported herein offer a sensitive gel-formation ability and aggregation-induced emission (AIE) property and thus have promising application potentials as functional soft matter in amorphous materials, photoelectric materials, and so on.
Collapse
Affiliation(s)
- Yuan Ma
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China
| | - Hengchang Ma
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China
| | - Zenming Yang
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China
| | - Jun Ma
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China
| | - Yuhu Su
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China
| | - Wenfeng Li
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China
| | - Ziqiang Lei
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China
| |
Collapse
|
209
|
Mallet C, Moussallem C, Faurie A, Allain M, Gohier F, Skene WG, Frère P. Rational Topological Design for Fluorescence Enhancement upon Aggregation of Distyrylfuran Derivatives. Chemistry 2015; 21:7944-53. [DOI: 10.1002/chem.201500023] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Indexed: 12/27/2022]
|
210
|
Acharyya K, Mukherjee PS. Postsynthetic Exterior Decoration of an Organic Cage by Copper(I)-Catalysed A3-Coupling and Detection of Nitroaromatics. Chemistry 2015; 21:6823-31. [DOI: 10.1002/chem.201406581] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Indexed: 01/31/2023]
|
211
|
Jamil AK, Izake EL, Sivanesan A, Fredericks PM. Rapid detection of TNT in aqueous media by selective label free surface enhanced Raman spectroscopy. Talanta 2015; 134:732-738. [DOI: 10.1016/j.talanta.2014.12.022] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 11/25/2014] [Accepted: 12/18/2014] [Indexed: 12/27/2022]
|
212
|
You L, Zha D, Anslyn EV. Recent Advances in Supramolecular Analytical Chemistry Using Optical Sensing. Chem Rev 2015; 115:7840-92. [PMID: 25719867 DOI: 10.1021/cr5005524] [Citation(s) in RCA: 624] [Impact Index Per Article: 69.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Lei You
- †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 35002, People's Republic of China
| | - Daijun Zha
- †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 35002, People's Republic of China
| | - Eric V Anslyn
- ‡Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| |
Collapse
|
213
|
Abstract
Efficient sensing of trace amount nitroaromatic (NAC) explosives has become a major research focus in recent time due to concerns over national security as well as their role as environment pollutants. NO2 -containing electron-deficient aromatic compounds, such as picric acid (PA), trinitrotoluene (TNT), and dinitrotoluene (DNT), are the common constituents of many commercially available chemical explosives. In this article, we have summarized our recent developments on the rational design of electron-rich self-assembled discrete molecular sensors and their efficacy in sensing nitroaromatics both in solution as well as in vapor phase. Several π-electron-rich fluorescent metallacycles (squares, rectangles, and tweezers/pincers) and metallacages (trigonal and tetragonal prisms) have been synthesized by means of metal-ligand coordination-bonding interactions, with enough internal space to accommodate electron-deficient nitroaromatics at the molecular level by multiple supramolecular interactions. Such interactions subsequently result in the detectable fluorescence quenching of sensors even in the presence of trace quantities of nitroaromatics. The fascinating sensing characteristics of molecular architectures discussed in this article may enable future development of improved sensors for nitroaromatic explosives.
Collapse
|
214
|
Singha DK, Majee P, Mondal SK, Mahata P. A Eu-Doped Y-Based Luminescent Metal-Organic Framework as a Highly Efficient Sensor for Nitroaromatic Explosives. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403097] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
215
|
Chen M, Wei C, Wu X, Khan M, Huang N, Zhang G, Li L. Metallogels self-assembled from linear rod-like platinum complexes: influence of the linkage. Chemistry 2015; 21:4213-7. [PMID: 25644237 DOI: 10.1002/chem.201406296] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Indexed: 12/18/2022]
Abstract
Two linear rod-like platinum complexes, which only differed in the linkage, were prepared. They both self-assemble into metallogels in nonpolar solvents; however, a very big contrast was observed. Unexpectedly, a much weaker gel was acquired upon replacing the ester linkage by an amide group. The intermolecular hydrogen bonding offered by the amide motif leads to a different stacking fashion and mechanism. The results demonstrated herein contribute to the rational design of metallogels as well as other functional supramolecular materials.
Collapse
Affiliation(s)
- Mingming Chen
- National Synchrotron Radiation Lab and College of Nuclear Science and Technology, University of Science and Technology of China, No. 96, JinZhai Road, Hefei, Anhui, 230026 (P. R. China), Fax: (+) 86-551-5141078
| | | | | | | | | | | | | |
Collapse
|
216
|
Chang X, Wang G, Yu C, Wang Y, He M, Fan J, Fang Y. Studies on the photochemical stabilities of some fluorescent films based on pyrene and pyrenyl derivatives. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2014.10.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
217
|
Ma J, Lv L, Zou G, Zhang Q. Fluorescent porous film modified polymer optical fiber via "click" chemistry: stable dye dispersion and trace explosive detection. ACS APPLIED MATERIALS & INTERFACES 2015; 7:241-249. [PMID: 25487515 DOI: 10.1021/am505950c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this paper, we report a facile strategy to fabricate fluorescent porous thin film on the surface of U-bent poly(methyl methacrylate) optical fiber (U-bent POF) in situ via "click" polymerization for vapor phase sensing of explosives. Upon irradiation of evanescent UV light transmitting within the fiber under ambient condition, a porous film (POSS-thiol cross-linking film, PTCF) is synthesized on the side surface of the fiber by a thiol-ene "click" reaction of vinyl-functionalized polyhedral oligomeric silsesquioxanes (POSS-V8) and alkane dithiols. When vinyl-functionalized porphyrin, containing four allyl substituents at the periphery, is added into precursors for the polymerization, fluorescence porphyrin can be covalently bonded into the cross-linked network of PTCF. This "fastened" way reduces the aggregation-induced fluorescence self-quenching of porphyrin and enhances the physicochemical stability of the porous film on the surface of U-bent POF. Fluorescent signals of the PTCF/U-bent POF probe made by this method exhibit high fluorescence quenching toward trace TNT and DNT vapor and the highest fluorescence quenching efficiency is observed for 1, 6-hexanedimercaptan-based film. In addition, because of the presence of POSS-V8 with multi cross-linkable groups, PTCF exhibits well-organized pore network and stable dye dispersion, which not only causes fast and sensitive fluorescence quenching against vapors of nitroaromatic compounds, but also provides a repeatability of the probing performance.
Collapse
Affiliation(s)
- Jiajun Ma
- CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Polymer Science and Engineering, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China , Hefei, Anhui 230026, China
| | | | | | | |
Collapse
|
218
|
Shi ZQ, Guo ZJ, Zheng HG. Two luminescent Zn(ii) metal–organic frameworks for exceptionally selective detection of picric acid explosives. Chem Commun (Camb) 2015; 51:8300-3. [DOI: 10.1039/c5cc00987a] [Citation(s) in RCA: 204] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Two luminescent thiophene-containing Zn–MOFs exhibit very highly sensitive and selective detection of picric acid compared to other nitroaromatic explosives.
Collapse
Affiliation(s)
- Zhi-Qiang Shi
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210093
| | - Zi-Jian Guo
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210093
| | - He-Gen Zheng
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210093
| |
Collapse
|
219
|
Pan J, Tang F, Ding A, Kong L, Yang L, Tao X, Tian Y, Yang J. A small-molecule chemosensor for the selective detection of 2,4,6-trinitrophenol (TNP). RSC Adv 2015. [DOI: 10.1039/c4ra07957d] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A pyridine-based receptor (L) was synthesised and characterized, which can serve as a small-molecule sensor for the specific recognition of TNP.
Collapse
Affiliation(s)
- Jianting Pan
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Fang Tang
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Aixiang Ding
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Lin Kong
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Longmei Yang
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Xutang Tao
- State Key Laboratory Materials
- Shandong University
- Jinan 502100
- P.R. China
| | - Yupeng Tian
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Jiaxiang Yang
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| |
Collapse
|
220
|
Sarkar S, Dutta S, Ray C, Dutta B, Chowdhury J, Pal T. A two-component hydrogelator from citrazinic acid and melamine: synthesis, intriguing role of reaction parameters and iodine adsorption study. CrystEngComm 2015. [DOI: 10.1039/c5ce01001b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Melamine and citrazinic acid, upon solid-state grinding, produced a two-component gelator which selectively gelates water or a mixed-solvent system having water as one of the solvents. The dried hydrogel was porous and shows adsorption and storage of molecular iodine.
Collapse
Affiliation(s)
- Sougata Sarkar
- Department of Chemistry
- Ramakrishna Mission Vivekananda Centenary College
- Kolkata 700118, India
| | - Soumen Dutta
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302, India
| | - Chaiti Ray
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302, India
| | - Bipan Dutta
- Department of Physics
- Sammilani Mahavidyalaya
- Kolkata 700075, India
| | | | - Tarasankar Pal
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302, India
| |
Collapse
|
221
|
Ghosh D, Luwang MN. p-Aminobenzoic acid (pABA) sensitization of LaF3:Tb3+ nanoparticles and its applications in the detection of explosive materials. RSC Adv 2015. [DOI: 10.1039/c4ra15304a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
“A novel approach for detecting highly explosive aromatic nitro compounds utilizing pABA sensitised terbium (Tb3+) doped spherical LaF3 nanoparticles.”
Collapse
Affiliation(s)
- Debasish Ghosh
- Chemical Engineering and Process Development Division, National Chemical Laboratory
- Pune-411008, India
| | - Meitram Niraj Luwang
- Chemical Engineering and Process Development Division, National Chemical Laboratory
- Pune-411008, India
| |
Collapse
|
222
|
Yu R, Lin N, Yu W, Liu XY. Crystal networks in supramolecular gels: formation kinetics and mesoscopic engineering principles. CrystEngComm 2015. [DOI: 10.1039/c5ce00854a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
223
|
Hussain S, Malik AH, Afroz MA, Iyer PK. Ultrasensitive detection of nitroexplosive – picric acid via a conjugated polyelectrolyte in aqueous media and solid support. Chem Commun (Camb) 2015; 51:7207-10. [DOI: 10.1039/c5cc02194d] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cationic polymer PMI detects picric acid at ppt levels via combination of ground state charge transfer, RET and electrostatic interactions. A paper strip test and a contact mode sensing platform using chitosan film confirm the method as simple, portable and cost-effective.
Collapse
Affiliation(s)
- Sameer Hussain
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Akhtar Hussain Malik
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Mohammad Adil Afroz
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Parameswar Krishnan Iyer
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
- Centre for Nanotechnology
| |
Collapse
|
224
|
Xue P, Wang P, Yao B, Sun J, Gong P, Zhang Z, Lu R. Photocurrent generation of nanofibers constructed using a complex of a gelator and a fullerene derivative. RSC Adv 2015. [DOI: 10.1039/c5ra15236d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two-component xerogel film constructed by a carboxylic acid derivative and fullerene derivative could generate large photocurrent under light irradiation.
Collapse
Affiliation(s)
- Pengchong Xue
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- PR China
| | - Panpan Wang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- PR China
| | - Boqi Yao
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- PR China
| | - Jiabao Sun
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- PR China
| | - Peng Gong
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- PR China
| | - Zhenqi Zhang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- PR China
| | - Ran Lu
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- PR China
| |
Collapse
|
225
|
Senthamizhan A, Uyar T. Electrospun Fluorescent Nanofibers for Explosive Detection. ELECTROSPINNING FOR HIGH PERFORMANCE SENSORS 2015. [DOI: 10.1007/978-3-319-14406-1_8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
226
|
Xiao B, Zhang Q, Huang C, Li Y. Luminescent Zn(ii)–terpyridine metal–organic gel for visual recognition of anions. RSC Adv 2015. [DOI: 10.1039/c4ra14759f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Luminescent metal–organic gels (MOGs), which is comprised of zinc ion and Hcptpy, can widely differentiate anions in two steps, which is visible with the naked eye.
Collapse
Affiliation(s)
- Bowen Xiao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Qiqi Zhang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Chengzhi Huang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Yuanfang Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| |
Collapse
|
227
|
Singha DK, Majee P, Mondal SK, Mahata P. Visible detection of explosive nitroaromatics facilitated by a large stokes shift of luminescence using europium and terbium doped yttrium based MOFs. RSC Adv 2015. [DOI: 10.1039/c5ra22599j] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Two lanthanide doped highly luminescent MOFs have been synthesized and characterized. The MOFs are highly efficient for the detection of trace amount of explosive nitroaromatics by visible colour change.
Collapse
Affiliation(s)
| | - Prakash Majee
- Department of Chemistry
- Siksha-Bhavana
- Visva-Bharati University
- Santiniketan-731235
- India
| | - Sudip Kumar Mondal
- Department of Chemistry
- Siksha-Bhavana
- Visva-Bharati University
- Santiniketan-731235
- India
| | | |
Collapse
|
228
|
Pore VS, Agalave SG, Pharande SG, Patil PA, Kotmale AS. Bile acid hydrazides: gelation, structural, physical and spectroscopic properties. NEW J CHEM 2015. [DOI: 10.1039/c4nj01352b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Novel bile acid hydrazides are synthesized and temperature dependent NMR, IR and rheological experiments are done for understanding the role of intra-molecular hydrogen bonding leading to gelation.
Collapse
Affiliation(s)
- Vandana S. Pore
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pashan
- India
| | - Sandip G. Agalave
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pashan
- India
| | | | - Prashant A. Patil
- Polymer Science and Engineering Division
- CSIR-National Chemical Laboratory
- Pashan
- India
| | - Amol S. Kotmale
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pashan
- India
| |
Collapse
|
229
|
Singha DK, Mahata P. Luminescent coordination polymer–fullerene composite as a highly sensitive and selective optical detector for 2,4,6-trinitrophenol (TNP). RSC Adv 2015. [DOI: 10.1039/c5ra02833g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A blue emitting coordination polymer–fullerene composite as a highly sensitive and selective luminescence quenching based optical detector for 2,4,6-trinitrophenol.
Collapse
Affiliation(s)
- Debal Kanti Singha
- Department of Condensed Matter Physics and Material Sciences
- S. N. Bose National Centre for Basic Sciences
- Kolkata-700098
- India
| | - Partha Mahata
- Department of Condensed Matter Physics and Material Sciences
- S. N. Bose National Centre for Basic Sciences
- Kolkata-700098
- India
| |
Collapse
|
230
|
Lin N, Liu XY. Correlation between hierarchical structure of crystal networks and macroscopic performance of mesoscopic soft materials and engineering principles. Chem Soc Rev 2015. [DOI: 10.1039/c5cs00074b] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The performance of soft materials is correlated with the hierarchical crystal network structure by topology, correlation length, symmetry/ordering, and strength.
Collapse
Affiliation(s)
- Naibo Lin
- Research Institute for Biomimetics and Soft Matter
- Xiamen University
- Xiamen
- China
| | - Xiang Yang Liu
- Research Institute for Biomimetics and Soft Matter
- Xiamen University
- Xiamen
- China
- Department of Physics
| |
Collapse
|
231
|
Jha SK, Ekinci Y, Agio M, Löffler JF. Towards deep-UV surface-enhanced resonance Raman spectroscopy of explosives: ultrasensitive, real-time and reproducible detection of TNT. Analyst 2015; 140:5671-7. [DOI: 10.1039/c4an01719f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We report ultrasensitive and label-free detection of 2,4,6-trinitrotoluene (TNT) deposited by drop coating using deep-ultraviolet surface-enhanced resonance Raman scattering (DUV-SERRS).
Collapse
Affiliation(s)
- Shankar K. Jha
- Laboratory of Metal Physics and Technology
- Department of Materials
- ETH Zürich
- Switzerland
| | - Yasin Ekinci
- Laboratory of Metal Physics and Technology
- Department of Materials
- ETH Zürich
- Switzerland
- Laboratory of Micro- and Nanotechnology
| | - Mario Agio
- National Institute of Optics (INO-CNR) and European Laboratory for Nonlinear Spectroscopy (LENS)
- 50019 Sesto Fiorentino (FI)
- Italy
| | - Jörg F. Löffler
- Laboratory of Metal Physics and Technology
- Department of Materials
- ETH Zürich
- Switzerland
| |
Collapse
|
232
|
Hengchang M, Zhongwei Z, Yuanyuan J, Lajia Z, Chunxuan Q, Haiying C, Zengming Y, Zhiwang Y, Ziqiang L. Triphenylamine-decorated BODIPY fluorescent probe for trace detection of picric acid. RSC Adv 2015. [DOI: 10.1039/c5ra12154j] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The near-IR photoactive material TBMA demonstrated high selectivity and sensitivity for picric acid detection with low detection limit and high quenching constant.
Collapse
Affiliation(s)
- Ma Hengchang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Zhang Zhongwei
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Jin Yuanyuan
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Zha Lajia
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Qi Chunxuan
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Cao Haiying
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Yang Zengming
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Yang Zhiwang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Lei Ziqiang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| |
Collapse
|
233
|
Senthamizhan A, Celebioglu A, Uyar T. Ultrafast on-site selective visual detection of TNT at sub-ppt level using fluorescent gold cluster incorporated single nanofiber. Chem Commun (Camb) 2015; 51:5590-3. [DOI: 10.1039/c4cc01190b] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Single nanofiber embedded fluorescent gold cluster based sensor for selective detection of TNT at sub-ppt level.
Collapse
Affiliation(s)
| | - Asli Celebioglu
- UNAM-National Nanotechnology Research Center
- Bilkent University
- Ankara
- Turkey
- Institute of Materials Science & Nanotechnology
| | - Tamer Uyar
- UNAM-National Nanotechnology Research Center
- Bilkent University
- Ankara
- Turkey
- Institute of Materials Science & Nanotechnology
| |
Collapse
|
234
|
Gonzalez-Carrero S, Agudelo-Morales C, Guardia MDL, Galian RE, Pérez-Prieto J. Three independent channel nanohybrids as fluorescent probes. RSC Adv 2015. [DOI: 10.1039/c5ra18028g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Pyrene-capped CdSe/ZnS nanohybrids permit a simple and rapid quantification of trinitrotoluene in the presence of interferents of the same chemical family.
Collapse
Affiliation(s)
| | - Carlos Agudelo-Morales
- Instituto de Ciencia Molecular (ICmol)
- Universidad de Valencia
- Catedrático José Beltrán 2
- Paterna
- Spain
| | | | - Raquel E. Galian
- Instituto de Ciencia Molecular (ICmol)
- Universidad de Valencia
- Catedrático José Beltrán 2
- Paterna
- Spain
| | - Julia Pérez-Prieto
- Instituto de Ciencia Molecular (ICmol)
- Universidad de Valencia
- Catedrático José Beltrán 2
- Paterna
- Spain
| |
Collapse
|
235
|
Wang S, Xue P, Wang P, Yao B. Emission enhanced two-component gels for the detection of organic amine vapors. NEW J CHEM 2015. [DOI: 10.1039/c5nj01168j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A two-component gelator with enhanced emission could be used to quantitatively detect and discriminate between aliphatic and aromatic organic amine vapors.
Collapse
Affiliation(s)
- Sisi Wang
- College of Chemistry
- Jilin University
- Changchun
- China
- Institute of Translational Medicine
| | | | - Panpan Wang
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Boqi Yao
- College of Chemistry
- Jilin University
- Changchun
- China
| |
Collapse
|
236
|
Soman R, Sujatha S, Arunkumar C. Protonation and axial ligation intervened fluorescence turn-off sensing of picric acid in freebase and tin(iv) porphyrins. RSC Adv 2015. [DOI: 10.1039/c5ra18310c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Protonation and axial ligation: selective sensing of picric acid using freebase and tin(iv) meso-tetraarylporphyrins occurs through protonation and axial ligation which is evident from UV-visible, fluorescence, 1H NMR titrations and X-ray crystallography.
Collapse
Affiliation(s)
- Rahul Soman
- Bioinorganic Materials Chemistry Laboratory
- Department of Chemistry
- National Institute of Technology Calicut
- Kozhikode
- India
| | - Subramaniam Sujatha
- Bioinorganic Materials Chemistry Laboratory
- Department of Chemistry
- National Institute of Technology Calicut
- Kozhikode
- India
| | - Chellaiah Arunkumar
- Bioinorganic Materials Chemistry Laboratory
- Department of Chemistry
- National Institute of Technology Calicut
- Kozhikode
- India
| |
Collapse
|
237
|
Vitale P, D'Anna F, Ferrante F, Rizzo C, Noto R. π-Conjugated diimidazolium salts: rigid structure to obtain organized materials. Phys Chem Chem Phys 2015; 17:26903-17. [DOI: 10.1039/c5cp03808a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photophysical properties and aggregation ability of π-conjugated diimidazolium salts were studied in solution and in the solid state. Experimental investigations were supported by DFT calculations.
Collapse
Affiliation(s)
- Paola Vitale
- Università degli Studi di Palermo
- Dipartimento STEBICEF
- Sezione di Chimica
- 90128 Palermo
- Italy
| | - Francesca D'Anna
- Università degli Studi di Palermo
- Dipartimento STEBICEF
- Sezione di Chimica
- 90128 Palermo
- Italy
| | - Francesco Ferrante
- Università degli Studi di Palermo
- Dipartimento di Fisica e Chimica
- 90128 Palermo
- Italy
| | - Carla Rizzo
- Università degli Studi di Palermo
- Dipartimento STEBICEF
- Sezione di Chimica
- 90128 Palermo
- Italy
| | - Renato Noto
- Università degli Studi di Palermo
- Dipartimento STEBICEF
- Sezione di Chimica
- 90128 Palermo
- Italy
| |
Collapse
|
238
|
Ren YY, Wu NW, Huang J, Xu Z, Sun DD, Wang CH, Xu L. A neutral branched platinum–acetylide complex possessing a tetraphenylethylene core: preparation of a luminescent organometallic gelator and its unexpected spectroscopic behaviour during sol-to-gel transition. Chem Commun (Camb) 2015; 51:15153-6. [DOI: 10.1039/c5cc04789g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A neutral branched platinum–acetylide complex TPA possessing a tetraphenylethylene core was successfully prepared, which was found to form luminescent organometallic gels in ethyl acetate.
Collapse
Affiliation(s)
- Yuan-Yuan Ren
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Nai-Wei Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Junhai Huang
- Zhangjiang Institute
- China State Institute of Pharmaceutical Industry
- Shanghai
- China
| | - Zheng Xu
- Chongqing Key Laboratory of Environmental Materials and Remediation Technology
- College of Materials and Chemical Engineering
- Chongqing University of Arts and Sciences
- Chongqing
- China
| | - Dan-Dan Sun
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Cui-Hong Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Lin Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
| |
Collapse
|
239
|
Xue P, Wang P, Yao B, Sun J, Gong P, Zhang Z, Qian C, Lu R. Nanofibers of hydrogen-bonded two-component gel with closely connected p- and n-channels and photoinduced electron transfer. ACS APPLIED MATERIALS & INTERFACES 2014; 6:21426-21434. [PMID: 25347786 DOI: 10.1021/am506422m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An D-A-D gelator (DTCQ) was designed and synthesized using 2,3-dimethyl-5,8-di(thiophen-2-yl)quinoxaline and N-alkyl 3-aminocarbazole units as acceptor and donor, respectively, which were linked by a single bond. The compound could gelate several solvents, such as benzyl alcohol, aniline, acetophenone, and o-dichlorobenzene, as well as self-assemble into one-dimensional (1D) nanofibers in gel phase. The absorption and infrared spectra of the gels indicated that π-π interactions between aromatic moieties, intermolecular hydrogen bonds between amide units, and van der Waals forces were the driving forces for the formation of 1D self-assemblies and gel. DTCQ gel was red and emits red fluorescence because it has a strong absorption band at 487 nm and an emissive band at 620 nm. Moreover, DTCQ and a fullerene carboxylic acid formed two-component gel, in which the two compounds developed a hydrogen bond complex and self-assembled into 1D nanofibers with closely connected p- and n-channels. The nanofibrous xerogel film can rapidly generate a photocurrent under visible-light radiation through electron transfer from the gelator to fullerene, and then, the excellent exciton separation and charge transfer to two electrodes.
Collapse
Affiliation(s)
- Pengchong Xue
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , 2699# Qianjin Street, Changchun 130012, P. R. China
| | | | | | | | | | | | | | | |
Collapse
|
240
|
Yu H, Lü Y, Chen X, Liu K, Fang Y. Functionality-oriented molecular gels: synthesis and properties of nitrobenzoxadiazole (NBD)-containing low-molecular mass gelators. SOFT MATTER 2014; 10:9159-9166. [PMID: 25318390 DOI: 10.1039/c4sm01869a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Two nitrobenzoxadiazole (NBD)-containing cholesteryl (Chol) derivatives were prepared by introducing d/l-phenylalanine into the linkers between the NBD and Chol units. The compounds were denoted as and , respectively. The gelation behaviors of them were tested in 34 liquids. It was found that the chirality of the linkers shows a great effect on the gelation ability and the gel properties of the two compounds. SEM studies demonstrated that the gelator in the gel of /DMSO aggregated into uniform fibrous structures. FTIR, (1)H NMR and UV-Vis spectroscopy measurements revealed that intermolecular hydrogen bonding and π-π stacking are two main driving forces to promote the gel formation. Interestingly, the /DMSO gel exhibits rapid and reproducible gel-sol phase transition and fluorescence quenching upon introduction of ammonia. Furthermore, both the gel and the fluorescence emission could be fully recovered upon evaporation of the ammonia gas introduced. Spectroscopy and model system studies revealed the association of ammonia with the nitro group of the NBD unit of the compound, which is recognized as the main reason for the chemical responses of the gel system. On the basis of the discovery, an ammonia sensing film had been fabricated and made into a device. Furthermore, a device-based and conceptual "ammonia leaking" monitoring instrument was developed. A preliminary test demonstrated that the performance of the system is exceptionally good, a typical and persuasive example to show the important real-life applications of molecular gels.
Collapse
Affiliation(s)
- Hang Yu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
| | | | | | | | | |
Collapse
|
241
|
Alfonso M, Espinosa A, Tárraga A, Molina P. Multifunctional Benzothiadiazole-Based Small Molecules Displaying Solvatochromism and Sensing Properties toward Nitroarenes, Anions, and Cations. ChemistryOpen 2014; 3:242-9. [PMID: 25558442 PMCID: PMC4280823 DOI: 10.1002/open.201402022] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Indexed: 11/10/2022] Open
Abstract
Aryl or heteroaryl 5-substituted imidazo-benzothiadiazole derivatives were synthesized and shown to display remarkable solvatofluorochromism and selectively sense mercury(II) cations, acetate anions, and nitroaromatic derivatives, with discrimination between p-nitrophenol and picric acid. These novel sensors are of importance these days, as the detection of explosives is a high priority in issues of national security and environmental protection. To determine the ion binding properties of the sensors, their absorption and fluorescence emission spectra upon binding different cations and anions were compared. Significant shifts in the spectra were only observed for mercury(II) and acetate. The binding of these two ions was further studied using (1)H NMR. The binding properties of different nitroaromatic compounds were also determined, and the results showed the importance of the presence of a phenol group in the guest molecule. Specifically, the two sensors were shown to discriminate between p-nitrophenol and picric acid. Finally, the mechanism of fluorescence quenching upon addition of nitrophenols was determined by computational methods.
Collapse
Affiliation(s)
- María Alfonso
- Departamento de Química Orgánica, Universidad de Murcia Campus de Espinardo, 30100 Murcia (Spain) E-mail:
| | - Arturo Espinosa
- Departamento de Química Orgánica, Universidad de Murcia Campus de Espinardo, 30100 Murcia (Spain) E-mail:
| | - Alberto Tárraga
- Departamento de Química Orgánica, Universidad de Murcia Campus de Espinardo, 30100 Murcia (Spain) E-mail:
| | - Pedro Molina
- Departamento de Química Orgánica, Universidad de Murcia Campus de Espinardo, 30100 Murcia (Spain) E-mail:
| |
Collapse
|
242
|
Feng HT, Wang JH, Zheng YS. CH3-π interaction of explosives with cavity of a TPE macrocycle: the key cause for highly selective detection of TNT. ACS APPLIED MATERIALS & INTERFACES 2014; 6:20067-20074. [PMID: 25319016 DOI: 10.1021/am505636f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The identification of explosives is critical for analyzing the background of terrorism activities and the origin of pollution aroused by the explosives, but it is a challenge to discriminate the explosives with a very similar structure. Herein we report a series of TPE-based macrocycles with an AIE effect for the 0.2-4 ppb level detection of TNT among a number of nitro-aromatic compounds through fluorescence quenching in natural water sources, whereas the contact mode approach using portable paper sensors exhibited a high sensitivity for the detection of TNT at 1.0 × 10(-13) M level. The reliability of the quantitative analysis has been confirmed by HPLC. Our findings demonstrate that the TPE-based macrocycles have great potential as excellent sensors for TNT. Moreover, it was found for the first time that the macrocycles could selectively recognize nitroaromatics explosives bearing methyl group through a CH3-π interactions, and even exhibit a sole selectivity for TNT among the very difficultly differentiating nitroaromatics including trinitrophenol and trinitrobenzene.
Collapse
Affiliation(s)
- Hai-Tao Feng
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan 430074, China
| | | | | |
Collapse
|
243
|
Joarder B, Desai AV, Samanta P, Mukherjee S, Ghosh SK. Selective and Sensitive Aqueous-Phase Detection of 2,4,6-Trinitrophenol (TNP) by an Amine-Functionalized Metal-Organic Framework. Chemistry 2014; 21:965-9. [DOI: 10.1002/chem.201405167] [Citation(s) in RCA: 275] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Indexed: 11/09/2022]
|
244
|
Xiong JF, Li JX, Mo GZ, Huo JP, Liu JY, Chen XY, Wang ZY. Benzimidazole Derivatives: Selective Fluorescent Chemosensors for the Picogram Detection of Picric Acid. J Org Chem 2014; 79:11619-30. [DOI: 10.1021/jo502281b] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jin-Feng Xiong
- School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, P. R. China
| | - Jian-Xiao Li
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Guang-Zhen Mo
- School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, P. R. China
| | - Jing-Pei Huo
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Jin-Yan Liu
- School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, P. R. China
| | - Xiao-Yun Chen
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Zhao-Yang Wang
- School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, P. R. China
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou, 510006, P. R. China
| |
Collapse
|
245
|
Xue P, Sun J, Yao B, Gong P, Zhang Z, Qian C, Zhang Y, Lu R. Strong Emissive Nanofibers of Organogels for the Detection of Volatile Acid Vapors. Chemistry 2014; 21:4712-20. [DOI: 10.1002/chem.201405074] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Indexed: 12/22/2022]
|
246
|
Zhu PC, Luo LN, Cen PQ, Li JT, Zhang C. Three-dimensional nanographene based on triptycene for detection of nitroaromatic explosives. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.09.091] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
247
|
Kartha KK, Sandeep A, Praveen VK, Ajayaghosh A. Detection of Nitroaromatic Explosives with Fluorescent Molecular Assemblies and π-Gels. CHEM REC 2014; 15:252-65. [DOI: 10.1002/tcr.201402063] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Kalathil K. Kartha
- Photosciences and Photonics Group, Chemical Sciences and Technology Division; CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695 019 Kerala India
| | - Anjamkudy Sandeep
- Photosciences and Photonics Group, Chemical Sciences and Technology Division; CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695 019 Kerala India
| | - Vakayil K. Praveen
- Photosciences and Photonics Group, Chemical Sciences and Technology Division; CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695 019 Kerala India
| | - Ayyappanpillai Ajayaghosh
- Photosciences and Photonics Group, Chemical Sciences and Technology Division; CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695 019 Kerala India
| |
Collapse
|
248
|
Acharyya K, Mukherjee PS. A fluorescent organic cage for picric acid detection. Chem Commun (Camb) 2014; 50:15788-91. [DOI: 10.1039/c4cc06225f] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
249
|
Cao X, Meng L, Li Z, Mao Y, Lan H, Chen L, Fan Y, Yi T. Large red-shifted fluorescent emission via intermolecular π-π stacking in 4-ethynyl-1,8-naphthalimide-based supramolecular assemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:11753-11760. [PMID: 25211150 DOI: 10.1021/la503299j] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Two low molecular weight gelators containing 4-ethynyl-1,8-naphthalimide groups with large conjugated structure via different length of alkyl chains were synthesized and fully characterized. The gelation properties, structural character, and fluorescence of the gels were investigated via methods of scanning electron microscopy, X-ray diffraction, and spectral studies. The gelators have high fluorescence quantum yields in both solution and solid state. Interestingly, the wavelength of the fluorescent emission in the reversible sol-gel transition process of the gels has a large red-shift of 80 nm in DMF, which is extremely sparse for 1,8-naphthalimide derivatives in the literature. The intermolecular π-π stacking between naphthalimide is suggested to be the main driving force for the gel formation and fluorescent variation by means of temperature-dependent (1)H NMR study and theoretical calculation.
Collapse
Affiliation(s)
- Xinhua Cao
- Department of Chemistry, Fudan University , Shanghai 200433, China
| | | | | | | | | | | | | | | |
Collapse
|
250
|
Zyryanov GV, Kopchuk DS, Kovalev IS, Nosova EV, Rusinov VL, Chupakhin ON. Chemosensors for detection of nitroaromatic compounds (explosives). RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n09abeh004467] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|