1
|
Alpugan S, Topkaya D, Atilla D, Ahsen V, Niazi J, Dumoulin F. Using aptamers as targeting moieties conjugated to photosensitising phthalocyanines. Photodiagnosis Photodyn Ther 2017. [DOI: 10.1016/j.pdpdt.2017.01.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
2
|
Batat P, Bayar M, Pur B, Çoker E, Ahsen V, Yuksel F, Demirel AL. The optical characterization of metal-mediated aggregation behaviour of amphiphilic Zn(ii) phthalocyanines. Phys Chem Chem Phys 2016; 18:15574-83. [DOI: 10.1039/c6cp01093h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Addition of Ag+ cations induces J-aggregation in ultrathin films of both symmetrically and asymmetrically substituted Zn(ii) phthalocyanines.
Collapse
Affiliation(s)
- P. Batat
- Chemistry Department
- Koç University
- İstanbul
- Turkey
| | - M. Bayar
- Chemistry Department
- Gebze Technical University
- Kocaeli
- Turkey
| | - B. Pur
- Chemistry Department
- Gebze Technical University
- Kocaeli
- Turkey
| | - E. Çoker
- Chemistry Department
- Koç University
- İstanbul
- Turkey
| | - V. Ahsen
- Chemistry Department
- Gebze Technical University
- Kocaeli
- Turkey
| | - F. Yuksel
- Chemistry Department
- Gebze Technical University
- Kocaeli
- Turkey
| | | |
Collapse
|
3
|
Giuntini F, Dumoulin F, Daly R, Ahsen V, Scanlan EM, Lavado ASP, Aylott JW, Rosser GA, Beeby A, Boyle RW. Orthogonally bifunctionalised polyacrylamide nanoparticles: a support for the assembly of multifunctional nanodevices. Nanoscale 2012; 4:2034-2045. [PMID: 22354385 DOI: 10.1039/c2nr11947a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Polyacrylamide nanoparticles bearing two orthogonal reactive functionalities were prepared by reverse microemulsion polymerisation. Water-soluble photosensitisers and peptide or carbohydrate moieties were sequentially attached to the new nanospecies by orthogonal conjugations based on copper-catalysed azide-alkyne cycloaddition and isothiocyanate chemistry.
Collapse
Affiliation(s)
- F Giuntini
- Department of Chemistry, University of Hull, Kingston-upon-Hull, East Yorkshire, HU6 7RX, UK
| | | | | | | | | | | | | | | | | | | |
Collapse
|
4
|
Dumoulin F, Ahsen V. Designing non-ionic phthalocyanines for PDT: Strategies, synthesis and SAR. Photodiagnosis Photodyn Ther 2011. [DOI: 10.1016/j.pdpdt.2011.03.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
5
|
Basova T, Tsargorodskaya A, Nabok A, Hassan A, Gürek A, Gümüş G, Ahsen V. Investigation of gas-sensing properties of copper phthalocyanine films. Materials Science and Engineering: C 2009. [DOI: 10.1016/j.msec.2008.07.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
6
|
Basova T, Jushina I, Gürek AG, Ahsen V, Ray AK. Use of the electrochromic behaviour of lanthanide phthalocyanine films for nicotinamide adenine dinucleotide detection. J R Soc Interface 2008; 5:801-6. [PMID: 17971319 DOI: 10.1098/rsif.2007.1241] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Electrochromic properties of spun films of bis[octakis(hexylthio)phthalocyaninato] dysprosium(III) were investigated for determining nicotinamide adenine dinucleotide hydride (NADH) in water solutions. A spin-coated film deposited on indium tin oxide electrode displays only one redox couple (at E1/2=0.78V). The films of [(C6H13S)8Pc]2Dy were modified chemically or electrochemically for the detection of reduced NADH in water solution. The modified film in the oxidized ([(C6H13S)8Pc]2Dy)+ form is believed to be reduced to its neutral form on interaction with NADH.
Collapse
Affiliation(s)
- T Basova
- Institute of Inorganic Chemistry, Lavrentiev Prospect 3, Novosibirsk 630090, Russia.
| | | | | | | | | |
Collapse
|
7
|
Basova T, Kol'tsov E, Gürek A, Atilla D, Ahsen V, Hassan A. Investigation of liquid-crystalline behaviour of copper octakisalkylthiophthalocyanine and its film properties. Materials Science and Engineering: C 2008. [DOI: 10.1016/j.msec.2007.02.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
8
|
Yuksel F, Gurek AG, Jeanneau E, Gurol I, Durmus M, Luneau D, Ahsen V. Benefits of X-ray on characterization of vic-dioxime nickel(II) complexes. Acta Crystallogr A 2007. [DOI: 10.1107/s0108767307096407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
9
|
Chumakov Y, Luneau D, Yuksel F, Ahsen V, Gumus G, Gurol I. The study of unprecedented tubular channels formation in alkyl-substituted oxamide oxime metal complexes. Acta Crystallogr A 2007. [DOI: 10.1107/s0108767307096432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
10
|
Okutan M, Yakuphanoglu F, Köysal O, Durmuş M, Ahsen V. Dielectric spectroscopy analysis in employing liquid crystal phthalonitrile derivative in nematic liquid crystals. Spectrochim Acta A Mol Biomol Spectrosc 2007; 67:531-5. [PMID: 16971169 DOI: 10.1016/j.saa.2006.08.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2006] [Revised: 08/04/2006] [Accepted: 08/07/2006] [Indexed: 05/11/2023]
Abstract
Dielectric anizotropy and relaxation properties of 2,3-dicyano-1,4-di[3,4,5-tri(dodecyloxy)phenylcarbonyloxy] benzene (DCDPB)-doped E7 and E7 liquid crystal have been investigated by the dielectric spectroscopy method. Dielectric anisotropy property of the LCs changes from the positive type to negative type. Dielectric relaxation properties suggest that LCs exhibit a monodispersive dielectric property. The relaxation frequency of E7 and E7/DCDPB liquid crystals was calculated by means of Cole-Cole plots. Consequently, DCDPB dopant changes the dielectric anizotropy and relaxation parameters of E7 LC.
Collapse
Affiliation(s)
- M Okutan
- Department of Physics, Gebze Institute of Technology, Gebze 41400, Kocaeli, Turkey.
| | | | | | | | | |
Collapse
|
11
|
Tesneli B, Topacli A, Topacli C, Durmuş M, Ahsen V. Characterization of Langmuir–Blodgett films of arachidic acid and 1,2-bis(dodecyloxy)-4,5-diaminobenzene in pyroelectric devices. Colloids Surf A Physicochem Eng Asp 2007. [DOI: 10.1016/j.colsurfa.2006.11.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
12
|
Civan M, Topacli C, Topacli A, Gürol İ, Ahsen V. An infrared study on Langmuir–Blodgett films of 12,13-bis(hydroxyimino)-11,14-diazatetracosane. J Mol Struct 2007. [DOI: 10.1016/j.molstruc.2006.10.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
13
|
Topacli A, Topacli C, Teşneli B, Durmuş M, Ahsen V. Infrared studies of pyroelectric Langmuir–Blodgett films of arachidic acid and 1,2-bis(dodecyloxy)-4,5-diaminobenzene. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2006.03.083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
14
|
Gürek AG, Ahsen V, Heinemann F, Zugenmaier P. Synthesis and Liquid-crystalline Behaviour of Tetrakis- and Octakis(13, 17-dioxa nonacosane-15-sulfanyl)Phthalocyanines. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587250008024421] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A. G. Gürek
- a TÜBITAK- Marmara Research Center, Department of Chemistry , P.O. Box 21, 41470 , Gebze-Kocaeli , TURKEY
| | - V. Ahsen
- a TÜBITAK- Marmara Research Center, Department of Chemistry , P.O. Box 21, 41470 , Gebze-Kocaeli , TURKEY
- b Gebze Institute for Technology, Department of Chemistry , P.O. Box 141 , 41400 , Gebze/Kocaeli , TURKEY
| | - F. Heinemann
- c Institut für Physikalische Chemie, der Technischen Universitat Clausthal , Arnold-Sommerfeld Strasse 4, D-38678 , Clausthal-Zellerfeld , GERMANY
| | - P. Zugenmaier
- c Institut für Physikalische Chemie, der Technischen Universitat Clausthal , Arnold-Sommerfeld Strasse 4, D-38678 , Clausthal-Zellerfeld , GERMANY
| |
Collapse
|
15
|
Gümüş G, Ahsen V. Synthesis and Mesomorphism of [N,N′-Bis(3′,4′-didodecyloxyphenyl) diaminoglyoxime] Complexes with Nickel and Palladium. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587250008024804] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- G. Gümüş
- Department of Chemistry, TÜBITAK Marmara Research Center, P.O. Box 21, 41470, Gebze, Kocaeli, Turkey
| | - V. Ahsen
- Department of Chemistry, TÜBITAK Marmara Research Center, P.O. Box 21, 41470, Gebze, Kocaeli, Turkey
- Department of Chemistry, Gebze Institute of Technology, P.O. Box 141, 41400, Gebze, Kocaeli, Turkey
| |
Collapse
|
16
|
Topacli C, Topacli A, Teşneli B, Richardson T, Gürol İ, Ahsen V. The molecular structure of Langmuir–Blodgett films of 14,15-bis(hydroxyimino)-13,16-dithiaoctacosane using Fourier Transform Infrared spectroscopy. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2005.06.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
17
|
Dimoglo A, Kovalishyn V, Shvets N, Ahsen V. The Structure - Inhibitory Activity Relationships Study in a Series of Cyclooxygenase-2 Inhibitors: A Combined Electronic-Topological and Neural Networks Approach. Mini Rev Med Chem 2005; 5:879-92. [PMID: 16250832 DOI: 10.2174/138955705774329537] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Structure-activity relationships study was performed for a few series of cyclooxygenase-2 (COX-2) inhibitors by using the Electronic-Topological Method combined with Neural Networks (ETM-NN). Specific molecular fragments were found for active compounds ('activity features') from both series by the ETM application. After this, a system of prognosis was developed as the result of training Kohonen's self-organizing maps (SOM) by the fragments. From the detailed analysis of all compounds under study, requirements necessary for a compound to be COX-2 inhibitor were formulated. The analysis showed that any requirements violation for a molecule resulted in a considerable decrease or even complete loss of its activity. The found activity features identified correctly different marketed drugs and new compounds that had passed pre-clinical and clinical trials; this fact confirms the workability of the system developed for the COX-2 inhibitory activity prediction.
Collapse
Affiliation(s)
- A Dimoglo
- Gebze Institute of Technology, PK-141, Gebze/Kocaeli, 41400, Turkey.
| | | | | | | |
Collapse
|
18
|
Kesimli B, Topacli A, Topacli C, Gümüs G, Gürol İ, Ahsen V. Langmuir monolayers with some vic-dioxime ligands and their complexation behaviour. Colloids Surf A Physicochem Eng Asp 2005. [DOI: 10.1016/j.colsurfa.2005.01.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
19
|
Abstract
A large series of cyclooxygenase-2 (COX-2) inhibitors with diverse skeletons were investigated by means of the Electronic-Topological Method. A system for the COX-2 inhibitor activity prognostication was built with 6 pharmacophores and 6 anti-pharmacophores. The forecasting ability of the system was also tested on different structures, which differ from those that characterize the series studied.
Collapse
Affiliation(s)
- A Dimoglo
- Gebze Institute of Technology, POB 141, Gebze/Kocaeli, 41400, Turkey.
| | | | | | | |
Collapse
|
20
|
Basova T, Gürek A, Ahsen V. Investigation of liquid-crystalline behavior of nickel octakisalkylthiophthalocyanines and orientation of their films. Materials Science and Engineering: C 2002. [DOI: 10.1016/s0928-4931(02)00051-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
21
|
Sim E, Dimoglo A, Shvets N, Ahsen V. Electronic-topological study of the structure-activity relationships in a series of piperidine morphinomimetics. Curr Med Chem 2002; 9:1537-45. [PMID: 12171562 DOI: 10.2174/0929867023369510] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Structure-activity relationships (SAR) are studied in the series of 4,4-disubstituted piperidine morphinomimetics (42 compounds) by means of the Electronic-Topological Method (ETM). In the frameworks of this approach, its input data were taken as the results of conformational and quantum-mechanical calculations. These calculations had been carried out for all compounds from the series under study, taking into account their neutral and protonated by the nitrogen of piperidine cycle forms. The ETM application resulted in a set of pharmacophores and anti-pharmacophores, which formed a basis of a system used to predict analgesic activity. First of all, the system was tested on known analgesics. Testing has shown a good agreement with the experimental data. Then, the system was applied to a few compounds with similar structures but unknown activity. The results of the study could be used for computer screening and design of novel compounds with analgesics properties as new potential drugs.
Collapse
Affiliation(s)
- E Sim
- Gebze Institute of Technology, POB 141, Gebze, 41400, Turkey
| | | | | | | |
Collapse
|
22
|
Gürek AG, Ahsen V, Luneau D, Pécaut J. Synthesis, structure, spectroscopic properties, and magnetic properties of an octakis(alkylthio)-substituted lutetium(III) bisphthalocyanine. Inorg Chem 2001; 40:4793-7. [PMID: 11511231 DOI: 10.1021/ic010240v] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of a new sandwich lutetium(III) bisphthalocyanine substituted with hexylthio groups (1), [(C6H1)S)8-Pc]2Lu, is described. The compound is very soluble in most common organic solvents and has been fully characterized (elemental analysis, IR, 1H and 13C NMR, UV-vis spectroscopy, mass spectrometry). The chemically oxidized and reduced forms have been formed and characterized. The crystal structure of the compound (1) has been determined by X-ray diffraction on a single crystal. It crystallizes in the monoclinic space group C2/c with a = 31.558(2) A, b = 32.755(2) A, c = 20.489(1) A, beta = 127.119(1) degrees, and Z = 4. The temperature dependence of the magnetic susceptibility, measured on polycrystalline samples and in the range 6-300 K, is in agreement with one unpaired electron per molecular unit as found for the unsubstituted derivative. The magnetic results can be modeled assuming one-dimensional chain of spin S = 1/2 with g = 2.04 and an antiferromagnetic coupling (J = -11.83 cm(-1), H = -2JSigmaSiSj).
Collapse
Affiliation(s)
- A G Gürek
- TUBITAK, Marmara Research Center, Department of Chemistry, P.O. Box 21, 41470 Gebze, Kocaeli, Turkey.
| | | | | | | |
Collapse
|
23
|
|
24
|
Gürol I, Ahsen V. Synthesis and aggregation behaviour of phthalocyanines substituted with flexible crown ether. J PORPHYR PHTHALOCYA 2000. [DOI: 10.1002/1099-1409(200009/10)4:6<621::aid-jpp231>3.3.co;2-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
25
|
Bardin M, Bertounesque E, Plichon V, Simon J, Ahsen V, Bekaroglu O. Electrochemistry of lutetium crowned ether diphthalocyanine films. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0022-0728(89)80073-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
26
|
|