Sİ

Sıddık İçli

Ege University

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Ceylan Zafer

Ege University

ŞD

Şerafettin Demiç

Izmir Kâtip Çelebi University

Haluk Dinçalp

Manisa Celal Bayar University

Mahmut Kuş

Konya Technical University

Canan Karapire

Ege University

Mustafa Can

Izmir Kâtip Çelebi University

Kasım Ocakoğlu

Tarsus University

Huriye Icil

Eastern Mediterranean University

Canan Varlıklı

Izmir Institute of Technology

Serap Alp

Dokuz Eylül University

Cooperative Institutions

Ege University

Çanakkale Onsekiz Mart Üniversitesi

Energy Institute

Manisa Celal Bayar University

Middle East Technical University

Izmir Kâtip Çelebi University

Hacettepe University

Istanbul Technical University

Pamukkale University

Johannes Kepler University of Linz

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Soluble derivatives of perylene and naphthalene diimide for n-channel organic field-effect transistors

Organic Electronics (2006)

Th.B. Singh S. Erten S. Günes Ceylan Zafer Gülşah Türkmen

Diimide

Ambipolar diffusion

Organic field-effect transistor

Organic semiconductor

Electron Mobility

10.1016/j.orgel.2006.06.010

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Citations (118)

A new donor–acceptor double‐cable carbazole polymer with perylene bisimide pendant group: Synthesis, electrochemical, and photovoltaic properties

Journal of Polymer Science Part A Polymer Chemistry (2009)

Sermet Koyuncu Ceylan Zafer Fatma Baycan Koyuncu Banu Aydın Mustafa Can

Abstract We report here electrochemical synthesis of novel soluble donor–acceptor (D–A) polymer with suitably functionalized perylenetetracarboxylic diimide dye derivative covalently linked to carbazole moiety (Cbz‐PDI). The band gap, E g was measured using UV–Vis spectroscopy and compared with that obtained by cyclic voltammetry (CV). Efficient intramolecular electron transfer from carbazole‐donor to perynediimide‐acceptor leads to remarkable fluorescence quenching of the perylene core. Furthermore, spectroelectrochemical property and surface morphology of the polymer film were investigated. Characteristic monoanion and dianion radical bands on the UV–Vis absorption spectra attributed to the electrochemical reduction of the neutral polymer were observed. During the reduction process, red color of the film turned into blue and violet, respectively. Finally, the photovoltaic performance of the D–A double‐cable polymer was checked and nearly 0.1% electrical conversion efficiency is obtained under simulated AM 1.5 solar light with 100 mW/cm 2 radiation power. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 6280–6291, 2009

Carbazole

Diimide

Acceptor

Moiety

Electron acceptor

10.1002/pola.23671

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Citations (40)

The effect of temperature on the charge transport and transient absorption properties of K27 sensitized DSSC

Solar Energy Materials and Solar Cells (2008)

Kasım Ocakoğlu F. Yakuphanoğlu James R. Durrant Sıddık İçli

Thermionic emission

Photocurrent

Open-circuit voltage

Equivalent series resistance

Transient (computer programming)

10.1016/j.solmat.2008.03.006

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Citations (31)

Photooxidation studies with perylenediimides in solution, PVC and sol–gel thin films under concentrated sun light

Solar Energy (2004)

Canan Karapire Mahmut Kuş Gülşah Türkmen Colleen C. Trevithick‐Sutton Christopher S. Foote

10.1016/j.solener.2004.07.003

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Citations (13)

Construction of a fuel cell system with DC power distribution for residential applications

International Journal of Hydrogen Energy (2010)

Engin Cetin Ahmet Yılancı Harun Kemal Öztürk Ismail Kasikci Metin Çolak

10.1016/j.ijhydene.2010.11.072

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Citations (5)

Esr Studies of Some Crowded Free Radicals Derived from Oxalate Esters

Spectroscopy Letters (1984)

Sıddık İçli Faruk Güler

Abstract The temperature independent esr spectrum of di-i-Propyl-t-butylmethyl radical, derived from photolysis of oxalate ester, indicates a frozen “cogwhell” conformation for this specie. The neo-pentyl substituted oxalate esters are suggested to qive β-hydrogen abstraction on presence of di-t-butylperoxide on photolysis.

Hydrogen atom abstraction

10.1080/00387018408075705

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Citations (3)

Hybrid solar cells using nanorod zinc oxide electrodes and perylene monoimide–monoanhydride dyes

Current Applied Physics (2009)

Sule Erten‐Ela Sadık Çoğal Gülşah Türkmen Sıddık İçli

Nanorod

10.1016/j.cap.2009.05.018

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Citations (17)

An X-Ray Analysis on Restricted Rotational Isomers of 2-Thioxo-4-oxazolidinone

Spectroscopy Letters (1983)

Z. Aksaç Sıddık İçli Carl Krüger Charlene Tsay

Abstract The thermodynamically more stable diastereomeric rotational isomer I, of 3-(o-tolyl)-5-methyl-2-thioxo-4-oxazolidinone, which is first crystallized out in solution, shows that the ortho methyl substituent is cisoid to the methyl group of the hetero ring, and the thermodynamically less stable isomer II, crystallized later, has both methyl groups in transoid conformation, as is found in X-ray studies. The carbonyl and thiocarbonyl bonds are found to be longer in isomer II than in isomer I, which is attributed to the favored conjugation interaction of carbonyl, thiocarbonyl groups with the lone pair electrons of nitrogen, that may cause the lessened stability of isomer II.

Lone pair

Diastereomer

Carbonyl group

Methyl group

10.1080/00387018308062380

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Citations (1)

Spectrophotochemical and electrochemical characterization of perylene derivatives adsorbed on nanoporous metaloxide films

The European Physical Journal Applied Physics (2007)

Mahmut Kuş Şerafettin Demiç Ceylan Zafer Gamze Saygili Hakan Bilgili

Electrochemistry of perylene imide and anhydride derivatives adsorbed on semiconductor TiO2 (NT) and insulator Al2O3 (NA) metal oxide films were presented. Adsorption rates on metal oxide surface are observed to be strongly depending on molecular structure. Monoanhydride-monoimide derivatives show two reversible reductions in solution and one reversible reduction in films. Color change from red to blue and violet is observed indicating the formation of monoanion and dianion radicals. Spectroelectrochemical measurements support this interpretation. The color reversal is quite stable in NA films in comparison with NT films.

Imide

Nanoporous

10.1051/epjap:2007011

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Citations (11)

Photooxidation of a Conjugated Diene by an Exciplex Mechanism: Amplification via Radical Chain Reactions in the Perylene Diimide-Photosensitized Oxidation of α-Terpinene

The Journal of Physical Chemistry A (1998)

Liaohai Chen Lucian A. Lucia Elizabeth R. Gaillard David G. Whitten Huriye Icil

Irradiation of the perylene diimide (1) or 9,10-dicyanoanthracene (DCA) in the presence of α-terpinene (2-HH) in the presence of molecular oxygen leads to moderately efficient oxidation of 2-HH to p-cymene (2). Although 1 might be expected to photosensitize oxidations by the conventional "singlet oxygen" pathways, spectroscopic studies indicate that while oxygen can quench the fluorescent singlet of 1, no singlet oxygen is produced. 2-HH is also an efficient quencher of the fluorescent singlets of 1 and DCA and, for nonpolar solvents such as methylene chloride, in each case the quenching results in formation of an exciplex or contact radical ion pair. Under conditions where quenching by 2-HH to form the exciplex is complete, maximum quantum yields of 2 are obtained, thus indicating that the exciplex is the precursor to its formation. Nonproductive decay of the exciplex to starting materials is its major fate, thus the moderately high quantum efficiencies for formation of 2 require a mechanism involving amplification. Spin-trapping experiments suggest the role of hydroperoxy radicals and amplification by a radical chain mechanism involving these radicals and the intermediate 2-H• is proposed. Possible paths for reaching these radicals from the exciplex are considered; either oxygen quenching of the exciplex or proton transfer within the exciplex followed by oxygen interception of the semireduced perylene diimide appear viable. For the reaction of DCA with 2-HH and oxygen, it is found that the much longer-lived exciplex undergoes quenching by oxygen.

Excimer

Diimide

Methylene

10.1021/jp983346t

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Citations (16)