Article
Energy & Fuels
Qilin Wang, Shiyi Li, Zhibo Zheng, Zheng Chen, Zhenhua Jiang
Summary: In this study, a series of novel PAAS and PAAK type HPP electrochromic films were prepared directly on ITO substrates by electrochemical polymerization. The triphenylamine-based polymers showed higher optical contrast, shorter switching times, and better cycling stability compared to the carbazole-based polymers. Moreover, this work provides a simple and efficient method to synthesize polyarylsulfone/ketone-based electrochromic materials, reducing cost and improving production efficiency for large-scale production and practical applications.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Chemistry, Multidisciplinary
Jin-Long Wang, Jian-Wei Liu, Si-Zhe Sheng, Zhen He, Jie Gao, Shu-Hong Yu
Summary: By coassembling W18O49 and V2O5 nanowires, a novel multicolor electrochromic device is demonstrated, which shows dynamic color change upon application of different electrochemical biases. The transparency and color of the device can be easily controlled by manipulating the layers and ratios of coassembled nanowires, allowing for the fabrication of different patterns with corresponding masks. This solid electrochromic device assembled from nanowires has significant potentials in smart windows and multicolor electrochromic displays.
Article
Chemistry, Applied
Duygu Cevher, Sevki Can Cevher, Ali Cirpan
Summary: In this study, benzotriazole-based homopolymer (P-TBtz), copolymer (C-TBtzEdot), and bilayer composites (BTBtzEdot and B-EdotTBtz) were successfully prepared by electrochemical polymerization. The selected materials introduced multichromic property and improved charge storage capacity to the polymer films. Various electrochemical and optical characterizations were performed to evaluate the properties of the films. C-TBtzEdot exhibited the highest capacitance value among the films.
Review
Materials Science, Ceramics
Xing Guo, Xungang Diao, Wei Wang
Summary: This study prepared NiO films with large specific surface area and high stability using electron beam evaporation, and investigated their surface morphology, composition, electrochemical properties, and optical performance. The results confirm that both surface reaction and capacitive effect contribute to the excellent electrochromic performance of NiO films.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Guoqiang Kuang, Lei Wu, Cheng Yuan, Tian Ma, Yi Wang, Yijie Tao, Yue Kang, Shiguo Zhang
Summary: Two cross-linked copolymers containing twisted spirobifluorene (SBF) units were successfully synthesized via direct arylation polymerization (DArP) with low reaction temperature and catalyst addition. The resultant polymers were fully characterized by H Nuclear magnetic resonance (HNMR), gel permeation chromatography (GPC), thermo gravimetric analysis (TGA), Fourier Transform infrared spectroscopy (FTIR), Cyclic voltammo-gram (CV). Spectroelectrochemical measurements showed that the synthesized polymers had wide band gap and red color in their neutral state. Applying an oxidized potential made the polymer films highly transparent in their oxidized state. Additionally, two electrochromic devices were assembled based on these two copolymers, demonstrating good optical contrast, fast switching response, and good stability, indicating that the incorporation of SBF units into the poly(3,4-alkyldioxythiophene) mainchain can induce the synthesis of high-performance red-to-transparent electrochromic polymers.
Article
Electrochemistry
Nese Guven, Oznur Sener Cemaloglu, Pinar Camurlu
Summary: In this study, two new triphenylamine monomers were synthesized and electrochemically polymerized to fabricate electrochromic polymer films. The resulting films exhibited strong color changes, rapid switching responses, and high coloration efficiency. Additionally, successful electrochemical copolymerization of the monomers with 3,4-ethylenedioxythiophene was achieved, leading to significantly lowered band gap and enlarged color palette.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Eda Taga Akgul, Ahmet Ferat Uzdurmez, Handan Kamis, Emine Kilic, Muslum Demir
Summary: Two conducting macromolecules, P1 and P2, with adjustable color changes under an electric field were successfully fabricated on the ITO substrate via electrochemical polymerization for the first time. The P1 film exhibited yellowish-brown color in neutral and reduced states, and dark brown color in oxidized states, while the P2 film showed orange color in neutral states, brownish orange color in oxidized states, and dark brown color in reduced states. P1 showed higher conductivity, shorter switching time, and better stability, while P2 exhibited advanced chromic and electron-withdrawing characteristics attributed to the substituted phenyldiazenyl units and lower oxidation potential.
Article
Engineering, Environmental
Wenqian Yao, Peipei Liu, Congcong Liu, Jingkun Xu, Kaiwen Lin, Huan Kang, Meng Li, Xiaoqi Lan, Fengxing Jiang
Summary: The study investigated the molecular structure-induced changes of optical and electronic properties of furan heterocycle-based polymers. It found that P4Fu has the potential for dual-function electrochromic-supercapacitor applications, exhibiting noticeable multicolor, high coloration efficiency, and high specific capacitance, which are more attractive than polythiophene derivatives. This research lays an important foundation for environmentally compatible electronics and provides new green material options for high-available organic smart devices.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Yan-Ru Huang, Sheng-Huei Hsiao
Summary: This study synthesized five arylene diimides with multi-electrochromic properties and investigated their electrochemical activity, solubility, and switching stability. The results showed that the introduction of tert-butyl substituents on the PTZ active sites reduced the oxidation potential, increased solubility, and significantly improved the electrochromic performance. Electrochromic devices using these compounds as electroactive materials were constructed and their performance was studied.
Review
Chemistry, Inorganic & Nuclear
Manas Kumar Bera, Sudhanya Mohanty, Siddhartha Shankar Kashyap, Sanjib Sarmah
Summary: Electrochromic coordination nanosheets (CONASHs) have emerged as a new class of EC materials with high optical contrast, fast switching speed, high coloration efficiency, and high durability.
COORDINATION CHEMISTRY REVIEWS
(2022)
Review
Energy & Fuels
Suhas H. Sutar, Bapuso M. Babar, Komal B. Pisal, Akbar I. Inamdar, Sarfraj H. Mujawar
Summary: Smart and multifunctional devices are gaining interest in the scientific community as technological advancements increase. Supercapacitors, with their high energy and power density capabilities, can bridge the gap between batteries and fuel cells. This article discusses the potential and performance of NiO-based electrochromic technology in various applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Shibna Balakrishnan, Ranjana Venugopal, Aswathi Harikumar, Biswapriya Deb, Joshy Joseph
Summary: Triphenylamine derivatives, C-Sty2 and C-Sty3, are promising organic electrochromic materials with easy synthesis, low oxidation potentials, high charge-carrier mobilities, electrochemical stability, coloration efficiency, and tunability of EC properties. The hyper-cross-linked derivative C-Sty3 demonstrates enhanced coloration efficiency, optical contrast, and open-circuit memory compared to C-Sty2, highlighting the significance of highly branched conducting polymers in EC applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Applied
Keon-Woo Kim, Jae Kyeong Lee, Xiaowu Tang, Yujeong Lee, Jihyeon Yeo, Hong Chul Moon, Seung Woo Lee, Se Hyun Kim
Summary: EC materials, particularly EC polymers, show promise for applications in smart windows and information displays due to their color tuning capabilities. A new EC polymer with redox-active triphenylamine and viologen was synthesized and utilized in ECDs, demonstrating multiple colors based on applied voltage. Additionally, voltage-tunable multicolor EC displays were successfully created using EFAD printing.
Article
Chemistry, Physical
Abdulhadi H. Almarri
Summary: This article presents a new approach to synthesize and stabilize titanium dioxide using polyol synthesis, and investigates the electrochromic properties of titanium dioxide thin films. The addition of a PEDOT:PSS hybrid composite film enhances the electrochromic performance of titanium dioxide. A flexible electrochromic device is successfully built, demonstrating reversible electrochromic properties.
Article
Materials Science, Multidisciplinary
Pinar Koc Bakacak, Sebahattin Tuzemen, Coskun Kocabas
Summary: In this study, a simple, low-cost, high-efficiency electrochromic device was fabricated by obtaining multi-layer graphene samples with specific growth temperatures, and characterized for their electrical and optical properties. A flexible graphene surface without an extra electrode was successfully produced to achieve efficient electrochromic performance, with threshold voltage of 2.5V in the near-infrared region and a 60% increase over 3V in optical modulation. Additionally, a decrease of up to approximately 50% in layer resistance was observed in electrical characterization studies.
Article
Electrochemistry
Roxana-Mihaela Apetrei, Pinar Camurlu
ELECTROCHIMICA ACTA
(2020)
Article
Chemistry, Organic
Deniz Tozendemir, Cihangir Tanyeli
Summary: Cinchona alkaloid-derived organocatalysts have been widely utilized in asymmetric transformations, resulting in products with high enantiopurity. A bifunctional quinine-derived sulfonamide organocatalyst was developed for catalyzing the asymmetric sulfa-Michael reaction, achieving high enantioselectivity with low catalyst loading. The enriched sulfa-Michael addition products were successfully oxidized to obtain the corresponding sulfones.
BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Review
Chemistry, Organic
Zeynep Dilsad Susam, Cihangir Tanyeli
Summary: Chiral organocatalysts have been widely used in the synthesis of asymmetric compounds with remarkable stereoselectivities over the past 30 years due to their eco-friendly, non-toxic, highly stable, and inexpensive characteristics. Moreover, recyclable organocatalyst studies are gaining great interest for their environmental-friendly feature. Increasing the usage of these catalysts by saving the asymmetric results could become the most desirable characteristic in the near future.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Roxana-Mihaela Apetrei, Pinar Camurlu
Summary: The study compared glucose detection efficiency between enzymatic and non-enzymatic sensing platforms. It found that the non-enzymatic sensor was more sensitive and had similar detection limits compared to the enzymatic sensor, with the addition of MWCNTs improving the performance of the non-enzymatic configuration.
BIOELECTROCHEMISTRY
(2021)
Article
Electrochemistry
Ayhan Altun, Roxana-Mihaela Apetrei, Pinar Camurlu
Summary: Biosensing devices for urea detection have been extensively studied due to the importance of analyzing urea levels in biological fluids. The use of specific electrochemical methods and bio-materials have shown promising results for accurate urea detection, potentially playing a crucial role in clinical diagnostics.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Materials Science, Biomaterials
Nese Guven, Roxana-Mihaela Apetrei, Pinar Camurlu
Summary: The study introduces a novel glucose biosensor using redox mediator immobilized within nanofibrous mats, improving the detection accuracy and response time. By adjusting the Fc content, the biosensor performance was optimized, with a linear range up to 8.0 x 10(-3) M, sensitivity of 27.1 mAM(-1) cm(-2), and a detection limit of 4.0 mu M.
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Electrochemistry
Roxana-Mihaela Apetrei, Nese Guven, Pinar Camurlu
Summary: This study compares the biosensing performance of composite polyacrylonitrile nanofibers (PAN NFs) electrospun with different carbonaceous fillers and finds that carboxyl functionalized-multiwall carbon nanotubes-NFs exhibit the highest sensitivity and glucose oxidase (GOD) is a suitable model enzyme for immobilization. Reduced graphene oxide-NFs show lower detection limit within a wide linear range.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Electrochemistry
Nese Guven, Oznur Sener Cemaloglu, Pinar Camurlu
Summary: In this study, two new triphenylamine monomers were synthesized and electrochemically polymerized to fabricate electrochromic polymer films. The resulting films exhibited strong color changes, rapid switching responses, and high coloration efficiency. Additionally, successful electrochemical copolymerization of the monomers with 3,4-ethylenedioxythiophene was achieved, leading to significantly lowered band gap and enlarged color palette.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Zeynep Dilsad Susam, Merve Bozdemir, Gulsum Gundogdu, Cihangir Tanyeli
Summary: An asymmetric organocatalytic domino type Michael-S(N)2 reaction was developed to synthesize enantiomerically enriched dihydrofuran derivatives, demonstrating high efficiency and enantioselectivity.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Elif Merve Ozer, Roxana-Mihaela Apetrei, Pinar Camurlu
Summary: This study proposed a method using composite polyacrylonitrile nanofibrous assemblies enriched with multi-wall carbon nanotubes as immobilization platforms for tyrosinase cross-linking, showing high sensitivity in detecting phenolics in water contamination. The biosensor demonstrated great detection performance for trace amounts of phenolics in water samples.
Article
Electrochemistry
Nese Guven, Baris Yucel, Hajar Sultanova, Pinar Camurlu
Summary: In this study, electrochromic metallopolymers were obtained by tethering 2,5-dithienylpyrrole units to ruthenium(II) bipiridyl complexes and electrochemically polymerizing them. The relationship between the monomer structure and optoelectronic properties of the metallopolymers was investigated, and the addition of the Ru complex as a side chain substituent enhanced the ambipolar and multichromic behavior of the polymers.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Organic
Zeynep Dilsad Susam, Bilge Deniz Ozcan, Enis Kurtkaya, Erol Yildirim, Cihangir Tanyeli
Summary: In this study, bifunctional quinine-derived organocatalysts were used to catalyze the asymmetric Friedel-Crafts/S(N)2 domino reaction, resulting in enantiomerically enriched products. Density functional theory calculations were also performed to explain the stereoselectivity of the products.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Murat Isik, Esra Dundar, Ertan Sahin, Cihangir Tanyeli
Summary: In this study, we report a boron dipyrromethene compound that is chiral at boron and carbon. The synthesis of this compound can be achieved through a two-pot, one-step process. By analyzing the electronic circular dichroism spectra of chiral high performance liquid chromatography-resolved enantiomers, we found efficient chirality induction in the otherwise achiral BODIPY. The dye exhibits unusually weak fluorescence, which can be attributed to vibrational relaxations and the reduced symmetry of the molecular geometry that facilitates probable intersystem crossing.
CHEMICAL COMMUNICATIONS
(2022)
Article
Electrochemistry
Ayhan Altun, Roxana-Mihaela Apetrei, Pinar Camurlu
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2020)
Article
Chemistry, Organic
Seda Karahan, Cihangir Tanyeli
ORGANIC & BIOMOLECULAR CHEMISTRY
(2020)
