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Dissertations / Theses on the topic 'Properties of cyanine dyes'

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Published: 4 June 2025

Last updated: 15 July 2025

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1

Fernando, Nilmi T. "Novel Near-Infrared Cyanine Dyes for Fluorescence Imaging in Biological Systems." Digital Archive @ GSU, 2011. http://digitalarchive.gsu.edu/chemistry_diss/57.

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Heptamethine cyanine dyes are attractive compounds for imaging purposes in biomedical applications because of their chemical and photophysical properties exhibited in the near-infrared region. A series of meso amino-substituted heptamethine cyanine dyes with indolenine, benz[e]indolenine and benz[c,d]indolenine heterocyclic moieties were synthesized and their spectral properties including fluorescence quntum yield were investigated in ethanol and ethanol/water mixture. Upon substitution with amines, the absorption maxima of the dyes shifted to the lower wavelength region (~600 nm), showed lar

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2

Eisele, Dörthe Melitta. "Optical, structural and redox properties of nanotubular j-aggregates of amphiphilic cyanine dyes." Aachen Shaker, 2009. http://d-nb.info/1002585198/04.

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3

Eisele, Dörthe M. [Verfasser]. "Optical, Structural and Redox Properties of Nanotubular J-aggregates of Amphiphilic Cyanine Dyes / Dörthe M Eisele." Aachen : Shaker, 2010. http://d-nb.info/1120864127/34.

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4

Yau, C. M. Simon. "The synthesis and properties of cyanine dye rotaxanes." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540266.

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5

Gragg, Jamie Loretta. "Synthesis of Near-Infrared Heptamethine Cyanine Dyes." Digital Archive @ GSU, 2010. http://digitalarchive.gsu.edu/chemistry_theses/28.

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Carbocyanine dyes are organic compounds containing chains of conjugated methine groups with electron-donating and electron-withdrawing substituents at the terminal heterocycles of the general formula [R1-(CH)n-R2]+X-. The synthetic methodology and optical properties of carbocyanines will be discussed. This thesis consists of two parts: (A) synthesis and optical properties of novel carbocyanine dyes substituted with various amines and the synthesis of unsymmetrical carbocyanine dyes containing monofunctional groups for bioconjugation. (B) synthesis of heptamethine carbocyanine dyes to be used f

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6

Hake, Jennifer Louise. "Solid-phase synthesis and applications of cyanine dyes." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613994.

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7

Fegan, Adrian. "Cyanine dyes : synthesis and applications as nucleic acid labels." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611861.

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8

Mason, Stephen John. "Studies on the solid-phase synthesis of cyanine dyes." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620058.

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9

Paranjpe, Shirish. "Synthesis of Novel Fluorescent Benzothiazole Cyanine Dyes as Potential Imaging Agents." Digital Archive @ GSU, 2012. http://digitalarchive.gsu.edu/chemistry_theses/55.

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Near-infrared (NIR) fluorescence imaging has emerged as an attractive non-invasive approach for direct visualization of diseases which depends on the development of stable, highly specific and sensitive optical probes. The NIR region of the electronic spectrum offers a reduction in the background autofluorescence and an increase in the tissue penetration depth. Cyanine dyes have often been considered promising contrast optic agents owing to their photophysical properties. Herein the synthesis of various penta- and heptamethine benzothiazole cyanine dyes has been described and their in vivo ima

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10

Osedach, Timothy. "Colloidal Quantum Dots and J-Aggregating Cyanine Dyes for Infrared Photodetection." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10088.

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The emergence of nanostructured semiconducting materials enables new approaches toward the realization of photodetectors that operate in the technologically important near- and short-wave infrared (NIR and SWIR) spectral ranges. In particular, organic semiconductors and colloidal quantum dots (QDs) possess numerous advantages over conventional crystalline semiconductors including highly tunable optical and electronic characteristics, the prospect for low-temperature processing, and compatibility with inexpensive and exible substrates. Photodetectors based on such materials may lead to low-cost

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11

Cao, Yumeng Melody. "Photostabilization of J-aggregate cyanine dyes for exciton-polariton based devices." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/118061.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 67-69).<br>Organic molecules are becoming a commonly used material in strongly coupled systems as they possess large exciton binding energies and huge oscillator strengths that have allowed for the creation of room temperature polariton condensates, superfluids, and other exotic phenomena. Using J-aggregates, the aggregated form of cyanine organic dyes, we have previously fabricated light-emi

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12

Kim, Junseok. "Bioanalytical Applications of Intramolecular H-Complexes of Near Infrared Bis(Heptamethine Cyanine) Dyes." Digital Archive @ GSU, 2008. http://digitalarchive.gsu.edu/chemistry_diss/23.

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This dissertation describes the advantages and feasibility of newly synthesized near-infrared (NIR) bis-heptamethine cyanine (BHmC) dyes for non-covalent labeling schemes. The NIR BHmCs were synthesized for biomolecule assay. The advantages of NIR BHmCs for biomolecule labeling and the instrumental advantages of the near-infrared region are also demonstrated. Chapter 1 introduces the theory and applications of dye chemistry. For bioanalysis, this chapter presents covalent and non-covalent labeling. The covalent labeling depends on the functionality of amino acids and the non-covalent labeling

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13

Norouzi, Neil. "Synthesis and application of novel near infrared cyanine dyes and optical imaging agents." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/10002.

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The use of fluorescent imaging probes for the real time detection of cellular malfunctions, such as enzyme over expression has shown promise. Fluorescent dyes with absorption and emission values below 600 nm are limited in their in vivo applications due to high background auto-fluorescence and low resolution images. Employing near infrared (NIR) fluorophores such as cyanine dyes can overcome this disadvantage. Cyanine dyes can be synthesised using solution or solid-phase techniques with the use of solution phase chemistry allowing for larger scale and higher yielding reactions. Utilising a sel

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14

Kringle, Loni. "Local Structure and Dynamics of Exciton-Coupled Cyanine Dimers Labeled in DNA." Thesis, University of Oregon, 2018. http://hdl.handle.net/1794/23749.

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Understanding the properties of electronically interacting molecular chromophores, which involve internally coupled electronic-vibrational motions, is important to the spectroscopy of many biological systems. Here we apply linear absorption, circular dichroism, and two-dimensional fluorescence spectroscopy to study the local structure and excited state dynamics of excitonically coupled cyanine dimers that are rigidly positioned within the sugar-phosphate backbones of the DNA. Dimer probes were positioned within the double-stranded DNA duplex and at the single-strand/double-stranded DNA junctio

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15

Bohac, P., A. Czimerova, and J. Bujdak. "One – and Two-Step Resonance Energy Transfer Between Cyanine Dyes in Layered Silicates Colloidal Systems." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35306.

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Resonance energy transfer (RET) is of high interest for both the basic research and practical applications. It is a phenomenon of radiationless transmission of energy between donor and acceptor molecules. In this study single- and two-step (RET) was investigated between cyanine dye cations (NK1, NK2, NK3) in colloids of layered silicate, synthetic Sumecton saponite. In these systems the dye molecules played role of the energy donors (NK1) or energy acceptors (NK2, NK3) or both (NK2). The adsorption and formation of various types of dye species was studied using visible spectroscopy. The a

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16

Spenkuch, Felix Michael [Verfasser]. "Enzyme tRNA interaction and (t)RNA conformation probed via environmentally sensitive cyanine dyes / Felix Michael Spenkuch." Mainz : Universitätsbibliothek Mainz, 2014. http://d-nb.info/1060232200/34.

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17

Hallworth, Georgina Louise. "Exploring the influence of structural variation on the solution and solid-state behaviour of cyanine dyes." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/72960/.

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Cyanine dyes are well known and extensively studied molecules. The preparations and investigations of a wide range of dyes have been previously reported. Here several novel and known compounds have been synthesised to investigate the effect molecular structure has on their bulk-solution and solid-state behaviour. The preparations of sulfur-containing tri- and monomethine dyes were more reliable, hence the majority of these studies concerned sulfur analogues. Successful crystallisation of these products resulted in many novel crystal structures being obtained and compared. The monomethine dyes

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18

Sjöqvist, Jonas. "Luminescence properties of flexible conjugated dyes." Licentiate thesis, Linköpings universitet, Beräkningsfysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-75191.

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In this licentiate thesis the luminescence properties of two flexible conjugated dyes have been studied. The first, Pt1, is a platinum(II) acetylide chromophore used in optical power limiting materials. The second is a set of optical probes known as luminescent conjugated oligothiophenes (LCOs), which are used to detect and characterize the protein structures associated with amyloid diseases such as Alzheimer’s disease. MM3 and CHARMM force field parameters have been derived for the Pt1 chromophore and LCOs, respectively, based on potential energy surface references calculated at the density f

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19

Matichak, Jonathan D. "The design, synthesis, and characterization of polymethine dyes for all-optical signal processing applications." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/41050.

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Material development is necessary before all-optical signal processing (AOSP) can be realized. Traditional AOSP will require materials with a large magnitude of the real part of the third-order polarizability, while having a small imaginary magnitude of third-order polarizability. The aim of this thesis is to investigate the potential for polymethine dyes to be used for AOSP applications. The basic structure of a polymethine dye was synthetically modified in a variety of positions to observe the effects upon the linear and nonlinear optical properties. The modifications included variation

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20

Watson, Amy Dawn. "Binding studies of near infrared cyanine dyes with human serum albumin anf poly-l-lysine using optical spectroscopy methods." unrestricted, 2006. http://etd.gsu.edu/theses/available/etd-01042008-154159/.

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Thesis (Ph. D.)--Georgia State University, 2006.<br>Title from file title page. Gabor Patonay, committee chair; Zhen Huang, Alfons Baumstark, committee members. Electronic text (236 p. : ill. (some col.)) : digital, PDF file. Description based on contents viewed Jan. 28, 2008. Includes bibliographical references.

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21

Watson, Amy Dawn. "Binding Studies of Near Infrared Cyanine Dyes with Human Serum Albumin and Poly-L-Lysine Using Optical Spectroscopy Methods." Digital Archive @ GSU, 2008. http://digitalarchive.gsu.edu/chemistry_diss/15.

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The sensitivity of biological studies performed between 190 and 650 nm is greatly reduced due to the autofluorescence of biomolecules and impurities in this region. Therefore, the enhanced signal-to-noise ratios encountered at longer wavelengths makes biological analysis within the near infrared (NIR) region from 650 nm to 1100 nm far more advantageous. This dissertation describes the noncovalent binding interactions of near-infrared (NIR) carbocyanine dyes with human serum albumin (HSA) and poly-L-lysine (PLL) using UV-Vis/NIR absorption spectroscopy, emission spectroscopy, circular dichro

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22

Mickelson, Leah E. "Cyanine Dye Interactions with Quadruplex and Duplex DNA: Changes in Conformation, Stability, and Affinity." Digital Archive @ GSU, 2011. http://digitalarchive.gsu.edu/chemistry_theses/38.

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There is a high demand for quadruplex-specific compounds that not only bind preferentially to quadruplex DNA over duplex DNA, but also bind to one quadruplex motif over other motifs. Quadruplex structures are recognized as common occurrences in cancer cells, and if a compound could stabilize this structure, it may serve as an effective anti-cancer treatment with minimal side effects. In this study, cyanine dyes’ interactions with DNA were analyzed with fluorescence titrations, UV-Vis thermal studies, circular dichroism titrations, and surface plasmon resonance (SPR) analysis. With these tec

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23

Chapman, Gala M. "Spectroscopic Studies of Carbocyanine and 2,4,6- Trisubstituted Pyridine Dyes for Bioanalytical and pH Indicating Applications." Digital Archive @ GSU, 2011. http://digitalarchive.gsu.edu/chemistry_theses/47.

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In part A, the effect of varying short-chain alkyl substitution on the spectroscopic properties of cyanine dyes was examined. Molar absorptivities and quantum yields were determined for groups of pentamethine and heptamethine dyes for which the substitution of the indole nitrogen was varied. For both sets of dyes, increasing alkyl chain length did not significantly change quantum yield or molar absorptivity. These results may be useful in designing new cyanine dyes. In part B, the effect of structure on the suitability of 2,4,6-trisubstituted pyridines as color pH indicators was studied by det

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24

Swatton, Stewart Nathan Ridgley. "Dynamic excited state properties of organic dyes." Thesis, University of Exeter, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244422.

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25

Dyer, A. N. "The effect of aggregation and orientation of amphiphilic molecules on second-harmonic generation within Langmuir-Blodgett films." Thesis, Cranfield University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341049.

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26

Dahal, Dipendra Dahal. "SYNTHESIS AND CHARACTERIZATION OF NOVEL EXCITED STATE INTRAMOLECULAR PROTON TRANSFER (ESIPT) CYANINE DYES WITH NEAR INFRARED (NIR) EMISSION FOR BIOLOGICAL APPLICATIONS." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1567644552737644.

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27

George, Christopher David. "Nonlinear optical and electrical properties of hemicyanine dyes." Thesis, Cranfield University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284915.

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28

Boyle, Kevin J. "Synthesis and properties of new heterocyclic metallised dyes." Thesis, University of Edinburgh, 2005. http://hdl.handle.net/1842/12580.

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Various 3-substituted isoquinolin-4-ols have been successfully synthesised by two different methodologies. Treatment of isoquinoline <i>N</i>-oxide with <i>p</i>-toluenesulfonyl chloride, provided 4-(<i>p</i>-toluenesulfonyloxy) isoquinoline in 30% yield and high purity <i>via </i>rearrangement of an intermediate <i>N</i>-(<i>p</i>-toluenesulfonyloxy) compound. Isoquinolin-4-ol was then obtained, after acid hydrolysis of 4-(<i>p</i>-toluenesulfonyloxy) isoquinoline. 3-Methylisoquinolin-4-ol has been synthesised in a similar manner and yield, from 3-methylisoquinoline <i>N</i>-oxide <i>via </i>

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29

Zalim, Nalan. "Synthesis And Ion Sensing Properties Of Novel Boradiazaindacene Dyes." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/4/1046051/index.pdf.

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The derivatives of boradiazaindacene (BODIPY) are highly fluorescent dyes which have quantum yields near 1.0. These dyes that have exceptional spectral and photophysical stability as compared to other fluorescent groups are used for several different applications. The fluorescent sensor molecules for the detection of cations with PET (photoinduced-electron transfer) mechanism in general have been obtained by the differentiation of the BODIPY core. The extension of conjugation over the pyrrole ring shifts the absorption and emission at longer wavelength. Moreover, it is seen that red emission o

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30

Burnham, Paul Michael. "Synthesis and properties of some novel phthalocyanine functional dyes." Thesis, University of East Anglia, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268574.

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31

Scháberle, Fábio Antonio. "Estudo das características espectroscópicas dos corantes ciânicos com dois cromóforos na interação com DNA: efeitos da força iônica." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/59/59135/tde-02112002-144416/.

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O câncer é uma patologia responsável por um grande número de óbitos. Os tratamentos convencionais, quimioterapia e radioterapia, nem sempre são eficientes e, além disso, os efeitos colaterais são intrínsecos às terapias. A partir da década de 70 surgiu uma nova forma de terapia chamada de terapia fotodinâmica (Photodynamic Therapy, PDT) que apresenta poucos efeitos colaterais quando comparada com as terapias convencionais. O princípio da PDT é introduzir no organismo um composto fotoativo e irradiar com luz visível o local a ser tratado, obtendo assim a forma ativa do composto que induz a

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32

Bisht, R. "NIR active squaraine dyes for dye-sensitized solar cells: modulating aggregation, orientation and electronic properties of the dyes." Thesis(Ph.D.), CSIR-National Chemical Laboratory, 2018. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/4349.

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Squaraine dyes are a subclass of polymethine dyes, which owing to its low band gap and strong absorption (ε >105 M−1 cm−1) in the far-red and NIR region have found application in dye-sensitized solar cells. While the squaraine dyes have excellent absorption in the far-red region, the exciton quenching by aggregation limits its overall performance in dye-sensitized solar cells. The aggregates form when the dipoles of the molecules interact with each other due to pi-pi interaction. When a molecule absorbs light and reaches excited state, the photoexcited electron in the LUMO state hops between t

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33

Zongo, Sidiki. "Nonlinear optical properties of natural dyes based on optical resonance." Thesis, University of the Western Cape, 2012. http://hdl.handle.net/11394/4635.

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>Magister Scientiae - MSc<br>Recent research shows that the study of optical properties of organic material natural dyes has gained much consideration. The specific functional groups in several natural dyes remain essential for the large nonlinear absorption expressed in terms of nonlinear optical susceptibilities or other mechanism of absorption such as two photon absorption (TPA), reverse saturable absorption (RSA) or intensitydependent refractive index characteristic. In this thesis we highlight the optical limiting responses of selected natural dyes as nonlinear response in the femtosecond

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34

Johnson, David G. "An investigation of excited state properties of some rhodamine dyes." Thesis, University of Salford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484197.

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35

Gandolfo, D. S. "The electrical and optical properties of non linear organic dyes." Thesis, Cranfield University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274221.

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36

May, Aviwe Khanya. "Photosensitizer, pH sensing and optical limiting properties of BODIPY dyes." Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/63964.

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A series of BODIPY dyes have been successfully synthesised and structurally characterised to examine the effect of halogenation at the 2,6-positions and the introduction of styryl and vinylene groups at the 3,5-positions. The photophysical properties were studied, to assess the effect of the enhancement of the rate of intersystem crossing through halogenation on the fluorescence properties and the generation of reactive oxygen species. This is important in the assessment of the suitability of applying these molecules as photosensitizer dyes for photodynamic therapy and photodynamic antimicrobi

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37

Scháberle, Fábio Antonio. "Efeitos do meio e da interação com DNA e Micelas nas características espectrais dos corantes ciânicos com dois cromóforos." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/59/59135/tde-17092007-211526/.

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A terapia fotodinâmica (PDT) consiste em introduzir no organismo um composto fotoativo (fotossensibilizador) e irradiar o local a ser tratado com a luz visível. Este procedimento permite obter a(s) forma(s) ativa(s) do composto que tem a capacidade de matar células neoplásicas, bem como fungos e bactérias. Algumas desvantagens dos fotossensibilizadores atualmente aplicados na clínica estimulam a busca de novos compostos mais adequados. Os corantes ciânicos com dois cromóforos (BCD) possuem características espectrais promissoras para aplicação em PDT. Isso estimulou a realização deste trabalho

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38

Garrison, Seth Thomas. "Catalytic Properties and Mechanical Behavior of Metallic Glass Powders." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc984273/.

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Lack of crystalline order and microstructural features such as grain/grain-boundary in metallic glasses results in a suite of remarkable attributes including very high strength, close to theoretical elasticity, high corrosion and wear resistance, and soft magnetic properties. By altering the morphology and tuning of composition, MGs may be transformed into high-performance catalytic materials. In this study, the catalytic properties of metallic glass powders were demonstrated in dissociating toxic organic chemicals such as AZO dye. BMG powders showed superior performance compared to state of t

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39

Hlatshwayo, Zweli Thabiso. "Donor-acceptor effects on the optical limiting properties of BODIPY dyes." Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/63368.

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The main objectives of the research described in this thesis were firstly to synthesize and characterize a series of structurally related BODIPY dyes that are potentially suitable for use in applications, secondly to conjugate a carboxylic acid substituted BODIPY dye to amine-functionalized upconversion nanoparticles (UCNPs) through an amide bond to enable singlet oxygen production upon irradiation at 978 nm in the biological window for tissue penetration for biomedical applications, and thirdly to compare the nonlinear optical (NLO) properties of various BODIPY dyes to determine whether push-

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Todd, Richard Samuel Joseph. "The optical properties of triazinylaniline dyes in homogeneous and organized media." Thesis, University of Ulster, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328231.

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Gerowska, Marta. "Synthesis and properties of new fluorescent dyes and dye-labelled oligonucleotides." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/348171/.

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Fluorescence is widely used in DNA sequencing and genetic analysis. Novel fluorescence techniques for studying nucleic acids and other biologically important molecules are constantly being developed. In order to provide efficient probes with desired fluorescent properties, new fluorophores and nucleic acids labelling chemistries are required. The synthesis of various cyanine dyes derivatives is described in this thesis. Dyes were designed for NHS-ester and click chemistry labelling of oligonucleotides. Additionally the synthesis of disperse blue quencher and a 2′-mesyl-modified thymidine monom

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Ibrayev, N. Kh, E. V. Seliverstova, A. R. Tencurina, А. А. Ischenko, and А. Yu Shargaeva. "Preparation and Properties of Nanofilms Based on Polymethine Dyes by Langmuir-Blodgett Technology." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35155.

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A study of physico-chemical properties of monomolecular layers of amphiphilic cationic polymethine dye - thiacarbocyanine on the surface of the water subphase and the conditions of obtaining of Langmuir- Blodgett (LB) films are presented. The value of area, occupied by one molecule of the dye in different states of monolayer was defined. The spectral-luminescent properties of cationic polymethine dye was studied. An excimer fluorescence in LB films was revealed. It was shown, that in LB films, unlike solutions excimer not forms from monomers, but it forms from dimers of dyes. A possible m

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43

Hsieh, Fang-Yun, and 薛芳芸. "Synthesis and Properties of Cyanine Dyes." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/51390710263393154244.

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碩士<br>長庚大學<br>化工與材料工程研究所<br>92<br>Due to the coming of technical age, there is a big breakthrough in recording medium industry. The developments of compact disc toward to light weight, thin thickness, high capacity and density of data storage. Among several influential parameters, the key successful factor is the dye materials. The aim of this study is focused on the synthesis, characterization, and basic physical properties of cyanine dyes with different lengths of conjugated bonds, and their influences on the functions of compact discs are also evaluated. Moreover, the fluorescent properti

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44

Dost, Tyler L. "Synthesis and Determination of Optical Properties of Selected Pentamethine Carbocyanine Dyes." 2016. http://scholarworks.gsu.edu/chemistry_theses/90.

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This thesis begins with a brief review about the role and importance of the small molecules containing fluorine atoms in medicine and imaging. Then, the first part of the thesis will discuss the synthesis, purification and characterization of pentamethine cyanine dyes. The structure identification of the final dyes is done by using 1H NMR, 13C NMR, 19F NMR, and mass spectrometry. The studies performed after full characterization were the determination of optical and physicochemical properties. After these properties were performed, the fluorophores were evaluated to be good candidates for in v

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45

Hsiao, Jen-Hao, and 蕭人豪. "Study on the Modification and Properties of Ethyl Cellulose with Cyanine Dye." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/48626935729137497816.

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碩士<br>長庚大學<br>化工與材料工程研究所<br>92<br>The aim of this study is to synthesis ethyl cellulose grafted with dye moleculars, such as indoles and cyanine dyes. The optical properties of synthesized materials were analyzed by Ultraviolet-Visible (UV-Vis) Spectroscopy, Infrared (IR) Spectroscopy, and Photoluminescence Spectroscopy (PL). The thermal properties were measured by Thermogravimetric Analyzer (TGA) and Differential Scanning Calorimeter (DSC). The crystallization phenomena were investigated by DSC and Polarized Optical Microscope (POM). The solubility and Gel Permeation Chromatograph (GPC) were

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46

ROMANCOVÁ, Ingrid. "Binding of Cyanine Fluorescent Probes to DNA." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-253031.

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This master thesis is focused on theoretical study of the Cy3 and Cy5 dyes and their interactions with DNA. The main aim was to find the mot populated conformations of the Cy3-DNA and Cy5-DNA complexes. A comparison with the experimental structure was also done and the influence of the cyanine dyes on the conformational changes of the DNA chain was evaluated.

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Chen, Ching-Huang, and 陳慶晃. "Synthesis and Characterization of Cyanine Dyes for Optical Recording Medium." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/63091531261538305558.

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碩士<br>元智大學<br>化學工程與材料科學學系<br>95<br>In order to meet the rapidly growing demand for optical recording media capacity, the introduction of DVD-R has become the main solution to achieve this goal. The cyanine dyes have features including good solubility, high molar extinction coefficient, easy to form films, proper thermal decomposition temperature, and no toxicity. On the other hand, the desired wavelength could also be easily achieved by either adjusting the chain length between two heterocyclic rings or the functionality on the benzene ring. Therefore, the main purpose of this research was to

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Lewis, Erica. "Spectroscopic Studies of Cyanine Dyes and Serum Albumins for Bioanalytical Applications." 2015. http://scholarworks.gsu.edu/chemistry_theses/72.

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The use of cyanine dyes in bioanalytical applications has become a widely explored topic of interest in chemistry. Their ability to absorb and fluoresce in the UV-visible and near-infrared region of the electromagnetic spectrum benefits their use as imaging probes and fluorescent labels due to the reduced auto-fluorescence from biological molecules. The behavior of these dyes lies in their structure which consists of two nitrogen containing heterocycles joined by an electron deficient polymethine bridge that allows specific energy transitions to occur. The first portion of this work aims to ex

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Huynh, Hang T. "Cyanine Dyes Targeting G-quadruplex DNA: Significance in Sequence and Conformation Selectivity." 2015. http://scholarworks.gsu.edu/chemistry_theses/80.

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Small molecules interacting with DNA is an emerging theme in scientific research due to its specificity and minimal side-effect. Moreover, a large amount of research has been done on finding compounds that can stabilize G-quadruplex DNA, a non-canonical secondary DNA structure, to inhibit cancerous cell proliferation. G-quadruplex DNA is found in the guanine-rich region of the chromosome that has an important role in protecting chromosomes from unwinding, participate in gene expression, contribute in the control replication of cells and more. In this research, rationally designed, synthetic

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Ting, So-yi, and 丁守儀. "Application and Study of Cyanine and Azo Dyes for Dye-Sensitized Solar Cell." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/65321104153239518066.

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碩士<br>義守大學<br>生物技術與化學工程研究所碩士班<br>97<br>The aim of this study is developing efficient and stable dye sensitized solar cells. We focus on the development of the following two key materials: 1. the organic dyes do not contain noble metals; 2.high specific surface area nanocrystalline TiO2 electrodes. In the part of dyes, we have designed and synthesized the Azo dye having absorption of short wavelength, and mixed it with the Cyanine dye having absorption of long wavelength instead of single dye system to utilize the broad spectrum of sunlight. The performances of DSSCs fabricated in the mixed dye

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