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Dissertations / Theses on the topic 'Excited state intramolecular proton transfer (ESIPT)'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Le, Gourrierec Denis. "Excited state intramolecular proton transfer (ESIPT) to nitrogen in heterocyclic compounds." Thesis, University of Central Lancashire, 1996. http://clok.uclan.ac.uk/21906/.

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Excited state intramolecular proton transfer (ESIPT) reactions have aroused considerable interest in the last 10-15 years. The ESIPT reaction is normally extremely rapid and yields excited species of considerably lower energy than the initial Franck-Condon excited state. ESIPT has therefore been used for the rapid dissipation of energy (e. g. for polymer protection against UV degradation) and to produce fluorophores with large Stokes shifts. Approximately half of the compounds studied to date involve ESIPT to nitrogen but there has been no real attempt at a coherent study of ESIPT to nitrogen.

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2

Weragoda, Geethika K. "Excited state intramolecular proton transfer (ESIPT) and trans-cis isomerization on the triplet excited states." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439296134.

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3

Chen, Weihua. "Chemical Sensors Based on Fluorescence Turn-On Mechanism by Using Excited State Intramolecular Proton Transfer." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1334772708.

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4

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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5

Zhang, Wanying. "Comprehensive Study on Fluorescent ESIPT Liquid Crystal Materials and the Potential for Optoelectronic Applications." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263621.

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6

McDonald, Lucas J. "Synthesis and Characterization of Novel Flavonoid-Based Fluorescent Sensors and other Sensors with Excited State Intramolecular Proton Transfer for Biological Applications." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1524658238472646.

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7

Vérité, Pauline. "Modelling of excited state proton transfer in in fluorescent dyes." Thesis, Nantes, 2020. http://archive.bu.univ-nantes.fr/pollux/show.action?id=ebc433d0-1c13-4ae5-a308-9fafee57c623.

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Cette thèse est dédiée à l'exploration des surfaces d'énergie potentielle des états électroniques excités de colorants "ESIPT" (Excited-State Intramolecular Proton Transfer) à l'aide d'approches de chimie quantique. Le phénomène ESIPT s’observe typiquement dans des molécules présentant une liaison hydrogène intramoléculaire forte. Le changement de géométrie provoqué par ce transfert permet d’obtenir une grande différence entre l’absorption et l’émission (grand déplacement de Stokes), ouvrant la voie à de multiples applications. Le but de cette thèse est d'identifier les substituants les plus a

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8

Ortiz, Sánchez Juan Manuel. "Excited state intramolecular proton transfer reactions coupled with non adiabatic processes: electronic structure and quantum dynamical approaches." Doctoral thesis, Universitat Autònoma de Barcelona, 2009. http://hdl.handle.net/10803/3311.

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Els enllaços d'hidrogen són d'importància universal en química i bioquímica. Les propietats dels enllaços d'hidrogen en l'estat electrònic fonamental han estat estudiades durant molt anys. Malgrat tot, molt poc es coneix sobre les reaccions químiques on intervenen enllaços d'hidrogen en els estats electrònics excitats. Una de les reaccions més interessants són les transferències protòniques intramoleculars en estat excitat (ESIPT de les seves sigles en anglès), ja que juguen un paper crucial en una gran varietat de reaccions químiques fotoquímiques de gran rellevància.<br/>Les tècniques més m

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9

Parada, Giovanny A. "Synthesis of Biomimetic Systems for Proton and Electron Transfer Reactions in the Ground and Excited State." Doctoral thesis, Uppsala universitet, Institutionen för kemi - Ångström, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-251471.

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A detailed understanding of natural photosynthesis provides inspiration for the development of sustainable and renewable energy sources, i.e. a technology that is capable of converting solar energy directly into chemical fuels. This concept is called artificial photosynthesis. The work described in this thesis contains contributions to the development of artificial photosynthesis in two separate areas. The first one relates to light harvesting with a focus on the question of how electronic properties of photosensitizers can be tuned to allow for efficient photo-induced electron transfer proces

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10

Fukuda, Masanori. "Spectroscopic study on the relaxation phenomena of room temperature ionic liquids and the relation with excited state intramolecular proton transfer reaction." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/124446.

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11

Guzzo, Mariana Rizzi. "Estudo da complexação da fisetina com ciclodextrinas." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-10072008-143050/.

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Neste trabalho de Mestrado, foram feitos estudos do comportamento fotofísico da fisetina em diversos solventes através de medidas de absorção de luz UV-Visível, fluorescência estática e resolvida no tempo e da interação entre fisetina (3,3\',4\',7-tetrahidroxiflavona) e 7-hidroxiflavona com ciclodextrinas ( beta e gama) (CDs) através de experimentos de absorção de luz UV-Visível, sinal induzido de dicroísmo circular, fluorescência estática e resolvida no tempo, anisotropia de estado estacionário e RMN de 1H, focando a dependência destas medidas em função da temperatura e do pH. Os resultados e

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12

Lukeman, Matthew Joseph. "Excited state intramolecular proton transfer (ESIPT) to aromatic carbon." 2003. http://hdl.handle.net/1828/368.

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13

Behin, Aein Niloufar. "Photochemical and photophysical studies of Excited State Intramolecular Proton Transfer (ESIPT) in biphenyl compounds." Thesis, 2010. http://hdl.handle.net/1828/2944.

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This Thesis aims to examine the effects of substituents on the adjacent proton accepting phenyl ring with respect to a new type of excited state intramolecular proton transfer (ESIPT) process discovered by Wan and co-workers. Therefore, a number of 2-phenylphenols 23-28 were synthesized with electron-donor and electron-acceptor substituents such as methyl, methoxy, and ketone moieties on the adjacent proton accepting phenyl ring. The results obtained from examination of photochemical deuterium exchange showed that all derivatives except for ketone 27 underwent deuterium exchange (Фex = 0.019

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14

Chen, Young-Chang, and 陳永昌. "Excited-State Intramolecular Proton Transfer in 10-Hydroxybenzo[h]quinoline." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/55247241905897481395.

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博士<br>國立中正大學<br>化學研究所<br>88<br>Abstract The dynamics of excited state intramolecular proton transfer (ESIPT) in 10-hydroxybenzoquinoline (HBQ) and its deuterated analogue (DBQ) have been investigated by steady-state fluorescence spectroscopy, femtosecond fluorescence upconversion in combination with pump-probe transient absorption experiments. In cyclohexane the time scale for both proton and deuterium transfer in the excited state cannot be resolved under the response limit of the upconversion signal of ca.180 fs. Conversely, the proton-transfer rate is estimated to be ca. 150 fs-1

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15

Wu, Guo-Ray, and 吳國瑞. "The Intramolecular and Host/Guest Types of Excited-State Proton Transfer Reaction." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/71040220863836682037.

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博士<br>國立中正大學<br>化學研究所<br>90<br>The proton transfer depicts one of the most fundamental processes involved in chemical reactions as well as in living systems. Enormous numbers of research projects have been published regarding various types of proton transfer in ground as well as in the excited states. In my dissertation, the focus is mainly limited to the subject related to the excited-state proton transfer (ESPT) process, forming a proton-transfer tautomer. Correspondingly, photoinduced process involving excited-state proton dissociation and/or protonation in bulk solvents or cluster, which

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16

Chou, Yi-Hsuan, and 周宜萱. "Studies of Excited - State Intramolecular / Intermolecular Systems of Proton Transfer Current Interest." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/73673840204815291946.

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碩士<br>國立中正大學<br>化學研究所<br>88<br>The researching of the systems of proton transfer has been becoming more and more important since Waller presented his outstanding report of the proton transfer effect of methyl salicylate in 1955. Above all, the double proton transfer progression of DNA is the best remarkable one. Herewith, I prepared this memoir for illustrating some examples of proton transfer molecules with steady state system and pulse laser system to study their excited-state intramolecular / intermolecular systems of proton transfer. Primarily, we attempted to utiliz

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17

Liu, Jiun-Chi, and 劉俊騏. "A New Class of Amino-Type Excited-State Intramolecular Proton-Transfer Molecules." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/958qbg.

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18

Cheng, Yi-Ming, and 鄭宜明. "Excited-State Intramolecular Proton Transfer in 5-Hydroxyflavone and 10-Hydroxybenzo[h]quinoline." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/45702879868941115261.

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19

Hsieh, Re-Ming Ray, and 謝瑞明. "Ultrafast reaction dynamics studies of excited-state intramolecular proton transfer in gas phase." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/98464097814134442250.

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20

Su, Charlene, and 蘇夏琳. "Ultrafast Time-resolved Spectroscopic Studies of Gas-Phase Excited-State Intramolecular Proton Transfer Reactions." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/47285901332047010080.

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21

Hsu, Yen-Hao, and 許晏豪. "Synthesis of Excited-State Intramolecular Proton Transfer Compounds via Seven-Membered-Ring Hydrogen Bonding System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/60102131456263511518.

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碩士<br>國立臺灣大學<br>化學研究所<br>102<br>In part I, we successfully obtained the bifunctional ortho- green fluorescence protein (o-HBDI) derivative, o-PyMeGFP, synthesized by Knoevenagel type reaction. Due to unstable conformation of o-MePyGFP; However, we successfully synthesized o-PyPhGFP via molecular adjustment. o-PyPhGFP underwent excited-state intramolecular proton transfer process via seven-membered-ring hydrogen-bonding system and its emssion at 607 nm. Also, ZnCl2 was reacted with o-PyPhGFP to form a complex, which destructed intramolecular H-bond and obtained blue emission. In part II, accord

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22

Lin, Jui-Ying, and 林瑞映. "Studies of excited-state intramolecular proton transfer of o-hydroxyacetophenone and related molecules using ultrafast lasers." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/04916096905082999435.

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23

Lu, Chengii, and 呂政儀. "Ultrafast reaction dynamics study: Excited-state intramolecular proton transfer of gas phase 1-hydroxy-2-acetonaphthone." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/72825065555702192646.

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碩士<br>國立清華大學<br>化學系<br>87<br>Abstract The excited-state dynamics of 1-hydroxy-2-acetonaphthone (HAN) was studied in the gas phase using femtosecond time-resolved multiphoton ionization spectroscopy. Following femtosecond excitation to its S1 state, HAN was found to exhibit a biexponential decay behavior which can be consistently interpreted in terms of rapid excited-state intramolecular proton transfer (ESIPT) followed by other slower decay channels. The results revealed that ESIPT in HAN (S1) occurs in ~ 60 - 85 picoseconds in the energy range studied and suggested the existence of

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24

Kuo, Ting-Yi, and 郭廷逸. "Excited state intramolecular proton transfer in 3-hydroxy-2-(thiophen-2-yl) chromen-4-one and derivatives." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/88675120226062121813.

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碩士<br>國立臺灣大學<br>化學研究所<br>101<br>3-HTC-DiCN and 3-HTCA, the derivatives of 3-Hydroxy-2-(thiophen-2-yl) chromen-4-one(3-HTC) , they are the first two examples to observe the rate of ESIPT (Excited-State Intramolecular Proton Transfer ) are excitation wavelength dependent. At steady state emission spectra, we can see the ratio of normal form and tautomer form’s emission depends on excitation wavelength. By time-correlated single photon counting method, we observed the normal form and tautomer form are not equilibrium at excited state. So we use femtosecond fluorescence up-conversion to observe th

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25

Lin, Chun-Wei. "Studies of the Photophysical Properties and Kinetics in Photo-Induced Isomerization, Excited-State Intramolecular Proton Transfer and the Heavy-Metal Enhanced Phosphorescence." 2008. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-1607200822200100.

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26

Lin, Chun-Wei, and 林竣偉. "Studies of the Photophysical Properties and Kinetics in Photo-Induced Isomerization, Excited-State Intramolecular Proton Transfer and the Heavy-Metal Enhanced Phosphorescence." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/33429958932573631151.

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碩士<br>國立臺灣大學<br>化學研究所<br>96<br>Part I. The strategic design of a Salen ligand possessing strong excited-state charge transfer properties leads to a previously unrecognized feature in the photo-induced isomerization. The synthesis of 2,3-bis(4-(di-p-tolylamino)-2-hydroxybenzylideneamino) maleonitrile (1) rendered Z and E conformers in the absence and presence of room light, respectively. We conclude that the 1Z → 1E isomerization in the excited state is triggered by the rotation of the maleonitrile C(2)-C(3) (1Z) bond, which becomes single-bond like due to the photoinduced charge transfer react

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27

邱朝順. "Studies of Excited State Intramolecular Proton Transfer of 10-hydroxybenzo[h]quinoline and the Discussion of Detection Technique of Time-Resolved Thermal Lensing." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/73612541129886393735.

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碩士<br>國立中正大學<br>化學研究所<br>90<br>The low-lying triplet states of 10-hydroxybenzo[h]quinoline (HBQ) and its halogenated derivatives 7,9-diiodo-10-hydroxybenzo[h]quinoline (DIHBQ) in an excited-state intramolecular proton transfer (ESIPT) process have been investigated. For DIHBQ, enhanced by the intramolecular heavy atom effect, the proton-transfer tautomer (i.e. the keto form) phosphorescence maximized at 735 nm (p = 1.75 s) was resolved in a 77 K methylcyclohexane (MCH) glass. Further transient absorption and 1O2 sensitization experiments deduce the population yield and radiative decay rate o

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28

Liu, Ying-Hsuan, and 劉穎瑄. "Part I: Synthesis and Study of Excited-State Intermolecular Proton Transfer in 7-Aminoquinoline and its DerivativesPart II: Synthesis and Study of Planarized Intramolecular Charge Transfer in 1-Amino-7-azaindole and its Derivatives." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/37v8w9.

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碩士<br>國立臺灣大學<br>化學研究所<br>106<br>Part I 7-Aminoquinoline (7AQ) and its amino derivatives have been designed and synthesized to study their possible excited-state proton transfer (ESPT) reaction. Due to the far separation between the proton donor NR-H (D) and acceptor –N (A) sites, ESPT in 7AQ and analogues, if available, should proceed with solvent catalysis process. As a result, assisted by solvent molecules, TFA-7AQ, Ts-7AQ, Boc-7AQ and Ac-7AQ undergoes ESPT in alcohols such as methanol. Systematically probing ESPT spectroscopy and dynamics among all NR-H derivatives has been carried out in m

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29

Hsu, Cheng-Chih. "(1) High-Efficiency, Osmium(II)-Based Phosphorescent Materials: The Distinctive Photoluminescent Properties of Two Isomeric OsII Complexes Containing 2-pyridyl pyrazole Family Ligands (2)Ortho Green Fluorescence Protein Synthetic Chromophore; Excited-State Intramolecular Proton Transfer via a Seven-Membered-Ring Hydrogen-Bonding System." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-0307200717191300.

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