國立高雄大學圖資館 |

Language: English

Back

Development of Novel Molecular Photoswitches for Their Applications in Photon Energy Storage and Catalyst Recovery /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Development of Novel Molecular Photoswitches for Their Applications in Photon Energy Storage and Catalyst Recovery /Qianfeng Qiu.
Author:	Qiu, Qianfeng,
Description:	1 electronic resource (209 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
Notes:	Advisors: Han, Grace G. D. Committee members: Schmidt-Rohr, Klaus; Aprahamian, Ivan.
Contained By:	Dissertations Abstracts International86-03B.
Subject:	Chemistry.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31327904
ISBN:	9798384046554

Development of Novel Molecular Photoswitches for Their Applications in Photon Energy Storage and Catalyst Recovery /
Qiu, Qianfeng,

Development of Novel Molecular Photoswitches for Their Applications in Photon Energy Storage and Catalyst Recovery /Qianfeng Qiu. - 1 electronic resource (209 pages)

Source: Dissertations Abstracts International, Volume: 86-03, Section: B.

Molecular photoswitches are molecules that undergo reversible isomerization upon exposure to different wavelengths of light. Isomerization induces changes in the molecular structures and configurations, resulting in significant variations in physical and chemical properties, including polarity, absorption, energy state, phase, and solubility. Consequently, the materials incorporating novel molecular switches hold promise for a wide range of applications including energy storage, drug delivery, sensing, optical memory, and recovery of high-value chemicals, among others. This thesis focuses on functionalizing two categories of photoswitches: azo derivatives and hydrazones, to meticulously modify their properties for applications in molecular solar thermal energy storage and catalyst recovery. The first part of this thesis aims to develop ideal materials featuring condensed phase isomerization, long energy storage times, reversible visible light activation, large energy storage, and phase transition for solar thermal energy storage. Strategies for functionalizing the photoswitches are developed, and their optical and thermal properties are investigated. Inspired by the solid-liquid phase transition of photoswitches, which indicates significant variation in the polarity and interactions of molecules upon light absorption, I explore the optical control over the solubility of photoswitches in organic solvents. The second part of my thesis focuses on the integration of photoswitches in catalyst structures to adjust their solubility in solvents and facilitate their recovery after catalysis. This approach enables the reversible dissolution and precipitation of the catalysts upon light stimulation, which allows us to harness the high activity of homogenized catalysts and the easy recovery of precipitated catalysts. This thesis aims to provide a comprehensive view of molecular photoswitches' properties in solution and solid state, as well as their applications in various areas of research.

English

ISBN: 9798384046554Subjects--Topical Terms:

188628
Chemistry.
Subjects--Index Terms:

Catalyst recovery

Development of Novel Molecular Photoswitches for Their Applications in Photon Energy Storage and Catalyst Recovery /
LDR:03546nmm a22004453i 4500 001 676334
005 20250420214344.5
006 m o d
007 cr|nu||||||||
008 250901s2024 miu||||||m |||||||eng d
020 $a 9798384046554
035 $a (MiAaPQD)AAI31327904
035 $a AAI31327904
040 $a MiAaPQD $b eng $c MiAaPQD $e rda
100 1 $a Qiu, Qianfeng, $e author. $0 (orcid)0000-0002-4400-2142 $3 990113
245 1 0 $a Development of Novel Molecular Photoswitches for Their Applications in Photon Energy Storage and Catalyst Recovery / $c Qianfeng Qiu.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2024
300 $a 1 electronic resource (209 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
500 $a Advisors: Han, Grace G. D. Committee members: Schmidt-Rohr, Klaus; Aprahamian, Ivan.
502 $b Ph.D. $c Brandeis University $d 2024.
520 $a Molecular photoswitches are molecules that undergo reversible isomerization upon exposure to different wavelengths of light. Isomerization induces changes in the molecular structures and configurations, resulting in significant variations in physical and chemical properties, including polarity, absorption, energy state, phase, and solubility. Consequently, the materials incorporating novel molecular switches hold promise for a wide range of applications including energy storage, drug delivery, sensing, optical memory, and recovery of high-value chemicals, among others. This thesis focuses on functionalizing two categories of photoswitches: azo derivatives and hydrazones, to meticulously modify their properties for applications in molecular solar thermal energy storage and catalyst recovery. The first part of this thesis aims to develop ideal materials featuring condensed phase isomerization, long energy storage times, reversible visible light activation, large energy storage, and phase transition for solar thermal energy storage. Strategies for functionalizing the photoswitches are developed, and their optical and thermal properties are investigated. Inspired by the solid-liquid phase transition of photoswitches, which indicates significant variation in the polarity and interactions of molecules upon light absorption, I explore the optical control over the solubility of photoswitches in organic solvents. The second part of my thesis focuses on the integration of photoswitches in catalyst structures to adjust their solubility in solvents and facilitate their recovery after catalysis. This approach enables the reversible dissolution and precipitation of the catalysts upon light stimulation, which allows us to harness the high activity of homogenized catalysts and the easy recovery of precipitated catalysts. This thesis aims to provide a comprehensive view of molecular photoswitches' properties in solution and solid state, as well as their applications in various areas of research.
546 $a English
590 $a School code: 0021
650 4 $a Chemistry. $3 188628
650 4 $a Physical chemistry. $3 708580
650 4 $a Alternative energy. $3 857402
650 4 $a Analytical chemistry. $3 708695
653 $a Catalyst recovery
653 $a Photoswitches
653 $a Solar thermal energy storage
653 $a Organic solvents
653 $a Isomerization
690 $a 0485
690 $a 0486
690 $a 0363
690 $a 0494
710 2 $a Brandeis University. $b Chemistry. $e degree granting institution. $3 990114
720 1 $a Han, Grace G. D. $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 86-03B.
790 $a 0021
791 $a Ph.D.
792 $a 2024
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31327904