Electronic relaxation dynamics of PCDA-PDA studied by transient absorption spectroscopy
DC Field | Value | Language |
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dc.contributor.author | Joung, Joonyoung F. | - |
dc.contributor.author | Baek, Junwoo | - |
dc.contributor.author | Kim, Youngseo | - |
dc.contributor.author | Lee, Songyi | - |
dc.contributor.author | Kim, Myung Hwa | - |
dc.contributor.author | Yoon, Juyoung | - |
dc.contributor.author | Park, Sungnam | - |
dc.date.accessioned | 2021-09-03T20:06:34Z | - |
dc.date.available | 2021-09-03T20:06:34Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2016-09-07 | - |
dc.identifier.issn | 1463-9076 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/87538 | - |
dc.description.abstract | Photo-curable polymers originating from 10,12-pentacosadiynoic acid (PCDA-PDA) are commonly used polydiacetylenes (PDAs). PCDA-PDA exhibits thermochromic properties undergoing a unique colorimetric transition from blue to red as the temperature is increased from low to high. In this work, we have carefully studied the temperature-dependent optical properties of PCDA-PDA by using UV-visible absorption, FTIR, Raman, and transient absorption (TA) spectroscopy in combination with quantum chemical calculations. Temperature-dependent UV-visible absorption spectra indicate that PCDA-PDA exhibits reversible thermochromic properties up to 60 degrees C and its thermochromic properties become irreversible above 60 degrees C. Such distinct thermochromic properties are also manifested in TA signals so that the electronically excited PCDA-PDA relaxes to the ground state via an intermediate state at 20 degrees C (blue form) but it relaxes directly back to the ground state at 80 degrees C (red form). The electronic relaxation dynamics of PCDA-PDA are comprehensively analyzed based on different kinetic models by using the global fitting analysis method. The intermediate state in the blue form of PCDA-PDA is clearly found to be responsible for fluorescence quenching. FTIR and Raman spectroscopy and quantum chemical calculations confirm that the H-bonds between the carboxylic acid groups in PCDA-PDA are broken at high temperatures leading to an irreversible structural change of PCDA-PDA. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | POLYDIACETYLENE VESICLES | - |
dc.subject | CONJUGATED POLYMERS | - |
dc.subject | OPTICAL-PROPERTIES | - |
dc.subject | POLYMERIZATION | - |
dc.subject | MULTILAYERS | - |
dc.subject | TEMPERATURE | - |
dc.subject | TRANSITIONS | - |
dc.subject | FILMS | - |
dc.subject | OXIDE | - |
dc.subject | PH | - |
dc.title | Electronic relaxation dynamics of PCDA-PDA studied by transient absorption spectroscopy | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Sungnam | - |
dc.identifier.doi | 10.1039/c6cp03858a | - |
dc.identifier.scopusid | 2-s2.0-84983427592 | - |
dc.identifier.wosid | 000382109300036 | - |
dc.identifier.bibliographicCitation | PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.18, no.33, pp.23096 - 23104 | - |
dc.relation.isPartOf | PHYSICAL CHEMISTRY CHEMICAL PHYSICS | - |
dc.citation.title | PHYSICAL CHEMISTRY CHEMICAL PHYSICS | - |
dc.citation.volume | 18 | - |
dc.citation.number | 33 | - |
dc.citation.startPage | 23096 | - |
dc.citation.endPage | 23104 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Physics, Atomic, Molecular & Chemical | - |
dc.subject.keywordPlus | POLYDIACETYLENE VESICLES | - |
dc.subject.keywordPlus | CONJUGATED POLYMERS | - |
dc.subject.keywordPlus | OPTICAL-PROPERTIES | - |
dc.subject.keywordPlus | POLYMERIZATION | - |
dc.subject.keywordPlus | MULTILAYERS | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | TRANSITIONS | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | PH | - |
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