Long-Lived Room-Temperature Phosphorescence of Arene–Beta-Cyclodextrin–Hydrocarbon Complexes in the Presence of Oxygen
Room-temperature phosphorescence (RTP) of arenes, naphthalene-d8 and phenanthrene, in complexes with β-cyclodextrin (βCD) in the presence of a third component, tert- butylbenzene or p-tert- butyltoluene, providing the appearance of long-lived arene RTP, has been studied. The RTP lifetimes τ ph of na...
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| Veröffentlicht in: | High energy chemistry 2021-05, Vol.55 (3), p.193-202 |
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| creator | Nazarov, V. B. Avakyan, V. G. Alfimov, M. V. |
| description | Room-temperature phosphorescence (RTP) of arenes, naphthalene-d8 and phenanthrene, in complexes with β-cyclodextrin (βCD) in the presence of a third component,
tert-
butylbenzene or
p-tert-
butyltoluene, providing the appearance of long-lived arene RTP, has been studied. The RTP lifetimes τ
ph
of naphthalene-d8 in the naphthalene-d8–βCD–
tert-
butylbenzene and naphthalene-d8–βCD–
p-tert-
butyltoluene complexes in the presence of oxygen are 14 and 4.8 s, respectively, and increase up to 16.4 and 6.6 s after oxygen removal. The rate constants of the phosphorescence quenching in these complexes are 34.4 and 76 L mol
−1
s
−1
, respectively, indicating a high degree of naphthalene-d8 isolation from oxygen in the supramolecular system based on βCD. The highest value of τ
ph
for phenanthrene in the phenanthrene–βCD–
tert-
butylbenzene complex in the presence of oxygen is 2.4 s. The RTP decay in the presence of oxygen is always the superposition of two exponents, which is the general property of such three-component complexes, and indicates the presence of two types of phosphorescing complexes. The proposed structures of the complexes have been calculated by the quantum-chemistry method. The mechanism of the arene RTP quenching by oxygen is discussed with the use of the calculated structures of the complexes. |
| doi_str_mv | 10.1134/S0018143921020090 |
| format | Article |
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tert-
butylbenzene or
p-tert-
butyltoluene, providing the appearance of long-lived arene RTP, has been studied. The RTP lifetimes τ
ph
of naphthalene-d8 in the naphthalene-d8–βCD–
tert-
butylbenzene and naphthalene-d8–βCD–
p-tert-
butyltoluene complexes in the presence of oxygen are 14 and 4.8 s, respectively, and increase up to 16.4 and 6.6 s after oxygen removal. The rate constants of the phosphorescence quenching in these complexes are 34.4 and 76 L mol
−1
s
−1
, respectively, indicating a high degree of naphthalene-d8 isolation from oxygen in the supramolecular system based on βCD. The highest value of τ
ph
for phenanthrene in the phenanthrene–βCD–
tert-
butylbenzene complex in the presence of oxygen is 2.4 s. The RTP decay in the presence of oxygen is always the superposition of two exponents, which is the general property of such three-component complexes, and indicates the presence of two types of phosphorescing complexes. The proposed structures of the complexes have been calculated by the quantum-chemistry method. The mechanism of the arene RTP quenching by oxygen is discussed with the use of the calculated structures of the complexes.</description><identifier>ISSN: 0018-1439</identifier><identifier>EISSN: 1608-3148</identifier><identifier>DOI: 10.1134/S0018143921020090</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Aromatic compounds ; Chemistry ; Chemistry and Materials Science ; Cyclodextrins ; Mathematical analysis ; Naphthalene ; Oxygen ; Phenanthrene ; Phosphorescence ; Photonics ; Physical Chemistry ; Quantum chemistry ; Quenching ; Rate constants ; Room temperature</subject><ispartof>High energy chemistry, 2021-05, Vol.55 (3), p.193-202</ispartof><rights>Pleiades Publishing, Ltd. 2021. ISSN 0018-1439, High Energy Chemistry, 2021, Vol. 55, No. 3, pp. 193–202. © Pleiades Publishing, Ltd., 2021. Russian Text © The Author(s), 2021, published in Khimiya Vysokikh Energii, 2021, Vol. 55, No. 3, pp. 195–205.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-9de3f435234f5068abf655befade052c0b0b2706ad939d5ce153458cb9c541073</citedby><cites>FETCH-LOGICAL-c316t-9de3f435234f5068abf655befade052c0b0b2706ad939d5ce153458cb9c541073</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S0018143921020090$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S0018143921020090$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids></links><search><creatorcontrib>Nazarov, V. B.</creatorcontrib><creatorcontrib>Avakyan, V. G.</creatorcontrib><creatorcontrib>Alfimov, M. V.</creatorcontrib><title>Long-Lived Room-Temperature Phosphorescence of Arene–Beta-Cyclodextrin–Hydrocarbon Complexes in the Presence of Oxygen</title><title>High energy chemistry</title><addtitle>High Energy Chem</addtitle><description>Room-temperature phosphorescence (RTP) of arenes, naphthalene-d8 and phenanthrene, in complexes with β-cyclodextrin (βCD) in the presence of a third component,
tert-
butylbenzene or
p-tert-
butyltoluene, providing the appearance of long-lived arene RTP, has been studied. The RTP lifetimes τ
ph
of naphthalene-d8 in the naphthalene-d8–βCD–
tert-
butylbenzene and naphthalene-d8–βCD–
p-tert-
butyltoluene complexes in the presence of oxygen are 14 and 4.8 s, respectively, and increase up to 16.4 and 6.6 s after oxygen removal. The rate constants of the phosphorescence quenching in these complexes are 34.4 and 76 L mol
−1
s
−1
, respectively, indicating a high degree of naphthalene-d8 isolation from oxygen in the supramolecular system based on βCD. The highest value of τ
ph
for phenanthrene in the phenanthrene–βCD–
tert-
butylbenzene complex in the presence of oxygen is 2.4 s. The RTP decay in the presence of oxygen is always the superposition of two exponents, which is the general property of such three-component complexes, and indicates the presence of two types of phosphorescing complexes. The proposed structures of the complexes have been calculated by the quantum-chemistry method. The mechanism of the arene RTP quenching by oxygen is discussed with the use of the calculated structures of the complexes.</description><subject>Aromatic compounds</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Cyclodextrins</subject><subject>Mathematical analysis</subject><subject>Naphthalene</subject><subject>Oxygen</subject><subject>Phenanthrene</subject><subject>Phosphorescence</subject><subject>Photonics</subject><subject>Physical Chemistry</subject><subject>Quantum chemistry</subject><subject>Quenching</subject><subject>Rate constants</subject><subject>Room temperature</subject><issn>0018-1439</issn><issn>1608-3148</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp1kN9KwzAUxoMoOKcP4F3B6-hJ0nTt5RzqhMJE53VJ09OtY01q0snqle_gG_okdkzxQrw68P35HfgIOWdwyZgIr54AWMxCkXAGHCCBAzJgEcRUsDA-JIOdTXf-MTnxfgUAEgQMyFtqzYKm1SsWwaO1NZ1j3aBT7cZh8LC0vllah16j0RjYMhg7NPj5_nGNraKTTq9tgdvWVabXpl3hrFYutyaY2LpZ4xZ9UJmgXfasnvIDmW27BZpTclSqtcez7zskz7c388mUprO7-8k4pVqwqKVJgaIMheQiLCVEscrLSMocS1UgSK4hh5yPIFJFIpJCamRShDLWeaJlyGAkhuRiz22cfdmgb7OV3TjTv8y4FJEUPBS8T7F9SjvrvcMya1xVK9dlDLLdxNmfifsO33d8nzULdL_k_0tfOTqAag</recordid><startdate>20210501</startdate><enddate>20210501</enddate><creator>Nazarov, V. B.</creator><creator>Avakyan, V. G.</creator><creator>Alfimov, M. V.</creator><general>Pleiades Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20210501</creationdate><title>Long-Lived Room-Temperature Phosphorescence of Arene–Beta-Cyclodextrin–Hydrocarbon Complexes in the Presence of Oxygen</title><author>Nazarov, V. B. ; Avakyan, V. G. ; Alfimov, M. V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-9de3f435234f5068abf655befade052c0b0b2706ad939d5ce153458cb9c541073</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Aromatic compounds</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Cyclodextrins</topic><topic>Mathematical analysis</topic><topic>Naphthalene</topic><topic>Oxygen</topic><topic>Phenanthrene</topic><topic>Phosphorescence</topic><topic>Photonics</topic><topic>Physical Chemistry</topic><topic>Quantum chemistry</topic><topic>Quenching</topic><topic>Rate constants</topic><topic>Room temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nazarov, V. B.</creatorcontrib><creatorcontrib>Avakyan, V. G.</creatorcontrib><creatorcontrib>Alfimov, M. V.</creatorcontrib><collection>CrossRef</collection><jtitle>High energy chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nazarov, V. B.</au><au>Avakyan, V. G.</au><au>Alfimov, M. V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Long-Lived Room-Temperature Phosphorescence of Arene–Beta-Cyclodextrin–Hydrocarbon Complexes in the Presence of Oxygen</atitle><jtitle>High energy chemistry</jtitle><stitle>High Energy Chem</stitle><date>2021-05-01</date><risdate>2021</risdate><volume>55</volume><issue>3</issue><spage>193</spage><epage>202</epage><pages>193-202</pages><issn>0018-1439</issn><eissn>1608-3148</eissn><abstract>Room-temperature phosphorescence (RTP) of arenes, naphthalene-d8 and phenanthrene, in complexes with β-cyclodextrin (βCD) in the presence of a third component,
tert-
butylbenzene or
p-tert-
butyltoluene, providing the appearance of long-lived arene RTP, has been studied. The RTP lifetimes τ
ph
of naphthalene-d8 in the naphthalene-d8–βCD–
tert-
butylbenzene and naphthalene-d8–βCD–
p-tert-
butyltoluene complexes in the presence of oxygen are 14 and 4.8 s, respectively, and increase up to 16.4 and 6.6 s after oxygen removal. The rate constants of the phosphorescence quenching in these complexes are 34.4 and 76 L mol
−1
s
−1
, respectively, indicating a high degree of naphthalene-d8 isolation from oxygen in the supramolecular system based on βCD. The highest value of τ
ph
for phenanthrene in the phenanthrene–βCD–
tert-
butylbenzene complex in the presence of oxygen is 2.4 s. The RTP decay in the presence of oxygen is always the superposition of two exponents, which is the general property of such three-component complexes, and indicates the presence of two types of phosphorescing complexes. The proposed structures of the complexes have been calculated by the quantum-chemistry method. The mechanism of the arene RTP quenching by oxygen is discussed with the use of the calculated structures of the complexes.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S0018143921020090</doi><tpages>10</tpages></addata></record> |
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| subjects | Aromatic compounds Chemistry Chemistry and Materials Science Cyclodextrins Mathematical analysis Naphthalene Oxygen Phenanthrene Phosphorescence Photonics Physical Chemistry Quantum chemistry Quenching Rate constants Room temperature |
| title | Long-Lived Room-Temperature Phosphorescence of Arene–Beta-Cyclodextrin–Hydrocarbon Complexes in the Presence of Oxygen |
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