Transient Circular Dichroism Measurement of the Excited Triplet State of Pristine Hexahelicene in Solution at Room Temperature
Transient circular dichroism (TR-CD) spectra of (P)- and (M)-hexahelicenes (HHs) in the excited triplet state, (P)- and (M)-3HH*, and their growth and decay behaviors in the µs time domains were recorded for the first time in toluene at room temperature, using an improved Kliger’s method. The TR-CD...
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| Veröffentlicht in: | Chemistry letters 2019-04, Vol.48 (4), p.357-360 |
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| container_title | Chemistry letters |
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| creator | Kuronuma, Makoto Sato, Takehito Araki, Yasuyuki Mori, Tadashi Sakamoto, Seiji Inoue, Yoshihisa Ito, Osamu Wada, Takehiko |
| description | Transient circular dichroism (TR-CD) spectra of (P)- and (M)-hexahelicenes (HHs) in the excited triplet state, (P)- and (M)-3HH*, and their growth and decay behaviors in the µs time domains were recorded for the first time in toluene at room temperature, using an improved Kliger’s method. The TR-CD spectra of (P)- and (M)-3HH* obtained were mirror-imaged, exhibiting strong positive and negative Cotton effect, respectively, of |Δε| = 55 M−1 cm−1 for the lowest-energy band at 660 nm and additional sign-alternating less intense peaks in the higher energy region, the major features of which were well reproduced by the TD-DFT calculations at the UCAM-B3LYP/6-31G(d,p) level. |
| doi_str_mv | 10.1246/cl.190012 |
| format | Article |
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The TR-CD spectra of (P)- and (M)-3HH* obtained were mirror-imaged, exhibiting strong positive and negative Cotton effect, respectively, of |Δε| = 55 M−1 cm−1 for the lowest-energy band at 660 nm and additional sign-alternating less intense peaks in the higher energy region, the major features of which were well reproduced by the TD-DFT calculations at the UCAM-B3LYP/6-31G(d,p) level.</description><identifier>ISSN: 0366-7022</identifier><identifier>EISSN: 1348-0715</identifier><identifier>DOI: 10.1246/cl.190012</identifier><language>eng</language><publisher>Tokyo: The Chemical Society of Japan</publisher><subject>Atomic energy levels ; Cotton ; Dichroism ; Domains ; Toluene</subject><ispartof>Chemistry letters, 2019-04, Vol.48 (4), p.357-360</ispartof><rights>The Chemical Society of Japan</rights><rights>Copyright Chemical Society of Japan 2019</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c504t-af50de8dfe6360f04f3ea7c58ab402649cdf7de3c62b1ae79aae4a6445af068c3</citedby><cites>FETCH-LOGICAL-c504t-af50de8dfe6360f04f3ea7c58ab402649cdf7de3c62b1ae79aae4a6445af068c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27915,27916</link.rule.ids></links><search><creatorcontrib>Kuronuma, Makoto</creatorcontrib><creatorcontrib>Sato, Takehito</creatorcontrib><creatorcontrib>Araki, Yasuyuki</creatorcontrib><creatorcontrib>Mori, Tadashi</creatorcontrib><creatorcontrib>Sakamoto, Seiji</creatorcontrib><creatorcontrib>Inoue, Yoshihisa</creatorcontrib><creatorcontrib>Ito, Osamu</creatorcontrib><creatorcontrib>Wada, Takehiko</creatorcontrib><title>Transient Circular Dichroism Measurement of the Excited Triplet State of Pristine Hexahelicene in Solution at Room Temperature</title><title>Chemistry letters</title><description>Transient circular dichroism (TR-CD) spectra of (P)- and (M)-hexahelicenes (HHs) in the excited triplet state, (P)- and (M)-3HH*, and their growth and decay behaviors in the µs time domains were recorded for the first time in toluene at room temperature, using an improved Kliger’s method. The TR-CD spectra of (P)- and (M)-3HH* obtained were mirror-imaged, exhibiting strong positive and negative Cotton effect, respectively, of |Δε| = 55 M−1 cm−1 for the lowest-energy band at 660 nm and additional sign-alternating less intense peaks in the higher energy region, the major features of which were well reproduced by the TD-DFT calculations at the UCAM-B3LYP/6-31G(d,p) level.</description><subject>Atomic energy levels</subject><subject>Cotton</subject><subject>Dichroism</subject><subject>Domains</subject><subject>Toluene</subject><issn>0366-7022</issn><issn>1348-0715</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNplkE1Lw0AQhhdRsH4c_AcLnjxE9yub9Ci1foCiaD2HcTNLtyTZuLuB9uJvN6UFD56G4X3mGXgJueDsmgulb0xzzaeMcXFAJlyqMmMFzw_JhEmts4IJcUxOYlwxxsqpFBPyswjQRYddojMXzNBAoHfOLIN3saUvCHEI2G5jb2laIp2vjUtY00VwfYOJfiRIuA3fgovJdUgfcQ1LbJzBcXEd_fDNkJzvKCT67n1LF9j2GCCN5jNyZKGJeL6fp-Tzfr6YPWbPrw9Ps9vnzORMpQxszmosa4taamaZshKhMHkJX4oJraamtkWN0mjxxQGLKQAq0ErlYJkujTwllztvH_z3gDFVKz-EbnxZCaG4LJTkYqSudpQJPsaAtuqDayFsKs6qbb2VaapdvSOr9-wSW2dGkzcO02YFPXR_9v-Hvyhbgkk</recordid><startdate>20190405</startdate><enddate>20190405</enddate><creator>Kuronuma, Makoto</creator><creator>Sato, Takehito</creator><creator>Araki, Yasuyuki</creator><creator>Mori, Tadashi</creator><creator>Sakamoto, Seiji</creator><creator>Inoue, Yoshihisa</creator><creator>Ito, Osamu</creator><creator>Wada, Takehiko</creator><general>The Chemical Society of Japan</general><general>Chemical Society of Japan</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20190405</creationdate><title>Transient Circular Dichroism Measurement of the Excited Triplet State of Pristine Hexahelicene in Solution at Room Temperature</title><author>Kuronuma, Makoto ; Sato, Takehito ; Araki, Yasuyuki ; Mori, Tadashi ; Sakamoto, Seiji ; Inoue, Yoshihisa ; Ito, Osamu ; Wada, Takehiko</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c504t-af50de8dfe6360f04f3ea7c58ab402649cdf7de3c62b1ae79aae4a6445af068c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Atomic energy levels</topic><topic>Cotton</topic><topic>Dichroism</topic><topic>Domains</topic><topic>Toluene</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kuronuma, Makoto</creatorcontrib><creatorcontrib>Sato, Takehito</creatorcontrib><creatorcontrib>Araki, Yasuyuki</creatorcontrib><creatorcontrib>Mori, Tadashi</creatorcontrib><creatorcontrib>Sakamoto, Seiji</creatorcontrib><creatorcontrib>Inoue, Yoshihisa</creatorcontrib><creatorcontrib>Ito, Osamu</creatorcontrib><creatorcontrib>Wada, Takehiko</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Chemistry letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kuronuma, Makoto</au><au>Sato, Takehito</au><au>Araki, Yasuyuki</au><au>Mori, Tadashi</au><au>Sakamoto, Seiji</au><au>Inoue, Yoshihisa</au><au>Ito, Osamu</au><au>Wada, Takehiko</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Transient Circular Dichroism Measurement of the Excited Triplet State of Pristine Hexahelicene in Solution at Room Temperature</atitle><jtitle>Chemistry letters</jtitle><date>2019-04-05</date><risdate>2019</risdate><volume>48</volume><issue>4</issue><spage>357</spage><epage>360</epage><pages>357-360</pages><issn>0366-7022</issn><eissn>1348-0715</eissn><abstract>Transient circular dichroism (TR-CD) spectra of (P)- and (M)-hexahelicenes (HHs) in the excited triplet state, (P)- and (M)-3HH*, and their growth and decay behaviors in the µs time domains were recorded for the first time in toluene at room temperature, using an improved Kliger’s method. The TR-CD spectra of (P)- and (M)-3HH* obtained were mirror-imaged, exhibiting strong positive and negative Cotton effect, respectively, of |Δε| = 55 M−1 cm−1 for the lowest-energy band at 660 nm and additional sign-alternating less intense peaks in the higher energy region, the major features of which were well reproduced by the TD-DFT calculations at the UCAM-B3LYP/6-31G(d,p) level.</abstract><cop>Tokyo</cop><pub>The Chemical Society of Japan</pub><doi>10.1246/cl.190012</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0366-7022 |
| ispartof | Chemistry letters, 2019-04, Vol.48 (4), p.357-360 |
| issn | 0366-7022 1348-0715 |
| language | eng |
| recordid | cdi_proquest_journals_2241374312 |
| source | Oxford University Press Journals All Titles (1996-Current) |
| subjects | Atomic energy levels Cotton Dichroism Domains Toluene |
| title | Transient Circular Dichroism Measurement of the Excited Triplet State of Pristine Hexahelicene in Solution at Room Temperature |
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