D-π-A type planar chiral TADF materials for efficient circularly polarized electroluminescence
Planar chiral organic fluorescent materials that exhibit high chiral stability, high efficiency and circularly polarized luminescence (CPL) currently remain an unresolved issue despite their promising applications in optical encryption and 3D-display. Herein, a pair of new donor-chiral π-acceptor (D...
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| Veröffentlicht in: | Materials horizons 2021-11, Vol.8 (12), p.3417-3423 |
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| creator | Zhang, Da-Wei Teng, Jin-Ming Wang, Yin-Feng Han, Xiao-Ni Li, Meng Chen, Chuan-Feng |
| description | Planar chiral organic fluorescent materials that exhibit high chiral stability, high efficiency and circularly polarized luminescence (CPL) currently remain an unresolved issue despite their promising applications in optical encryption and 3D-display. Herein, a pair of new donor-chiral π-acceptor (D-π*-A) type planar chiral thermally activated delayed fluorescence (TADF) enantiomers, namely
R
/
S
-
PXZ-PT
, are developed. Such a D-π*-A type structure completely suppresses the racemisation of the planar chirality, making it possible to prepare circularly polarized organic light-emitting diodes (CP-OLEDs) by vacuum deposition processing. Moreover, this design perfectly integrates the chiral unit into the luminescent unit to achieve intense CPL activity with luminescence asymmetry factors (
g
lum
) of ±1.9 × 10
−3
. Notably, the enantiomer-based devices exhibit a yellow coloured emission with a maximum external quantum efficiency (EQE) of 20.1%, and mirror-image circularly polarized electroluminescence signals with electroluminescence dissymmetry factors (
g
EL
) of +1.5 × 10
−3
/−1.3 × 10
−3
. This work not only enriches the diversity of chiral TADF molecular design, but also provides a new perspective for the development of highly-efficient CP-OLEDs with stable planar chiral TADF materials.
D-π*-A type planar chiral TADF emitters were synthesized and the enantiomer-based CP-OLEDs exhibited EQE
max
of up to 20.1%. |
| doi_str_mv | 10.1039/d1mh01404h |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_2586456226</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2604134205</sourcerecordid><originalsourceid>FETCH-LOGICAL-c314t-33504a9877076b600ff4b516c26b275e929db57585b1cb3a48f71315aaf35d423</originalsourceid><addsrcrecordid>eNpdkU1LAzEQhoMoWGov3oWAFxFW8727x9JaK1S81HPIpglNyX6Y7B7qyX_oXzJaqeBp5vDM8M4zAFxidIcRLe83uN4izBDbnoARQRxngnJ-euxZfg4mMe4QQpgyjgo0AnKefX5kU9jvOwM7rxoVoN66oDxcT-cLWKveBKd8hLYN0FjrtDNND7ULevAq-D3s2lTdu9lA443uQ-uH2jUmatNocwHObJo2k986Bq-Lh_Vsma1eHp9m01WmKWZ9RilHTJVFnqNcVAIha1nFsdBEVCTnpiTlpuI5L3iFdUUVK2yOKeZKWco3jNAxuDns7UL7NpjYy9qlBD5dZNohSsILwbggRCT0-h-6a4fQpHSSCMSSmuQrUbcHSoc2xmCs7IKrVdhLjOS3bjnHz8sf3csEXx3gEPWR-3sH_QJoNHr5</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2604134205</pqid></control><display><type>article</type><title>D-π-A type planar chiral TADF materials for efficient circularly polarized electroluminescence</title><source>Royal Society Of Chemistry Journals 2008-</source><source>Alma/SFX Local Collection</source><creator>Zhang, Da-Wei ; Teng, Jin-Ming ; Wang, Yin-Feng ; Han, Xiao-Ni ; Li, Meng ; Chen, Chuan-Feng</creator><creatorcontrib>Zhang, Da-Wei ; Teng, Jin-Ming ; Wang, Yin-Feng ; Han, Xiao-Ni ; Li, Meng ; Chen, Chuan-Feng</creatorcontrib><description>Planar chiral organic fluorescent materials that exhibit high chiral stability, high efficiency and circularly polarized luminescence (CPL) currently remain an unresolved issue despite their promising applications in optical encryption and 3D-display. Herein, a pair of new donor-chiral π-acceptor (D-π*-A) type planar chiral thermally activated delayed fluorescence (TADF) enantiomers, namely
R
/
S
-
PXZ-PT
, are developed. Such a D-π*-A type structure completely suppresses the racemisation of the planar chirality, making it possible to prepare circularly polarized organic light-emitting diodes (CP-OLEDs) by vacuum deposition processing. Moreover, this design perfectly integrates the chiral unit into the luminescent unit to achieve intense CPL activity with luminescence asymmetry factors (
g
lum
) of ±1.9 × 10
−3
. Notably, the enantiomer-based devices exhibit a yellow coloured emission with a maximum external quantum efficiency (EQE) of 20.1%, and mirror-image circularly polarized electroluminescence signals with electroluminescence dissymmetry factors (
g
EL
) of +1.5 × 10
−3
/−1.3 × 10
−3
. This work not only enriches the diversity of chiral TADF molecular design, but also provides a new perspective for the development of highly-efficient CP-OLEDs with stable planar chiral TADF materials.
D-π*-A type planar chiral TADF emitters were synthesized and the enantiomer-based CP-OLEDs exhibited EQE
max
of up to 20.1%.</description><identifier>ISSN: 2051-6347</identifier><identifier>EISSN: 2051-6355</identifier><identifier>DOI: 10.1039/d1mh01404h</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Chirality ; Circular polarization ; Electroluminescence ; Enantiomers ; Fluorescence ; Luminescence ; Organic light emitting diodes ; Quantum efficiency ; Racemization ; Vacuum deposition</subject><ispartof>Materials horizons, 2021-11, Vol.8 (12), p.3417-3423</ispartof><rights>Copyright Royal Society of Chemistry 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c314t-33504a9877076b600ff4b516c26b275e929db57585b1cb3a48f71315aaf35d423</citedby><cites>FETCH-LOGICAL-c314t-33504a9877076b600ff4b516c26b275e929db57585b1cb3a48f71315aaf35d423</cites><orcidid>0000-0003-4835-9293 ; 0000-0002-4347-1406</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Zhang, Da-Wei</creatorcontrib><creatorcontrib>Teng, Jin-Ming</creatorcontrib><creatorcontrib>Wang, Yin-Feng</creatorcontrib><creatorcontrib>Han, Xiao-Ni</creatorcontrib><creatorcontrib>Li, Meng</creatorcontrib><creatorcontrib>Chen, Chuan-Feng</creatorcontrib><title>D-π-A type planar chiral TADF materials for efficient circularly polarized electroluminescence</title><title>Materials horizons</title><description>Planar chiral organic fluorescent materials that exhibit high chiral stability, high efficiency and circularly polarized luminescence (CPL) currently remain an unresolved issue despite their promising applications in optical encryption and 3D-display. Herein, a pair of new donor-chiral π-acceptor (D-π*-A) type planar chiral thermally activated delayed fluorescence (TADF) enantiomers, namely
R
/
S
-
PXZ-PT
, are developed. Such a D-π*-A type structure completely suppresses the racemisation of the planar chirality, making it possible to prepare circularly polarized organic light-emitting diodes (CP-OLEDs) by vacuum deposition processing. Moreover, this design perfectly integrates the chiral unit into the luminescent unit to achieve intense CPL activity with luminescence asymmetry factors (
g
lum
) of ±1.9 × 10
−3
. Notably, the enantiomer-based devices exhibit a yellow coloured emission with a maximum external quantum efficiency (EQE) of 20.1%, and mirror-image circularly polarized electroluminescence signals with electroluminescence dissymmetry factors (
g
EL
) of +1.5 × 10
−3
/−1.3 × 10
−3
. This work not only enriches the diversity of chiral TADF molecular design, but also provides a new perspective for the development of highly-efficient CP-OLEDs with stable planar chiral TADF materials.
D-π*-A type planar chiral TADF emitters were synthesized and the enantiomer-based CP-OLEDs exhibited EQE
max
of up to 20.1%.</description><subject>Chirality</subject><subject>Circular polarization</subject><subject>Electroluminescence</subject><subject>Enantiomers</subject><subject>Fluorescence</subject><subject>Luminescence</subject><subject>Organic light emitting diodes</subject><subject>Quantum efficiency</subject><subject>Racemization</subject><subject>Vacuum deposition</subject><issn>2051-6347</issn><issn>2051-6355</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNpdkU1LAzEQhoMoWGov3oWAFxFW8727x9JaK1S81HPIpglNyX6Y7B7qyX_oXzJaqeBp5vDM8M4zAFxidIcRLe83uN4izBDbnoARQRxngnJ-euxZfg4mMe4QQpgyjgo0AnKefX5kU9jvOwM7rxoVoN66oDxcT-cLWKveBKd8hLYN0FjrtDNND7ULevAq-D3s2lTdu9lA443uQ-uH2jUmatNocwHObJo2k986Bq-Lh_Vsma1eHp9m01WmKWZ9RilHTJVFnqNcVAIha1nFsdBEVCTnpiTlpuI5L3iFdUUVK2yOKeZKWco3jNAxuDns7UL7NpjYy9qlBD5dZNohSsILwbggRCT0-h-6a4fQpHSSCMSSmuQrUbcHSoc2xmCs7IKrVdhLjOS3bjnHz8sf3csEXx3gEPWR-3sH_QJoNHr5</recordid><startdate>20211129</startdate><enddate>20211129</enddate><creator>Zhang, Da-Wei</creator><creator>Teng, Jin-Ming</creator><creator>Wang, Yin-Feng</creator><creator>Han, Xiao-Ni</creator><creator>Li, Meng</creator><creator>Chen, Chuan-Feng</creator><general>Royal Society of Chemistry</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0003-4835-9293</orcidid><orcidid>https://orcid.org/0000-0002-4347-1406</orcidid></search><sort><creationdate>20211129</creationdate><title>D-π-A type planar chiral TADF materials for efficient circularly polarized electroluminescence</title><author>Zhang, Da-Wei ; Teng, Jin-Ming ; Wang, Yin-Feng ; Han, Xiao-Ni ; Li, Meng ; Chen, Chuan-Feng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c314t-33504a9877076b600ff4b516c26b275e929db57585b1cb3a48f71315aaf35d423</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Chirality</topic><topic>Circular polarization</topic><topic>Electroluminescence</topic><topic>Enantiomers</topic><topic>Fluorescence</topic><topic>Luminescence</topic><topic>Organic light emitting diodes</topic><topic>Quantum efficiency</topic><topic>Racemization</topic><topic>Vacuum deposition</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Da-Wei</creatorcontrib><creatorcontrib>Teng, Jin-Ming</creatorcontrib><creatorcontrib>Wang, Yin-Feng</creatorcontrib><creatorcontrib>Han, Xiao-Ni</creatorcontrib><creatorcontrib>Li, Meng</creatorcontrib><creatorcontrib>Chen, Chuan-Feng</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Materials horizons</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Da-Wei</au><au>Teng, Jin-Ming</au><au>Wang, Yin-Feng</au><au>Han, Xiao-Ni</au><au>Li, Meng</au><au>Chen, Chuan-Feng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>D-π-A type planar chiral TADF materials for efficient circularly polarized electroluminescence</atitle><jtitle>Materials horizons</jtitle><date>2021-11-29</date><risdate>2021</risdate><volume>8</volume><issue>12</issue><spage>3417</spage><epage>3423</epage><pages>3417-3423</pages><issn>2051-6347</issn><eissn>2051-6355</eissn><abstract>Planar chiral organic fluorescent materials that exhibit high chiral stability, high efficiency and circularly polarized luminescence (CPL) currently remain an unresolved issue despite their promising applications in optical encryption and 3D-display. Herein, a pair of new donor-chiral π-acceptor (D-π*-A) type planar chiral thermally activated delayed fluorescence (TADF) enantiomers, namely
R
/
S
-
PXZ-PT
, are developed. Such a D-π*-A type structure completely suppresses the racemisation of the planar chirality, making it possible to prepare circularly polarized organic light-emitting diodes (CP-OLEDs) by vacuum deposition processing. Moreover, this design perfectly integrates the chiral unit into the luminescent unit to achieve intense CPL activity with luminescence asymmetry factors (
g
lum
) of ±1.9 × 10
−3
. Notably, the enantiomer-based devices exhibit a yellow coloured emission with a maximum external quantum efficiency (EQE) of 20.1%, and mirror-image circularly polarized electroluminescence signals with electroluminescence dissymmetry factors (
g
EL
) of +1.5 × 10
−3
/−1.3 × 10
−3
. This work not only enriches the diversity of chiral TADF molecular design, but also provides a new perspective for the development of highly-efficient CP-OLEDs with stable planar chiral TADF materials.
D-π*-A type planar chiral TADF emitters were synthesized and the enantiomer-based CP-OLEDs exhibited EQE
max
of up to 20.1%.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/d1mh01404h</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0003-4835-9293</orcidid><orcidid>https://orcid.org/0000-0002-4347-1406</orcidid></addata></record> |
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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Chirality Circular polarization Electroluminescence Enantiomers Fluorescence Luminescence Organic light emitting diodes Quantum efficiency Racemization Vacuum deposition |
| title | D-π-A type planar chiral TADF materials for efficient circularly polarized electroluminescence |
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