Stimuli responsive aggregation-induced emission of bis(4-((9H-fluoren-9-ylidene)methyl)phenyl)thiophene single crystals

Stimuli responsive aggregation-induced emission of bis(4-((9H-fluoren-9-ylidene)methyl)phenyl)thiophene single crystals Full article

Journal

Materials Chemistry Frontiers
ISSN: 2052-1537

Output data

Year: 2019, Volume: 3, Number: 8, Pages: 1545-1554 Pages count : 10 DOI: 10.1039/c9qm00198k

Authors

Kazantsev Maxim S. ^1,2 , Sonina Alina A. ^1,2 , Koskin Igor P. ^1,2 , Sherin Peter S. ^2,3 , Rybalova Tatyana V. ^1,2 , Benassi Enrico ^2,4 , Mostovich Evgeny A. ^1,2

Affiliations

1	(Данные Web of science) RAS, NN Vorozhtsov Novosibirsk Inst Organ Chem, SB, Lavrentieva 9, Novosibirsk 630090, Russia
2	(Данные Web of science) Novosibirsk State Univ, Pirogova 2, Novosibirsk 630090, Russia
3	(Данные Web of science) Int Tomog Ctr, Inst Skaya 34, Novosibirsk 630090, Russia
4	(Данные Web of science) Lanzhou Inst Chem Phys, Tianshui Middle Rd, Lanzhou 730000, Peoples R China

Aggregation induced emission (AIE) materials are in the spotlight of current materials development due to their unique properties and potential applications in light-emitting devices, bio-imaging and sensors. In this work we synthesised and thoroughly studied a novel luminogen based on bis(4-((9H-fluoren-9-ylidene)methyl)phenyl)thiophene (BFMPT) showing polymorph-dependent AIE. BFMPT crystallises in two polymorphs of different crystal shapes and colours, however both of them are highly-luminescent with the same photoluminescence (PL) quantum yield of 40%. Polymorph I can undergo irreversible phase transition to polymorph II. Deep quantum chemical study of BFMPT revealed that inter- and intramolecular interactions in both polymorphs are very similar and the main contributor to the optical difference between the polymorphs is a variation of BFMPT conformation. The thermal stress was demonstrated to negligibly affect the PL efficiency of BFMPT crystals. Due to high intrinsic torsional freedom and high solid-state PL efficiency, BFMPT could serve as a basis for the molecular design of high performance AIE materials.

Kazantsev M.S. , Sonina A.A. , Koskin I.P. , Sherin P.S. , Rybalova T.V. , Benassi E. , Mostovich E.A.
Stimuli responsive aggregation-induced emission of bis(4-((9H-fluoren-9-ylidene)methyl)phenyl)thiophene single crystals

Materials Chemistry Frontiers. 2019. V.3. N8. P.1545-1554. DOI: 10.1039/c9qm00198k WOS Scopus РИНЦ

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