Effect of Triplet T 1-State Population on Fluorescence Polarization Kinetics of Organic Fluorophores

Stanishevsky, I. V.; Chernyavskii, V. A.

doi:10.1007/s10812-015-0171-3

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…This is due to the difference in interactions. On the one hand, the stronger heavyatom effect of iodine than bromine, especially in the case of direct I-interaction in C-I (-hole)Á Á Á halogen bonding, makes the intersystem crossing rate k ISC from S 1 to T 1 and T 1 to S 0 or S 1 faster (Song, 2017;Stanishevsky & Chernyavskii, 2015;Cembran et al, 2004). Consequently, the phosphorescence of AC-14DIPB/TIPB cocrystals is more enhanced than for AC-14DBrPB/TBrPB, as shown in Fig.…”

Section: Luminescent Behaviours Of Cocrystalsmentioning

confidence: 99%

Cocrystals with tunable luminescence colour self-assembled by a predictable method

Liu

Wen

et al. 2018

Acta Crystallogr Sect B

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Organic light-emitting materials play an essential role in the field of luminescent materials because they are easily prepared and they have controllable luminescent properties. Here it is shown that intermolecular interactions and luminescent properties of cocrystals can be predicted using the molecular surface electrostatic potential of selected -hole/-holeÁ Á Á bonding donor haloperfluorobenzenes and acceptor acenaphthene (AC). Single-crystal X-ray diffraction data reveal that actual bonding patterns in five cocrystals assembled from haloperfluorobenzenes and AC are in accordance with predictable patterns of intermolecular interactions; that is -holeÁ Á Á bond is the major interaction in AC-octafluoronaphthalene, AC-1,4-dibromotetrafluorobenzene and AC-1,3,5-tribromo-2,4,6-trifluorobenzene cocrystals, whereas -holeÁ Á Á bond is the major interaction in AC-1,4-diiodotetrafluorobenzene and AC-1,3,5-trifluoro-2,4,6-triiodobenzene cocrystals. The luminescent properties of the cocrystals are affected by the bonding patterns between AC and haloperfluorobenzenes; the -holeÁ Á Á bond leads to weak phosphorescence, whereas the -holeÁ Á Á bond results in weak delayed fluorescence and relatively strong phosphorescence. research papers Acta Cryst. (2018). B74, 610-617 Lili Li et al. Cocrystals with tunable luminescence colour 611 research papers Acta Cryst. (2018). B74, 610-617 Lili Li et al. Cocrystals with tunable luminescence colour 617

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Section: Luminescent Behaviours Of Cocrystalsmentioning

confidence: 99%