Stimuli-responsive Pure Organic Luminescent Supramolecules

2018年11月21日

报告题目:Stimuli-responsive Pure Organic Luminescent Supramolecules

报告人:马骧教授,华东理工大学

时间:11月27日上午10:30-12:00

地点:卢嘉锡楼202报告厅

报告摘要:Stimuli-responsive functional supramolecular machines and polymers are attracting broad attention.[1] Multicolor photoluminescence, including especially white-light emission, were achieved based on host-guest supramolecular systems and even a single molecule.[2-3] Room temperature phosphorescence induced by cyclodextrin (CD-RTP) and cucurbituril (CB-RTP) is provided with the advantages of good selectivity, long life, large Stokes shifts and consequently application in the area of molecular recognition. Amorphous, efficient, room-temperature phosphorescent metal-free polymers were facilely prepared and their applications as encryption ink explored as well.[4-6] A series of amorphous organic small molecular compounds were developed with efficient RTP emission through conveniently modifying phosphor moieties to β-cyclodextrin (β-CD). The hydrogen bonding between the cyclodextrin derivatives immobilizes the phosphors to suppress the nonradiative relaxation and shields phosphors from quenchers, which enables such molecules to emit efficient RTP emission with decent quantum yields.[7] The construction of these supramolecular shuttles and polymer and their RTP function investigation would be of significant importance for the development of switchable smart materials.[8-9]

[1] Ma, X.; Tian, H. Acc. Chem. Res. 2014, 47: 1971.

[2] Zhang, Q.-W.; Ma, X.; Tian, H. et al. J. Am. Chem. Soc., 2016, 138: 13541.

[3] Li, D.; Hu, W.; Wang, J.; Zhang, Q.; Cao, X.-M.; Ma, X.; Tian, H. Chem. Sci., 2018, 9: 5709.

[4] Chen H.; Yao X.; Ma X.; Tian H. Adv. Opt. Mater., 2016, 4: 1397.

[5] Ma, X.; Xu, C.; Wang, J.; Tian, H. Angew. Chem. Int. Ed., 2018, 57: 10854.

[6] Wang, X.; Xu, Y.; Ma, X. Tian, H. Ind. Eng. Chem. Res., 2018, 57: 2866.

[7] Li, D.; Lu, F.; Ma, X. et al. J. Am. Chem. Soc., 2018, 140: 1916.

[8] Yao, X.; Li, T.; Wang, J.; Ma, X. et al. Adv. Opt. Mater., 2016, 4: 1322.

[9] Li, D., Wang J., Ma X. Adv. Opt. Mater., 2018, 1800273.