Preparation of Highly Fluorescent Host-Guest Complexes with Tunable Color upon Encapsulation

Masahiro Yamashina; Matthew M Sartin; Yoshihisa Sei; Munetaka Akita; Satoshi Takeuchi; Tahei Tahara; Michito Yoshizawa

doi:10.1021/jacs.5b06195

Preparation of Highly Fluorescent Host-Guest Complexes with Tunable Color upon Encapsulation

J Am Chem Soc. 2015 Jul 29;137(29):9266-9. doi: 10.1021/jacs.5b06195. Epub 2015 Jul 17.

Authors

Masahiro Yamashina¹, Matthew M Sartin², Yoshihisa Sei¹, Munetaka Akita¹, Satoshi Takeuchi^{2

3}, Tahei Tahara^{2

3}, Michito Yoshizawa¹

Affiliations

¹ †Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
² ‡Molecular Spectroscopy Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
³ §Ultrafast Spectroscopy Research Team, RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.

PMID: 26166243
DOI: 10.1021/jacs.5b06195

Abstract

Unlike previous coordinative host-guest systems, highly emissive host-guest complexes (up to Φ(F) = 0.5) were successfully prepared upon encapsulation of various fluorescent dyes (e.g., BODIPY and coumarin derivatives) by a Pt(II)-linked coordination capsule in water. Picosecond time-resolved spectroscopy elucidates the photophysical behaviors of the obtained complexes. Notably, the emission color of the fluorescent guest within the capsule can be readily modulated upon pairwise encapsulation with planar aromatic molecules.