TY - JOUR
T1 - Crystallization-induced emission enhancement in a phosphorus-containing heterocyclic luminogen
AU - Qian, Lijun
AU - Tong, Bin
AU - Shen, Jinbo
AU - Shi, Jianbing
AU - Zhi, Junge
AU - Dong, Yongqiang
AU - Yang, Fan
AU - Dong, Yuping
AU - Lam, Jacky W.Y.
AU - Liu, Yang
AU - Tang, Ben Zhong
PY - 2009/7/9
Y1 - 2009/7/9
N2 - Whereas aggregation often quenches luminescence, the emission of a heterocyclic luminogen, 10-[2,5-bis(4-pentyloxyphenylcarbonyloxy)phenyl]-9,10- dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (3), is greatly enhanced by aggregate formation. Crystallization further boosts the emission of 3, turning it from a weak emitter in the solution state to a strong emitter in the crystalline state. The emission of 3 is changed in response to the exposure to vapors of volatile organic compounds (VOCs). The morphology of the thin film of 3 is reversibly and repeatedly modulated between amorphous and crystalline phases by simple fuming-heating and heating-cooling cycles, leading to an emission switching between bright and dark states. The novel attributes of the crystallization-induced emission enhancement, the VOC-responsive emission change, and the morphology-tunable emission switching of 3 could enable it to find applications in an array of technological areas, including chemosensing, optical display, and rewritable information storage.
AB - Whereas aggregation often quenches luminescence, the emission of a heterocyclic luminogen, 10-[2,5-bis(4-pentyloxyphenylcarbonyloxy)phenyl]-9,10- dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (3), is greatly enhanced by aggregate formation. Crystallization further boosts the emission of 3, turning it from a weak emitter in the solution state to a strong emitter in the crystalline state. The emission of 3 is changed in response to the exposure to vapors of volatile organic compounds (VOCs). The morphology of the thin film of 3 is reversibly and repeatedly modulated between amorphous and crystalline phases by simple fuming-heating and heating-cooling cycles, leading to an emission switching between bright and dark states. The novel attributes of the crystallization-induced emission enhancement, the VOC-responsive emission change, and the morphology-tunable emission switching of 3 could enable it to find applications in an array of technological areas, including chemosensing, optical display, and rewritable information storage.
UR - http://www.scopus.com/inward/record.url?scp=67650045770&partnerID=8YFLogxK
U2 - 10.1021/jp900665x
DO - 10.1021/jp900665x
M3 - Article
AN - SCOPUS:67650045770
SN - 1520-6106
VL - 113
SP - 9098
EP - 9103
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
IS - 27
ER -