TY - JOUR
T1 - Pyridinium-Substituted TetraphenylethyleneEntailing Alkyne Moiety
T2 - Enhancement of Photosensitizing Efficiency and Antimicrobial Activity
AU - You, Xue
AU - Ma, Huili
AU - Wang, Yuancheng
AU - Zhang, Guanxin
AU - Peng, Qian
AU - Liu, Libing
AU - Wang, Shu
AU - Zhang, Deqing
N1 - Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/5/4
Y1 - 2017/5/4
N2 - Apart from sensing and imaging, luminogens with aggregation-induced emission (AIE) are also interesting for photosensitizing. The photosensitizing behavior and bacteria-killing performance of a pyridinium-substituted tetraphenylethylene with an alkyne group (TPE-A-Py+) is reported herein. Interestingly, TPE-A-Py+ exhibits higher photosensitizing efficiency than TPE-Py+ (without alkyne group) when I− was used as a counteranion. This is well explained by the fact that the ΔΕST between the excited singlet state (S1) and triplet state (T1) was lower for TPE-A-Py+ than for TPE-Py+, according to theoretical calculations. Moreover, replacement of I− with other anions (PF6 −, N(SO2CF3)2 − and BPh4 −) led to a decrease of photosensitizing efficiency for TPE-A-Py+. Notably, TPE-A-Py+ could be used as an efficient photosensitizer to photo-inactivate ampicillin-resistant (ampr) E. coli at low concentration under white-light irradiation very quickly.
AB - Apart from sensing and imaging, luminogens with aggregation-induced emission (AIE) are also interesting for photosensitizing. The photosensitizing behavior and bacteria-killing performance of a pyridinium-substituted tetraphenylethylene with an alkyne group (TPE-A-Py+) is reported herein. Interestingly, TPE-A-Py+ exhibits higher photosensitizing efficiency than TPE-Py+ (without alkyne group) when I− was used as a counteranion. This is well explained by the fact that the ΔΕST between the excited singlet state (S1) and triplet state (T1) was lower for TPE-A-Py+ than for TPE-Py+, according to theoretical calculations. Moreover, replacement of I− with other anions (PF6 −, N(SO2CF3)2 − and BPh4 −) led to a decrease of photosensitizing efficiency for TPE-A-Py+. Notably, TPE-A-Py+ could be used as an efficient photosensitizer to photo-inactivate ampicillin-resistant (ampr) E. coli at low concentration under white-light irradiation very quickly.
KW - aggregation-induced emission
KW - fluorescent probes
KW - photodynamic therapy
KW - singlet oxygen
KW - tetraphenylethylene
UR - http://www.scopus.com/inward/record.url?scp=85017342242&partnerID=8YFLogxK
U2 - 10.1002/asia.201700243
DO - 10.1002/asia.201700243
M3 - 文章
C2 - 28294561
AN - SCOPUS:85017342242
SN - 1861-4728
VL - 12
SP - 1013
EP - 1019
JO - Chemistry - An Asian Journal
JF - Chemistry - An Asian Journal
IS - 9
ER -