ULTRAFAST INTERNAL CHARGE-TRANSFER IN A DONOR-MODIFIED RHODAMINE

被引：35

作者：

PLAZA, P ^{[1
]}

HUNG, ND ^{[1
]}

MARTIN, MM ^{[1
]}

MEYER, YH ^{[1
]}

VOGEL, M ^{[1
]}

RETTIG, W ^{[1
]}

机构：

[1] TECH UNIV BERLIN,IWAN N STRANSKI INST PHYS & THEORET CHEM,W-1000 BERLIN 12,GERMANY

来源：

CHEMICAL PHYSICS | 1992年 / 168卷 / 2-3期

关键词：

D O I：

10.1016/0301-0104(92)87170-E

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A rhodamine dye ARh with a 4-dimethylamino (electron donor) instead of the usual 2-carboxylate (electron acceptor) substituent is described and its photophysical properties are rationalized within the twisted internal charge transfer (''TICT'') state model. ARh is nearly non-fluorescent in fluid solution but can be transformed into a highly fluorescent dye by protonation. This intramolecular fluorescence quenching in fluid neutral solutions is characterized by stationary and time-resolved fluorescence measurements and the product state is evidenced by subpicosecond transient absorption and gain spectroscopy.

引用

页码：365 / 373

页数：9

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