高等学校化学学报
高等學校化學學報
고등학교화학학보
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES
2014年
8期
1753-1760
,共8页
汪天洋%胡晓霞%孙海亚%郭建峰%刘东志%李巍%王丽昌%周雪琴
汪天洋%鬍曉霞%孫海亞%郭建峰%劉東誌%李巍%王麗昌%週雪琴
왕천양%호효하%손해아%곽건봉%류동지%리외%왕려창%주설금
卟啉%苝酰亚胺%超分子%三线态%T-T能量转移
卟啉%苝酰亞胺%超分子%三線態%T-T能量轉移
계람%패선아알%초분자%삼선태%T-T능량전이
Porphyrin%Perylene%Supramolecule%Triplet state%T-T energy transfer
通过吡啶基与金属锌卟啉的配位作用,合成了一种新型卟啉-苝酰亚胺超分子配合( TPPZn-BPHPDI),通过核磁共振氢谱确认了超分子体系的形成.采用荧光滴定方法测得锌卟啉与苝酰亚胺配位作用的平衡常数为5.32×104 L/mol.纳秒瞬态荧光光谱和瞬态吸收光谱显示,超分子体系内存在着从卟啉三线态向苝酰亚胺三线态的能量传递过程,产生了寿命长达101μs的苝酰亚胺三线态分子.
通過吡啶基與金屬鋅卟啉的配位作用,閤成瞭一種新型卟啉-苝酰亞胺超分子配閤( TPPZn-BPHPDI),通過覈磁共振氫譜確認瞭超分子體繫的形成.採用熒光滴定方法測得鋅卟啉與苝酰亞胺配位作用的平衡常數為5.32×104 L/mol.納秒瞬態熒光光譜和瞬態吸收光譜顯示,超分子體繫內存在著從卟啉三線態嚮苝酰亞胺三線態的能量傳遞過程,產生瞭壽命長達101μs的苝酰亞胺三線態分子.
통과필정기여금속자계람적배위작용,합성료일충신형계람-패선아알초분자배합( TPPZn-BPHPDI),통과핵자공진경보학인료초분자체계적형성.채용형광적정방법측득자계람여패선아알배위작용적평형상수위5.32×104 L/mol.납초순태형광광보화순태흡수광보현시,초분자체계내존재착종계람삼선태향패선아알삼선태적능량전체과정,산생료수명장체101μs적패선아알삼선태분자.
A new porphyrin-perylene supramolecule, TPPZn-BPHPDI, was obtained by axial coordination of N-pyridyl-N-(1-hexyl)heptylperylene-3,4,9,10-tetracarboximides(BPHPDI) to the zinc ion center of porphy-rin metallacycle( TPPZn) . The supramolecular system was confirmed by 1 H NMR and 1 H-1 H COSY spectra. The fluorescence titration experiments show that the equilibrium constant of the coordination reaction is 5.32í104 L/mol. The analysis of transient nanosecond fluorescence spectra and transient absorption spectra indicates that a long-lived perylene triplet state(101μs) can form via triplet-triplet energy transfer from the porphyrin to the perylene moiety. Moreover, all above photophysical processes are shown very clearly by means of the ener-gy-level diagram in the paper.